... mills like sand mill,, attritor-mill,vibratory mill and ball mill to make efficient, clean, economical dispersion and grinding of electronic pastes, ... , food and medicine raw materials. Compared with traditional grinding medium such as alumina balls, zirconium silicate balls, ... balls, agate balls and glass pearls, zirconia grinding mediumY-TZP grinding medium)has high density, high hardness ,high ...