Particle Size Distribution Effects that Should be Considered . - full-scale size distribution parameters. Case study 1 – copper ore milled in a rod mill/ closed circuit ball mill. In case study 1, a survey was performed of the crushing, grinding and flotation circuit of a concentrator treating a copper sulfide ore. Figure 9 shows the comminution flow sheet. Feed to flotation (ie product of grinding).copper ore crushed product sizes,Copper Flotation - 911 MetallurgistAs it is shown in this study the ¾” or 1″ crushed ore is fed to a rod mill operating in open circuit and discharging a product approximately minus 14-mesh. The discharge from this primary rod mill is equally distributed to two ball mills which are in closed circuit with SRL Rubber Lined.Copper Mining and Processing: Processing of Copper Ores .Following mining, transporting, and crushing to a consistent gravel or golf ball-size, the crushed ore is piled into a heap on top of an impenetrable layer, on a slight slope. . The final product of the thickening stage is a combination of 30% copper and other metals; this copper concentrate is then sent to the smelter.
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