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SU RYUNG

ESCOM(Energy Saving Coating Material)

[Awarded the technology innovation prize at New Tech Korea 2002]

Su Ryung Ceramics Co.,Ltd.

INDEX

1. Heat Radiation?2. Specification3. Characteristic4. Industries being Applied

Heat Radiation ?

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Heat Radiation?

■When all objects receive energy from the outside, Transmission, Reflection & Absorption happen all the time and absorbed energy is emitted to the outside by the way of Radiation.

■The ideal Black body emits all its absorbed energy to the outside and its Emissivity is 1.

■Object and outer space exchange the energy by the way of radiation due to the temperature difference so the heat transfer is happened. For example, the temperature of the object is higher than that of the outside, Net Heat Transfer is happened from the object to the outside.

CoatingMaterial

Outer Energy

Transmission(T)

Refraction(R)

Absorption

RadiationRefractory

Outside(TSur)Radiation

Object(TS) Radiation

q rad,net

(Net Heat Transfer)

Heat Radiation Energy

Radiant Energy(q) = A T4

: emissivity (depended on each own material’s characteristic) : Stefan-Boltzmann ConstantA : Surface AreaT : Temperature(K)

SU RYUNG

Emission

ESCOM Specification

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General properties

■ The Brand Name : ESCOM (Energy Saving Coating Material)■ Type : The Unique Fluid ■ Color : Dark Brown■ Composition Filler + Binder + Additive + Water

Heat Radiation CharacteristicsMechanical & Adhesive Characteristics

Dispersion, Unique Mixing, Prevention of Precipitation

■ Photo

Physical/Chemical Property

■ Physical Property - 50~60% Solid - Viscosity : 100~200 cps - Density : 1.7~2.0 - Heat Resistance Temp : 1700℃

구 분 Main filler Al2O3 Fe2O3 SiO2 Others

Wt(%) 30% min. 7% min.

10% min.

3% min. 30% min.

■ Chemical Property of Filler

ESCOM -100

■ Size Distribution

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Characteristics of ESCOM

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Technical properties

■ High Emissivity■ Superior Durability (I Year using for the Reheating Furnace)■ High Heat Resistance Temp. : 1700℃■ High Combining Strength with the Firebrick■ The Unique Fluid (Easy Using & Storage)■ Easy Coating (Spray, Roller, Brush)■ No Pollution Material■ Natural Dry (2~3 Hours)

The Test Result of Durability

ESCOM

50㎛

- 20 times of 3 Hrs Sintering (at 1300 ℃) & Room Temperature Cooling

- No Crack

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Heat Rradiation Rate Measure Result of ESCOM

- Heat Radiation rate of ESCOM : 0.899

(Black body : 1.0)

100

80

60

40

20

02.5 10 20 25

%T

Wavelength (㎛ )

ESCOM (0.899)

(Measure Lab : Korea Energy Technology Laboratory)

※ Infrared Rays Optical Spectrometer

Black Body sample

Output

Temperaturecontroller

Sample Light

thermometerr

StandardLight

Spectroscope Electricsource

Source of Light

Thermocouple

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Characteristics of ESCOM

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Pilot Plant Model Test Results

■ the contents of estimate - An Efficiency Test of ESCOM - Effect of each Temp. section - Quantitative analysis of Energy Saving

■ Tset Equipment

■ Test Result

900~1000℃

1100℃

1200℃

WithoutCoating

Conventional(Cr2O3 Based)

ESCOM

FHE Index (%) (%) (%)

100 104.4 ▲4.4 102.2 ▲2.2 114.9 ▲9.4

ESCOM makes FHE increase by 10%*FHE ; Furnace Heat Efficiency

100 101.8 ▲1.8 94.8 ▼5.2 114.9 ▲14.9

100 110.2 ▲10.2 101.2 ▲1.2 113.3 ▲13.3

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Conventional(TiO2 Based)

FHE Index FHE IndexFHE Index

Characteristics of ESCOM

*Customers’ Applying Results are reported that Energy Consumption Units are decreased by 3% to 37%.

Industries being Applied

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Industries being Applied

Refractory IndustryCement Industry

Refractory IndustryCement Industry

Combustion & DryingFurnace

Combustion & DryingFurnace

Petroleum & Chemical Industry

Petroleum & Chemical Industry

Steel Industry(Reheating Furnace

Steel Industry(Reheating Furnace

How to Use ESCOM

■ Pre-Treatment - The removal of dust etc. on the surface being coated by air spray■ Coating - Air Spray Coating under room temperature - Coating Thickness : 200 ㎛ ※ Unit Consumption Amount : 2.0 kg/㎡■ Drying 2~3 hours at room temperature■ Photo of Coating Work

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Industries being Applied

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Supply List

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■ POSCO - Stainless Steel Plant ;#1APL,#2APL,#1Slab RF,#2Slab RF - HR Plant ;#1RF,#2RF,#3RF,#4RF,#5RF,#6RF, #1~#24 Heat Reserving Furnace - Wire Rod Plant ; #3RF - Heavy Plate Plant ; #1RF,#2RF,#3RF - Mini Mill ; #1 Coil Box - Steelmaking Plant ; #1~5 L/D Dry Burner Cover,Lance Dry Furnace,L/D Cover

■ Other Steelmakers - Hanbo Steel ; #1RF - Kia Special Steel ; #1 Heat Treatment Furnace,#1RF,#2RF - Changwon Special Steel ; #1 Heat Treatment Furnace - Dongbang Metal ; #1 Heat Treatment Furnace - Seah Special Steel ; #1 Boiler - Dongil Steel ; #1RF - INI Steel ; All Heat treatment Furnaces and RFs - Dongkook Steel ; #1RF

■ Other Industries - Samjung P&A ; #1,2,3 Al Smelter - Sillip Industry; #1 Combustion Furnace - Samwhan C1 ; #1 Brick Drying Furnace *Petroleum,Oil and Chemistry Industries applied from June 2003

■ Foreign Agent of KST - Europe (England,France,Italy) - Asia (East Asia,Japan,China,South Asia) *Export to the world started from the 2003.

(SLAB Heating Furnace)

(BLOOM Heating Furnace)

(BLOOM Heating Furnace)

(SLAB Warm Furnace)

(Gilding Plant)

(Naphtha Cracking Plant)(Heating Furnace)

(COIL Heat Treatment Furnace)