Abstract
This paper is aimed at a typical complex polymetallic copper-zinc sulfide ores in Yunnan province, China, and adopted the process of bulk floatation discarding tailing under coarse grinding condition, the influence factors are researched such as grinding fineness, types and dosage of flotation reagents. When the coarse grinding size-74μm 75% and butyl xanthate and ethyl xanthate as combination collector, The amount of flotation discarding tailing is 60% for crude ores, the tailings contain 0.058% Cu, 0.027% Pb and 0.12% Zn, the loss rate of various metals in tailing is 3.21% Cu, 5.49% of Pb and 3.35% of Zn. This research has referenced significance to economical development and utilization of copper-zinc sulfide ore resources.
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