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Volume 26 Issue 4
Apr.  2019
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文章导航 >  矿物冶金与材料学报（英文）  > 2019  >  26(4): 430-439
Ataallah Bahrami, Mirsaleh Mirmohammadi, Yousef Ghorbani, Fatemeh Kazemi, Morteza Abdollahi,  and Abolfazl Danesh, Process mineralogy as a key factor affecting the flotation kinetics of copper sulfide minerals, Int. J. Miner. Metall. Mater., 26(2019), No. 4, pp. 430-439. https://doi.org/10.1007/s12613-019-1733-9
Cite this article as:
Ataallah Bahrami, Mirsaleh Mirmohammadi, Yousef Ghorbani, Fatemeh Kazemi, Morteza Abdollahi,  and Abolfazl Danesh, Process mineralogy as a key factor affecting the flotation kinetics of copper sulfide minerals, Int. J. Miner. Metall. Mater., 26(2019), No. 4, pp. 430-439. https://doi.org/10.1007/s12613-019-1733-9
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研究论文Open Access

Process mineralogy as a key factor affecting the flotation kinetics of copper sulfide minerals

  • Department of Mining Engineering, Urmia University, Urmia P.O. Box 57561/51818, Iran

  • School of Mining Engineering, College of Engineering, University of Tehran, Tehran P.O. Box:1439957131, Iran

  • Department of Civil, Environmental & Natural Resources Engineering, Luleå University of Technology, Luleå SE-971 87, Sweden

  • Complex of Copper Processing-Sungun, East Azerbaijan Province, Headquarters Rd, Tabriz-Iran

  • 通讯作者:

    Yousef Ghorbani    E-mail: Yousef.Ghorbani@ltu.se

  • The aim of this study is to apply process mineralogy as a practical tool for further understanding and predicting the flotation kinetics of the copper sulfide minerals. The minerals' composition and association, grain distribution, and liberation within the ore samples were analyzed in the feed, concentrate, and the tailings of the flotation processes with two pulp densities of 25wt% and 30wt%. The major copper-bearing minerals identified by microscopic analysis of the concentrate samples included chalcopyrite (56.2wt%), chalcocite (29.1wt%), covellite (6.4wt%), and bornite (4.7wt%). Pyrite was the main sulfide gangue mineral (3.6wt%) in the concentrates. A 95% degree of liberation with d80 > 80 μm was obtained for chalcopyrite as the main copper mineral in the ore sample. The recovery rate and the grade in the concentrates were enhanced with increasing chalcopyrite particle size. Chalcopyrite particles with a d80 of approximately 100 μm were recovered at the early stages of the flotation process. The kinetic studies showed that the kinetic second-order rectangular distribution model perfectly fit the flotation test data. Characterization of the kinetic parameters indicated that the optimum granulation distribution range for achieving a maximum flotation rate for chalcopyrite particles was between the sizes 50 and 55 μm.
    • Research ArticleOpen Access

    Process mineralogy as a key factor affecting the flotation kinetics of copper sulfide minerals

    + Author Affiliations
      Abstract
    • The aim of this study is to apply process mineralogy as a practical tool for further understanding and predicting the flotation kinetics of the copper sulfide minerals. The minerals' composition and association, grain distribution, and liberation within the ore samples were analyzed in the feed, concentrate, and the tailings of the flotation processes with two pulp densities of 25wt% and 30wt%. The major copper-bearing minerals identified by microscopic analysis of the concentrate samples included chalcopyrite (56.2wt%), chalcocite (29.1wt%), covellite (6.4wt%), and bornite (4.7wt%). Pyrite was the main sulfide gangue mineral (3.6wt%) in the concentrates. A 95% degree of liberation with d80 > 80 μm was obtained for chalcopyrite as the main copper mineral in the ore sample. The recovery rate and the grade in the concentrates were enhanced with increasing chalcopyrite particle size. Chalcopyrite particles with a d80 of approximately 100 μm were recovered at the early stages of the flotation process. The kinetic studies showed that the kinetic second-order rectangular distribution model perfectly fit the flotation test data. Characterization of the kinetic parameters indicated that the optimum granulation distribution range for achieving a maximum flotation rate for chalcopyrite particles was between the sizes 50 and 55 μm.
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