Graphite and carbon refractory bricks have high thermal conductivity, which can reduce the erosion rate of the blast furnace body and prevent the penetration and erosion of molten iron, and are widely used in large blast furnace hearths.

Item 项目		Self-baked carbon block 自焙炭块		carbon block for blast furnace 高炉炭块	Semi-graphite baked carbon block 半石墨质焙烧炭块	Microporous carbon block 微孔炭砖	Micro porous carbon block 超微孔炭砖	Graphite block 石墨砖	Semi-graphite-carbon-silicon carbide block 半石墨炭-碳化硅砖
F.C(%)	≥	93	86		78			98	50
SiC(%)	≥								30
Ash(%)	≤	6.0	13.0	10.0	20.0			1
Apparent Porosity 显气孔率(%)	≤	20	25	22	18	16	15	25	16
Bulk Density 体积密度(g/cm3)	≥	1.5	1.45	1.5	1.6	1.63	1.7	1.55	1.8
Cold Crushing Strength 常温耐压强度(Mpa)	≥	30	25	30	35.0	38	36	25	35