Mineral Processing Equipments: Grinding Mills

Grinding and pulverizing reduce ore to a desired fineness for further treatment.

In its basic form, a grinding mill consists of a horizontal, slow-speed, rotating cylindrical drum. Rod, pebble, and ball mills are the most common types of grinding mills used in minerals processing operations. Steel rods, balls, or pebbles roll freely inside the drum during rotation to provide the grinding action.

Article Sources:
http://www.osha.gov/SLTC/silicacrystalline/dust/chapter_2.html