1.high alumina ball 2.Al2O3:60-95% 3.Size:30-70mm 4.high mechanical strength 5.good wear-resistance High Alumina ballswith high density, high mechanical strength and good wear-resistance, high chemical stability, Grinding ceramic ball has been used widely in ball mills as abrasive media for ceramic raw materials and glaze materials and glaze materials in ceramic, cement,paints,pigments,chemicals, ...