#### Paper # 25

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. Copper Gold Ore Beneficiation Mining Grinding Use Ball MillCopper Gold Ore Beneficiation Mining Grinding Use Ball Mill Get Latest Price Min Order / Reference FOB Price 1 Piece US $10 000 300 000/ Piece Port Shanghai China Transport Package Suitable for Long Distance and Sea Transportation . A specific energy based ball mill model From 01 02 2016· For continuous ball mill operation the mass flow rate of mill product P i is the result of mill ground product H i and discharge rate D i expressed by Eq 6 6 P i = H i · D i The product size distribution can be calculated as a ratio of the mass flow rate by size P i to the total mass flow rate . Crushing and Screening Operations at Bougainville CopperThe concentrator at Bougainville Copper Limited has an annual throughput of million tonnes/year producing approximately 175 000 tonnes copper tonnes gold and 50 tonnes silver Conventional three stage crushing and screening are used to reduce run of mine ore to an average product d80 size of The primary objective of the crush ing plant is to provide …