| 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,(4):542-549 |
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| Mineralogical Analysis of Copper-Lead-Zinc Mixed Concentrate and Study on Separation Efficiency |
| Received:November 12, 2020 Revised:June 08, 2021 |
| DOI：10.15898/j.cnki.11-2131/td.202011220152 |
| Key words: mixed concentrate mineral liberation analysis single liberation degree theoretical separation efficiency process mineralogy |
| Author Name | Affiliation | E-mail | | XIE Hai-yun | Faculty of Land Resource Engineering, Kunming University of Science and Technology, Kunming 650093, China | | | LIU Yan-hao | Faculty of Land Resource Engineering, Kunming University of Science and Technology, Kunming 650093, China | | | JI Cui-cui | Faculty of Land Resource Engineering, Kunming University of Science and Technology, Kunming 650093, China | 15887860811@139.com | | JIN Yan-ling | Faculty of Land Resource Engineering, Kunming University of Science and Technology, Kunming 650093, China | | | ZHANG Pei | Faculty of Land Resource Engineering, Kunming University of Science and Technology, Kunming 650093, China | | | TIAN Xiao-song | Yunnan Copper Mine Research Institute, Kunming 650093, China | | | LIU Rong-xin | Faculty of Land Resource Engineering, Kunming University of Science and Technology, Kunming 650093, China | |
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| Abstract: |
BACKGROUND: There 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.
OBJECTIVES: To improve the separation efficiency of valuable minerals in mixed concentrates.
METHODS: In 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).
RESULTS: The 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.
CONCLUSIONS: Improving 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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