Full definition
Semi-Autogenous Grinding mill using the ore itself plus a reduced steel ball charge (6–12% of volume) as grinding media. Diameters: 6–12 m; power: 5–25 MW. Combines secondary crushing and primary grinding in one unit, reducing processing stages. Central to Cu and Au comminution circuits. Brands: Metso, FLSmidth, CITIC HIC.