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XIE Hai-yun, LIU Yan-hao, JI Cui-cui, JIN Yan-ling, ZHANG Pei, TIAN Xiao-song, LIU Rong-xin. Mineralogical Analysis of Copper-Lead-Zinc Mixed Concentrate and Study on Separation Efficiency[J]. Rock and Mineral Analysis, 2021, 40(4): 542-549. DOI: 10.15898/j.cnki.11-2131/td.202011220152
Citation: XIE Hai-yun, LIU Yan-hao, JI Cui-cui, JIN Yan-ling, ZHANG Pei, TIAN Xiao-song, LIU Rong-xin. Mineralogical Analysis of Copper-Lead-Zinc Mixed Concentrate and Study on Separation Efficiency[J]. Rock and Mineral Analysis, 2021, 40(4): 542-549. DOI: 10.15898/j.cnki.11-2131/td.202011220152
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Mineralogical Analysis of Copper-Lead-Zinc Mixed Concentrate and Study on Separation Efficiency

    Abstract
  • BACKGROUNDThere are large amounts of copper-lead-zinc polymetallic sulfide ore resources in Yunnan Province, China, but the efficient separation of these resources remains a major problem.OBJECTIVESTo improve the separation efficiency of valuable minerals in mixed concentrates.METHODSIn this study, the major elemental content, phase composition, mineral composition, particle size characteristics, and monomer liberation degree of a mixed concentrate were analyzed using a variety of modern detection methods such as chemical analysis, X-ray diffraction, and mineral liberation analysis (MLA).RESULTSThe results showed that the mixed concentrate had fine particles, and some minerals occurred as intergrowths or inclusions. The monomer liberation degree of the target minerals chalcopyrite, galena, and sphalerite was medium to low, ranging from 69.28% to 70.56%. It was preliminarily predicted that the theoretical separation efficiencies of copper, lead, and zinc in the mixed concentrate were 71.63%, 62.97% and 72.72%, respectively.CONCLUSIONSImproving the grinding fineness of mixed concentrates to promote the full liberation of metal minerals is a key way to improve the separation efficiency of copper, lead, and zinc minerals.

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