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Alumina brick

Feature:

Alumina brick, alumina insulating fire brick mainly used for blast furnace, hot blast stove, electric furnace roof, reverberatory furnace, glass furnace, cement kiln, lining of rotary furnace.

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Description:
High alumina insulating fire brick is a kind of insulation material adopting organic matter as ignition loss substance in order to increase the porosity of refractory, which has such advantages as high porosity, small volume density, good insulation effect, high mechanical intensity, small thermal conductivity and long service life.

For various industrial kilns & furnaces, It is a kind of essential refractory for energy saving and temperature preservation. This series of High Alumina fire resistant brick are made of selected high alumina bauxite, kaolin clay, hollow microsphere as the main material. Be shaping at high pressure and sintering at high temperature. 

Application:
It mainly used for blast furnace, hot blast stove, electric furnace roof, reverberatory furnace, glass furnace, cement kiln, lining of rotary furnace. In addition, high alumina bricks are widely used as open hearth regenerative checker brick, plug head of pouring system, nozzle brick, etc.

Technical Data

Item Specification
JK-80 JK-75 JK-65 JK-55 JK-48
Al2O3 80 75 65 55 48
Apparent density 22 23 23 22 22
Cold crushing strength 55 50 45 40 35
RUL 1530 1520 1500 1450 1420
PLC 1500.C*2h 0.1~-0.4  
1450.C*2h   0.1~-0.4

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