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rolls screen phosphate iron ore to microns. About 80% of these are mine mill, 5% are grinding equipment, and 2% are China Tencan QM 50L laboratory silica sand ball grinding mill, roll ball mill for silica mill from 10 to 100 microns silica sand grinding mill silica sand ball mill Application: Gold, copper, lead, zinc, iron, hematite,rock phosphate, manganese ore.