Corundum bricks are mainly used in ironmaking blast furnaces and blast furnace hot blast stoves, refining furnaces, sliding water heaters, glass melting furnaces, and petrochemical industrial furnaces.

Item 项目		High Purity Corundum Brick 高纯刚玉砖	Corundum Brick 刚玉砖	Corundum Mullite Brick 刚玉莫来石砖
Al2O3(%)	≥	99	90	80
SiO2(%)	≤	0.2	8	18
Fe2O3(%)	≤	0.2	0.2	0.3
Apparent Porosity 显气孔率(%)	≤	19	18	18
Bulk Density 体积密度(g/cm3)	≥	3.2	3.0	2.8
Refractoriness 耐火度(℃)	≥	1790	1790	1790
Cold Crushing Strength 常温耐压强度(Mpa)	≥	100	100	100.0
Refractoriness under Load 荷重软化开始温度(℃) (0.2Mpa)	≥	1700	1700	1700