Refractory Bricks

Fire proofing brick technical data and usage

Feb 25,2022

Fire proofing brick technical data and usage

Fire proofing brick, usually called heat-insulating refractory bricks, are also called heat-insulating high-alumina bricks. The essential purpose of high-aluminaFire proofing brick is thermal insulation and thermal insulation. In normal use, it is not in direct contact with the furnace temperature.

Fire proofing brick

Fire proofing brick technical data:

High-aluminafire proofing bricks refer to heat-insulating refractory products with Al2O3 content of not less than 48% made of bauxite as the main raw material. High alumina heat insulating refractory bricks mainly use bauxite clinker, combined with clay as raw material, mixed with binder and sawdust, in order to improve product performance, add industrial alumina, corundum, sillimanite, kyanite, silica The fine powder can be made into products with a bulk density above 0.4g/cm3. The Al2O3 content and bulk density are different, and the maximum operating temperature is also different, usually 1250-1350°C, and some can reach 1550°C.

Fire proofing bricks usage

High-aluminafire proofing bricks can be used for building heat-insulating layers and the parts without strong high-temperature molten material erosion and scouring are in direct contact with the flame, the surface contact temperature of general high-alumina heat-insulating refractory bricks should not be higher than 1350℃. Mullite heat-insulating refractory bricks can directly contact the fire filling, and have high temperature resistance and high strength. The energy-saving effect is remarkable and so on. It is suitable for the lining of pyrolysis furnace, hot blast furnace, ceramic roller kiln, electric porcelain drawer kiln and various resistance furnaces.


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