promotion white fused alumina in the end of 2010

White fused alumina powder, a kind of high-grade refractories, was made from the high quality alumina by melting above 2000 in the electric arc furnace and cooling. It is white with the main crystal phase alpha-Al2O3. The white alumina produced in titling electric arc furnace has the advantage of high bulk density and low porosity and the volume stability and thermal shock resistance can be improved.Advantage:White fused alumina has Al2O3 content around 99% min, also we passed the certification of ISO9001 All products will be supplied according to customers different requirementThe output is huge and stableThe chemical and physical analysis:Model:JIS#150 Chemical compositions Physical propertiesItemsValue of specification (%) ItemsPropertyAl2O3 99.55minColorWhiteSiO2 0.04max Bulk density1.75-1.95g/cm3Na2O 0.22max Grain density3.90g/cm3 minFe2O3 0.04maxhardnessMorse hardness9Micro hardness21600-22600kg/mm3content of magnetic substance0.0023%max