1,Corundum brick used in tunnel kiln 2,have high bulk density 3,high compressive strength 4,good thermal shocking resistance Corundum brick used in tunnel kilnCharacteristics: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 ...