Paper # 25 Copper Mountain Overview on the Grinding ...
The Copper Mountain ball mills are 7315 mm [24 feet] in diameter and 12040 mm [ feet] long. They are overflow discharge ball mills with inside diameters of 7315 mm [24 feet] and grinding lengths of 11887 mm [39 feet]. Each Ball mill is also driven by two 8,500 horsepower ABB motors. Figure 3 The 24'' x '' ball mill