Note
Semi autogenous mill or SAG mills as they are often called, can perform grinding operations equivalent to two or three stages of crushing and screening. SAG mill are characterized by their large diameter and short length as compared to ball mills. The inside of the mill is lined with lifting plates to lift the material inside the mill, where it then falls off the plates onto the rest of the ore charge. SAG mining are often used as industrial grinding mill of modern concentrators, which can directly produce particle size of finished products or prepare feed materials for the downstream grinding sections.