... . AL2O3: 95%, 92%, 75%, 68% industrial construction alumina ball : The Products, featured by high hardness, high density, low ... : 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 hardness9Moisture content ...