... kaolin, gypsum, barite, coal ash, slag, silicon carbide, brown alumina, cement, quartz, feldspar, refractory, etc.2. Working principle of Industrial Grinding ... the coarse powder and fine powder are separated. Fine powder with suitable size is collected by cyclone collector, coarse powder is ... trouble rate, and can be operated continuously. Industrial Grinding Equipment with ISO,CE,BV Quliaty Approved