Difference Between Ball Mill And Rod Mill
Attrition mill is a type of grinding mill by kinds of media to crush lump to powder like substances. The impact can be rock on rock such as in an Autogenous Grinding (AG) mill, rock and a small ball charge (~10 ), used in Semi Autogenous Grinding (SAG) mills, balls of various sizes in Ball Mills and less commonly these days, steel rods in Rod Mills.SAG is an acronym for semi autogenous grinding. SAG mills are autogenous mills that also use grinding balls like a ball mill. A SAG mill is usually a primary or first stage grinder. SAG mills use a ball charge of 8 to 21 .   The largest SAG mill is 42′ (12.8m) in diameter, powered by a 28 MW (38,000 HP) motor.  A SAG mill with a 44′ (13.4m) diameter and a power of 35 MW (47,000 HP) has been.