bench test

7/29/2019 Bench Test

1/20

MRI)UYrr,.s...*i...,c~l. A~~~~~, f.3 :nw~.-LYU*...~,..~.--~I, Bench Scale Jig-Column Teston Network 1 Copper Ore

A Report to: . >.~;*)~.. 1~~555 West HastingStreetSuite700VancouverB.C.V6B 4N5Attention: Mr. F elix Reyes

Submittedby: Robertde LaatTechnologist,Separation rocessesRecyclingTechnoldgies

ReportNo.: 97-1-20-01-03-11008-003


2/20

Bench ScaleJig-Column Test on Network 1 Copper Orefor Network 1, Mine ral Divis ion Repo~#w-I-ZCOl.O3-lloos.003

TABLE OF CONTENTS

1.2.3.4.5.

6.I.

PageINTRODUCIION.. ...................................................................................... 1OBJECTIVES ............................................................................................. 1DESCRIPTION OF THE TE ST APPA RA TUS ......................................... 1SAMPLE PREPARATION ........................................................................ 2OBSERVATIONSAND RESULTS .......................................................... 25.1 BenchSca le est #l ......................................................................... 25.2 BenchScale est i .............................................................. .:. ....... 35.3 Acid Column LeachTest #3 ............................................................ 35.4 Acid Column LeachTest #4 ............................................................ 4CObKLUSIONS .......................................................................................... 4RECOMMENDATIONS ............................................................................. 5


3/20

I11I;1I1I01I

ORTEXHBench ScaleJig-Column Test on Network 1 Copper Ore Page1of 18for Network 1, Mine ral Divis ion Rspo~#97-I-ZCOI-03-11008-003

1.

2.

3.

INTRODUCTIONA copperore samplewas obtained rom Network 1 Copperof Vancouver,BritishColumbia for copperextraction n the Mackie Vat Leachbenchscale ig-columntest apparatus.Two boxesof 4 ore weighing20 kg and25 kg respectivelywerecrushed o 100% passing0.263 inchesusing the laboratoryscale aws and rollscrusher. Subsequently, lab extraction tests and 2 full jig-column tests wereundertaken t ORTRCH during the period from July 30 - September 0, 1997. Atotal recovered mshedore weight of 65.65kg was riffled down to 10.0kg, 10.15kg, 12.60kg and 32.20kg batches.The sm aller12.60kg riffled batchwas furtherriffled down to -250 kg for s izecharacterization ndcopperheadanalysis.

OBJECTIVESThe principal objectiveof testwork undertaken n the Network 1 copperore wasto determine opper each ate and otal copperextractionattainable n the MackieVat LeachingJig (MVLJ) by simulation eaching n the ig-column apparatus.

DESCRIPTION OF THE TEST APPARATUS


4/20

ORTECHBenchScaleJig-Column Test on Network 1 Copper Ore Page2of18for Network 1, Mine ral Divis ion Rcporl#97-1-20-01-03-110~3

IIII

II

4.Two boxes of approxi 66 kg of 4 rock was receivedand logged nto theORTECH samp le inve (Sample ID #97-T13-AO039). Sing le stage awcrushing ollowed by 5 st rolls cmshing reduced he entire samp le o 100%minus 0.263. Four larg us splits of 65.65 kg of ore was achieveding would be undertaken n 10.0 kg or 10.15Id in reserve. Additionally, a tiffed headiron assaying.A second iffled headsample10, 16,20,28,35,48,65, 100, 150 and 200Tyler meshscreens.Following column acid-l ing, the recovered ailing material was displacedwashed n. the Buchn el with 10 gpL HsSO4 ollowed by a displacementdistilled water wash. ple was then oven dried. A representativeailingsamplewas obtained hrou riffling and submitted or iron andcopperassaying.1 5. OBSERVATIONS RESULTSI 5.1 Bench ScaleTestPrior to acid leaching s 0.263" feed sample, a screen analysis was


5/20

ORTRCHBench ScaleJig-Column Test on Network 1 Copper Ore Page3of18for Network 1, Mine ral Div ision Repo~x97.I-ZCOI-03-11~8-003

5.2 Bench ScaleTest #2Due to poor copper dissolution ates in Test #l, a secondbench scale test wasundertaken n a samplecrusheddown from minus I,& to 100%minus 10 mesh.From the original 12.60kg minus ! split, the entire samp lewas further ro llscrushed o 100%minus 10 mesh. Table4 shows he size characterization f theNetwork 1 copperore passing10mesh.For Test #2,232.1g of feed materialwas combinedwith 550 ml of distilled waterand concentratedHsSO4at pH = 1.5-2.0. Leachingcontinued or 167.5hourswith regularcoppersampling.Refer to Table5 for datacollectedduring Test#2.After the initial 167.5hour leachingperiod; the minus 10 mesh esiduewas acidandwater washed. The combined iltrate was assayedor copperand total copperextraction was calculated. The wet residuewas continued eachingwith freshpH = 1.5-2.0 HsSO4 eachant. An additional 115 hours of copper dissolutioncontinuedwith regularcoppersolutionsampling.Solution-basedopperextraction esultsareshown n Table6.Jn comparisonwith Test #l extractiondata, minus 10 mesh.feedmaterial eachesthe soluble copper dissolution limit in 100.5 hours versus 217.5 hours. An


6/20

ORTRCHBench ScabJig-Column Tedt on Network 1 Copper Orefor Netyqrk 1, Mineral Divi$on Page4of18Rspo~~7-1-2C01-03-11~8-W3

Leachingconditions or the 48 hoursperiodwere as ollows:. pH of lixiviant = 1.5-2.0 with HrSO4). Temperature = ambient 2 1 C). Cycle Times = 3-5 minutes. PulseTimes = 5-10 seconds. SamplingTimes = 1,3,19,27,43 and48 hoursRefer to Table7 for datacollectedduringcolumn acid eachTest #3.Extraction.data hown in Table8 showsonly 20% copperextraction n 48 hours.5.4 Add Column teach Test #4Becauseof disappointingcopperextraction results n cohnnn Test #3, a 10 kgrepresentative plit of iminus , feed material was further size reduced hroughcrushing and grinding to 100% minus 65 mesh. Refer to Table 9 for the sizecharacterization f the minus 65 mesh eedmaterial or Test#M.Test #4 was conducteddentically o Test#3 except or the following;. 9.25 kg of feedimaterial izedat 100%passing 5 mesh 3.28 wt. % copper)


7/20

ORTECHBench ScaleJig-Column Test on Network 1 Copper Ore Page5of18for Network 1, Mineral Division Rcport#97-l-2COI-03-11008-003

6. CONCLUSIONS. stir-tank test results ndica te

minusW material eaches opper o its extractable imit (-38%) in217.5hoursminus 10 m esh material leachescopper to the extractable imit(-38%) in 100.5hours. acidcolumn e ach ests ndicate

50% of extractablecopper is leached n 48 hours on minus 10meshmaterial65% of extractablecopper is leached n 48 hours on minus 65meshmaterial

7. RECOMMENDATIONS. For the Network 1 copperore provided, he acid digestable opper (CuO,CusO) shouldbe accuratelydetermined. Additionally, x-ray diffractionshouldbe used o establish oppersulphide oncentrationsn the ore.


8/20

ORTECHBench ScaleJig-Cok~mn Test on Network 1 Copper Ore Pagedoffor Network 1, Mineral Divis ion RaportxW-I-2~01.03-11~8.~3

. Additionally, estwork could beconducted s ollows:multi-element chemical analysis of leach pregnant solution todetermineadditionalelementsacid solubleduring leaching. Thiscould be extended o x-ray diffraction testing of leach feed andtailings to determine minerals present before and after aciddigestion.varying acid addition during the leach to maximize copperdissolution and limit iron, gangue and other minerals fromsolubilization.use of a surfactant o enhance oth copper each ates and overallcopperextraction.

. To maximize copper sulphidemineral recovery, Network 1 copper oreshould be ground to minus 200 mesh. Then, bench scale flotationtestwork would be undertaken or sulphidemineral collection. Flotationtailings would then be acid eachedn the Mackie Jig-columnapparatus.

RobertdeLaat


9/20

ORTEXHBench ScaleJig-Column Test on Network 1 Copper Ore Page7of 18for Network 1, Mineral Divis ion Reaort#w-1-20-01-03-11008-003

Table 1SizeCharacterization of CrushedNetwork 1 Ore - Passing .263

Mesh Screen Opening CumulativeSize (inches) (mm or ~1 wt 9%Passing3 0.263 6.680 99.96.............................................................................. .. .......... - .................................................................. .............................. ...................4 0.185 4.699 75.61.......................................- ................................................................................................................................. ..................................................6 0.132 3.350 52.94..............................................................................................................................................................................................................................8 0.093 2.362 38.66.............................................................................................................................................................- .............................................................10 0.0661 1.700 27.92................................................................................ ......................................................................................................................................16 0.0394 1.000 18.05............................................................................................... .............................................- .................... .......................- .......................20 0.033 1 850 15.74

............................................................................................................................................................................................................................28 0.0234 600 12.05............................................................................................................ .. ................................. ...........................................................................35 0.0164 417 9.45..............................................................................................................................................................................................................................


10/20

ORTJXHBench ScaleJig-Column Test on Network 1 Copper Ore Page 8 of 18for Network 1, Miie ral Divis ion Repi #9?-1-20-01-03-11008-003

Table 2Network 1 - 3.80 Copper Test #l211.80g Cu @ 3.28 wt 96Cu + 6.94704 Copper Total, 550 mL D. Hz0

I I Test I TestTime I 1 gconc. 1 COttUlWltS ITime (hours) PH HziO, Added How Sample Taken11:3oAM 0 9.00 to start/l.60 3.80. . . . . . . . . ................. ........... ..............................11:35 AM M 1.30 3.70. . . . . . . . . . .................................:..............................Il.1.e A. A 1.20,..... . . . . . . . . . . . . I.. ............................,........ .:.x:-..:..:::. . . y . . . . . A?!& ~ . .: . . T... . .._................1.40 2hr.,.-.. . il/ . ........ . . ;;i;i . . ;i;... .

,..... .. . 205 . . . . . !.:a!? . . . 1. . . . . . m.hr. .1.80 -_ _-,... . . . . . . . . . . . . . . .2.W1.45 1.90 --,t..-......I 28.5 . . . i:j~ ~~.. . . . . ~~,.~~~~. . . . . .. . 4% . . .stop test for week-end


11/20

ORTECHBench ScaleJig-Column Test on Network 1 Copper Ore Pap9 of 18for Network 1, Mineral Divis ion Rcport~7.1-2~01-03-11~8-003

Table 2 (co&d.)Network 1 - 3.80 Copper Test #l211.80g cu @loo wt % P assingW

6.94704g Copper Head Total, 550 II& D. ~20 to Start

Date Test Test TiicTime OloW PHg cont. C0ttUlEntSHzSO, Added Hour Sample Taken

Aug. 19/97 1o:ooAM 215.5 3.20/1.20 12.90 TEST RES TAR TED. .. .. . . . ... . . . ... . . . . . . . . . ... . .......................................12:OOPM 2a17.5 1.60 -- 217.5 hrAug. 20/97 8:3OAM 1 22.5I238 j 1.20 __ 238 h. . . .. .. . . . . . .......................4:00 PBAug. 21l97 8.30 AM. . . . . 46.5/262 J 1.20. . . 1 :.I .4:OOPM 54/26!Aug. 22197 8:30 AM 70.5/286 1 1.60 I __ I 28Aug. 25197 8:30 AM 142X Aun. 26/97 8:30 AM 164.51

L . . .,d 1 3o1245.5 I 1.20 I _- I 245.5 hr.262 hr.,... . . . . . . ..,9.5 I 1.50 I __ 269.5 hr.6hr.358 1 2.30 I 3.80 I 358 hr.380 1.60 __ 380 hr.TESTRND


12/20

II1IIIIIIII

ORTECHBench ScaleJig-Column Test on Network 1 Copper Ore Page10of 18for Network 1, Mine ral D ivision Rcporr#97-1.Z~OI-03.11008.OoJ

Table 3Solution-BasedCopper ExtractionTest #l Stir-Tank Testwork

~~ . 27go , 22.! ::::Test Time Solution SolutionCopperAssay SolutionBased Cumulative)I) (mg/L) CopperExtraction %)

I do 1470 11.64. . . . . . . . . . . . . . . . . . .. . ..... ..... ... . ,1690 13.3,............ . . . . . . ..,--.-_........................................................................-. ......................................................... ........................................................................................28.5 1.50 2790 22.09.............................................................................................................................................................................................................................45 2.20 3100 24.54............................................................................................................................-..............................................................................................465...................... 150 3140 24.86................................ .................................................................-........ .....................................................................................53.5 1.40 3210 25.41..........................................................................................................................................................................................................................69.5 2.00 3300 26 13..............................................................................................................................................................................................................................77 1.60 3070 24.31.............................................................................................................................................................................................................................93.5 1.80 3160 25.02............................................................................................................................................................................................................................101 160................ 3150i.. 24 94................................. ........................................................................................................................................................................117 2.00 3300 26.13............................................................................................................................................................................................................................................!??I.............................:.??.....................................2*. .............................................................6.92 ....................................149.5 1.90 3700 29.29


13/20

ORTJXHBench ScaleJig-Column Test on Network 1 Copper Ore Page11of18for Network 1, Mineral Divis ion Reporr#w-1-2C01-03-11~8-~3

.

Table 4SizeCharacterization of CrushedNetwork 1 Ore - Passing10 Mesh

Mesh ScreenOpening CumulativeSize (inches) (mm or w) wt % Passing10 0.0661 1.700 99.91...................................................................................................................................................................................................................16 0.0394 1.000 64.2s...........................................................................................................................................................................................................................20 0.0331 850 54.40...........................................................................................................................................................................................................................28 0.0234 600 38.16...............................................................................................................- ........................................................................................................3s 0.0164 417 28.15..................................................................................................................................................................- .................................................48 0.0116 295 20.28.....................................................................................................................................................................................................................65 0.0082 208 15.04.................................................................................................................................................................. ...................................................100 0.0059 150 12.12..........................................................................................................................................................................................................................150 0.0041 106 8.34..........................................................................................................................................................................................................................

,...

,...,...,...


14/20

II1IIIIIIII

ORTEXHBench ScaleJig-Column Test on Network 1 Copper Ore Page12of18for Network 1, Mineral Division Repo~xW-I-2~1.03.lloos-wJ

Table 5Network 1380 Copper + Stir-Tank Test #2232.1g Cu Ore @ 3.28 wt % Copper + 7.61288g Cu Total

580 ml Distikd Water + Sample 100% Minus 10 Mesh

1 4:3opIAug. 6/!97 8:30 Al. . .A_M mr

. .


15/20

I ORTECHI Bench ScaleJig-Column Test on Network 1 Copper Ore Page13of18for Network 1, Mine ral Divis ion Rc~o~#97-1JC01-03-11~-~3I

Table 6I Solution-BasedCopper ExtractionTest #2 Stir-Tank Testwork + 100% Miius 10 Mesh FeedMaterialI TestTime Solution SolutionCopperAssay SolutionBased Cumulative)I

(hours) (pH) (mgiL) CopperExtraction %)1 1.40 2540 19.35......................................................................... .................................................................................................................................................185..................... 250............................. : 3460 26 36. ...................................................................................................................................................................

I26 1.40 3400 25 90.............................................................................................................................................................................................................................

..............44..?........... ........x!!?. ...................................?~ 0.. ..........................................................z.!!.. ...................................I

52 1.40 3660 27.88..........................................................................................................................................................................................................................................c!!. .... ......................:.?!?....................................!!E!!. ............................................................?2:68....................................80 150................................................... 4300 32 76...........- .... ..........t........-............................................................................................................................I

100.5 1.50 5220 39.77.................................. ...........................................- ......................................................................................................................................120.5 2.50 5450 41.52..........................-................................................................................................................................................................................................142 1.80 5010 38.17..............................................................................................................................................................................................................................I 167.5 2.10 5750 43.18Recovercopper rom primary andwash iltrateRe-start est with fresh pH = 1.50 o 2.00 HzS04 eachant 500 ml)


16/20

Bench Scale Jii-Column Test on Network 1 Coppe r Ore Page14of18for Network 1, Mineral Division Repo~~-1-2~01-03-11008003

Table 7

.Network 1380 Copper + Column Acid - Leaching Test #3950kg of 100% Minus 10 Mesh Material24L of Tap Water, Commence Test with 50 kgRonne I&SO,

. ...........................................:. ..........................................:. ..........................................

FinalWashedKhyTailing Weight= 8.75kg


17/20

Bench Scale Jig-Column Test on Network 1 Coppe r Orefor Network 1, Mineral Division Page15of18Repo~~7-1-2~01-03-11~~~3

Table 8Copper ExtractionColumn Acid-Leach ing Test #3

CopperExtraction W) CopperExtraction %)--______


18/20

IIII~1IIIIII

ORTJXHBench ScaleJig-Column Test on Network 1 Copper Ore Page 6of 18for Network 1, Mineral Divis ion Reporf#97-1-2~01-03-110o8-oo3

Table 9SizeCharacterization of Crushed/GroundNetwork 1 Ore - Passing65 Mesh

Mesh ScreenOpening CumulativeSize (inches) (mm or I.@ wt 9% assing48 0.0116 295 99.60................................................................................................................................................................................................................................65 0.0082 208 97.60.............................................................................................. ..............................................................................................................................loo 0.0059 150 82.40................................................................................................................................................................................................................................1.50 0.0041 106 57.80................................................................................................................................................................................................................................200 0.0029 75 45.50................................................................................................................................................................................................................................-200 -0.0029 -75 0.00


19/20

ORTECHBeach Scale Jig-Column Test on Network 1 Copper Ore Page17of18for Network 1, Mineral Division Rcporty97-1-20-01-03-11w&0

Table 10Network 1380 Copper + Column Acid-Leaching Test 849.25kg of 100% Minus 65 Me.41 Material18L of Tap Water, Commence Test with 58 kflonne I&SO4

Final Washed/DryTailingWeight = 8.40kg


20/20

ORTECHBench Scale Jig-Column Test on Network 1 Coppe r Orefor Network 1, Mineral Division Pcrge 8 of 18Report #97-1-20-01-03-11008-0

Table 11Copper ExtractionColumn Acid-Leaching Test #4

Minus 65 mesh feed material head analysis3.28 wt % Copper7.95 wt % Iron

bench test

Documents