Composite bricks have the characteristics of high softening temperature, high compressive strength and good slag resistance.

Item 项目		Composite Brown corundum  brick 复合棕刚玉炉门砖	Composite corundum silicon carbide brick 复合刚玉碳化硅砖
Al2O3(%)	≥	75	80
SiC(%)	≥	10	10
Apparent Porosity 显气孔率(%)	≤	10	18
Bulk Density 体积密度(g/cm3)	≥	2.9	3.0
Refractoriness 耐火度(℃)	≥	1790	1790
Cold Crushing Strength 常温耐压强度(Mpa)	≥	100	120
Refractoriness under Load 荷重软化开始温度(℃) (0.2Mpa)	≥	1660	1700
Application 典型应用		Calcium carbide furnace door 电石炉炉门	Blast furnace tuyere, iron taphole, slag taphole 高炉风口、铁口、渣口