Mineralogical Analysis of Copper-Lead-Zinc Mixed Concentrate and Study on Separation Efficiency

XIE Hai-yun; LIU Yan-hao; JI Cui-cui; JIN Yan-ling; ZHANG Pei; TIAN Xiao-song; LIU Rong-xin

doi:10.15898/j.cnki.11-2131/td.202011220152

Rock and Mineral Analysis > 2021 > 40(4): 542-549. > DOI: 10.15898/j.cnki.11-2131/td.202011220152

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

1.
Faculty of Land Resource Engineering, Kunming University of Science and Technology, Kunming 650093, China
2.
Yunnan Copper Mine Research Institute, Kunming 650093, China

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Received Date: November 11, 2020
Revised Date: June 07, 2021
Accepted Date: July 01, 2021
Published Date: July 27, 2021

Abstract

HIGHLIGHTS
(1) Mineral liberation analysis (MLA) was used to study the process mineralogy of refractory mixed concentrate.

(2) It was difficult to separate the mixed concentrate because of the fine particles of valuable metal minerals and the low degree of monomer liberation.

(3) The separation process was ascertained by analyzing the mineralogical properties of the copper-lead-zinc mixed concentrate.

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.
- mixed concentrate,
- mineral liberation analysis,
- single liberation degree,
- theoretical separation efficiency,
- process mineralogy

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Mineralogical Analysis of Copper-Lead-Zinc Mixed Concentrate and Study on Separation Efficiency

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