Stone mill, rock mill, ore mill: Good quality,bigger capacity Fineness of the ... finished product can be adjust. Stone mill, rock mill, ore mill:HGM Three-Rings & Medium-Speed MicroPowder MillHGM series ... barite, gypsum, alunite, black lead, fluorite, phosphate rock, potassium ore, floatstone etc. When HGM mills are used to process materials ... not be advised additionally. Stone mill, rock mill, ore mill