Grinding medium (zirconia beads), material, rotor structure, cooling water, flow rate of the material to be ground and equipment speed 1. Grinding media-(95 zirconium, 80 zirconium, 65 zirconium, cerium stabilized zirconia beads) Media specific gravity: The greater the specific gravity of the grinding media, the increase in energy, impact and shear forces, and the improvement of grinding ...