... into the specification as follows: Common Ceramic Ball, Inert Alumina Ceramic Ball, Medium-Alumina Ceramic Ball, High-AluminaCeramic Ball and 99%-AluminaCeramic BallDia ... , iron and steel industry. It can save more than 40-70% power, increase more than 15% production capability, decrease 40% ... as well.Type : According to the content of aluminum:60-70%, 65-75%, 92%, 95% Size: Φ25mm-Φ75mm4. Ceramic ball ...