SAG Mill Circuit Design — Autogenous Grinding for Large-Scale Mining Operations

SAG Mill Circuit

Semi-autogenous grinding (SAG) mills use ore plus steel balls as grinding media. Preferred for large throughput operations (>10,000 t/d).

Feed Preparation

ROM ore crushed to P80 = 100-150 mm for SAG mill feed. Scalping screens remove fines to bypass SAG mill.

Trommel & Pebble Crushing

SAG mill discharge trommel screens oversize pebbles for recycling. Critical-size pebbles may be crushed by pebble crusher for return to mill.