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High Alumina Bricks for General Use

Mark & model:LZ-80、LZ-75、LZ-65、LZ-55、LZ-48

HIGH ALUMINA BRICKS FOR GENERAL USE
Goods Brand LZ-80 LZ-75 LZ-65 LZ-55 LZ-48
Al2O3(%) min 80 75 65 55 48
Refractriness under load 0.2 Mpa ( ℃) min 1530 1520 1500 1450 1420
Apparent porosity (%) max 22 23 23 22 22
Cold Crushing strength (MPa)min 55 50 45 40 35
Shrinkage after reheating (%) max 1500℃x2h +0.1~-0.4 +0.1~-0.4 +0.1~-0.4 +0.1~-0.4 ***
1450℃x2h *** *** *** *** +0.1~-0.4
 

Alumina-silicate products containing more than 48% of Al2O3 and in a certain shape, is called high alumina brick, widely used in blast furnace, thermal storage chamber, soaking pit, annealing furnace, ladle, etc. High alumina brick containing more than 80% or higher are used in electric arc furnace roof and the special zone of other high temperature furnaces.

If you are interested in our products,pls do feel free to contact me with below informations:

Hongzhao
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