... 70 Application: cement.minera,chemical AL2O3: 95%, Density: 3.65 Alumina ball for ceramic : The Products, featured by high hardness ... : The products are widely used as grinding media of ball mill on ceramics, cements, paints, refractories, inorganic mineral ... industries, etc. Technical date Sheet of abrasive alumina ball: Performance Index95 SeriesAl2o3(%)≥95Fe2O3(%)≤0.01Moh’s hardness9.5Moisture ...