There are more than 100 kinds of ball mills, mainly including edge driving tube mills, air-swept coal plants,center-driven tube mills, pendulum mills, white cement mills,ceramic mills, vertical mills,etc. Ball mills, widely used in fields of cement,construction materials, power generation, metallurgy, ore-dressing, chemical engineering, aluminum plants,etc, are ideal equipment for grinding limestones,cement clinker, coal powder, gypsum, ores, slags and other materials in different hardness.