White Calcined Alumina for Ceramic, Refractory , Polishing and PaintSpecifications 1. Manufacturer,calcined alumina 2.Al2O3:Generally 99.0%min or as your request3.Usage: Ceramic, Refractory , Metallurgical , Grinding, Polishing, Paint etc1. Ceramic gradecategoryAl2O3SiO2Fe2O3Na2OTrue densityPowder99.70.050.030.043.97 g/cm3Micro Powder99.70.080.030.043.97 g/cm32. Grinding and Polishing gradeModel No.P78P45P34P23P12P01Grit size7-8um4-5um3-4um2-3um1-2um0.5umTrue density(g/cm3)3.963.963.963.953.933.90Mohs Hardness9Packing25KG BAG + 1 MT BAG OR AS REQUEST3. Refractory and Metallurgical gradeCategoryAl2O3SiO2Fe2O3Na2OTrue densityPowder99.00.100.050.13.96 g/cm3Micro Powder99.00.150.050.13.95 g/cm34. Paint gradeModel No.Al2O3 (Min)SiO2 (Max)Fe2O3 (Max)Na2O (Max)DensityA130199.00.100.030.083.95 g/cm3A140299.60.080.030.053.90 g/cm3Grit sizeNormal size or Produce according to your request