... ; 2. d97: 2micron~150micron. FW/HTS Ball Mill ClassifierWorking Principle Ball Mill Air classifier works with cyclone separator, dust collector ... bottom outlet.Performance Features1. Suitable for dry fine powder classifying, powders of ball shape, flake shape and needle ... Widely used in chemical industry, mineral industry (especially good for calcium carbonate, kaolin, quartz, talc, mica and other ...