GONGYI FIFTH REFRACTORIES HEAD FACTORY

Refractories for Blast Furnace

	Alumina-Carbon Brick

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The products is made by adopting special grade bauxite clinker,corundum and graphite as main raw materials,adding several kinds of super fine powder as additives,featuring micropore structure,good alkali resistance and high thremal conductivity.It is used for lining of bosh,belly and cooling wall of large and middle sized blast furnace.
Sintered micropore AL2O3-C Sintered AL2O3-C Bricks
WLT-2
AL2O3% Min60 60
C% Min11 Min12
SiC% / Min5
Fe2O3% Max1.5 Max1.5
BD,g/cm3 Min2.85 Min2.70
AP,% Max17 Max13
CCS,MPa Min60 Min60
RUL 0.20MPa,C Min1650 Min1650
TSR(1100C water cooling) Min100cycle Min50
Corrosion index to
hot metal(1100C) Max3% /
Permeability,mDa Max2% /
Average pore size Max1µm /
<1µm Pore volume Min70% /
Alkali resistance,% Max10 /
TC(0-800C),W/m.K Min13 /