Sub-Sector Profile: Iron and Steel - Zambia Development Agency1 "Mill ball" is a cast-iron product, which is used for crashing of copper ores in . of the materials and spare parts can be domestically procured to reduce costs.cost of mill balls in zambia,FQM Zambia LimitedAug 28, 2015 . at the milling platform of the new Sentinel Copper Mine processing plant. The 40 foot diameter . 44 foot length 22MW Ball mill. . challenging period for many in Zambia and globally due to low commodity prices, but through.Sentinel: Siemens Gearless Mill DrivesJan 19, 2016 . The mills at Sentinel in Zambia are amongst the world's biggest, with 2 off 40 ft SAG mills complete with 28 MW drives, and 2 off 28 foot-ball mills with 22 . . Siemens Gearless Mill Drives result in reduced total costs and.
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