1,mullite bricks 2,good corrosion resistances to acids and alkali. 3,Widely used as linings in decomposing furnaces for petr mullite bricksCharacteristics: 1,The sintered corundum products were produced by sintering of high purity fused corundum, synthetic mullite and chromium oxide.2, They have high bulk density,3,high compressive strength,4,good thermal shocking resistance, 5, good corrosion ...