... stability of raw material 4.size:3-70mm Grinding media ceramic ball : The Products, featured by high hardness, high density ... : 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 Index95SeriesAl2o3(%)≥95Fe2O3(%)≤0.15Moh’s hardness9.5Moisture content ...