Copper leaching from complex chalcopyrite-rich ores: …
Ball mill grinding. In this study, the laboratory high-energy ball mill (QM-3SP2 planetary mill, China) served as the grinding apparatus. Four 100 mL zirconium dioxide jars were loaded with zirconium dioxide balls (ρ = 6.5 g/cm 3) with diameters of 10 mm, 15 mm, and 20 mm, respectively. The ball-to-powder weight ratios ranged from 5:1 to 50:1 ...
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