How to improve the thermal shock resistance of high alumina bricks ? Using grade 1 bauxite clinker and fused white corundum powder as raw materials, adding an appropriate amount of expansion agent, forming and heat treatment at 800 ℃, high-alumina bricks with good thermal shock stability can be obtained Using grade 1 bauxite clinker and fused white corundum powder as raw materials, adding an appropriate amount of expansion agent, molding and heat treatment at 800 ℃, high-alumina bricks with good thermal shock stability can be obtained. in The chemical composition of grade 1 bauxite clinker is (%): Al2O3: 83.50, SiO2: 9.39, Fe2O3: 1.29, K2O+Na2O: 0.86 The Al2O3 content of fused white corundum powder is 95.36% Clay particle ratio: 15~35% of first-grade soil clinker <5mm, 20~40% of first-grade clinker fine powder <0.088mm, 5~10% of fused white corundum powder, andalusite and Sillimanite compound expansion agent 6~15%, chemical binder 6~10%. Mixing is carried out in ...