Union Process, a manufacturer of particle size reduction and dispersing equipment, has manufactured a grinding mill for battery technology. The Attritor mill has a special high purity zirconium oxide (yttria-tetragonal zirconia polycrystal-stabilized) grinding tank that is jacketed for cooling. The mill is driven by a 7.5 HP motor that is totally enclosed, fan-cooled, and explosion-proof. A variable frequency (inverter) drive is utilized and is installed in a National Electrical Manufacturers Association enclosure. The mill also includes a special ZrO2 discharge bar grid for use with the 5 mm yttria zirconium oxide media being used for the application. Union Process;www.unionprocess.com