coal crusher in india ball coal mill description
ball coal mill description . Low 10 to 20 RPM Ball tube mills 16 rpm in Vindhyachal Medium High 40 to 70 RPM 900 to 1000 RPM Bowl Mill, MPS Impact or Mill, Ball and Hammer Race mill Mill. Beater Mill or Fan Mill. TYPES OF MILL Tube or ball mills: These are low speed machines that grind. the coal with steel balls in a rotating ...