Alumina ball is a porous high dispersion of solid materials, main ingredients for alumina (92% or higher), product than major, can greatly improve the grinding efficiency, reduce the milling time, save energy, reduce cost, at the same time effectively increase mill effective volume, thus increasing the amount of grinding material;The high hardness, low wear, can greatly prolong the service life of grinding medium;Products with high whiteness and will not affect by the color of the grinding material. "Classification of alumina ball" Alumina ball according to the different alumina content can be divided into: aluminum ball, high aluminum and alumina ball.We usually put 60% 65% alumina content is divided into aluminum ball;75% 80% alumina content are called high aluminum ball, more than 90% of the alumina content for high alumina ball.With high alumina ball and subdivided into 90 porcelain, 92 porcelain, 95 porcelain, 99 porcelain, porcelain and 99 because of its high production cost and the mass production, there are very few large manufacturers at present mainly for the part of special ceramics factory by hand.