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white Fused Alumina Product Description White Fused Alumina is a kind of middle or high level refractory material. With the eye-catching white color and the advantage of high density and low micro porosity, it can effectively improve the volume stability and the thermal shock resistance of the material. It is the mainly raw material to produce middle or high level unshaped or shaped refractory material. It is applied to the unshaped refractory materials, such as refractory carstables for ladles, middle or high level iron runner casting material, gunning refractory and fabricate parts ect. It also can be used to kinds of corundum products, such as corundum bricks, corundum, mullite corundum, refining corundum perforated bricks, overall blowtorch and combined nozzle, side ceiling of the high temperature kiln, ect. All in all, it is widely used in steel, cement, ceramics, grinding material and petrochemical industries. Physical and Chemical Index White fused Alumina IndexFunctionSpecificationMain Chemical Composition%Magnetic Material%Al2O3Na2OSiO2Grinding Materials and apparatusF12#—80#≥99.4≤0.4—≤0.0390#—150#≥99.3≤0.4≤0.03180#—240#≥98.2≤0.4—≤0.03W1#-63# ≥99.3≤0.4≤0.03≤0.05Refractory MaterialsCut Wire0-1mm 1-3mm 3-5mm 5-8mm 8-12mm≥99.3≤0.4≤0.06≤0.05Fine Grit180#—0 200#-0 320#-0≥99≤0.4≤0.1≤0.03Remark: F instead of the specification for grinding apparatus and grit blast; W for fine grit Physical Index Item Index Color white Crystal Form Trigonal system Hardness(mohs) ≥9.0 Melting Point(°C) 2250 Max Temperature(°C) 1900 True Density(g/cm3) ≥3. 90 Linear Expansivity(0—1600°C) 7—9