Alumina Ceramic Grinding Ball Features

- May 31, 2019-

Alumina ceramic grinding balls are made by rolling high-purity alumina powder through ball mill or isostatic pressing and then sintering at high temperature. The density of 92 alumina balls is about 3.6, Mohs hardness is 9, and water absorption is about 0.01. %, Self-wear amount is 0.01, these 4 characteristics.