Wide Grading Range: d97=2~15 um. No contamination. No rise in temperature. Inert gas can be used as media for milling of flammable and explosive material. It is widely applied to pulverize non-metallic ores, talcum, barite, kaolin, quartz, graphite fire retardant materials, high-grade grinding media, chemical, metallurgy, western medicines, traditional Chinese medicine, agricultural chemical and ceramics, as well as for such dry powders as highly adhesive and superfine pesticides.