... ~70mm 4.Manufactory type:CIP or Rolling - HIGHER DENSITY - HIGHER HARDNESS - HIGH WEAR RESISTANCE - HIGH GRINDING EFFICIENCY Alumina grinding balls have ... , high abrasion, entire specification,strong practicability. It can be used for ball mill, mixing mill, vibration mill, sand mill, etc. The ... .2≤0.2≤0.15≤0.10 Alumina Grinding Ball for Mining