Converting AG to SAG mills: The Gol-E-Gohar Iron Ore ...
The Gol-E-Gohar iron ore concentration plant located in southeast Iran. Three 9 m × 2.05 m AG mills are used in parallel in a dry operation to grind a feed nominally passing 32 cm, which is the product of a gyratory crusher.The SAG mills is driven by a 4023 hp motor and runs at a constant (12 rpm rotational) speed (i.e., 85% of critical speed) in one direction.