Introduction of high-aluminum heat-insulating lightweight refractory bricks

High-aluminum heat-insulating light-weight refractory bricks are heat-insulating light-weight refractory bricks with bauxite as the main AL2O3 content of not less than 48%. The production process adopts the foam method or the burn-out addition method. High-aluminum heat-insulating lightweight refractory bricks can be used to build heat-insulating layers and parts that are not corroded and scoured by strong high-temperature molten materials. When in direct contact with the flame, the surface contact temperature of general high-aluminum heat-insulating refractory bricks shall not be higher than 1350℃. Mullite heat-insulating refractory bricks can directly contact the flame, and have the characteristics of high temperature resistance, high strength, and significant energy-saving effect. It is suitable for the lining of pyrolysis furnace, hot air furnace, ceramic roller kiln, electric porcelain drawer kiln and various resistance furnaces.