The best corundum content greater than 90% alumina brick, corundum refractory products based crystalline phase. High compressive strength at room temperature (up to 340MPa).
High load softening start temperature (greater than 1700 ℃). Good chemical stability, acid or alkaline slag, metal and glass liquid so have strong resistance. Thermal shock resistance related to its organizational structure, good corrosion resistance properties of dense products, but poor thermal shock resistance.
Divided into two sintered corundum bricks and brick fused corundum. Sintered bauxite and alumina respectively clinker sintered alumina and fused alumina as raw material or Al2O3/SiO2 high and fit, using a sintering process.
Can also be made of phosphoric acid or other adhesive corundum bricks do not burn. Mainly used outside the blast furnace and hot blast furnace, refining furnace steelmaking furnaces, water slide, glass melting furnaces and petrochemical and other industrial furnaces.
