Structural, microstructural, and thermal characterizations of a chalcopyrite concentrate from the Singhbhum shear zone, India

Ritayan Chatterjee, Shamik Chaudhuri, Saikat Kumar Kuila, Dinabandhu Ghosh

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    Cite this article as:

    Ritayan Chatterjee, Shamik Chaudhuri, Saikat Kumar Kuila, and Dinabandhu Ghosh, Structural, microstructural, and thermal characterizations of a chalcopyrite concentrate from the Singhbhum shear zone, India, Int. J. Miner. Metall. Mater., 22(2015), No. 3, pp.225-232. https://dx.doi.org/10.1007/s12613-015-1065-3
    Ritayan Chatterjee, Shamik Chaudhuri, Saikat Kumar Kuila, and Dinabandhu Ghosh, Structural, microstructural, and thermal characterizations of a chalcopyrite concentrate from the Singhbhum shear zone, India, Int. J. Miner. Metall. Mater., 22(2015), No. 3, pp.225-232. https://dx.doi.org/10.1007/s12613-015-1065-3
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    Structural, microstructural, and thermal characterizations of a chalcopyrite concentrate from the Singhbhum shear zone, India

    基金项目: 

    R. Chatterjee wishes to thank Prof. Sven Lidin (Division of Polymer and Materials Chemistry, Lund University, Sweden) for his kind help in collecting powder XRD data, and Prof. Srinivasan Iyengar (Division of Materials Engineering, Lund University, Sweden) for providing the electron microscopy facility.

    The structural and morphological characterizations of a chalcopyrite concentrate, collected from the Indian Copper Complex, Ghatshila, India, were carried out by X-ray diffraction, scanning electron microscopy, and energy-dispersive X-ray spectroscopy. The concentrate powder was composed mainly of free chalcopyrite and low quartz in about 3:1 weight ratio. The particle size was about 100 μm. Spectroscopic studies (FTIR, Raman, UV-visible) of the concentrate supported the XRD findings, and also revealed a marginal oxidation of the sulfide phase. The energy band gap of the sulfide was found to be 3.4 eV. Differential thermal analysis and thermogravimetry of the concentrate showed a decomposition of chalcopyrite at 658 K with an activation energy of 208 kJ·mol-1, and two successive structural changes of silica at 848 K and 1145 K.

     

    Structural, microstructural, and thermal characterizations of a chalcopyrite concentrate from the Singhbhum shear zone, India

    Author Affilications
    • Funds: 

      R. Chatterjee wishes to thank Prof. Sven Lidin (Division of Polymer and Materials Chemistry, Lund University, Sweden) for his kind help in collecting powder XRD data, and Prof. Srinivasan Iyengar (Division of Materials Engineering, Lund University, Sweden) for providing the electron microscopy facility.

    • Received: 16 April 2014; Revised: 05 June 2014; Accepted: 09 June 2014;
    The structural and morphological characterizations of a chalcopyrite concentrate, collected from the Indian Copper Complex, Ghatshila, India, were carried out by X-ray diffraction, scanning electron microscopy, and energy-dispersive X-ray spectroscopy. The concentrate powder was composed mainly of free chalcopyrite and low quartz in about 3:1 weight ratio. The particle size was about 100 μm. Spectroscopic studies (FTIR, Raman, UV-visible) of the concentrate supported the XRD findings, and also revealed a marginal oxidation of the sulfide phase. The energy band gap of the sulfide was found to be 3.4 eV. Differential thermal analysis and thermogravimetry of the concentrate showed a decomposition of chalcopyrite at 658 K with an activation energy of 208 kJ·mol-1, and two successive structural changes of silica at 848 K and 1145 K.

     

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