7252019 Chip Preparation and Chip Properties_no Recomendations

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Stora Enso Pulp Competence CentreChemical Pulp RampDKarlstad Research CentreBox 9090S-650 09 Karlstad Sweden+46-54 775 31 00

Chemical Pulp RampDImatra Research CentreFI-55800 ImatraFinland+358-204 61 21

Pulp Competence CentreBox 34S-814 21 SkutskaumlrSweden+46-26 855 00

983107983144983145983152 983120983154983141983152983137983154983137983156983145983151983150 983137983150983140 983107983144983145983152 983120983154983151983152983141983154983156983145983141983155

983125983148983148983137 983114983137983150983155983155983151983150This part of the Montes del Plata raw material

study describes the chip preparation and the

result of the chip analysis The data will be

used in reports covering the result from

laboratory cooking and bleaching and pulp

property interpretation

62 different stands covering 5 different

eucalyptus species ( Egrandis Edunnii

Eglobulus Emaidenii Ebicostata) 4

different soil types (2 8 91 93 CONEAT

soil classification) and different wood ages

mostly 10-15 year but also some very young

(89 year) and som old (18 year) has been

sampled and analysed

The result of the basic density measurement

showed a very big difference between the

samples The wood specie has a significant

influence on the wood density unlike soil or

ages

The raw material could easily be divided into

three groups low medium and high density

species

Low Egrandis

EdunniiMediumEglobulus

EmaideniiHigh

Ebicostata

The variation in basic density between

samples of the same specie was also quite

high The mapping study shows that

differences of about 100 kgm3 could be

found between stands This could be seen as

an opportunity for future breeding work but

could also cause problem for the future mill if

the raw material is not recorded controlled

and handled properly in the process

7252019 Chip Preparation and Chip Properties_no Recomendations

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Chi Pre aration and Chi Pro erties

Contents

1 Introduction 3 2 Materials and methods 3

21 Raw material 3

22 Chipping 4

23 Drying 5

3 Results 7

31 Basic density of chips 7

32 Chip size and chip size distribution 8

4 Discussion 9

5 Conclusion 9

6 Recommendations 10

7 Appendices 11

7252019 Chip Preparation and Chip Properties_no Recomendations

httpslidepdfcomreaderfullchip-preparation-and-chip-propertiesno-recomendations 313

Chi Pre aration and Chi Pro erties

1 Introduction

The aim with this report is to describe the chip preparation (chipping and drying)method used for the Montes del Plata pulp mill project and the chip properties analysed

for the different samples included in the Frame Setting study and the first part of the

Raw Material Mapping study

2 Materials and methods

21 Raw material

The origin of the wood samples and how the selection was done is described elsewhere

report ldquoWood and Soil Samplingrdquo For the wood mapping study 35 combinations of

wood specie soil and tree age were prioritized for sampling Each sample in the wood

mapping study consisted of wood material from 6 trees with the same DBH as theaverage DBH for trees in the nearby inventory plot

For the frame setting study additional 27 samples of different wood species soil and age

combinations were sampled to create mixes representative for the raw material supply

during different periods Dependent on the amount of chips needed 3 or 6 trees with the

same DBH as the average DBH for trees in the nearby inventory plot were harvested

All trees were cut into 3 equal parts to represent the whole tree volume From each part

a 1-m log was cut from the middle For details in sampling procedure see report ldquoWood

and Soil Samplingrdquo After debarking the 1-m logs was immediately sent to LATU for

chipping Figure 1 and 2 Each sample that arrived was supplemented with a LATU ID

Figure 1 First 10 samples arrived to LATU on 15032010

7252019 Chip Preparation and Chip Properties_no Recomendations

httpslidepdfcomreaderfullchip-preparation-and-chip-propertiesno-recomendations 413

Chi Pre aration and Chi Pro erties

Figure 2 The logs were clearly marked with Montes del Plata IDs

22 Chipping

The logs were sawn longitudinal before chipping Figure 3

Figure 3 Sawing and chipping

7252019 Chip Preparation and Chip Properties_no Recomendations

httpslidepdfcomreaderfullchip-preparation-and-chip-propertiesno-recomendations 513

Chi Pre aration and Chi Pro erties

The material from different heights in the sample was mixed before fed to the chipper

After chipping the chips was mixed thoroughly before drying Figure 4

Figure 4 Blending the chips within each sample

23 Drying

The chips were dried in opened trays in a big oven Figure 5 The drying temperature

was about 50 ordmC The drying conditions were controlled by the computerized oven

system The temperature was monitored in different points during drying The chips

were dried to a dryness of 90-95 before packed and transported to Imatra Finland

7252019 Chip Preparation and Chip Properties_no Recomendations

httpslidepdfcomreaderfullchip-preparation-and-chip-propertiesno-recomendations 613

Chi Pre aration and Chi Pro erties

Figure 5 Drying process and equipment in LATU

7252019 Chip Preparation and Chip Properties_no Recomendations

httpslidepdfcomreaderfullchip-preparation-and-chip-propertiesno-recomendations 713

Chi Pre aration and Chi Pro erties

3 Results

31 Basic density of chips

The basic density of the trees in the wood mapping part of the study was measured both

on one wood disc from each harvested tree and on the chips from the 3 1-m logs The

figures from the discs were analyzed with multivariate methods (software SIMCA) for

the influence of wood specie age and soil type The result showed that the wood specie

was the only parameter that had a significant influence on the basic density No

correlation with age or soil type was found report rdquoRaw Material Mapping in Uruguay

for Montes del Plata - Wood and Bark Analysisrdquo

For the frame setting part of the study the basic density was solely measured on the

chips The measurement was done according to standard method (SCAN-CM 43-95)

The average basic density per specie is found in Table 1 The values for each individual

stand are found in Appendix Table 1-3

Table 1 Average density for the species

Age Basic density kgm3Wood Specie

average average stdev min max

Eucalyptus grandis 14 438 2973 395 507

Eucalyptus dunnii 12 551 3200 506 597

Eucalyptus globulus 11 569 2778 533 623

Eucalyptus maidenii 13 623 2224 581 667

Eucalyptus bicostata 12 596 1643 573 613

The density variation within and between species could also be illustrated in a

frequency-distribution diagram Figure 6 It is obvious that Egrandis and Emaidenii

are separated from the other species with only a minor overlap The amount of samples

of Edunni and Ebicostata were limited making the normal distribution not apparent

7252019 Chip Preparation and Chip Properties_no Recomendations

httpslidepdfcomreaderfullchip-preparation-and-chip-propertiesno-recomendations 813

Chi Pre aration and Chi Pro erties

Basic density distribution between species

0

1

2

3

4

5

6

7

8

9

10

375-

399

400-

424

425-

449

450-

474

475-

499

500-

524

525-

549

550-

574

575-

599

600-

624

625-

649

650-

674

n u m b e r o f s a m p l e s

Ebicostata

Edunnii

E globulus

E grandis

E maidenii

Figure 6 Distribution of basic density for different species

32 Chip size and chip size distribution

The size of the chips from the chipper in LATU is about 3 cm in length and less than 3mm thickness Figure 7

Figure 7 Typical chips from the LATU chipper

7252019 Chip Preparation and Chip Properties_no Recomendations

httpslidepdfcomreaderfullchip-preparation-and-chip-propertiesno-recomendations 913

Chi Pre aration and Chi Pro erties

The chips size distribution was measured for two samples giving an idea of the size

distribution from the laboratory chipper Both samples gave a total accept fraction of

88-89 (fraction 3+4) Table 2

Table 2 Result from chips classification of two different samples SCAN-CM 4088

SIZE DISTRIBUTION WILEN

SCREEN

LATU 16 61-13-12-

91 Euca globulus

LATU 19 111-9063-

12-91 Euca maidenii

Fraction 1 hole 45 mm oversize 000 000

Fraction 2 slot 8 mm overthick 604 671

Fraction 3 hole 13 mm large accept 6898 6551

Fraction 4 hole 7 mm small accept 2036 2264

Fraction 5 hole 3 mm pin 424 471Fraction 6 fines 038 043

Total 10000 10000

4 DiscussionThe basic density for different samples of the same specie varies quite much showing

the existing non homogeneity in the raw material A rough estimate is that the density

today could vary ~100 kgm3 between different stands of the same specie This could be

seen as an opportunity for future breeding work but could also cause problem for the

future mill if the raw material is not recorded controlled and handled properly

The five types of eucalyptus investigated could easily be divided into three groups in

respect of the basic density

bull Low density Egrandis

bull Medium density E dunnii and Eglobulus

bull High density Emaidenii and Ebicostata

The proportion of low medium and high density chips that will be processed will

impact on the average chip mix density

5 ConclusionToday the raw material available for the Montes del Plata pulp mill have a big variation

in basic density The analysis of data shows that the wood specie had a significant

influence on the basic density and that the five investigated types of eucalyptus could be

divided into three groups low medium and high density species

The variation for different samples of the same specie varies also quite much The

mapping study shows that differences of about 100 kgm3 could be found between

stands

The density variation both between and within species makes it very important to

control the chip flow to the digesters and to have developed systems for steering andcontrolling the raw material

7252019 Chip Preparation and Chip Properties_no Recomendations

httpslidepdfcomreaderfullchip-preparation-and-chip-propertiesno-recomendations 1013

Chi Pre aration and Chi Pro erties

6 Recommendations

7252019 Chip Preparation and Chip Properties_no Recomendations

httpslidepdfcomreaderfullchip-preparation-and-chip-propertiesno-recomendations 1113

Chi Pre aration and Chi Pro erties

7 Appendices

Table 1 Chip basic density and raw material data from stands at soil type 91 93 and 8

983123983137983149983152983148983141 983107983151983140983141 983117983108983120 983116 983137983156983157 983113983108 983112983141983145983156983144 983156983151983156 983086 983149 983112983141983145983156983144 983139983151983149 983086 983149 983108983106983112 983139983149 983107 983144983145983152 983106 9830869831089830869830809831479831439830879831493) 983105983143983141 983123983152983141983139983145983141 983119983154983145983143983141983150

114-9352-13-91 17 3115 2638 2032 580 13 E dunnii111-9063-12-91 19 2014 1619 1708 645 12 E maidenii

116-113-12-91 18 2083 1627 1943 581 12 E bicostata

61-13-12-91 16 1968 1592 1832 534 12 E globulus Otros115-9033-18-91 24 2226 1740 1845 451 18 E grandis115-12-15-91 21 2281 1843 1872 431 15 E grandis

115-5008-16-91 22 2524 2089 1768 470 16 E grandis

111-9110-16-91 23 2179 1834 2498 633 16 E maidenii

111-9850-12-91 20 2260 1859 1823 602 12 E maidenii61-9145-12-91 15 2346 1872 2041 593 12 E globulus Otros

114-24-9-91 35 2778 2307 2030 537 9 E dunnii

115-9055-10-91 48 1971 1499 1637 428 10 E grandis

114-48-11-91 47 2844 2022 1773 597 11 E dunnii

114-9108-14-91 53 2879 2423 2397 568 14 E dunnii

61-9156-13-91 52 2125 1693 1890 594 13 E g lobulus Jeeralang

61-9102-10-91 46 2217 1843 2000 563 10 E globulus Jeeralang

111-9131-10-91 50 1673 1337 1627 609 10 E maideni i

116-9137-10-91 49 2110 1713 1933 573 10 E bicostata116-9322-14-91 54 2113 1713 2030 605 14 E bicostata

111-9118-15-91 55 2600 2177 2000 667 15 E maidenii

115-114-12-91 51 2060 1647 2007 461 12 E grandis

983123983137983149983152983148983141 983107983151983140983141 983117983108983120 983116 983137983156983157 983113983108 983112983141983145983156983144 983156983151983156 983086 983149 983112983141983145983156983144 983139983151983149 983086 983149 983108983106983112 983139983149 983107 983144983145983152 983106 9830869831089830869830809831479831439830879831493) 983105983143983141 983123983152983141983139983145983141 983119983154983145983143983141983150

116-9345-14-93 31 1980 1608 1780 595 14 E bicostata111-9427-12-93 29 1965 1571 1760 626 12 E maideni i

61-9141-10-93 25 2057 1652 1947 571 10 E globulus Otros111-9207-15-93 33 2382 2005 1925 620 15 E maideni i

61-68-10-93 26 2063 1680 1933 555 10 E globulus Jeeralang114-9344-13-93 28 2943 2473 2033 537 13 E dunnii

115-9035-10-93 27 2558 2179 2385 452 10 E grandis

115-9088-17-93 32 2472 2102 2100 466 16 E grandis111-9134-12-93 30 1867 1459 1840 597 12 E maideni i

111-13-18-92 34 2580 2175 2113 629 18 E maidenii

115-9150-12-93 60 2260 1863 2183 434 12 E grandis

61-33-12-93 58 2130 1630 1723 623 12 E globulus Jeeralang114-84-14-93 63 2705 2236 1927 529 14 E dunnii

61-52-13-93 62 2218 1592 1998 598 13 E globulus Jeeralang

116-9177-10-93 56 1734 1188 1547 613 10 E bicostata

116-55-12-93 61 2098 1659 1687 611 12 E bicostata111-9117-10-93 57 2264 1866 1890 633 10 E maidenii111-13-14-93 64 2451 2017 1860 639 14 E maidenii

115-24-18-93 65 2752 2364 2283 507 18 E grandis

983123983137983149983152983148983141 983107983151983140983141 983117983108983120 983116 983137983156983157 983113983108 983112983141983145983156983144 983156983151983156 983086 983149 983112983141983145983156983144 983139983151983149 983086 983149 983108983106983112 983139983149 983107 983144983145983152 983106 9830869831089830869830809831479831439830879831493) 983105983143983141 983123983152983141983139983145983141 983119983154983145983143983141983150

111-22-15-815 45A 2308 1973 2300 634 15 E maidenii111-30-15-815 45B 2377 1940 2095 636 15 E maidenii

115-29-16-815 14 2418 2038 2305 435 16 E grandis

115-27-16-815 13 2188 1813 2022 399 16 E grandis

115-18-12-87 8 1952 1598 1792 417 12 E grandis

115-21-12-87 9 2020 1582 1750 395 12 E grandis

61-13-15-815 12 2418 2048 2574 585 15 E globulus Otros114-0-12-88 7 2445 2022 2142 506 11 E dunnii

115-9007-11-802a 42 2310 1833 2200 433 11 E grandis

115-9068-15-815 44 2197 1767 2120 433 15 E grandis

111-0-13-815 10 2000 1668 2123 590 13 E maidenii

983123983137983149983152983148983145983150983143 983140983137983156983137

Average

Wood Mapping and Frame Setting

983123983137983149983152983148983145983150983143 983140983137983156983137

Average

Sample ID

Sample ID

Soil 91

Soil 93

Sample ID 983123983137983149983152983148983145983150983143 983140983137983156983137

Soil 8 Average

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Chi Pre aration and Chi Pro erties

Table 2 Chip basic density and raw material data from stands at soil type 2

983123983137983149983152983148983141 983107983151983140983141 983117983108983120 983116 983137983156983157 983113983108 983112983141983145983156983144 983156983151983156 983086 983149 983112983141983145983156983144 983139983151983149 983086 983149 983108983106983112 983139983149 983107 983144983145983152 983106 9830869831089830869830809831479831439830879831493) 983105983143983141 983123983152983141983139983145983141 983119983154983145983143983141983150

115-20-15-211 6 1717 1363 1647 396 15 E grandis

111-73-10-212 5 2336 1826 1888 581 10 E maidenii61-136-10-212 3 2447 2008 1855 569 10 E globulus Otros

61-1-10-212 2 1769 1311 1517 546 10 E globulus Otros

61-9306-8-212 1 1958 1485 1608 537 8 E globulus Otros

61-176-10-212 4 1925 1454 1617 554 10 E globulus Otros

61-T-14-210 40 2170 1740 2027 553 14 E globulus Otros

61-0-13-211b 36 2203 1820 2143 553 13 E globulus Otros

111-T247-13-212 39 2257 1763 1823 629 13 E maideni i

Age

Wood specie Average Stdev Min Max average

Eucalyptus grandis 438 2973 395 507 14Eucalyptus dunnii 551 3200 506 597 12

Eucalyptus globulus 569 2778 533 623 11

Eucalyptus maidenii 623 2224 581 667 13Eucalyptus bicostata 596 1643 573 613 12

Basic density chips

Sample ID 983123983137983149983152983148983145983150983143 983140983137983156983137

Soil 2 Average

Wood Mapping and Frame Setting

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Chi Pre aration and Chi Pro erties

Distribution

ArchivingLibrary Karlstad Research Centre

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httpslidepdfcomreaderfullchip-preparation-and-chip-propertiesno-recomendations 213

Chi Pre aration and Chi Pro erties

Contents

1 Introduction 3 2 Materials and methods 3

21 Raw material 3

22 Chipping 4

23 Drying 5

3 Results 7

31 Basic density of chips 7

32 Chip size and chip size distribution 8

4 Discussion 9

5 Conclusion 9

6 Recommendations 10

7 Appendices 11

7252019 Chip Preparation and Chip Properties_no Recomendations

httpslidepdfcomreaderfullchip-preparation-and-chip-propertiesno-recomendations 313

Chi Pre aration and Chi Pro erties

1 Introduction

The aim with this report is to describe the chip preparation (chipping and drying)method used for the Montes del Plata pulp mill project and the chip properties analysed

for the different samples included in the Frame Setting study and the first part of the

Raw Material Mapping study

2 Materials and methods

21 Raw material

The origin of the wood samples and how the selection was done is described elsewhere

report ldquoWood and Soil Samplingrdquo For the wood mapping study 35 combinations of

wood specie soil and tree age were prioritized for sampling Each sample in the wood

mapping study consisted of wood material from 6 trees with the same DBH as theaverage DBH for trees in the nearby inventory plot

For the frame setting study additional 27 samples of different wood species soil and age

combinations were sampled to create mixes representative for the raw material supply

during different periods Dependent on the amount of chips needed 3 or 6 trees with the

same DBH as the average DBH for trees in the nearby inventory plot were harvested

All trees were cut into 3 equal parts to represent the whole tree volume From each part

a 1-m log was cut from the middle For details in sampling procedure see report ldquoWood

and Soil Samplingrdquo After debarking the 1-m logs was immediately sent to LATU for

chipping Figure 1 and 2 Each sample that arrived was supplemented with a LATU ID

Figure 1 First 10 samples arrived to LATU on 15032010

7252019 Chip Preparation and Chip Properties_no Recomendations

httpslidepdfcomreaderfullchip-preparation-and-chip-propertiesno-recomendations 413

Chi Pre aration and Chi Pro erties

Figure 2 The logs were clearly marked with Montes del Plata IDs

22 Chipping

The logs were sawn longitudinal before chipping Figure 3

Figure 3 Sawing and chipping

7252019 Chip Preparation and Chip Properties_no Recomendations

httpslidepdfcomreaderfullchip-preparation-and-chip-propertiesno-recomendations 513

Chi Pre aration and Chi Pro erties

The material from different heights in the sample was mixed before fed to the chipper

After chipping the chips was mixed thoroughly before drying Figure 4

Figure 4 Blending the chips within each sample

23 Drying

The chips were dried in opened trays in a big oven Figure 5 The drying temperature

was about 50 ordmC The drying conditions were controlled by the computerized oven

system The temperature was monitored in different points during drying The chips

were dried to a dryness of 90-95 before packed and transported to Imatra Finland

7252019 Chip Preparation and Chip Properties_no Recomendations

httpslidepdfcomreaderfullchip-preparation-and-chip-propertiesno-recomendations 613

Chi Pre aration and Chi Pro erties

Figure 5 Drying process and equipment in LATU

7252019 Chip Preparation and Chip Properties_no Recomendations

httpslidepdfcomreaderfullchip-preparation-and-chip-propertiesno-recomendations 713

Chi Pre aration and Chi Pro erties

3 Results

31 Basic density of chips

The basic density of the trees in the wood mapping part of the study was measured both

on one wood disc from each harvested tree and on the chips from the 3 1-m logs The

figures from the discs were analyzed with multivariate methods (software SIMCA) for

the influence of wood specie age and soil type The result showed that the wood specie

was the only parameter that had a significant influence on the basic density No

correlation with age or soil type was found report rdquoRaw Material Mapping in Uruguay

for Montes del Plata - Wood and Bark Analysisrdquo

For the frame setting part of the study the basic density was solely measured on the

chips The measurement was done according to standard method (SCAN-CM 43-95)

The average basic density per specie is found in Table 1 The values for each individual

stand are found in Appendix Table 1-3

Table 1 Average density for the species

Age Basic density kgm3Wood Specie

average average stdev min max

Eucalyptus grandis 14 438 2973 395 507

Eucalyptus dunnii 12 551 3200 506 597

Eucalyptus globulus 11 569 2778 533 623

Eucalyptus maidenii 13 623 2224 581 667

Eucalyptus bicostata 12 596 1643 573 613

The density variation within and between species could also be illustrated in a

frequency-distribution diagram Figure 6 It is obvious that Egrandis and Emaidenii

are separated from the other species with only a minor overlap The amount of samples

of Edunni and Ebicostata were limited making the normal distribution not apparent

7252019 Chip Preparation and Chip Properties_no Recomendations

httpslidepdfcomreaderfullchip-preparation-and-chip-propertiesno-recomendations 813

Chi Pre aration and Chi Pro erties

Basic density distribution between species

0

1

2

3

4

5

6

7

8

9

10

375-

399

400-

424

425-

449

450-

474

475-

499

500-

524

525-

549

550-

574

575-

599

600-

624

625-

649

650-

674

n u m b e r o f s a m p l e s

Ebicostata

Edunnii

E globulus

E grandis

E maidenii

Figure 6 Distribution of basic density for different species

32 Chip size and chip size distribution

The size of the chips from the chipper in LATU is about 3 cm in length and less than 3mm thickness Figure 7

Figure 7 Typical chips from the LATU chipper

7252019 Chip Preparation and Chip Properties_no Recomendations

httpslidepdfcomreaderfullchip-preparation-and-chip-propertiesno-recomendations 913

Chi Pre aration and Chi Pro erties

The chips size distribution was measured for two samples giving an idea of the size

distribution from the laboratory chipper Both samples gave a total accept fraction of

88-89 (fraction 3+4) Table 2

Table 2 Result from chips classification of two different samples SCAN-CM 4088

SIZE DISTRIBUTION WILEN

SCREEN

LATU 16 61-13-12-

91 Euca globulus

LATU 19 111-9063-

12-91 Euca maidenii

Fraction 1 hole 45 mm oversize 000 000

Fraction 2 slot 8 mm overthick 604 671

Fraction 3 hole 13 mm large accept 6898 6551

Fraction 4 hole 7 mm small accept 2036 2264

Fraction 5 hole 3 mm pin 424 471Fraction 6 fines 038 043

Total 10000 10000

4 DiscussionThe basic density for different samples of the same specie varies quite much showing

the existing non homogeneity in the raw material A rough estimate is that the density

today could vary ~100 kgm3 between different stands of the same specie This could be

seen as an opportunity for future breeding work but could also cause problem for the

future mill if the raw material is not recorded controlled and handled properly

The five types of eucalyptus investigated could easily be divided into three groups in

respect of the basic density

bull Low density Egrandis

bull Medium density E dunnii and Eglobulus

bull High density Emaidenii and Ebicostata

The proportion of low medium and high density chips that will be processed will

impact on the average chip mix density

5 ConclusionToday the raw material available for the Montes del Plata pulp mill have a big variation

in basic density The analysis of data shows that the wood specie had a significant

influence on the basic density and that the five investigated types of eucalyptus could be

divided into three groups low medium and high density species

The variation for different samples of the same specie varies also quite much The

mapping study shows that differences of about 100 kgm3 could be found between

stands

The density variation both between and within species makes it very important to

control the chip flow to the digesters and to have developed systems for steering andcontrolling the raw material

7252019 Chip Preparation and Chip Properties_no Recomendations

httpslidepdfcomreaderfullchip-preparation-and-chip-propertiesno-recomendations 1013

Chi Pre aration and Chi Pro erties

6 Recommendations

7252019 Chip Preparation and Chip Properties_no Recomendations

httpslidepdfcomreaderfullchip-preparation-and-chip-propertiesno-recomendations 1113

Chi Pre aration and Chi Pro erties

7 Appendices

Table 1 Chip basic density and raw material data from stands at soil type 91 93 and 8

983123983137983149983152983148983141 983107983151983140983141 983117983108983120 983116 983137983156983157 983113983108 983112983141983145983156983144 983156983151983156 983086 983149 983112983141983145983156983144 983139983151983149 983086 983149 983108983106983112 983139983149 983107 983144983145983152 983106 9830869831089830869830809831479831439830879831493) 983105983143983141 983123983152983141983139983145983141 983119983154983145983143983141983150

114-9352-13-91 17 3115 2638 2032 580 13 E dunnii111-9063-12-91 19 2014 1619 1708 645 12 E maidenii

116-113-12-91 18 2083 1627 1943 581 12 E bicostata

61-13-12-91 16 1968 1592 1832 534 12 E globulus Otros115-9033-18-91 24 2226 1740 1845 451 18 E grandis115-12-15-91 21 2281 1843 1872 431 15 E grandis

115-5008-16-91 22 2524 2089 1768 470 16 E grandis

111-9110-16-91 23 2179 1834 2498 633 16 E maidenii

111-9850-12-91 20 2260 1859 1823 602 12 E maidenii61-9145-12-91 15 2346 1872 2041 593 12 E globulus Otros

114-24-9-91 35 2778 2307 2030 537 9 E dunnii

115-9055-10-91 48 1971 1499 1637 428 10 E grandis

114-48-11-91 47 2844 2022 1773 597 11 E dunnii

114-9108-14-91 53 2879 2423 2397 568 14 E dunnii

61-9156-13-91 52 2125 1693 1890 594 13 E g lobulus Jeeralang

61-9102-10-91 46 2217 1843 2000 563 10 E globulus Jeeralang

111-9131-10-91 50 1673 1337 1627 609 10 E maideni i

116-9137-10-91 49 2110 1713 1933 573 10 E bicostata116-9322-14-91 54 2113 1713 2030 605 14 E bicostata

111-9118-15-91 55 2600 2177 2000 667 15 E maidenii

115-114-12-91 51 2060 1647 2007 461 12 E grandis

983123983137983149983152983148983141 983107983151983140983141 983117983108983120 983116 983137983156983157 983113983108 983112983141983145983156983144 983156983151983156 983086 983149 983112983141983145983156983144 983139983151983149 983086 983149 983108983106983112 983139983149 983107 983144983145983152 983106 9830869831089830869830809831479831439830879831493) 983105983143983141 983123983152983141983139983145983141 983119983154983145983143983141983150

116-9345-14-93 31 1980 1608 1780 595 14 E bicostata111-9427-12-93 29 1965 1571 1760 626 12 E maideni i

61-9141-10-93 25 2057 1652 1947 571 10 E globulus Otros111-9207-15-93 33 2382 2005 1925 620 15 E maideni i

61-68-10-93 26 2063 1680 1933 555 10 E globulus Jeeralang114-9344-13-93 28 2943 2473 2033 537 13 E dunnii

115-9035-10-93 27 2558 2179 2385 452 10 E grandis

115-9088-17-93 32 2472 2102 2100 466 16 E grandis111-9134-12-93 30 1867 1459 1840 597 12 E maideni i

111-13-18-92 34 2580 2175 2113 629 18 E maidenii

115-9150-12-93 60 2260 1863 2183 434 12 E grandis

61-33-12-93 58 2130 1630 1723 623 12 E globulus Jeeralang114-84-14-93 63 2705 2236 1927 529 14 E dunnii

61-52-13-93 62 2218 1592 1998 598 13 E globulus Jeeralang

116-9177-10-93 56 1734 1188 1547 613 10 E bicostata

116-55-12-93 61 2098 1659 1687 611 12 E bicostata111-9117-10-93 57 2264 1866 1890 633 10 E maidenii111-13-14-93 64 2451 2017 1860 639 14 E maidenii

115-24-18-93 65 2752 2364 2283 507 18 E grandis

983123983137983149983152983148983141 983107983151983140983141 983117983108983120 983116 983137983156983157 983113983108 983112983141983145983156983144 983156983151983156 983086 983149 983112983141983145983156983144 983139983151983149 983086 983149 983108983106983112 983139983149 983107 983144983145983152 983106 9830869831089830869830809831479831439830879831493) 983105983143983141 983123983152983141983139983145983141 983119983154983145983143983141983150

111-22-15-815 45A 2308 1973 2300 634 15 E maidenii111-30-15-815 45B 2377 1940 2095 636 15 E maidenii

115-29-16-815 14 2418 2038 2305 435 16 E grandis

115-27-16-815 13 2188 1813 2022 399 16 E grandis

115-18-12-87 8 1952 1598 1792 417 12 E grandis

115-21-12-87 9 2020 1582 1750 395 12 E grandis

61-13-15-815 12 2418 2048 2574 585 15 E globulus Otros114-0-12-88 7 2445 2022 2142 506 11 E dunnii

115-9007-11-802a 42 2310 1833 2200 433 11 E grandis

115-9068-15-815 44 2197 1767 2120 433 15 E grandis

111-0-13-815 10 2000 1668 2123 590 13 E maidenii

983123983137983149983152983148983145983150983143 983140983137983156983137

Average

Wood Mapping and Frame Setting

983123983137983149983152983148983145983150983143 983140983137983156983137

Average

Sample ID

Sample ID

Soil 91

Soil 93

Sample ID 983123983137983149983152983148983145983150983143 983140983137983156983137

Soil 8 Average

7252019 Chip Preparation and Chip Properties_no Recomendations

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Chi Pre aration and Chi Pro erties

Table 2 Chip basic density and raw material data from stands at soil type 2

983123983137983149983152983148983141 983107983151983140983141 983117983108983120 983116 983137983156983157 983113983108 983112983141983145983156983144 983156983151983156 983086 983149 983112983141983145983156983144 983139983151983149 983086 983149 983108983106983112 983139983149 983107 983144983145983152 983106 9830869831089830869830809831479831439830879831493) 983105983143983141 983123983152983141983139983145983141 983119983154983145983143983141983150

115-20-15-211 6 1717 1363 1647 396 15 E grandis

111-73-10-212 5 2336 1826 1888 581 10 E maidenii61-136-10-212 3 2447 2008 1855 569 10 E globulus Otros

61-1-10-212 2 1769 1311 1517 546 10 E globulus Otros

61-9306-8-212 1 1958 1485 1608 537 8 E globulus Otros

61-176-10-212 4 1925 1454 1617 554 10 E globulus Otros

61-T-14-210 40 2170 1740 2027 553 14 E globulus Otros

61-0-13-211b 36 2203 1820 2143 553 13 E globulus Otros

111-T247-13-212 39 2257 1763 1823 629 13 E maideni i

Age

Wood specie Average Stdev Min Max average

Eucalyptus grandis 438 2973 395 507 14Eucalyptus dunnii 551 3200 506 597 12

Eucalyptus globulus 569 2778 533 623 11

Eucalyptus maidenii 623 2224 581 667 13Eucalyptus bicostata 596 1643 573 613 12

Basic density chips

Sample ID 983123983137983149983152983148983145983150983143 983140983137983156983137

Soil 2 Average

Wood Mapping and Frame Setting

7252019 Chip Preparation and Chip Properties_no Recomendations

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Chi Pre aration and Chi Pro erties

Distribution

ArchivingLibrary Karlstad Research Centre

7252019 Chip Preparation and Chip Properties_no Recomendations

httpslidepdfcomreaderfullchip-preparation-and-chip-propertiesno-recomendations 313

Chi Pre aration and Chi Pro erties

1 Introduction

The aim with this report is to describe the chip preparation (chipping and drying)method used for the Montes del Plata pulp mill project and the chip properties analysed

for the different samples included in the Frame Setting study and the first part of the

Raw Material Mapping study

2 Materials and methods

21 Raw material

The origin of the wood samples and how the selection was done is described elsewhere

report ldquoWood and Soil Samplingrdquo For the wood mapping study 35 combinations of

wood specie soil and tree age were prioritized for sampling Each sample in the wood

mapping study consisted of wood material from 6 trees with the same DBH as theaverage DBH for trees in the nearby inventory plot

For the frame setting study additional 27 samples of different wood species soil and age

combinations were sampled to create mixes representative for the raw material supply

during different periods Dependent on the amount of chips needed 3 or 6 trees with the

same DBH as the average DBH for trees in the nearby inventory plot were harvested

All trees were cut into 3 equal parts to represent the whole tree volume From each part

a 1-m log was cut from the middle For details in sampling procedure see report ldquoWood

and Soil Samplingrdquo After debarking the 1-m logs was immediately sent to LATU for

chipping Figure 1 and 2 Each sample that arrived was supplemented with a LATU ID

Figure 1 First 10 samples arrived to LATU on 15032010

7252019 Chip Preparation and Chip Properties_no Recomendations

httpslidepdfcomreaderfullchip-preparation-and-chip-propertiesno-recomendations 413

Chi Pre aration and Chi Pro erties

Figure 2 The logs were clearly marked with Montes del Plata IDs

22 Chipping

The logs were sawn longitudinal before chipping Figure 3

Figure 3 Sawing and chipping

7252019 Chip Preparation and Chip Properties_no Recomendations

httpslidepdfcomreaderfullchip-preparation-and-chip-propertiesno-recomendations 513

Chi Pre aration and Chi Pro erties

The material from different heights in the sample was mixed before fed to the chipper

After chipping the chips was mixed thoroughly before drying Figure 4

Figure 4 Blending the chips within each sample

23 Drying

The chips were dried in opened trays in a big oven Figure 5 The drying temperature

was about 50 ordmC The drying conditions were controlled by the computerized oven

system The temperature was monitored in different points during drying The chips

were dried to a dryness of 90-95 before packed and transported to Imatra Finland

7252019 Chip Preparation and Chip Properties_no Recomendations

httpslidepdfcomreaderfullchip-preparation-and-chip-propertiesno-recomendations 613

Chi Pre aration and Chi Pro erties

Figure 5 Drying process and equipment in LATU

7252019 Chip Preparation and Chip Properties_no Recomendations

httpslidepdfcomreaderfullchip-preparation-and-chip-propertiesno-recomendations 713

Chi Pre aration and Chi Pro erties

3 Results

31 Basic density of chips

The basic density of the trees in the wood mapping part of the study was measured both

on one wood disc from each harvested tree and on the chips from the 3 1-m logs The

figures from the discs were analyzed with multivariate methods (software SIMCA) for

the influence of wood specie age and soil type The result showed that the wood specie

was the only parameter that had a significant influence on the basic density No

correlation with age or soil type was found report rdquoRaw Material Mapping in Uruguay

for Montes del Plata - Wood and Bark Analysisrdquo

For the frame setting part of the study the basic density was solely measured on the

chips The measurement was done according to standard method (SCAN-CM 43-95)

The average basic density per specie is found in Table 1 The values for each individual

stand are found in Appendix Table 1-3

Table 1 Average density for the species

Age Basic density kgm3Wood Specie

average average stdev min max

Eucalyptus grandis 14 438 2973 395 507

Eucalyptus dunnii 12 551 3200 506 597

Eucalyptus globulus 11 569 2778 533 623

Eucalyptus maidenii 13 623 2224 581 667

Eucalyptus bicostata 12 596 1643 573 613

The density variation within and between species could also be illustrated in a

frequency-distribution diagram Figure 6 It is obvious that Egrandis and Emaidenii

are separated from the other species with only a minor overlap The amount of samples

of Edunni and Ebicostata were limited making the normal distribution not apparent

7252019 Chip Preparation and Chip Properties_no Recomendations

httpslidepdfcomreaderfullchip-preparation-and-chip-propertiesno-recomendations 813

Chi Pre aration and Chi Pro erties

Basic density distribution between species

0

1

2

3

4

5

6

7

8

9

10

375-

399

400-

424

425-

449

450-

474

475-

499

500-

524

525-

549

550-

574

575-

599

600-

624

625-

649

650-

674

n u m b e r o f s a m p l e s

Ebicostata

Edunnii

E globulus

E grandis

E maidenii

Figure 6 Distribution of basic density for different species

32 Chip size and chip size distribution

The size of the chips from the chipper in LATU is about 3 cm in length and less than 3mm thickness Figure 7

Figure 7 Typical chips from the LATU chipper

7252019 Chip Preparation and Chip Properties_no Recomendations

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Chi Pre aration and Chi Pro erties

The chips size distribution was measured for two samples giving an idea of the size

distribution from the laboratory chipper Both samples gave a total accept fraction of

88-89 (fraction 3+4) Table 2

Table 2 Result from chips classification of two different samples SCAN-CM 4088

SIZE DISTRIBUTION WILEN

SCREEN

LATU 16 61-13-12-

91 Euca globulus

LATU 19 111-9063-

12-91 Euca maidenii

Fraction 1 hole 45 mm oversize 000 000

Fraction 2 slot 8 mm overthick 604 671

Fraction 3 hole 13 mm large accept 6898 6551

Fraction 4 hole 7 mm small accept 2036 2264

Fraction 5 hole 3 mm pin 424 471Fraction 6 fines 038 043

Total 10000 10000

4 DiscussionThe basic density for different samples of the same specie varies quite much showing

the existing non homogeneity in the raw material A rough estimate is that the density

today could vary ~100 kgm3 between different stands of the same specie This could be

seen as an opportunity for future breeding work but could also cause problem for the

future mill if the raw material is not recorded controlled and handled properly

The five types of eucalyptus investigated could easily be divided into three groups in

respect of the basic density

bull Low density Egrandis

bull Medium density E dunnii and Eglobulus

bull High density Emaidenii and Ebicostata

The proportion of low medium and high density chips that will be processed will

impact on the average chip mix density

5 ConclusionToday the raw material available for the Montes del Plata pulp mill have a big variation

in basic density The analysis of data shows that the wood specie had a significant

influence on the basic density and that the five investigated types of eucalyptus could be

divided into three groups low medium and high density species

The variation for different samples of the same specie varies also quite much The

mapping study shows that differences of about 100 kgm3 could be found between

stands

The density variation both between and within species makes it very important to

control the chip flow to the digesters and to have developed systems for steering andcontrolling the raw material

7252019 Chip Preparation and Chip Properties_no Recomendations

httpslidepdfcomreaderfullchip-preparation-and-chip-propertiesno-recomendations 1013

Chi Pre aration and Chi Pro erties

6 Recommendations

7252019 Chip Preparation and Chip Properties_no Recomendations

httpslidepdfcomreaderfullchip-preparation-and-chip-propertiesno-recomendations 1113

Chi Pre aration and Chi Pro erties

7 Appendices

Table 1 Chip basic density and raw material data from stands at soil type 91 93 and 8

983123983137983149983152983148983141 983107983151983140983141 983117983108983120 983116 983137983156983157 983113983108 983112983141983145983156983144 983156983151983156 983086 983149 983112983141983145983156983144 983139983151983149 983086 983149 983108983106983112 983139983149 983107 983144983145983152 983106 9830869831089830869830809831479831439830879831493) 983105983143983141 983123983152983141983139983145983141 983119983154983145983143983141983150

114-9352-13-91 17 3115 2638 2032 580 13 E dunnii111-9063-12-91 19 2014 1619 1708 645 12 E maidenii

116-113-12-91 18 2083 1627 1943 581 12 E bicostata

61-13-12-91 16 1968 1592 1832 534 12 E globulus Otros115-9033-18-91 24 2226 1740 1845 451 18 E grandis115-12-15-91 21 2281 1843 1872 431 15 E grandis

115-5008-16-91 22 2524 2089 1768 470 16 E grandis

111-9110-16-91 23 2179 1834 2498 633 16 E maidenii

111-9850-12-91 20 2260 1859 1823 602 12 E maidenii61-9145-12-91 15 2346 1872 2041 593 12 E globulus Otros

114-24-9-91 35 2778 2307 2030 537 9 E dunnii

115-9055-10-91 48 1971 1499 1637 428 10 E grandis

114-48-11-91 47 2844 2022 1773 597 11 E dunnii

114-9108-14-91 53 2879 2423 2397 568 14 E dunnii

61-9156-13-91 52 2125 1693 1890 594 13 E g lobulus Jeeralang

61-9102-10-91 46 2217 1843 2000 563 10 E globulus Jeeralang

111-9131-10-91 50 1673 1337 1627 609 10 E maideni i

116-9137-10-91 49 2110 1713 1933 573 10 E bicostata116-9322-14-91 54 2113 1713 2030 605 14 E bicostata

111-9118-15-91 55 2600 2177 2000 667 15 E maidenii

115-114-12-91 51 2060 1647 2007 461 12 E grandis

983123983137983149983152983148983141 983107983151983140983141 983117983108983120 983116 983137983156983157 983113983108 983112983141983145983156983144 983156983151983156 983086 983149 983112983141983145983156983144 983139983151983149 983086 983149 983108983106983112 983139983149 983107 983144983145983152 983106 9830869831089830869830809831479831439830879831493) 983105983143983141 983123983152983141983139983145983141 983119983154983145983143983141983150

116-9345-14-93 31 1980 1608 1780 595 14 E bicostata111-9427-12-93 29 1965 1571 1760 626 12 E maideni i

61-9141-10-93 25 2057 1652 1947 571 10 E globulus Otros111-9207-15-93 33 2382 2005 1925 620 15 E maideni i

61-68-10-93 26 2063 1680 1933 555 10 E globulus Jeeralang114-9344-13-93 28 2943 2473 2033 537 13 E dunnii

115-9035-10-93 27 2558 2179 2385 452 10 E grandis

115-9088-17-93 32 2472 2102 2100 466 16 E grandis111-9134-12-93 30 1867 1459 1840 597 12 E maideni i

111-13-18-92 34 2580 2175 2113 629 18 E maidenii

115-9150-12-93 60 2260 1863 2183 434 12 E grandis

61-33-12-93 58 2130 1630 1723 623 12 E globulus Jeeralang114-84-14-93 63 2705 2236 1927 529 14 E dunnii

61-52-13-93 62 2218 1592 1998 598 13 E globulus Jeeralang

116-9177-10-93 56 1734 1188 1547 613 10 E bicostata

116-55-12-93 61 2098 1659 1687 611 12 E bicostata111-9117-10-93 57 2264 1866 1890 633 10 E maidenii111-13-14-93 64 2451 2017 1860 639 14 E maidenii

115-24-18-93 65 2752 2364 2283 507 18 E grandis

983123983137983149983152983148983141 983107983151983140983141 983117983108983120 983116 983137983156983157 983113983108 983112983141983145983156983144 983156983151983156 983086 983149 983112983141983145983156983144 983139983151983149 983086 983149 983108983106983112 983139983149 983107 983144983145983152 983106 9830869831089830869830809831479831439830879831493) 983105983143983141 983123983152983141983139983145983141 983119983154983145983143983141983150

111-22-15-815 45A 2308 1973 2300 634 15 E maidenii111-30-15-815 45B 2377 1940 2095 636 15 E maidenii

115-29-16-815 14 2418 2038 2305 435 16 E grandis

115-27-16-815 13 2188 1813 2022 399 16 E grandis

115-18-12-87 8 1952 1598 1792 417 12 E grandis

115-21-12-87 9 2020 1582 1750 395 12 E grandis

61-13-15-815 12 2418 2048 2574 585 15 E globulus Otros114-0-12-88 7 2445 2022 2142 506 11 E dunnii

115-9007-11-802a 42 2310 1833 2200 433 11 E grandis

115-9068-15-815 44 2197 1767 2120 433 15 E grandis

111-0-13-815 10 2000 1668 2123 590 13 E maidenii

983123983137983149983152983148983145983150983143 983140983137983156983137

Average

Wood Mapping and Frame Setting

983123983137983149983152983148983145983150983143 983140983137983156983137

Average

Sample ID

Sample ID

Soil 91

Soil 93

Sample ID 983123983137983149983152983148983145983150983143 983140983137983156983137

Soil 8 Average

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Chi Pre aration and Chi Pro erties

Table 2 Chip basic density and raw material data from stands at soil type 2

983123983137983149983152983148983141 983107983151983140983141 983117983108983120 983116 983137983156983157 983113983108 983112983141983145983156983144 983156983151983156 983086 983149 983112983141983145983156983144 983139983151983149 983086 983149 983108983106983112 983139983149 983107 983144983145983152 983106 9830869831089830869830809831479831439830879831493) 983105983143983141 983123983152983141983139983145983141 983119983154983145983143983141983150

115-20-15-211 6 1717 1363 1647 396 15 E grandis

111-73-10-212 5 2336 1826 1888 581 10 E maidenii61-136-10-212 3 2447 2008 1855 569 10 E globulus Otros

61-1-10-212 2 1769 1311 1517 546 10 E globulus Otros

61-9306-8-212 1 1958 1485 1608 537 8 E globulus Otros

61-176-10-212 4 1925 1454 1617 554 10 E globulus Otros

61-T-14-210 40 2170 1740 2027 553 14 E globulus Otros

61-0-13-211b 36 2203 1820 2143 553 13 E globulus Otros

111-T247-13-212 39 2257 1763 1823 629 13 E maideni i

Age

Wood specie Average Stdev Min Max average

Eucalyptus grandis 438 2973 395 507 14Eucalyptus dunnii 551 3200 506 597 12

Eucalyptus globulus 569 2778 533 623 11

Eucalyptus maidenii 623 2224 581 667 13Eucalyptus bicostata 596 1643 573 613 12

Basic density chips

Sample ID 983123983137983149983152983148983145983150983143 983140983137983156983137

Soil 2 Average

Wood Mapping and Frame Setting

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Chi Pre aration and Chi Pro erties

Distribution

ArchivingLibrary Karlstad Research Centre

7252019 Chip Preparation and Chip Properties_no Recomendations

httpslidepdfcomreaderfullchip-preparation-and-chip-propertiesno-recomendations 413

Chi Pre aration and Chi Pro erties

Figure 2 The logs were clearly marked with Montes del Plata IDs

22 Chipping

The logs were sawn longitudinal before chipping Figure 3

Figure 3 Sawing and chipping

7252019 Chip Preparation and Chip Properties_no Recomendations

httpslidepdfcomreaderfullchip-preparation-and-chip-propertiesno-recomendations 513

Chi Pre aration and Chi Pro erties

The material from different heights in the sample was mixed before fed to the chipper

After chipping the chips was mixed thoroughly before drying Figure 4

Figure 4 Blending the chips within each sample

23 Drying

The chips were dried in opened trays in a big oven Figure 5 The drying temperature

was about 50 ordmC The drying conditions were controlled by the computerized oven

system The temperature was monitored in different points during drying The chips

were dried to a dryness of 90-95 before packed and transported to Imatra Finland

7252019 Chip Preparation and Chip Properties_no Recomendations

httpslidepdfcomreaderfullchip-preparation-and-chip-propertiesno-recomendations 613

Chi Pre aration and Chi Pro erties

Figure 5 Drying process and equipment in LATU

7252019 Chip Preparation and Chip Properties_no Recomendations

httpslidepdfcomreaderfullchip-preparation-and-chip-propertiesno-recomendations 713

Chi Pre aration and Chi Pro erties

3 Results

31 Basic density of chips

The basic density of the trees in the wood mapping part of the study was measured both

on one wood disc from each harvested tree and on the chips from the 3 1-m logs The

figures from the discs were analyzed with multivariate methods (software SIMCA) for

the influence of wood specie age and soil type The result showed that the wood specie

was the only parameter that had a significant influence on the basic density No

correlation with age or soil type was found report rdquoRaw Material Mapping in Uruguay

for Montes del Plata - Wood and Bark Analysisrdquo

For the frame setting part of the study the basic density was solely measured on the

chips The measurement was done according to standard method (SCAN-CM 43-95)

The average basic density per specie is found in Table 1 The values for each individual

stand are found in Appendix Table 1-3

Table 1 Average density for the species

Age Basic density kgm3Wood Specie

average average stdev min max

Eucalyptus grandis 14 438 2973 395 507

Eucalyptus dunnii 12 551 3200 506 597

Eucalyptus globulus 11 569 2778 533 623

Eucalyptus maidenii 13 623 2224 581 667

Eucalyptus bicostata 12 596 1643 573 613

The density variation within and between species could also be illustrated in a

frequency-distribution diagram Figure 6 It is obvious that Egrandis and Emaidenii

are separated from the other species with only a minor overlap The amount of samples

of Edunni and Ebicostata were limited making the normal distribution not apparent

7252019 Chip Preparation and Chip Properties_no Recomendations

httpslidepdfcomreaderfullchip-preparation-and-chip-propertiesno-recomendations 813

Chi Pre aration and Chi Pro erties

Basic density distribution between species

0

1

2

3

4

5

6

7

8

9

10

375-

399

400-

424

425-

449

450-

474

475-

499

500-

524

525-

549

550-

574

575-

599

600-

624

625-

649

650-

674

n u m b e r o f s a m p l e s

Ebicostata

Edunnii

E globulus

E grandis

E maidenii

Figure 6 Distribution of basic density for different species

32 Chip size and chip size distribution

The size of the chips from the chipper in LATU is about 3 cm in length and less than 3mm thickness Figure 7

Figure 7 Typical chips from the LATU chipper

7252019 Chip Preparation and Chip Properties_no Recomendations

httpslidepdfcomreaderfullchip-preparation-and-chip-propertiesno-recomendations 913

Chi Pre aration and Chi Pro erties

The chips size distribution was measured for two samples giving an idea of the size

distribution from the laboratory chipper Both samples gave a total accept fraction of

88-89 (fraction 3+4) Table 2

Table 2 Result from chips classification of two different samples SCAN-CM 4088

SIZE DISTRIBUTION WILEN

SCREEN

LATU 16 61-13-12-

91 Euca globulus

LATU 19 111-9063-

12-91 Euca maidenii

Fraction 1 hole 45 mm oversize 000 000

Fraction 2 slot 8 mm overthick 604 671

Fraction 3 hole 13 mm large accept 6898 6551

Fraction 4 hole 7 mm small accept 2036 2264

Fraction 5 hole 3 mm pin 424 471Fraction 6 fines 038 043

Total 10000 10000

4 DiscussionThe basic density for different samples of the same specie varies quite much showing

the existing non homogeneity in the raw material A rough estimate is that the density

today could vary ~100 kgm3 between different stands of the same specie This could be

seen as an opportunity for future breeding work but could also cause problem for the

future mill if the raw material is not recorded controlled and handled properly

The five types of eucalyptus investigated could easily be divided into three groups in

respect of the basic density

bull Low density Egrandis

bull Medium density E dunnii and Eglobulus

bull High density Emaidenii and Ebicostata

The proportion of low medium and high density chips that will be processed will

impact on the average chip mix density

5 ConclusionToday the raw material available for the Montes del Plata pulp mill have a big variation

in basic density The analysis of data shows that the wood specie had a significant

influence on the basic density and that the five investigated types of eucalyptus could be

divided into three groups low medium and high density species

The variation for different samples of the same specie varies also quite much The

mapping study shows that differences of about 100 kgm3 could be found between

stands

The density variation both between and within species makes it very important to

control the chip flow to the digesters and to have developed systems for steering andcontrolling the raw material

7252019 Chip Preparation and Chip Properties_no Recomendations

httpslidepdfcomreaderfullchip-preparation-and-chip-propertiesno-recomendations 1013

Chi Pre aration and Chi Pro erties

6 Recommendations

7252019 Chip Preparation and Chip Properties_no Recomendations

httpslidepdfcomreaderfullchip-preparation-and-chip-propertiesno-recomendations 1113

Chi Pre aration and Chi Pro erties

7 Appendices

Table 1 Chip basic density and raw material data from stands at soil type 91 93 and 8

983123983137983149983152983148983141 983107983151983140983141 983117983108983120 983116 983137983156983157 983113983108 983112983141983145983156983144 983156983151983156 983086 983149 983112983141983145983156983144 983139983151983149 983086 983149 983108983106983112 983139983149 983107 983144983145983152 983106 9830869831089830869830809831479831439830879831493) 983105983143983141 983123983152983141983139983145983141 983119983154983145983143983141983150

114-9352-13-91 17 3115 2638 2032 580 13 E dunnii111-9063-12-91 19 2014 1619 1708 645 12 E maidenii

116-113-12-91 18 2083 1627 1943 581 12 E bicostata

61-13-12-91 16 1968 1592 1832 534 12 E globulus Otros115-9033-18-91 24 2226 1740 1845 451 18 E grandis115-12-15-91 21 2281 1843 1872 431 15 E grandis

115-5008-16-91 22 2524 2089 1768 470 16 E grandis

111-9110-16-91 23 2179 1834 2498 633 16 E maidenii

111-9850-12-91 20 2260 1859 1823 602 12 E maidenii61-9145-12-91 15 2346 1872 2041 593 12 E globulus Otros

114-24-9-91 35 2778 2307 2030 537 9 E dunnii

115-9055-10-91 48 1971 1499 1637 428 10 E grandis

114-48-11-91 47 2844 2022 1773 597 11 E dunnii

114-9108-14-91 53 2879 2423 2397 568 14 E dunnii

61-9156-13-91 52 2125 1693 1890 594 13 E g lobulus Jeeralang

61-9102-10-91 46 2217 1843 2000 563 10 E globulus Jeeralang

111-9131-10-91 50 1673 1337 1627 609 10 E maideni i

116-9137-10-91 49 2110 1713 1933 573 10 E bicostata116-9322-14-91 54 2113 1713 2030 605 14 E bicostata

111-9118-15-91 55 2600 2177 2000 667 15 E maidenii

115-114-12-91 51 2060 1647 2007 461 12 E grandis

983123983137983149983152983148983141 983107983151983140983141 983117983108983120 983116 983137983156983157 983113983108 983112983141983145983156983144 983156983151983156 983086 983149 983112983141983145983156983144 983139983151983149 983086 983149 983108983106983112 983139983149 983107 983144983145983152 983106 9830869831089830869830809831479831439830879831493) 983105983143983141 983123983152983141983139983145983141 983119983154983145983143983141983150

116-9345-14-93 31 1980 1608 1780 595 14 E bicostata111-9427-12-93 29 1965 1571 1760 626 12 E maideni i

61-9141-10-93 25 2057 1652 1947 571 10 E globulus Otros111-9207-15-93 33 2382 2005 1925 620 15 E maideni i

61-68-10-93 26 2063 1680 1933 555 10 E globulus Jeeralang114-9344-13-93 28 2943 2473 2033 537 13 E dunnii

115-9035-10-93 27 2558 2179 2385 452 10 E grandis

115-9088-17-93 32 2472 2102 2100 466 16 E grandis111-9134-12-93 30 1867 1459 1840 597 12 E maideni i

111-13-18-92 34 2580 2175 2113 629 18 E maidenii

115-9150-12-93 60 2260 1863 2183 434 12 E grandis

61-33-12-93 58 2130 1630 1723 623 12 E globulus Jeeralang114-84-14-93 63 2705 2236 1927 529 14 E dunnii

61-52-13-93 62 2218 1592 1998 598 13 E globulus Jeeralang

116-9177-10-93 56 1734 1188 1547 613 10 E bicostata

116-55-12-93 61 2098 1659 1687 611 12 E bicostata111-9117-10-93 57 2264 1866 1890 633 10 E maidenii111-13-14-93 64 2451 2017 1860 639 14 E maidenii

115-24-18-93 65 2752 2364 2283 507 18 E grandis

983123983137983149983152983148983141 983107983151983140983141 983117983108983120 983116 983137983156983157 983113983108 983112983141983145983156983144 983156983151983156 983086 983149 983112983141983145983156983144 983139983151983149 983086 983149 983108983106983112 983139983149 983107 983144983145983152 983106 9830869831089830869830809831479831439830879831493) 983105983143983141 983123983152983141983139983145983141 983119983154983145983143983141983150

111-22-15-815 45A 2308 1973 2300 634 15 E maidenii111-30-15-815 45B 2377 1940 2095 636 15 E maidenii

115-29-16-815 14 2418 2038 2305 435 16 E grandis

115-27-16-815 13 2188 1813 2022 399 16 E grandis

115-18-12-87 8 1952 1598 1792 417 12 E grandis

115-21-12-87 9 2020 1582 1750 395 12 E grandis

61-13-15-815 12 2418 2048 2574 585 15 E globulus Otros114-0-12-88 7 2445 2022 2142 506 11 E dunnii

115-9007-11-802a 42 2310 1833 2200 433 11 E grandis

115-9068-15-815 44 2197 1767 2120 433 15 E grandis

111-0-13-815 10 2000 1668 2123 590 13 E maidenii

983123983137983149983152983148983145983150983143 983140983137983156983137

Average

Wood Mapping and Frame Setting

983123983137983149983152983148983145983150983143 983140983137983156983137

Average

Sample ID

Sample ID

Soil 91

Soil 93

Sample ID 983123983137983149983152983148983145983150983143 983140983137983156983137

Soil 8 Average

7252019 Chip Preparation and Chip Properties_no Recomendations

httpslidepdfcomreaderfullchip-preparation-and-chip-propertiesno-recomendations 1213

Chi Pre aration and Chi Pro erties

Table 2 Chip basic density and raw material data from stands at soil type 2

983123983137983149983152983148983141 983107983151983140983141 983117983108983120 983116 983137983156983157 983113983108 983112983141983145983156983144 983156983151983156 983086 983149 983112983141983145983156983144 983139983151983149 983086 983149 983108983106983112 983139983149 983107 983144983145983152 983106 9830869831089830869830809831479831439830879831493) 983105983143983141 983123983152983141983139983145983141 983119983154983145983143983141983150

115-20-15-211 6 1717 1363 1647 396 15 E grandis

111-73-10-212 5 2336 1826 1888 581 10 E maidenii61-136-10-212 3 2447 2008 1855 569 10 E globulus Otros

61-1-10-212 2 1769 1311 1517 546 10 E globulus Otros

61-9306-8-212 1 1958 1485 1608 537 8 E globulus Otros

61-176-10-212 4 1925 1454 1617 554 10 E globulus Otros

61-T-14-210 40 2170 1740 2027 553 14 E globulus Otros

61-0-13-211b 36 2203 1820 2143 553 13 E globulus Otros

111-T247-13-212 39 2257 1763 1823 629 13 E maideni i

Age

Wood specie Average Stdev Min Max average

Eucalyptus grandis 438 2973 395 507 14Eucalyptus dunnii 551 3200 506 597 12

Eucalyptus globulus 569 2778 533 623 11

Eucalyptus maidenii 623 2224 581 667 13Eucalyptus bicostata 596 1643 573 613 12

Basic density chips

Sample ID 983123983137983149983152983148983145983150983143 983140983137983156983137

Soil 2 Average

Wood Mapping and Frame Setting

7252019 Chip Preparation and Chip Properties_no Recomendations

httpslidepdfcomreaderfullchip-preparation-and-chip-propertiesno-recomendations 1313

Chi Pre aration and Chi Pro erties

Distribution

ArchivingLibrary Karlstad Research Centre

7252019 Chip Preparation and Chip Properties_no Recomendations

httpslidepdfcomreaderfullchip-preparation-and-chip-propertiesno-recomendations 513

Chi Pre aration and Chi Pro erties

The material from different heights in the sample was mixed before fed to the chipper

After chipping the chips was mixed thoroughly before drying Figure 4

Figure 4 Blending the chips within each sample

23 Drying

The chips were dried in opened trays in a big oven Figure 5 The drying temperature

was about 50 ordmC The drying conditions were controlled by the computerized oven

system The temperature was monitored in different points during drying The chips

were dried to a dryness of 90-95 before packed and transported to Imatra Finland

7252019 Chip Preparation and Chip Properties_no Recomendations

httpslidepdfcomreaderfullchip-preparation-and-chip-propertiesno-recomendations 613

Chi Pre aration and Chi Pro erties

Figure 5 Drying process and equipment in LATU

7252019 Chip Preparation and Chip Properties_no Recomendations

httpslidepdfcomreaderfullchip-preparation-and-chip-propertiesno-recomendations 713

Chi Pre aration and Chi Pro erties

3 Results

31 Basic density of chips

The basic density of the trees in the wood mapping part of the study was measured both

on one wood disc from each harvested tree and on the chips from the 3 1-m logs The

figures from the discs were analyzed with multivariate methods (software SIMCA) for

the influence of wood specie age and soil type The result showed that the wood specie

was the only parameter that had a significant influence on the basic density No

correlation with age or soil type was found report rdquoRaw Material Mapping in Uruguay

for Montes del Plata - Wood and Bark Analysisrdquo

For the frame setting part of the study the basic density was solely measured on the

chips The measurement was done according to standard method (SCAN-CM 43-95)

The average basic density per specie is found in Table 1 The values for each individual

stand are found in Appendix Table 1-3

Table 1 Average density for the species

Age Basic density kgm3Wood Specie

average average stdev min max

Eucalyptus grandis 14 438 2973 395 507

Eucalyptus dunnii 12 551 3200 506 597

Eucalyptus globulus 11 569 2778 533 623

Eucalyptus maidenii 13 623 2224 581 667

Eucalyptus bicostata 12 596 1643 573 613

The density variation within and between species could also be illustrated in a

frequency-distribution diagram Figure 6 It is obvious that Egrandis and Emaidenii

are separated from the other species with only a minor overlap The amount of samples

of Edunni and Ebicostata were limited making the normal distribution not apparent

7252019 Chip Preparation and Chip Properties_no Recomendations

httpslidepdfcomreaderfullchip-preparation-and-chip-propertiesno-recomendations 813

Chi Pre aration and Chi Pro erties

Basic density distribution between species

0

1

2

3

4

5

6

7

8

9

10

375-

399

400-

424

425-

449

450-

474

475-

499

500-

524

525-

549

550-

574

575-

599

600-

624

625-

649

650-

674

n u m b e r o f s a m p l e s

Ebicostata

Edunnii

E globulus

E grandis

E maidenii

Figure 6 Distribution of basic density for different species

32 Chip size and chip size distribution

The size of the chips from the chipper in LATU is about 3 cm in length and less than 3mm thickness Figure 7

Figure 7 Typical chips from the LATU chipper

7252019 Chip Preparation and Chip Properties_no Recomendations

httpslidepdfcomreaderfullchip-preparation-and-chip-propertiesno-recomendations 913

Chi Pre aration and Chi Pro erties

The chips size distribution was measured for two samples giving an idea of the size

distribution from the laboratory chipper Both samples gave a total accept fraction of

88-89 (fraction 3+4) Table 2

Table 2 Result from chips classification of two different samples SCAN-CM 4088

SIZE DISTRIBUTION WILEN

SCREEN

LATU 16 61-13-12-

91 Euca globulus

LATU 19 111-9063-

12-91 Euca maidenii

Fraction 1 hole 45 mm oversize 000 000

Fraction 2 slot 8 mm overthick 604 671

Fraction 3 hole 13 mm large accept 6898 6551

Fraction 4 hole 7 mm small accept 2036 2264

Fraction 5 hole 3 mm pin 424 471Fraction 6 fines 038 043

Total 10000 10000

4 DiscussionThe basic density for different samples of the same specie varies quite much showing

the existing non homogeneity in the raw material A rough estimate is that the density

today could vary ~100 kgm3 between different stands of the same specie This could be

seen as an opportunity for future breeding work but could also cause problem for the

future mill if the raw material is not recorded controlled and handled properly

The five types of eucalyptus investigated could easily be divided into three groups in

respect of the basic density

bull Low density Egrandis

bull Medium density E dunnii and Eglobulus

bull High density Emaidenii and Ebicostata

The proportion of low medium and high density chips that will be processed will

impact on the average chip mix density

5 ConclusionToday the raw material available for the Montes del Plata pulp mill have a big variation

in basic density The analysis of data shows that the wood specie had a significant

influence on the basic density and that the five investigated types of eucalyptus could be

divided into three groups low medium and high density species

The variation for different samples of the same specie varies also quite much The

mapping study shows that differences of about 100 kgm3 could be found between

stands

The density variation both between and within species makes it very important to

control the chip flow to the digesters and to have developed systems for steering andcontrolling the raw material

7252019 Chip Preparation and Chip Properties_no Recomendations

httpslidepdfcomreaderfullchip-preparation-and-chip-propertiesno-recomendations 1013

Chi Pre aration and Chi Pro erties

6 Recommendations

7252019 Chip Preparation and Chip Properties_no Recomendations

httpslidepdfcomreaderfullchip-preparation-and-chip-propertiesno-recomendations 1113

Chi Pre aration and Chi Pro erties

7 Appendices

Table 1 Chip basic density and raw material data from stands at soil type 91 93 and 8

983123983137983149983152983148983141 983107983151983140983141 983117983108983120 983116 983137983156983157 983113983108 983112983141983145983156983144 983156983151983156 983086 983149 983112983141983145983156983144 983139983151983149 983086 983149 983108983106983112 983139983149 983107 983144983145983152 983106 9830869831089830869830809831479831439830879831493) 983105983143983141 983123983152983141983139983145983141 983119983154983145983143983141983150

114-9352-13-91 17 3115 2638 2032 580 13 E dunnii111-9063-12-91 19 2014 1619 1708 645 12 E maidenii

116-113-12-91 18 2083 1627 1943 581 12 E bicostata

61-13-12-91 16 1968 1592 1832 534 12 E globulus Otros115-9033-18-91 24 2226 1740 1845 451 18 E grandis115-12-15-91 21 2281 1843 1872 431 15 E grandis

115-5008-16-91 22 2524 2089 1768 470 16 E grandis

111-9110-16-91 23 2179 1834 2498 633 16 E maidenii

111-9850-12-91 20 2260 1859 1823 602 12 E maidenii61-9145-12-91 15 2346 1872 2041 593 12 E globulus Otros

114-24-9-91 35 2778 2307 2030 537 9 E dunnii

115-9055-10-91 48 1971 1499 1637 428 10 E grandis

114-48-11-91 47 2844 2022 1773 597 11 E dunnii

114-9108-14-91 53 2879 2423 2397 568 14 E dunnii

61-9156-13-91 52 2125 1693 1890 594 13 E g lobulus Jeeralang

61-9102-10-91 46 2217 1843 2000 563 10 E globulus Jeeralang

111-9131-10-91 50 1673 1337 1627 609 10 E maideni i

116-9137-10-91 49 2110 1713 1933 573 10 E bicostata116-9322-14-91 54 2113 1713 2030 605 14 E bicostata

111-9118-15-91 55 2600 2177 2000 667 15 E maidenii

115-114-12-91 51 2060 1647 2007 461 12 E grandis

983123983137983149983152983148983141 983107983151983140983141 983117983108983120 983116 983137983156983157 983113983108 983112983141983145983156983144 983156983151983156 983086 983149 983112983141983145983156983144 983139983151983149 983086 983149 983108983106983112 983139983149 983107 983144983145983152 983106 9830869831089830869830809831479831439830879831493) 983105983143983141 983123983152983141983139983145983141 983119983154983145983143983141983150

116-9345-14-93 31 1980 1608 1780 595 14 E bicostata111-9427-12-93 29 1965 1571 1760 626 12 E maideni i

61-9141-10-93 25 2057 1652 1947 571 10 E globulus Otros111-9207-15-93 33 2382 2005 1925 620 15 E maideni i

61-68-10-93 26 2063 1680 1933 555 10 E globulus Jeeralang114-9344-13-93 28 2943 2473 2033 537 13 E dunnii

115-9035-10-93 27 2558 2179 2385 452 10 E grandis

115-9088-17-93 32 2472 2102 2100 466 16 E grandis111-9134-12-93 30 1867 1459 1840 597 12 E maideni i

111-13-18-92 34 2580 2175 2113 629 18 E maidenii

115-9150-12-93 60 2260 1863 2183 434 12 E grandis

61-33-12-93 58 2130 1630 1723 623 12 E globulus Jeeralang114-84-14-93 63 2705 2236 1927 529 14 E dunnii

61-52-13-93 62 2218 1592 1998 598 13 E globulus Jeeralang

116-9177-10-93 56 1734 1188 1547 613 10 E bicostata

116-55-12-93 61 2098 1659 1687 611 12 E bicostata111-9117-10-93 57 2264 1866 1890 633 10 E maidenii111-13-14-93 64 2451 2017 1860 639 14 E maidenii

115-24-18-93 65 2752 2364 2283 507 18 E grandis

983123983137983149983152983148983141 983107983151983140983141 983117983108983120 983116 983137983156983157 983113983108 983112983141983145983156983144 983156983151983156 983086 983149 983112983141983145983156983144 983139983151983149 983086 983149 983108983106983112 983139983149 983107 983144983145983152 983106 9830869831089830869830809831479831439830879831493) 983105983143983141 983123983152983141983139983145983141 983119983154983145983143983141983150

111-22-15-815 45A 2308 1973 2300 634 15 E maidenii111-30-15-815 45B 2377 1940 2095 636 15 E maidenii

115-29-16-815 14 2418 2038 2305 435 16 E grandis

115-27-16-815 13 2188 1813 2022 399 16 E grandis

115-18-12-87 8 1952 1598 1792 417 12 E grandis

115-21-12-87 9 2020 1582 1750 395 12 E grandis

61-13-15-815 12 2418 2048 2574 585 15 E globulus Otros114-0-12-88 7 2445 2022 2142 506 11 E dunnii

115-9007-11-802a 42 2310 1833 2200 433 11 E grandis

115-9068-15-815 44 2197 1767 2120 433 15 E grandis

111-0-13-815 10 2000 1668 2123 590 13 E maidenii

983123983137983149983152983148983145983150983143 983140983137983156983137

Average

Wood Mapping and Frame Setting

983123983137983149983152983148983145983150983143 983140983137983156983137

Average

Sample ID

Sample ID

Soil 91

Soil 93

Sample ID 983123983137983149983152983148983145983150983143 983140983137983156983137

Soil 8 Average

7252019 Chip Preparation and Chip Properties_no Recomendations

httpslidepdfcomreaderfullchip-preparation-and-chip-propertiesno-recomendations 1213

Chi Pre aration and Chi Pro erties

Table 2 Chip basic density and raw material data from stands at soil type 2

983123983137983149983152983148983141 983107983151983140983141 983117983108983120 983116 983137983156983157 983113983108 983112983141983145983156983144 983156983151983156 983086 983149 983112983141983145983156983144 983139983151983149 983086 983149 983108983106983112 983139983149 983107 983144983145983152 983106 9830869831089830869830809831479831439830879831493) 983105983143983141 983123983152983141983139983145983141 983119983154983145983143983141983150

115-20-15-211 6 1717 1363 1647 396 15 E grandis

111-73-10-212 5 2336 1826 1888 581 10 E maidenii61-136-10-212 3 2447 2008 1855 569 10 E globulus Otros

61-1-10-212 2 1769 1311 1517 546 10 E globulus Otros

61-9306-8-212 1 1958 1485 1608 537 8 E globulus Otros

61-176-10-212 4 1925 1454 1617 554 10 E globulus Otros

61-T-14-210 40 2170 1740 2027 553 14 E globulus Otros

61-0-13-211b 36 2203 1820 2143 553 13 E globulus Otros

111-T247-13-212 39 2257 1763 1823 629 13 E maideni i

Age

Wood specie Average Stdev Min Max average

Eucalyptus grandis 438 2973 395 507 14Eucalyptus dunnii 551 3200 506 597 12

Eucalyptus globulus 569 2778 533 623 11

Eucalyptus maidenii 623 2224 581 667 13Eucalyptus bicostata 596 1643 573 613 12

Basic density chips

Sample ID 983123983137983149983152983148983145983150983143 983140983137983156983137

Soil 2 Average

Wood Mapping and Frame Setting

7252019 Chip Preparation and Chip Properties_no Recomendations

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Chi Pre aration and Chi Pro erties

Distribution

ArchivingLibrary Karlstad Research Centre

7252019 Chip Preparation and Chip Properties_no Recomendations

httpslidepdfcomreaderfullchip-preparation-and-chip-propertiesno-recomendations 613

Chi Pre aration and Chi Pro erties

Figure 5 Drying process and equipment in LATU

7252019 Chip Preparation and Chip Properties_no Recomendations

httpslidepdfcomreaderfullchip-preparation-and-chip-propertiesno-recomendations 713

Chi Pre aration and Chi Pro erties

3 Results

31 Basic density of chips

The basic density of the trees in the wood mapping part of the study was measured both

on one wood disc from each harvested tree and on the chips from the 3 1-m logs The

figures from the discs were analyzed with multivariate methods (software SIMCA) for

the influence of wood specie age and soil type The result showed that the wood specie

was the only parameter that had a significant influence on the basic density No

correlation with age or soil type was found report rdquoRaw Material Mapping in Uruguay

for Montes del Plata - Wood and Bark Analysisrdquo

For the frame setting part of the study the basic density was solely measured on the

chips The measurement was done according to standard method (SCAN-CM 43-95)

The average basic density per specie is found in Table 1 The values for each individual

stand are found in Appendix Table 1-3

Table 1 Average density for the species

Age Basic density kgm3Wood Specie

average average stdev min max

Eucalyptus grandis 14 438 2973 395 507

Eucalyptus dunnii 12 551 3200 506 597

Eucalyptus globulus 11 569 2778 533 623

Eucalyptus maidenii 13 623 2224 581 667

Eucalyptus bicostata 12 596 1643 573 613

The density variation within and between species could also be illustrated in a

frequency-distribution diagram Figure 6 It is obvious that Egrandis and Emaidenii

are separated from the other species with only a minor overlap The amount of samples

of Edunni and Ebicostata were limited making the normal distribution not apparent

7252019 Chip Preparation and Chip Properties_no Recomendations

httpslidepdfcomreaderfullchip-preparation-and-chip-propertiesno-recomendations 813

Chi Pre aration and Chi Pro erties

Basic density distribution between species

0

1

2

3

4

5

6

7

8

9

10

375-

399

400-

424

425-

449

450-

474

475-

499

500-

524

525-

549

550-

574

575-

599

600-

624

625-

649

650-

674

n u m b e r o f s a m p l e s

Ebicostata

Edunnii

E globulus

E grandis

E maidenii

Figure 6 Distribution of basic density for different species

32 Chip size and chip size distribution

The size of the chips from the chipper in LATU is about 3 cm in length and less than 3mm thickness Figure 7

Figure 7 Typical chips from the LATU chipper

7252019 Chip Preparation and Chip Properties_no Recomendations

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Chi Pre aration and Chi Pro erties

The chips size distribution was measured for two samples giving an idea of the size

distribution from the laboratory chipper Both samples gave a total accept fraction of

88-89 (fraction 3+4) Table 2

Table 2 Result from chips classification of two different samples SCAN-CM 4088

SIZE DISTRIBUTION WILEN

SCREEN

LATU 16 61-13-12-

91 Euca globulus

LATU 19 111-9063-

12-91 Euca maidenii

Fraction 1 hole 45 mm oversize 000 000

Fraction 2 slot 8 mm overthick 604 671

Fraction 3 hole 13 mm large accept 6898 6551

Fraction 4 hole 7 mm small accept 2036 2264

Fraction 5 hole 3 mm pin 424 471Fraction 6 fines 038 043

Total 10000 10000

4 DiscussionThe basic density for different samples of the same specie varies quite much showing

the existing non homogeneity in the raw material A rough estimate is that the density

today could vary ~100 kgm3 between different stands of the same specie This could be

seen as an opportunity for future breeding work but could also cause problem for the

future mill if the raw material is not recorded controlled and handled properly

The five types of eucalyptus investigated could easily be divided into three groups in

respect of the basic density

bull Low density Egrandis

bull Medium density E dunnii and Eglobulus

bull High density Emaidenii and Ebicostata

The proportion of low medium and high density chips that will be processed will

impact on the average chip mix density

5 ConclusionToday the raw material available for the Montes del Plata pulp mill have a big variation

in basic density The analysis of data shows that the wood specie had a significant

influence on the basic density and that the five investigated types of eucalyptus could be

divided into three groups low medium and high density species

The variation for different samples of the same specie varies also quite much The

mapping study shows that differences of about 100 kgm3 could be found between

stands

The density variation both between and within species makes it very important to

control the chip flow to the digesters and to have developed systems for steering andcontrolling the raw material

7252019 Chip Preparation and Chip Properties_no Recomendations

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Chi Pre aration and Chi Pro erties

6 Recommendations

7252019 Chip Preparation and Chip Properties_no Recomendations

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Chi Pre aration and Chi Pro erties

7 Appendices

Table 1 Chip basic density and raw material data from stands at soil type 91 93 and 8

983123983137983149983152983148983141 983107983151983140983141 983117983108983120 983116 983137983156983157 983113983108 983112983141983145983156983144 983156983151983156 983086 983149 983112983141983145983156983144 983139983151983149 983086 983149 983108983106983112 983139983149 983107 983144983145983152 983106 9830869831089830869830809831479831439830879831493) 983105983143983141 983123983152983141983139983145983141 983119983154983145983143983141983150

114-9352-13-91 17 3115 2638 2032 580 13 E dunnii111-9063-12-91 19 2014 1619 1708 645 12 E maidenii

116-113-12-91 18 2083 1627 1943 581 12 E bicostata

61-13-12-91 16 1968 1592 1832 534 12 E globulus Otros115-9033-18-91 24 2226 1740 1845 451 18 E grandis115-12-15-91 21 2281 1843 1872 431 15 E grandis

115-5008-16-91 22 2524 2089 1768 470 16 E grandis

111-9110-16-91 23 2179 1834 2498 633 16 E maidenii

111-9850-12-91 20 2260 1859 1823 602 12 E maidenii61-9145-12-91 15 2346 1872 2041 593 12 E globulus Otros

114-24-9-91 35 2778 2307 2030 537 9 E dunnii

115-9055-10-91 48 1971 1499 1637 428 10 E grandis

114-48-11-91 47 2844 2022 1773 597 11 E dunnii

114-9108-14-91 53 2879 2423 2397 568 14 E dunnii

61-9156-13-91 52 2125 1693 1890 594 13 E g lobulus Jeeralang

61-9102-10-91 46 2217 1843 2000 563 10 E globulus Jeeralang

111-9131-10-91 50 1673 1337 1627 609 10 E maideni i

116-9137-10-91 49 2110 1713 1933 573 10 E bicostata116-9322-14-91 54 2113 1713 2030 605 14 E bicostata

111-9118-15-91 55 2600 2177 2000 667 15 E maidenii

115-114-12-91 51 2060 1647 2007 461 12 E grandis

983123983137983149983152983148983141 983107983151983140983141 983117983108983120 983116 983137983156983157 983113983108 983112983141983145983156983144 983156983151983156 983086 983149 983112983141983145983156983144 983139983151983149 983086 983149 983108983106983112 983139983149 983107 983144983145983152 983106 9830869831089830869830809831479831439830879831493) 983105983143983141 983123983152983141983139983145983141 983119983154983145983143983141983150

116-9345-14-93 31 1980 1608 1780 595 14 E bicostata111-9427-12-93 29 1965 1571 1760 626 12 E maideni i

61-9141-10-93 25 2057 1652 1947 571 10 E globulus Otros111-9207-15-93 33 2382 2005 1925 620 15 E maideni i

61-68-10-93 26 2063 1680 1933 555 10 E globulus Jeeralang114-9344-13-93 28 2943 2473 2033 537 13 E dunnii

115-9035-10-93 27 2558 2179 2385 452 10 E grandis

115-9088-17-93 32 2472 2102 2100 466 16 E grandis111-9134-12-93 30 1867 1459 1840 597 12 E maideni i

111-13-18-92 34 2580 2175 2113 629 18 E maidenii

115-9150-12-93 60 2260 1863 2183 434 12 E grandis

61-33-12-93 58 2130 1630 1723 623 12 E globulus Jeeralang114-84-14-93 63 2705 2236 1927 529 14 E dunnii

61-52-13-93 62 2218 1592 1998 598 13 E globulus Jeeralang

116-9177-10-93 56 1734 1188 1547 613 10 E bicostata

116-55-12-93 61 2098 1659 1687 611 12 E bicostata111-9117-10-93 57 2264 1866 1890 633 10 E maidenii111-13-14-93 64 2451 2017 1860 639 14 E maidenii

115-24-18-93 65 2752 2364 2283 507 18 E grandis

983123983137983149983152983148983141 983107983151983140983141 983117983108983120 983116 983137983156983157 983113983108 983112983141983145983156983144 983156983151983156 983086 983149 983112983141983145983156983144 983139983151983149 983086 983149 983108983106983112 983139983149 983107 983144983145983152 983106 9830869831089830869830809831479831439830879831493) 983105983143983141 983123983152983141983139983145983141 983119983154983145983143983141983150

111-22-15-815 45A 2308 1973 2300 634 15 E maidenii111-30-15-815 45B 2377 1940 2095 636 15 E maidenii

115-29-16-815 14 2418 2038 2305 435 16 E grandis

115-27-16-815 13 2188 1813 2022 399 16 E grandis

115-18-12-87 8 1952 1598 1792 417 12 E grandis

115-21-12-87 9 2020 1582 1750 395 12 E grandis

61-13-15-815 12 2418 2048 2574 585 15 E globulus Otros114-0-12-88 7 2445 2022 2142 506 11 E dunnii

115-9007-11-802a 42 2310 1833 2200 433 11 E grandis

115-9068-15-815 44 2197 1767 2120 433 15 E grandis

111-0-13-815 10 2000 1668 2123 590 13 E maidenii

983123983137983149983152983148983145983150983143 983140983137983156983137

Average

Wood Mapping and Frame Setting

983123983137983149983152983148983145983150983143 983140983137983156983137

Average

Sample ID

Sample ID

Soil 91

Soil 93

Sample ID 983123983137983149983152983148983145983150983143 983140983137983156983137

Soil 8 Average

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Chi Pre aration and Chi Pro erties

Table 2 Chip basic density and raw material data from stands at soil type 2

983123983137983149983152983148983141 983107983151983140983141 983117983108983120 983116 983137983156983157 983113983108 983112983141983145983156983144 983156983151983156 983086 983149 983112983141983145983156983144 983139983151983149 983086 983149 983108983106983112 983139983149 983107 983144983145983152 983106 9830869831089830869830809831479831439830879831493) 983105983143983141 983123983152983141983139983145983141 983119983154983145983143983141983150

115-20-15-211 6 1717 1363 1647 396 15 E grandis

111-73-10-212 5 2336 1826 1888 581 10 E maidenii61-136-10-212 3 2447 2008 1855 569 10 E globulus Otros

61-1-10-212 2 1769 1311 1517 546 10 E globulus Otros

61-9306-8-212 1 1958 1485 1608 537 8 E globulus Otros

61-176-10-212 4 1925 1454 1617 554 10 E globulus Otros

61-T-14-210 40 2170 1740 2027 553 14 E globulus Otros

61-0-13-211b 36 2203 1820 2143 553 13 E globulus Otros

111-T247-13-212 39 2257 1763 1823 629 13 E maideni i

Age

Wood specie Average Stdev Min Max average

Eucalyptus grandis 438 2973 395 507 14Eucalyptus dunnii 551 3200 506 597 12

Eucalyptus globulus 569 2778 533 623 11

Eucalyptus maidenii 623 2224 581 667 13Eucalyptus bicostata 596 1643 573 613 12

Basic density chips

Sample ID 983123983137983149983152983148983145983150983143 983140983137983156983137

Soil 2 Average

Wood Mapping and Frame Setting

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Chi Pre aration and Chi Pro erties

Distribution

ArchivingLibrary Karlstad Research Centre

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Chi Pre aration and Chi Pro erties

3 Results

31 Basic density of chips

The basic density of the trees in the wood mapping part of the study was measured both

on one wood disc from each harvested tree and on the chips from the 3 1-m logs The

figures from the discs were analyzed with multivariate methods (software SIMCA) for

the influence of wood specie age and soil type The result showed that the wood specie

was the only parameter that had a significant influence on the basic density No

correlation with age or soil type was found report rdquoRaw Material Mapping in Uruguay

for Montes del Plata - Wood and Bark Analysisrdquo

For the frame setting part of the study the basic density was solely measured on the

chips The measurement was done according to standard method (SCAN-CM 43-95)

The average basic density per specie is found in Table 1 The values for each individual

stand are found in Appendix Table 1-3

Table 1 Average density for the species

Age Basic density kgm3Wood Specie

average average stdev min max

Eucalyptus grandis 14 438 2973 395 507

Eucalyptus dunnii 12 551 3200 506 597

Eucalyptus globulus 11 569 2778 533 623

Eucalyptus maidenii 13 623 2224 581 667

Eucalyptus bicostata 12 596 1643 573 613

The density variation within and between species could also be illustrated in a

frequency-distribution diagram Figure 6 It is obvious that Egrandis and Emaidenii

are separated from the other species with only a minor overlap The amount of samples

of Edunni and Ebicostata were limited making the normal distribution not apparent

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Chi Pre aration and Chi Pro erties

Basic density distribution between species

0

1

2

3

4

5

6

7

8

9

10

375-

399

400-

424

425-

449

450-

474

475-

499

500-

524

525-

549

550-

574

575-

599

600-

624

625-

649

650-

674

n u m b e r o f s a m p l e s

Ebicostata

Edunnii

E globulus

E grandis

E maidenii

Figure 6 Distribution of basic density for different species

32 Chip size and chip size distribution

The size of the chips from the chipper in LATU is about 3 cm in length and less than 3mm thickness Figure 7

Figure 7 Typical chips from the LATU chipper

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Chi Pre aration and Chi Pro erties

The chips size distribution was measured for two samples giving an idea of the size

distribution from the laboratory chipper Both samples gave a total accept fraction of

88-89 (fraction 3+4) Table 2

Table 2 Result from chips classification of two different samples SCAN-CM 4088

SIZE DISTRIBUTION WILEN

SCREEN

LATU 16 61-13-12-

91 Euca globulus

LATU 19 111-9063-

12-91 Euca maidenii

Fraction 1 hole 45 mm oversize 000 000

Fraction 2 slot 8 mm overthick 604 671

Fraction 3 hole 13 mm large accept 6898 6551

Fraction 4 hole 7 mm small accept 2036 2264

Fraction 5 hole 3 mm pin 424 471Fraction 6 fines 038 043

Total 10000 10000

4 DiscussionThe basic density for different samples of the same specie varies quite much showing

the existing non homogeneity in the raw material A rough estimate is that the density

today could vary ~100 kgm3 between different stands of the same specie This could be

seen as an opportunity for future breeding work but could also cause problem for the

future mill if the raw material is not recorded controlled and handled properly

The five types of eucalyptus investigated could easily be divided into three groups in

respect of the basic density

bull Low density Egrandis

bull Medium density E dunnii and Eglobulus

bull High density Emaidenii and Ebicostata

The proportion of low medium and high density chips that will be processed will

impact on the average chip mix density

5 ConclusionToday the raw material available for the Montes del Plata pulp mill have a big variation

in basic density The analysis of data shows that the wood specie had a significant

influence on the basic density and that the five investigated types of eucalyptus could be

divided into three groups low medium and high density species

The variation for different samples of the same specie varies also quite much The

mapping study shows that differences of about 100 kgm3 could be found between

stands

The density variation both between and within species makes it very important to

control the chip flow to the digesters and to have developed systems for steering andcontrolling the raw material

7252019 Chip Preparation and Chip Properties_no Recomendations

httpslidepdfcomreaderfullchip-preparation-and-chip-propertiesno-recomendations 1013

Chi Pre aration and Chi Pro erties

6 Recommendations

7252019 Chip Preparation and Chip Properties_no Recomendations

httpslidepdfcomreaderfullchip-preparation-and-chip-propertiesno-recomendations 1113

Chi Pre aration and Chi Pro erties

7 Appendices

Table 1 Chip basic density and raw material data from stands at soil type 91 93 and 8

983123983137983149983152983148983141 983107983151983140983141 983117983108983120 983116 983137983156983157 983113983108 983112983141983145983156983144 983156983151983156 983086 983149 983112983141983145983156983144 983139983151983149 983086 983149 983108983106983112 983139983149 983107 983144983145983152 983106 9830869831089830869830809831479831439830879831493) 983105983143983141 983123983152983141983139983145983141 983119983154983145983143983141983150

114-9352-13-91 17 3115 2638 2032 580 13 E dunnii111-9063-12-91 19 2014 1619 1708 645 12 E maidenii

116-113-12-91 18 2083 1627 1943 581 12 E bicostata

61-13-12-91 16 1968 1592 1832 534 12 E globulus Otros115-9033-18-91 24 2226 1740 1845 451 18 E grandis115-12-15-91 21 2281 1843 1872 431 15 E grandis

115-5008-16-91 22 2524 2089 1768 470 16 E grandis

111-9110-16-91 23 2179 1834 2498 633 16 E maidenii

111-9850-12-91 20 2260 1859 1823 602 12 E maidenii61-9145-12-91 15 2346 1872 2041 593 12 E globulus Otros

114-24-9-91 35 2778 2307 2030 537 9 E dunnii

115-9055-10-91 48 1971 1499 1637 428 10 E grandis

114-48-11-91 47 2844 2022 1773 597 11 E dunnii

114-9108-14-91 53 2879 2423 2397 568 14 E dunnii

61-9156-13-91 52 2125 1693 1890 594 13 E g lobulus Jeeralang

61-9102-10-91 46 2217 1843 2000 563 10 E globulus Jeeralang

111-9131-10-91 50 1673 1337 1627 609 10 E maideni i

116-9137-10-91 49 2110 1713 1933 573 10 E bicostata116-9322-14-91 54 2113 1713 2030 605 14 E bicostata

111-9118-15-91 55 2600 2177 2000 667 15 E maidenii

115-114-12-91 51 2060 1647 2007 461 12 E grandis

983123983137983149983152983148983141 983107983151983140983141 983117983108983120 983116 983137983156983157 983113983108 983112983141983145983156983144 983156983151983156 983086 983149 983112983141983145983156983144 983139983151983149 983086 983149 983108983106983112 983139983149 983107 983144983145983152 983106 9830869831089830869830809831479831439830879831493) 983105983143983141 983123983152983141983139983145983141 983119983154983145983143983141983150

116-9345-14-93 31 1980 1608 1780 595 14 E bicostata111-9427-12-93 29 1965 1571 1760 626 12 E maideni i

61-9141-10-93 25 2057 1652 1947 571 10 E globulus Otros111-9207-15-93 33 2382 2005 1925 620 15 E maideni i

61-68-10-93 26 2063 1680 1933 555 10 E globulus Jeeralang114-9344-13-93 28 2943 2473 2033 537 13 E dunnii

115-9035-10-93 27 2558 2179 2385 452 10 E grandis

115-9088-17-93 32 2472 2102 2100 466 16 E grandis111-9134-12-93 30 1867 1459 1840 597 12 E maideni i

111-13-18-92 34 2580 2175 2113 629 18 E maidenii

115-9150-12-93 60 2260 1863 2183 434 12 E grandis

61-33-12-93 58 2130 1630 1723 623 12 E globulus Jeeralang114-84-14-93 63 2705 2236 1927 529 14 E dunnii

61-52-13-93 62 2218 1592 1998 598 13 E globulus Jeeralang

116-9177-10-93 56 1734 1188 1547 613 10 E bicostata

116-55-12-93 61 2098 1659 1687 611 12 E bicostata111-9117-10-93 57 2264 1866 1890 633 10 E maidenii111-13-14-93 64 2451 2017 1860 639 14 E maidenii

115-24-18-93 65 2752 2364 2283 507 18 E grandis

983123983137983149983152983148983141 983107983151983140983141 983117983108983120 983116 983137983156983157 983113983108 983112983141983145983156983144 983156983151983156 983086 983149 983112983141983145983156983144 983139983151983149 983086 983149 983108983106983112 983139983149 983107 983144983145983152 983106 9830869831089830869830809831479831439830879831493) 983105983143983141 983123983152983141983139983145983141 983119983154983145983143983141983150

111-22-15-815 45A 2308 1973 2300 634 15 E maidenii111-30-15-815 45B 2377 1940 2095 636 15 E maidenii

115-29-16-815 14 2418 2038 2305 435 16 E grandis

115-27-16-815 13 2188 1813 2022 399 16 E grandis

115-18-12-87 8 1952 1598 1792 417 12 E grandis

115-21-12-87 9 2020 1582 1750 395 12 E grandis

61-13-15-815 12 2418 2048 2574 585 15 E globulus Otros114-0-12-88 7 2445 2022 2142 506 11 E dunnii

115-9007-11-802a 42 2310 1833 2200 433 11 E grandis

115-9068-15-815 44 2197 1767 2120 433 15 E grandis

111-0-13-815 10 2000 1668 2123 590 13 E maidenii

983123983137983149983152983148983145983150983143 983140983137983156983137

Average

Wood Mapping and Frame Setting

983123983137983149983152983148983145983150983143 983140983137983156983137

Average

Sample ID

Sample ID

Soil 91

Soil 93

Sample ID 983123983137983149983152983148983145983150983143 983140983137983156983137

Soil 8 Average

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Chi Pre aration and Chi Pro erties

Table 2 Chip basic density and raw material data from stands at soil type 2

983123983137983149983152983148983141 983107983151983140983141 983117983108983120 983116 983137983156983157 983113983108 983112983141983145983156983144 983156983151983156 983086 983149 983112983141983145983156983144 983139983151983149 983086 983149 983108983106983112 983139983149 983107 983144983145983152 983106 9830869831089830869830809831479831439830879831493) 983105983143983141 983123983152983141983139983145983141 983119983154983145983143983141983150

115-20-15-211 6 1717 1363 1647 396 15 E grandis

111-73-10-212 5 2336 1826 1888 581 10 E maidenii61-136-10-212 3 2447 2008 1855 569 10 E globulus Otros

61-1-10-212 2 1769 1311 1517 546 10 E globulus Otros

61-9306-8-212 1 1958 1485 1608 537 8 E globulus Otros

61-176-10-212 4 1925 1454 1617 554 10 E globulus Otros

61-T-14-210 40 2170 1740 2027 553 14 E globulus Otros

61-0-13-211b 36 2203 1820 2143 553 13 E globulus Otros

111-T247-13-212 39 2257 1763 1823 629 13 E maideni i

Age

Wood specie Average Stdev Min Max average

Eucalyptus grandis 438 2973 395 507 14Eucalyptus dunnii 551 3200 506 597 12

Eucalyptus globulus 569 2778 533 623 11

Eucalyptus maidenii 623 2224 581 667 13Eucalyptus bicostata 596 1643 573 613 12

Basic density chips

Sample ID 983123983137983149983152983148983145983150983143 983140983137983156983137

Soil 2 Average

Wood Mapping and Frame Setting

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Chi Pre aration and Chi Pro erties

Distribution

ArchivingLibrary Karlstad Research Centre

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Chi Pre aration and Chi Pro erties

Basic density distribution between species

0

1

2

3

4

5

6

7

8

9

10

375-

399

400-

424

425-

449

450-

474

475-

499

500-

524

525-

549

550-

574

575-

599

600-

624

625-

649

650-

674

n u m b e r o f s a m p l e s

Ebicostata

Edunnii

E globulus

E grandis

E maidenii

Figure 6 Distribution of basic density for different species

32 Chip size and chip size distribution

The size of the chips from the chipper in LATU is about 3 cm in length and less than 3mm thickness Figure 7

Figure 7 Typical chips from the LATU chipper

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Chi Pre aration and Chi Pro erties

The chips size distribution was measured for two samples giving an idea of the size

distribution from the laboratory chipper Both samples gave a total accept fraction of

88-89 (fraction 3+4) Table 2

Table 2 Result from chips classification of two different samples SCAN-CM 4088

SIZE DISTRIBUTION WILEN

SCREEN

LATU 16 61-13-12-

91 Euca globulus

LATU 19 111-9063-

12-91 Euca maidenii

Fraction 1 hole 45 mm oversize 000 000

Fraction 2 slot 8 mm overthick 604 671

Fraction 3 hole 13 mm large accept 6898 6551

Fraction 4 hole 7 mm small accept 2036 2264

Fraction 5 hole 3 mm pin 424 471Fraction 6 fines 038 043

Total 10000 10000

4 DiscussionThe basic density for different samples of the same specie varies quite much showing

the existing non homogeneity in the raw material A rough estimate is that the density

today could vary ~100 kgm3 between different stands of the same specie This could be

seen as an opportunity for future breeding work but could also cause problem for the

future mill if the raw material is not recorded controlled and handled properly

The five types of eucalyptus investigated could easily be divided into three groups in

respect of the basic density

bull Low density Egrandis

bull Medium density E dunnii and Eglobulus

bull High density Emaidenii and Ebicostata

The proportion of low medium and high density chips that will be processed will

impact on the average chip mix density

5 ConclusionToday the raw material available for the Montes del Plata pulp mill have a big variation

in basic density The analysis of data shows that the wood specie had a significant

influence on the basic density and that the five investigated types of eucalyptus could be

divided into three groups low medium and high density species

The variation for different samples of the same specie varies also quite much The

mapping study shows that differences of about 100 kgm3 could be found between

stands

The density variation both between and within species makes it very important to

control the chip flow to the digesters and to have developed systems for steering andcontrolling the raw material

7252019 Chip Preparation and Chip Properties_no Recomendations

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Chi Pre aration and Chi Pro erties

6 Recommendations

7252019 Chip Preparation and Chip Properties_no Recomendations

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Chi Pre aration and Chi Pro erties

7 Appendices

Table 1 Chip basic density and raw material data from stands at soil type 91 93 and 8

983123983137983149983152983148983141 983107983151983140983141 983117983108983120 983116 983137983156983157 983113983108 983112983141983145983156983144 983156983151983156 983086 983149 983112983141983145983156983144 983139983151983149 983086 983149 983108983106983112 983139983149 983107 983144983145983152 983106 9830869831089830869830809831479831439830879831493) 983105983143983141 983123983152983141983139983145983141 983119983154983145983143983141983150

114-9352-13-91 17 3115 2638 2032 580 13 E dunnii111-9063-12-91 19 2014 1619 1708 645 12 E maidenii

116-113-12-91 18 2083 1627 1943 581 12 E bicostata

61-13-12-91 16 1968 1592 1832 534 12 E globulus Otros115-9033-18-91 24 2226 1740 1845 451 18 E grandis115-12-15-91 21 2281 1843 1872 431 15 E grandis

115-5008-16-91 22 2524 2089 1768 470 16 E grandis

111-9110-16-91 23 2179 1834 2498 633 16 E maidenii

111-9850-12-91 20 2260 1859 1823 602 12 E maidenii61-9145-12-91 15 2346 1872 2041 593 12 E globulus Otros

114-24-9-91 35 2778 2307 2030 537 9 E dunnii

115-9055-10-91 48 1971 1499 1637 428 10 E grandis

114-48-11-91 47 2844 2022 1773 597 11 E dunnii

114-9108-14-91 53 2879 2423 2397 568 14 E dunnii

61-9156-13-91 52 2125 1693 1890 594 13 E g lobulus Jeeralang

61-9102-10-91 46 2217 1843 2000 563 10 E globulus Jeeralang

111-9131-10-91 50 1673 1337 1627 609 10 E maideni i

116-9137-10-91 49 2110 1713 1933 573 10 E bicostata116-9322-14-91 54 2113 1713 2030 605 14 E bicostata

111-9118-15-91 55 2600 2177 2000 667 15 E maidenii

115-114-12-91 51 2060 1647 2007 461 12 E grandis

983123983137983149983152983148983141 983107983151983140983141 983117983108983120 983116 983137983156983157 983113983108 983112983141983145983156983144 983156983151983156 983086 983149 983112983141983145983156983144 983139983151983149 983086 983149 983108983106983112 983139983149 983107 983144983145983152 983106 9830869831089830869830809831479831439830879831493) 983105983143983141 983123983152983141983139983145983141 983119983154983145983143983141983150

116-9345-14-93 31 1980 1608 1780 595 14 E bicostata111-9427-12-93 29 1965 1571 1760 626 12 E maideni i

61-9141-10-93 25 2057 1652 1947 571 10 E globulus Otros111-9207-15-93 33 2382 2005 1925 620 15 E maideni i

61-68-10-93 26 2063 1680 1933 555 10 E globulus Jeeralang114-9344-13-93 28 2943 2473 2033 537 13 E dunnii

115-9035-10-93 27 2558 2179 2385 452 10 E grandis

115-9088-17-93 32 2472 2102 2100 466 16 E grandis111-9134-12-93 30 1867 1459 1840 597 12 E maideni i

111-13-18-92 34 2580 2175 2113 629 18 E maidenii

115-9150-12-93 60 2260 1863 2183 434 12 E grandis

61-33-12-93 58 2130 1630 1723 623 12 E globulus Jeeralang114-84-14-93 63 2705 2236 1927 529 14 E dunnii

61-52-13-93 62 2218 1592 1998 598 13 E globulus Jeeralang

116-9177-10-93 56 1734 1188 1547 613 10 E bicostata

116-55-12-93 61 2098 1659 1687 611 12 E bicostata111-9117-10-93 57 2264 1866 1890 633 10 E maidenii111-13-14-93 64 2451 2017 1860 639 14 E maidenii

115-24-18-93 65 2752 2364 2283 507 18 E grandis

983123983137983149983152983148983141 983107983151983140983141 983117983108983120 983116 983137983156983157 983113983108 983112983141983145983156983144 983156983151983156 983086 983149 983112983141983145983156983144 983139983151983149 983086 983149 983108983106983112 983139983149 983107 983144983145983152 983106 9830869831089830869830809831479831439830879831493) 983105983143983141 983123983152983141983139983145983141 983119983154983145983143983141983150

111-22-15-815 45A 2308 1973 2300 634 15 E maidenii111-30-15-815 45B 2377 1940 2095 636 15 E maidenii

115-29-16-815 14 2418 2038 2305 435 16 E grandis

115-27-16-815 13 2188 1813 2022 399 16 E grandis

115-18-12-87 8 1952 1598 1792 417 12 E grandis

115-21-12-87 9 2020 1582 1750 395 12 E grandis

61-13-15-815 12 2418 2048 2574 585 15 E globulus Otros114-0-12-88 7 2445 2022 2142 506 11 E dunnii

115-9007-11-802a 42 2310 1833 2200 433 11 E grandis

115-9068-15-815 44 2197 1767 2120 433 15 E grandis

111-0-13-815 10 2000 1668 2123 590 13 E maidenii

983123983137983149983152983148983145983150983143 983140983137983156983137

Average

Wood Mapping and Frame Setting

983123983137983149983152983148983145983150983143 983140983137983156983137

Average

Sample ID

Sample ID

Soil 91

Soil 93

Sample ID 983123983137983149983152983148983145983150983143 983140983137983156983137

Soil 8 Average

7252019 Chip Preparation and Chip Properties_no Recomendations

httpslidepdfcomreaderfullchip-preparation-and-chip-propertiesno-recomendations 1213

Chi Pre aration and Chi Pro erties

Table 2 Chip basic density and raw material data from stands at soil type 2

983123983137983149983152983148983141 983107983151983140983141 983117983108983120 983116 983137983156983157 983113983108 983112983141983145983156983144 983156983151983156 983086 983149 983112983141983145983156983144 983139983151983149 983086 983149 983108983106983112 983139983149 983107 983144983145983152 983106 9830869831089830869830809831479831439830879831493) 983105983143983141 983123983152983141983139983145983141 983119983154983145983143983141983150

115-20-15-211 6 1717 1363 1647 396 15 E grandis

111-73-10-212 5 2336 1826 1888 581 10 E maidenii61-136-10-212 3 2447 2008 1855 569 10 E globulus Otros

61-1-10-212 2 1769 1311 1517 546 10 E globulus Otros

61-9306-8-212 1 1958 1485 1608 537 8 E globulus Otros

61-176-10-212 4 1925 1454 1617 554 10 E globulus Otros

61-T-14-210 40 2170 1740 2027 553 14 E globulus Otros

61-0-13-211b 36 2203 1820 2143 553 13 E globulus Otros

111-T247-13-212 39 2257 1763 1823 629 13 E maideni i

Age

Wood specie Average Stdev Min Max average

Eucalyptus grandis 438 2973 395 507 14Eucalyptus dunnii 551 3200 506 597 12

Eucalyptus globulus 569 2778 533 623 11

Eucalyptus maidenii 623 2224 581 667 13Eucalyptus bicostata 596 1643 573 613 12

Basic density chips

Sample ID 983123983137983149983152983148983145983150983143 983140983137983156983137

Soil 2 Average

Wood Mapping and Frame Setting

7252019 Chip Preparation and Chip Properties_no Recomendations

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Chi Pre aration and Chi Pro erties

Distribution

ArchivingLibrary Karlstad Research Centre

7252019 Chip Preparation and Chip Properties_no Recomendations

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Chi Pre aration and Chi Pro erties

The chips size distribution was measured for two samples giving an idea of the size

distribution from the laboratory chipper Both samples gave a total accept fraction of

88-89 (fraction 3+4) Table 2

Table 2 Result from chips classification of two different samples SCAN-CM 4088

SIZE DISTRIBUTION WILEN

SCREEN

LATU 16 61-13-12-

91 Euca globulus

LATU 19 111-9063-

12-91 Euca maidenii

Fraction 1 hole 45 mm oversize 000 000

Fraction 2 slot 8 mm overthick 604 671

Fraction 3 hole 13 mm large accept 6898 6551

Fraction 4 hole 7 mm small accept 2036 2264

Fraction 5 hole 3 mm pin 424 471Fraction 6 fines 038 043

Total 10000 10000

4 DiscussionThe basic density for different samples of the same specie varies quite much showing

the existing non homogeneity in the raw material A rough estimate is that the density

today could vary ~100 kgm3 between different stands of the same specie This could be

seen as an opportunity for future breeding work but could also cause problem for the

future mill if the raw material is not recorded controlled and handled properly

The five types of eucalyptus investigated could easily be divided into three groups in

respect of the basic density

bull Low density Egrandis

bull Medium density E dunnii and Eglobulus

bull High density Emaidenii and Ebicostata

The proportion of low medium and high density chips that will be processed will

impact on the average chip mix density

5 ConclusionToday the raw material available for the Montes del Plata pulp mill have a big variation

in basic density The analysis of data shows that the wood specie had a significant

influence on the basic density and that the five investigated types of eucalyptus could be

divided into three groups low medium and high density species

The variation for different samples of the same specie varies also quite much The

mapping study shows that differences of about 100 kgm3 could be found between

stands

The density variation both between and within species makes it very important to

control the chip flow to the digesters and to have developed systems for steering andcontrolling the raw material

7252019 Chip Preparation and Chip Properties_no Recomendations

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Chi Pre aration and Chi Pro erties

6 Recommendations

7252019 Chip Preparation and Chip Properties_no Recomendations

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Chi Pre aration and Chi Pro erties

7 Appendices

Table 1 Chip basic density and raw material data from stands at soil type 91 93 and 8

983123983137983149983152983148983141 983107983151983140983141 983117983108983120 983116 983137983156983157 983113983108 983112983141983145983156983144 983156983151983156 983086 983149 983112983141983145983156983144 983139983151983149 983086 983149 983108983106983112 983139983149 983107 983144983145983152 983106 9830869831089830869830809831479831439830879831493) 983105983143983141 983123983152983141983139983145983141 983119983154983145983143983141983150

114-9352-13-91 17 3115 2638 2032 580 13 E dunnii111-9063-12-91 19 2014 1619 1708 645 12 E maidenii

116-113-12-91 18 2083 1627 1943 581 12 E bicostata

61-13-12-91 16 1968 1592 1832 534 12 E globulus Otros115-9033-18-91 24 2226 1740 1845 451 18 E grandis115-12-15-91 21 2281 1843 1872 431 15 E grandis

115-5008-16-91 22 2524 2089 1768 470 16 E grandis

111-9110-16-91 23 2179 1834 2498 633 16 E maidenii

111-9850-12-91 20 2260 1859 1823 602 12 E maidenii61-9145-12-91 15 2346 1872 2041 593 12 E globulus Otros

114-24-9-91 35 2778 2307 2030 537 9 E dunnii

115-9055-10-91 48 1971 1499 1637 428 10 E grandis

114-48-11-91 47 2844 2022 1773 597 11 E dunnii

114-9108-14-91 53 2879 2423 2397 568 14 E dunnii

61-9156-13-91 52 2125 1693 1890 594 13 E g lobulus Jeeralang

61-9102-10-91 46 2217 1843 2000 563 10 E globulus Jeeralang

111-9131-10-91 50 1673 1337 1627 609 10 E maideni i

116-9137-10-91 49 2110 1713 1933 573 10 E bicostata116-9322-14-91 54 2113 1713 2030 605 14 E bicostata

111-9118-15-91 55 2600 2177 2000 667 15 E maidenii

115-114-12-91 51 2060 1647 2007 461 12 E grandis

983123983137983149983152983148983141 983107983151983140983141 983117983108983120 983116 983137983156983157 983113983108 983112983141983145983156983144 983156983151983156 983086 983149 983112983141983145983156983144 983139983151983149 983086 983149 983108983106983112 983139983149 983107 983144983145983152 983106 9830869831089830869830809831479831439830879831493) 983105983143983141 983123983152983141983139983145983141 983119983154983145983143983141983150

116-9345-14-93 31 1980 1608 1780 595 14 E bicostata111-9427-12-93 29 1965 1571 1760 626 12 E maideni i

61-9141-10-93 25 2057 1652 1947 571 10 E globulus Otros111-9207-15-93 33 2382 2005 1925 620 15 E maideni i

61-68-10-93 26 2063 1680 1933 555 10 E globulus Jeeralang114-9344-13-93 28 2943 2473 2033 537 13 E dunnii

115-9035-10-93 27 2558 2179 2385 452 10 E grandis

115-9088-17-93 32 2472 2102 2100 466 16 E grandis111-9134-12-93 30 1867 1459 1840 597 12 E maideni i

111-13-18-92 34 2580 2175 2113 629 18 E maidenii

115-9150-12-93 60 2260 1863 2183 434 12 E grandis

61-33-12-93 58 2130 1630 1723 623 12 E globulus Jeeralang114-84-14-93 63 2705 2236 1927 529 14 E dunnii

61-52-13-93 62 2218 1592 1998 598 13 E globulus Jeeralang

116-9177-10-93 56 1734 1188 1547 613 10 E bicostata

116-55-12-93 61 2098 1659 1687 611 12 E bicostata111-9117-10-93 57 2264 1866 1890 633 10 E maidenii111-13-14-93 64 2451 2017 1860 639 14 E maidenii

115-24-18-93 65 2752 2364 2283 507 18 E grandis

983123983137983149983152983148983141 983107983151983140983141 983117983108983120 983116 983137983156983157 983113983108 983112983141983145983156983144 983156983151983156 983086 983149 983112983141983145983156983144 983139983151983149 983086 983149 983108983106983112 983139983149 983107 983144983145983152 983106 9830869831089830869830809831479831439830879831493) 983105983143983141 983123983152983141983139983145983141 983119983154983145983143983141983150

111-22-15-815 45A 2308 1973 2300 634 15 E maidenii111-30-15-815 45B 2377 1940 2095 636 15 E maidenii

115-29-16-815 14 2418 2038 2305 435 16 E grandis

115-27-16-815 13 2188 1813 2022 399 16 E grandis

115-18-12-87 8 1952 1598 1792 417 12 E grandis

115-21-12-87 9 2020 1582 1750 395 12 E grandis

61-13-15-815 12 2418 2048 2574 585 15 E globulus Otros114-0-12-88 7 2445 2022 2142 506 11 E dunnii

115-9007-11-802a 42 2310 1833 2200 433 11 E grandis

115-9068-15-815 44 2197 1767 2120 433 15 E grandis

111-0-13-815 10 2000 1668 2123 590 13 E maidenii

983123983137983149983152983148983145983150983143 983140983137983156983137

Average

Wood Mapping and Frame Setting

983123983137983149983152983148983145983150983143 983140983137983156983137

Average

Sample ID

Sample ID

Soil 91

Soil 93

Sample ID 983123983137983149983152983148983145983150983143 983140983137983156983137

Soil 8 Average

7252019 Chip Preparation and Chip Properties_no Recomendations

httpslidepdfcomreaderfullchip-preparation-and-chip-propertiesno-recomendations 1213

Chi Pre aration and Chi Pro erties

Table 2 Chip basic density and raw material data from stands at soil type 2

983123983137983149983152983148983141 983107983151983140983141 983117983108983120 983116 983137983156983157 983113983108 983112983141983145983156983144 983156983151983156 983086 983149 983112983141983145983156983144 983139983151983149 983086 983149 983108983106983112 983139983149 983107 983144983145983152 983106 9830869831089830869830809831479831439830879831493) 983105983143983141 983123983152983141983139983145983141 983119983154983145983143983141983150

115-20-15-211 6 1717 1363 1647 396 15 E grandis

111-73-10-212 5 2336 1826 1888 581 10 E maidenii61-136-10-212 3 2447 2008 1855 569 10 E globulus Otros

61-1-10-212 2 1769 1311 1517 546 10 E globulus Otros

61-9306-8-212 1 1958 1485 1608 537 8 E globulus Otros

61-176-10-212 4 1925 1454 1617 554 10 E globulus Otros

61-T-14-210 40 2170 1740 2027 553 14 E globulus Otros

61-0-13-211b 36 2203 1820 2143 553 13 E globulus Otros

111-T247-13-212 39 2257 1763 1823 629 13 E maideni i

Age

Wood specie Average Stdev Min Max average

Eucalyptus grandis 438 2973 395 507 14Eucalyptus dunnii 551 3200 506 597 12

Eucalyptus globulus 569 2778 533 623 11

Eucalyptus maidenii 623 2224 581 667 13Eucalyptus bicostata 596 1643 573 613 12

Basic density chips

Sample ID 983123983137983149983152983148983145983150983143 983140983137983156983137

Soil 2 Average

Wood Mapping and Frame Setting

7252019 Chip Preparation and Chip Properties_no Recomendations

httpslidepdfcomreaderfullchip-preparation-and-chip-propertiesno-recomendations 1313

Chi Pre aration and Chi Pro erties

Distribution

ArchivingLibrary Karlstad Research Centre

7252019 Chip Preparation and Chip Properties_no Recomendations

httpslidepdfcomreaderfullchip-preparation-and-chip-propertiesno-recomendations 1013

Chi Pre aration and Chi Pro erties

6 Recommendations

7252019 Chip Preparation and Chip Properties_no Recomendations

httpslidepdfcomreaderfullchip-preparation-and-chip-propertiesno-recomendations 1113

Chi Pre aration and Chi Pro erties

7 Appendices

Table 1 Chip basic density and raw material data from stands at soil type 91 93 and 8

983123983137983149983152983148983141 983107983151983140983141 983117983108983120 983116 983137983156983157 983113983108 983112983141983145983156983144 983156983151983156 983086 983149 983112983141983145983156983144 983139983151983149 983086 983149 983108983106983112 983139983149 983107 983144983145983152 983106 9830869831089830869830809831479831439830879831493) 983105983143983141 983123983152983141983139983145983141 983119983154983145983143983141983150

114-9352-13-91 17 3115 2638 2032 580 13 E dunnii111-9063-12-91 19 2014 1619 1708 645 12 E maidenii

116-113-12-91 18 2083 1627 1943 581 12 E bicostata

61-13-12-91 16 1968 1592 1832 534 12 E globulus Otros115-9033-18-91 24 2226 1740 1845 451 18 E grandis115-12-15-91 21 2281 1843 1872 431 15 E grandis

115-5008-16-91 22 2524 2089 1768 470 16 E grandis

111-9110-16-91 23 2179 1834 2498 633 16 E maidenii

111-9850-12-91 20 2260 1859 1823 602 12 E maidenii61-9145-12-91 15 2346 1872 2041 593 12 E globulus Otros

114-24-9-91 35 2778 2307 2030 537 9 E dunnii

115-9055-10-91 48 1971 1499 1637 428 10 E grandis

114-48-11-91 47 2844 2022 1773 597 11 E dunnii

114-9108-14-91 53 2879 2423 2397 568 14 E dunnii

61-9156-13-91 52 2125 1693 1890 594 13 E g lobulus Jeeralang

61-9102-10-91 46 2217 1843 2000 563 10 E globulus Jeeralang

111-9131-10-91 50 1673 1337 1627 609 10 E maideni i

116-9137-10-91 49 2110 1713 1933 573 10 E bicostata116-9322-14-91 54 2113 1713 2030 605 14 E bicostata

111-9118-15-91 55 2600 2177 2000 667 15 E maidenii

115-114-12-91 51 2060 1647 2007 461 12 E grandis

983123983137983149983152983148983141 983107983151983140983141 983117983108983120 983116 983137983156983157 983113983108 983112983141983145983156983144 983156983151983156 983086 983149 983112983141983145983156983144 983139983151983149 983086 983149 983108983106983112 983139983149 983107 983144983145983152 983106 9830869831089830869830809831479831439830879831493) 983105983143983141 983123983152983141983139983145983141 983119983154983145983143983141983150

116-9345-14-93 31 1980 1608 1780 595 14 E bicostata111-9427-12-93 29 1965 1571 1760 626 12 E maideni i

61-9141-10-93 25 2057 1652 1947 571 10 E globulus Otros111-9207-15-93 33 2382 2005 1925 620 15 E maideni i

61-68-10-93 26 2063 1680 1933 555 10 E globulus Jeeralang114-9344-13-93 28 2943 2473 2033 537 13 E dunnii

115-9035-10-93 27 2558 2179 2385 452 10 E grandis

115-9088-17-93 32 2472 2102 2100 466 16 E grandis111-9134-12-93 30 1867 1459 1840 597 12 E maideni i

111-13-18-92 34 2580 2175 2113 629 18 E maidenii

115-9150-12-93 60 2260 1863 2183 434 12 E grandis

61-33-12-93 58 2130 1630 1723 623 12 E globulus Jeeralang114-84-14-93 63 2705 2236 1927 529 14 E dunnii

61-52-13-93 62 2218 1592 1998 598 13 E globulus Jeeralang

116-9177-10-93 56 1734 1188 1547 613 10 E bicostata

116-55-12-93 61 2098 1659 1687 611 12 E bicostata111-9117-10-93 57 2264 1866 1890 633 10 E maidenii111-13-14-93 64 2451 2017 1860 639 14 E maidenii

115-24-18-93 65 2752 2364 2283 507 18 E grandis

983123983137983149983152983148983141 983107983151983140983141 983117983108983120 983116 983137983156983157 983113983108 983112983141983145983156983144 983156983151983156 983086 983149 983112983141983145983156983144 983139983151983149 983086 983149 983108983106983112 983139983149 983107 983144983145983152 983106 9830869831089830869830809831479831439830879831493) 983105983143983141 983123983152983141983139983145983141 983119983154983145983143983141983150

111-22-15-815 45A 2308 1973 2300 634 15 E maidenii111-30-15-815 45B 2377 1940 2095 636 15 E maidenii

115-29-16-815 14 2418 2038 2305 435 16 E grandis

115-27-16-815 13 2188 1813 2022 399 16 E grandis

115-18-12-87 8 1952 1598 1792 417 12 E grandis

115-21-12-87 9 2020 1582 1750 395 12 E grandis

61-13-15-815 12 2418 2048 2574 585 15 E globulus Otros114-0-12-88 7 2445 2022 2142 506 11 E dunnii

115-9007-11-802a 42 2310 1833 2200 433 11 E grandis

115-9068-15-815 44 2197 1767 2120 433 15 E grandis

111-0-13-815 10 2000 1668 2123 590 13 E maidenii

983123983137983149983152983148983145983150983143 983140983137983156983137

Average

Wood Mapping and Frame Setting

983123983137983149983152983148983145983150983143 983140983137983156983137

Average

Sample ID

Sample ID

Soil 91

Soil 93

Sample ID 983123983137983149983152983148983145983150983143 983140983137983156983137

Soil 8 Average

7252019 Chip Preparation and Chip Properties_no Recomendations

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Chi Pre aration and Chi Pro erties

Table 2 Chip basic density and raw material data from stands at soil type 2

983123983137983149983152983148983141 983107983151983140983141 983117983108983120 983116 983137983156983157 983113983108 983112983141983145983156983144 983156983151983156 983086 983149 983112983141983145983156983144 983139983151983149 983086 983149 983108983106983112 983139983149 983107 983144983145983152 983106 9830869831089830869830809831479831439830879831493) 983105983143983141 983123983152983141983139983145983141 983119983154983145983143983141983150

115-20-15-211 6 1717 1363 1647 396 15 E grandis

111-73-10-212 5 2336 1826 1888 581 10 E maidenii61-136-10-212 3 2447 2008 1855 569 10 E globulus Otros

61-1-10-212 2 1769 1311 1517 546 10 E globulus Otros

61-9306-8-212 1 1958 1485 1608 537 8 E globulus Otros

61-176-10-212 4 1925 1454 1617 554 10 E globulus Otros

61-T-14-210 40 2170 1740 2027 553 14 E globulus Otros

61-0-13-211b 36 2203 1820 2143 553 13 E globulus Otros

111-T247-13-212 39 2257 1763 1823 629 13 E maideni i

Age

Wood specie Average Stdev Min Max average

Eucalyptus grandis 438 2973 395 507 14Eucalyptus dunnii 551 3200 506 597 12

Eucalyptus globulus 569 2778 533 623 11

Eucalyptus maidenii 623 2224 581 667 13Eucalyptus bicostata 596 1643 573 613 12

Basic density chips

Sample ID 983123983137983149983152983148983145983150983143 983140983137983156983137

Soil 2 Average

Wood Mapping and Frame Setting

7252019 Chip Preparation and Chip Properties_no Recomendations

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Chi Pre aration and Chi Pro erties

Distribution

ArchivingLibrary Karlstad Research Centre

7252019 Chip Preparation and Chip Properties_no Recomendations

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Chi Pre aration and Chi Pro erties

7 Appendices

Table 1 Chip basic density and raw material data from stands at soil type 91 93 and 8

983123983137983149983152983148983141 983107983151983140983141 983117983108983120 983116 983137983156983157 983113983108 983112983141983145983156983144 983156983151983156 983086 983149 983112983141983145983156983144 983139983151983149 983086 983149 983108983106983112 983139983149 983107 983144983145983152 983106 9830869831089830869830809831479831439830879831493) 983105983143983141 983123983152983141983139983145983141 983119983154983145983143983141983150

114-9352-13-91 17 3115 2638 2032 580 13 E dunnii111-9063-12-91 19 2014 1619 1708 645 12 E maidenii

116-113-12-91 18 2083 1627 1943 581 12 E bicostata

61-13-12-91 16 1968 1592 1832 534 12 E globulus Otros115-9033-18-91 24 2226 1740 1845 451 18 E grandis115-12-15-91 21 2281 1843 1872 431 15 E grandis

115-5008-16-91 22 2524 2089 1768 470 16 E grandis

111-9110-16-91 23 2179 1834 2498 633 16 E maidenii

111-9850-12-91 20 2260 1859 1823 602 12 E maidenii61-9145-12-91 15 2346 1872 2041 593 12 E globulus Otros

114-24-9-91 35 2778 2307 2030 537 9 E dunnii

115-9055-10-91 48 1971 1499 1637 428 10 E grandis

114-48-11-91 47 2844 2022 1773 597 11 E dunnii

114-9108-14-91 53 2879 2423 2397 568 14 E dunnii

61-9156-13-91 52 2125 1693 1890 594 13 E g lobulus Jeeralang

61-9102-10-91 46 2217 1843 2000 563 10 E globulus Jeeralang

111-9131-10-91 50 1673 1337 1627 609 10 E maideni i

116-9137-10-91 49 2110 1713 1933 573 10 E bicostata116-9322-14-91 54 2113 1713 2030 605 14 E bicostata

111-9118-15-91 55 2600 2177 2000 667 15 E maidenii

115-114-12-91 51 2060 1647 2007 461 12 E grandis

983123983137983149983152983148983141 983107983151983140983141 983117983108983120 983116 983137983156983157 983113983108 983112983141983145983156983144 983156983151983156 983086 983149 983112983141983145983156983144 983139983151983149 983086 983149 983108983106983112 983139983149 983107 983144983145983152 983106 9830869831089830869830809831479831439830879831493) 983105983143983141 983123983152983141983139983145983141 983119983154983145983143983141983150

116-9345-14-93 31 1980 1608 1780 595 14 E bicostata111-9427-12-93 29 1965 1571 1760 626 12 E maideni i

61-9141-10-93 25 2057 1652 1947 571 10 E globulus Otros111-9207-15-93 33 2382 2005 1925 620 15 E maideni i

61-68-10-93 26 2063 1680 1933 555 10 E globulus Jeeralang114-9344-13-93 28 2943 2473 2033 537 13 E dunnii

115-9035-10-93 27 2558 2179 2385 452 10 E grandis

115-9088-17-93 32 2472 2102 2100 466 16 E grandis111-9134-12-93 30 1867 1459 1840 597 12 E maideni i

111-13-18-92 34 2580 2175 2113 629 18 E maidenii

115-9150-12-93 60 2260 1863 2183 434 12 E grandis

61-33-12-93 58 2130 1630 1723 623 12 E globulus Jeeralang114-84-14-93 63 2705 2236 1927 529 14 E dunnii

61-52-13-93 62 2218 1592 1998 598 13 E globulus Jeeralang

116-9177-10-93 56 1734 1188 1547 613 10 E bicostata

116-55-12-93 61 2098 1659 1687 611 12 E bicostata111-9117-10-93 57 2264 1866 1890 633 10 E maidenii111-13-14-93 64 2451 2017 1860 639 14 E maidenii

115-24-18-93 65 2752 2364 2283 507 18 E grandis

983123983137983149983152983148983141 983107983151983140983141 983117983108983120 983116 983137983156983157 983113983108 983112983141983145983156983144 983156983151983156 983086 983149 983112983141983145983156983144 983139983151983149 983086 983149 983108983106983112 983139983149 983107 983144983145983152 983106 9830869831089830869830809831479831439830879831493) 983105983143983141 983123983152983141983139983145983141 983119983154983145983143983141983150

111-22-15-815 45A 2308 1973 2300 634 15 E maidenii111-30-15-815 45B 2377 1940 2095 636 15 E maidenii

115-29-16-815 14 2418 2038 2305 435 16 E grandis

115-27-16-815 13 2188 1813 2022 399 16 E grandis

115-18-12-87 8 1952 1598 1792 417 12 E grandis

115-21-12-87 9 2020 1582 1750 395 12 E grandis

61-13-15-815 12 2418 2048 2574 585 15 E globulus Otros114-0-12-88 7 2445 2022 2142 506 11 E dunnii

115-9007-11-802a 42 2310 1833 2200 433 11 E grandis

115-9068-15-815 44 2197 1767 2120 433 15 E grandis

111-0-13-815 10 2000 1668 2123 590 13 E maidenii

983123983137983149983152983148983145983150983143 983140983137983156983137

Average

Wood Mapping and Frame Setting

983123983137983149983152983148983145983150983143 983140983137983156983137

Average

Sample ID

Sample ID

Soil 91

Soil 93

Sample ID 983123983137983149983152983148983145983150983143 983140983137983156983137

Soil 8 Average

7252019 Chip Preparation and Chip Properties_no Recomendations

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Chi Pre aration and Chi Pro erties

Table 2 Chip basic density and raw material data from stands at soil type 2

983123983137983149983152983148983141 983107983151983140983141 983117983108983120 983116 983137983156983157 983113983108 983112983141983145983156983144 983156983151983156 983086 983149 983112983141983145983156983144 983139983151983149 983086 983149 983108983106983112 983139983149 983107 983144983145983152 983106 9830869831089830869830809831479831439830879831493) 983105983143983141 983123983152983141983139983145983141 983119983154983145983143983141983150

115-20-15-211 6 1717 1363 1647 396 15 E grandis

111-73-10-212 5 2336 1826 1888 581 10 E maidenii61-136-10-212 3 2447 2008 1855 569 10 E globulus Otros

61-1-10-212 2 1769 1311 1517 546 10 E globulus Otros

61-9306-8-212 1 1958 1485 1608 537 8 E globulus Otros

61-176-10-212 4 1925 1454 1617 554 10 E globulus Otros

61-T-14-210 40 2170 1740 2027 553 14 E globulus Otros

61-0-13-211b 36 2203 1820 2143 553 13 E globulus Otros

111-T247-13-212 39 2257 1763 1823 629 13 E maideni i

Age

Wood specie Average Stdev Min Max average

Eucalyptus grandis 438 2973 395 507 14Eucalyptus dunnii 551 3200 506 597 12

Eucalyptus globulus 569 2778 533 623 11

Eucalyptus maidenii 623 2224 581 667 13Eucalyptus bicostata 596 1643 573 613 12

Basic density chips

Sample ID 983123983137983149983152983148983145983150983143 983140983137983156983137

Soil 2 Average

Wood Mapping and Frame Setting

7252019 Chip Preparation and Chip Properties_no Recomendations

httpslidepdfcomreaderfullchip-preparation-and-chip-propertiesno-recomendations 1313

Chi Pre aration and Chi Pro erties

Distribution

ArchivingLibrary Karlstad Research Centre

7252019 Chip Preparation and Chip Properties_no Recomendations

httpslidepdfcomreaderfullchip-preparation-and-chip-propertiesno-recomendations 1213

Chi Pre aration and Chi Pro erties

Table 2 Chip basic density and raw material data from stands at soil type 2

983123983137983149983152983148983141 983107983151983140983141 983117983108983120 983116 983137983156983157 983113983108 983112983141983145983156983144 983156983151983156 983086 983149 983112983141983145983156983144 983139983151983149 983086 983149 983108983106983112 983139983149 983107 983144983145983152 983106 9830869831089830869830809831479831439830879831493) 983105983143983141 983123983152983141983139983145983141 983119983154983145983143983141983150

115-20-15-211 6 1717 1363 1647 396 15 E grandis

111-73-10-212 5 2336 1826 1888 581 10 E maidenii61-136-10-212 3 2447 2008 1855 569 10 E globulus Otros

61-1-10-212 2 1769 1311 1517 546 10 E globulus Otros

61-9306-8-212 1 1958 1485 1608 537 8 E globulus Otros

61-176-10-212 4 1925 1454 1617 554 10 E globulus Otros

61-T-14-210 40 2170 1740 2027 553 14 E globulus Otros

61-0-13-211b 36 2203 1820 2143 553 13 E globulus Otros

111-T247-13-212 39 2257 1763 1823 629 13 E maideni i

Age

Wood specie Average Stdev Min Max average

Eucalyptus grandis 438 2973 395 507 14Eucalyptus dunnii 551 3200 506 597 12

Eucalyptus globulus 569 2778 533 623 11

Eucalyptus maidenii 623 2224 581 667 13Eucalyptus bicostata 596 1643 573 613 12

Basic density chips

Sample ID 983123983137983149983152983148983145983150983143 983140983137983156983137

Soil 2 Average

Wood Mapping and Frame Setting

7252019 Chip Preparation and Chip Properties_no Recomendations

httpslidepdfcomreaderfullchip-preparation-and-chip-propertiesno-recomendations 1313

Chi Pre aration and Chi Pro erties

Distribution

ArchivingLibrary Karlstad Research Centre

7252019 Chip Preparation and Chip Properties_no Recomendations

httpslidepdfcomreaderfullchip-preparation-and-chip-propertiesno-recomendations 1313

Chi Pre aration and Chi Pro erties

Distribution

ArchivingLibrary Karlstad Research Centre