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Volume 26 Issue 2
Feb.  2019
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文章导航 >  矿物冶金与材料学报（英文）  > 2019  >  26(2): 143-151
Kolela J Nyembwe, Elvis Fosso-Kankeu, Frans Waanders, and Kasongo D Nyembwe, Structural, compositional and mineralogical characterization of carbonatitic copper sulfide: Run of mine, concentrate and tailings, Int. J. Miner. Metall. Mater., 26(2019), No. 2, pp. 143-151. https://doi.org/10.1007/s12613-019-1718-8
Cite this article as:
Kolela J Nyembwe, Elvis Fosso-Kankeu, Frans Waanders, and Kasongo D Nyembwe, Structural, compositional and mineralogical characterization of carbonatitic copper sulfide: Run of mine, concentrate and tailings, Int. J. Miner. Metall. Mater., 26(2019), No. 2, pp. 143-151. https://doi.org/10.1007/s12613-019-1718-8
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研究论文

Structural, compositional and mineralogical characterization of carbonatitic copper sulfide: Run of mine, concentrate and tailings

  • Water Pollution Monitoring and Remediation Initiatives Research Group, School of Chemical and Minerals Engineering, Faculty of Engineering, North-West University, Potchefstroom 2520, South Africa

  • School of Mining, Metallurgy and Chemical Engineering, Faculty of Engineering and the Built Environment, University of Johannesburg, Johannesburg 2028, South Africa

  • 通讯作者:

    Elvis Fosso-Kankeu    E-mail: elvis.fossokankeu@nwu.ac.za

  • The aim of this study was to determine the structural, compositional, and mineralogical composition of carbonatitic copper sulfide concentrator plant streams. Three samples, each from a different stream (run of mine (ROM), concentrate, and tailings) of a copper concentrator were characterized using various techniques, including stereomicroscopy, X-ray fluorescence, X-ray diffraction, Fourier transform infrared (FTIR) spectroscopy, scanning electron microscopy (SEM) in conjunction with energy-dispersive X-ray spectroscopy (EDS), and optical microscopy. The results reveal that each stream possesses its own unique compositional features. Carbonate minerals associated with calcite and dolomite, followed by quartz, remain the major minerals in both the ROM and tails streams. In the ROM stream, chalcopyrite appears to occur as veins within the carbonatite-hosting ore body. Mineral phase mutation was discovered in the tails stream because magnetite formerly identified in the ROM as the primary iron oxide had evolved into hematite. This metamorphosis was likely promoted by the concentration process. The concentration process was effective, upgrading the chalcopyrite content from 2wt% in the ROM stream to 58wt% in the concentrate stream; it was accompanied by bornite (4wt%), anilite (3wt%), and digenite (2.5wt%). In addition, the concentrate stream exhibited properties distinctive from those of the other streams. The FTIR analysis showed the existence of a sulfide group related to the chalcopyrite mineral. Free chalcopyrite grains were observed in the concentrate by SEM analysis, and their mineral presence was supported by the EDS analysis results. All characterization techniques corresponded well with each other regarding the structure, chemistry, and composition of the samples.
    • Research Article

    Structural, compositional and mineralogical characterization of carbonatitic copper sulfide: Run of mine, concentrate and tailings

    + Author Affiliations
      Abstract
    • The aim of this study was to determine the structural, compositional, and mineralogical composition of carbonatitic copper sulfide concentrator plant streams. Three samples, each from a different stream (run of mine (ROM), concentrate, and tailings) of a copper concentrator were characterized using various techniques, including stereomicroscopy, X-ray fluorescence, X-ray diffraction, Fourier transform infrared (FTIR) spectroscopy, scanning electron microscopy (SEM) in conjunction with energy-dispersive X-ray spectroscopy (EDS), and optical microscopy. The results reveal that each stream possesses its own unique compositional features. Carbonate minerals associated with calcite and dolomite, followed by quartz, remain the major minerals in both the ROM and tails streams. In the ROM stream, chalcopyrite appears to occur as veins within the carbonatite-hosting ore body. Mineral phase mutation was discovered in the tails stream because magnetite formerly identified in the ROM as the primary iron oxide had evolved into hematite. This metamorphosis was likely promoted by the concentration process. The concentration process was effective, upgrading the chalcopyrite content from 2wt% in the ROM stream to 58wt% in the concentrate stream; it was accompanied by bornite (4wt%), anilite (3wt%), and digenite (2.5wt%). In addition, the concentrate stream exhibited properties distinctive from those of the other streams. The FTIR analysis showed the existence of a sulfide group related to the chalcopyrite mineral. Free chalcopyrite grains were observed in the concentrate by SEM analysis, and their mineral presence was supported by the EDS analysis results. All characterization techniques corresponded well with each other regarding the structure, chemistry, and composition of the samples.
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