Zircon Sand Ball Milling Machine,, Dry grinding of chitosan powder by a planetary ball mill Eighty grams of zirconium oxide balls of 1 5 mm diameter and 1 4 g of Chat Now ZIRCONIA (YSZ) GRINDING MEDIA Inframat Advanced Materials Zirconia (YSZ) grinding media is the most durable and efficient CAD/CAM Milling Bur 6 mm for more stability during milling; Individual extension options, e.g. wet ...