grinding media and grid openings for coarser feed the subsequent unit with smaller grinding media to achieve the finer grind. Table 4. Continuous dry grinding process data A5 Material: Zirconia -50 Attritor: HSA-1 Al 2O 3 lined tank (5.3L) ArO 2 sleeved arms Media: 2-2.5mm ZrSiO 4 beads Process Rate: .25kg/hr Particle Size: 50% < 0.46μ A6