Ni Leaching from NiS by Cu Oxidant with Metal Pieces in Acid Solution

DOI
  • Oshima Kazumasa
    Department of Chemical Engineering, Faculty of Engineering, Kyushu University
  • Takaira Yusaku
    Department of Chemical Engineering, Faculty of Engineering, Kyushu University
  • Kawada Hiroyuki
    Department of Chemical Engineering, Faculty of Engineering, Kyushu University
  • Yamamoto Tsuyoshi
    Department of Chemical Engineering, Faculty of Engineering, Kyushu University
  • Heguri Shin-ichi
    Niihama Laboratory, Technology Division, Sumitomo Metal Mining Co., Ltd.
  • Kishida Masahiro
    Department of Chemical Engineering, Faculty of Engineering, Kyushu University

Bibliographic Information

Other Title
  • Cu酸化剤を用いた酸性溶液中でのNiSからのNi浸出における金属片の添加効果

Description

<p>To enhance Ni recovery from nickel sulfide (NiS), the effects of the metal addition on the Ni leaching using a copper oxidant in acidic solutions were investigated. The use of sodium borohydride (NaBH4) as a reducing agent as the pre-treatment enhanced the initial leaching rate. Additionally, the addition of elemental metals such as iron (Fe0) and tin (Sn0) during the leaching led to a substantial increase in the Ni leaching rate. The added metal reduced Cu2+ to Cu0 in the solution and deposited onto the NiS surface, which then removed nickel disulfide (NiS2), a substance that inhibits the Ni leaching, thereby promoting stable Ni leaching.</p>

Journal

Keywords

Details 詳細情報について

  • CRID
    1390866570019171840
  • DOI
    10.2320/jinstmet.j202504
  • ISSN
    18806880
    24337501
    00214876
  • Text Lang
    ja
  • Data Source
    • JaLC
  • Abstract License Flag
    Disallowed

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