Converting AG to SAG mills: The Gol-E-Gohar Iron Ore Company case

► Increasing liner lifter face angle from 7 to 30° increased throughput by 27%. ► Converting AG to SAG mills by adding 5(%) balls increased throughput by 40%. ► SAG milling also decreased the product size by 3%. ► Stability of the process was the main outcome of conversion to SAG milling.