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LBK

 

 

 

Features World’s lightest, low thermal conductivity, low heat storage
Kinds LBK-20, LBK-23, LBK-26, LBK-28, LBK-30, and LBK 3000
Applications

For the hot surface and back-up lining of following industrial furnaces.
1. Annealing furnaces
2. Galvanizing furnaces
3. Heat-treating furnaces
4. Air-heating furnaces
5. Naphtha cracking furnaces

Standard

Item LBK-20 LBK-23 LBK-26 LBK-28  LBK-30  LBK-3000
Temperature 1200 1300 1400  1500 1550  1600
Bulk Density 0.50≧ 0.55≧ 0.75≧  0.80≧ 0.90≧  0.90≧

Thermal Conductivity at 350±10℃

0.17≧ 0.19≧ 0.24≧ 0.27≧  0.30≧  0.37≧
Cold Crushing Strength (MPa) 0.59≧ 0.78≧ 0.98≧ 0.98≧  1.5≦  1.5≦
Modulus of Rupture 0.49≧ 0.69≧ 0.78≧ 0.98≧  1.5≦  1.3≦
Content rate of Fe2O3 (%) 1.5≧ 1.5≧ 1.5≧  1.0≧  1.0≧  1.0≧

Note: Above standard is subject to change without notice.

Test Results on Samples

Item LBK-20 LBK-23 LBK-26 LBK-28 LBK-30 LBK-3000
Reheat Shrinkage 0.03 (1200) 0.19 (1300) 0.25 (1400) 0.31(1500) 0.28 (1550) 0.26 (1600)
Bulk Density 0.48 0.52 0.59 0.70 0.75 0.78

Thermal Conductivity at 350±10℃

0.16 0.17 0.23 0.25 0.28 0.32
Cold Crushing Strength (MPa) 1.4 2.0 2.9 3.2 3.5 3.2
Modulus of Rupture 1.0 1.2 1.4 1.7 1.9 1.7

Chemical Composition

Al2O3 45 45 55 72 69 76
SiO2 49 49 42 26 30 24
Fe2O3 1.4 1.4 0.7 0.6 0.5 0.3

 

Note: Above test results are average results of tests conducted under standard procedures and

subject to variation. Results should not be used for specification purposes.

 


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