For Abrasives and Refrqactories High Purity Alumina We can supply over 30000mt per ... temperature.It is very important raw material for advanced refractories and abrasives.Its properties are as folowing. ItemsUnitIndexTypicalChemicalcompositionAl2O3%99.00min99.52SiO2 ... ---α-Al2O3Refractory gradeGrainmm0-50,0-1, 1-3, 3-5,5-8Finesmesh-200, 325GritF grade and P gradeFEPA16, 24, 46, 100,180,220 White ...