Low Copper Arsenic Refractory Copper-zinc Sulfide Ore Flotation Separation Process Research

Copper and zinc are important non-ferrous metals in national economic development, in thesulphide ore flotation, with copper zinc sulphide ore often close the symbiosis, the presence ofharmful impurities and the activation of sphalerite close to sulfide flotation of copper mineralproperties, to separate the copper and zinc sulfide ore has been difficult to, is one of the problemsof mineral processing industry.Copper pit copper zinc ore in guangxi China tin group as the research object of copper zincsulphide ore flotation separation process research, process mineralogy research shows that thelow grade copper ore, zinc is high, the fine disseminated extent of copper, zinc, mineralrelationship is relatively complex, with a small amount of milk dropwise chalcopyrite particlescontained in sphalerite, and contains a large number of arsenopyrite and a small amount ofpyrrhotite, gangue is given priority to with quartz and chlorite, belong to low native copper andarsenic difficult copper zinc sulfide ore. According to the particularity of ore properties, the testprinciple of adopting preferential flotation process for copper and zinc separation experiments,lime+zinc sulfate and sodium sulfite composite inhibitors inhibit selective collector Z-200zinc,sulfur, and secondary preferential flotation of copper, copper rough concentrate selected to obtainqualified copper concentrate; Copper tailings using lime+y-As composite inhibitors inhibitsulfur, arsenic, zinc flotation collector butyl xanthate and get qualified zinc concentrate. Copper,zinc cycle after a rough yongjiaxian sanjing two sweep, through laboratory miniatureclosed-circuit test, copper concentrate can be obtained with20.96%20.96%copper,6.88%zinc,arsenic, copper recovery rate75.20%; Zinc concentrate containing0.45%0.45%copper,48.36%zinc, arsenic, zinc, good index of recovery rate92.86%, good separation of copper and zinc. Theimpurity content in the concentrate quality analysis showed that low, enrichment of preciousmetals.This article is to add lime ball mill in mechanism, with the effects of the mineral collectorZ-200and the action mechanism of chalcopyrite, zinc sulfate and sodium sulfite compositeinhibitor to inhibit the action of the sphalerite mechanism and y-As inhibit arsenopyritemechanism are analyzed, and a good way to explain the role of reagent with mineral.