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Volume 26 Issue 10
Oct.  2019
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文章导航 >  矿物冶金与材料学报（英文）  > 2019  >  26(10): 1258-1265
Levent Kartal, Mehmet Barış Daryal, Güldem Kartal Şireli,  and Servet Timur, One-step electrochemical reduction of stibnite concentrate in molten borax, Int. J. Miner. Metall. Mater., 26(2019), No. 10, pp. 1258-1265. https://doi.org/10.1007/s12613-019-1867-9
Cite this article as:
Levent Kartal, Mehmet Barış Daryal, Güldem Kartal Şireli,  and Servet Timur, One-step electrochemical reduction of stibnite concentrate in molten borax, Int. J. Miner. Metall. Mater., 26(2019), No. 10, pp. 1258-1265. https://doi.org/10.1007/s12613-019-1867-9
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研究论文

One-step electrochemical reduction of stibnite concentrate in molten borax

  • Department of Metallurgical and Materials Engineering, Hitit University, Corum 19030, Turkey

  • Department of Metallurgical and Materials Engineering, Istanbul Technical University, Istanbul 34469, Turkey

  • 通讯作者:

    Levent Kartal    E-mail: leventkartal@hitit.edu.tr

  • In this study, antimony production from a stibnite concentrate (Sb2S3) was performed in one step using a molten salt electrolysis method and borax as an electrolyte. Electrochemical reduction of the stibnite concentrate was performed at 800℃ under galvanostatic conditions and explained in detail by the reactions and intermediate compounds formed in the borax. The effects of current density (100-800 mA·cm-2) and electrolysis time (10-40 min) on cathodic current efficiency and antimony yields were systematically investigated. During the highest current efficiency, which was obtained at 600 mA·cm-2, direct metal production was possible with 62% cathodic current efficiency and approximately 6 kWh/kg energy consumption. At the end of the 40-min electrolysis duration at 600 mA·cm-2 current density, antimony reduction reached 30.7 g and 99% of the antimony fed to the cell was obtained as metal.
    • Research Article

    One-step electrochemical reduction of stibnite concentrate in molten borax

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      Abstract
    • In this study, antimony production from a stibnite concentrate (Sb2S3) was performed in one step using a molten salt electrolysis method and borax as an electrolyte. Electrochemical reduction of the stibnite concentrate was performed at 800℃ under galvanostatic conditions and explained in detail by the reactions and intermediate compounds formed in the borax. The effects of current density (100-800 mA·cm-2) and electrolysis time (10-40 min) on cathodic current efficiency and antimony yields were systematically investigated. During the highest current efficiency, which was obtained at 600 mA·cm-2, direct metal production was possible with 62% cathodic current efficiency and approximately 6 kWh/kg energy consumption. At the end of the 40-min electrolysis duration at 600 mA·cm-2 current density, antimony reduction reached 30.7 g and 99% of the antimony fed to the cell was obtained as metal.
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