Paper # 25 Copper Mountain Overview on the Grinding
ball mills Figure 1 Overview grinding circuit The Copper Mountain SAG mill is 10363 mm [34 feet] in diameter and 6096 mm [20 feet] long It is a grate discharge mill with an inside diameter of 10363 mm [34 feet] and a grinding length of 5334 mm [ feet] The mill is driven by two 8 500 horsepower ABB motors