鉄(II)イオンを促進剤とする黄銅鉱浸出における鉄酸化細菌の生育抑制とその効果 Effects of Several Inhibitors to Thiobacillus ferrooxidans on Ferrous Promoted Chalcopyrite Leaching

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抄録

Ferrous ions enhance copper extraction from chalcopyrite in sulfuric acid solutions in air at ambient temperatures, because they promote chalcopyrite oxidation with dissolved oxygen. However iron-oxidizing bacteria such as Thiobacillus ferrooxidans rapidly consume ferrous ions, suppressing copper extraction. In this paper, three compounds were used to inhibit ferrous oxidation by T. ferrooxidans and their effects on ferrous promoted chalcopyrite leaching were investigated in the presence and absence of the bacteria. Sodium lauryl sulfate and tannic acid suppressed not only the bacterial ferrous oxidation but also the chalcopyrite oxidation with dissolved oxygen, resulting in a suppression of copper extraction. High concentrations of sulfuric acid (> 0.05 mol dm-3) suppressed the bacterial ferrous oxidation and promoted chalcopyrite oxidation with dissolved oxygen, causing enhanced copper extraction.

収録刊行物

  • 資源と素材 : 資源・素材学会誌 : journal of the Mining and Materials Processing Institute of Japan  

    資源と素材 : 資源・素材学会誌 : journal of the Mining and Materials Processing Institute of Japan 115(3), 172-176, 1999-03-25 

    The Mining and Materials Processing Institute of Japan

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各種コード

  • NII論文ID(NAID)
    10002469294
  • NII書誌ID(NCID)
    AN10062646
  • 本文言語コード
    ENG
  • 資料種別
    ART
  • ISSN
    09161740
  • NDL 記事登録ID
    4786618
  • NDL 雑誌分類
    ZP41(科学技術--金属工学・鉱山工学)
  • NDL 請求記号
    Z17-315
  • データ提供元
    CJP書誌  CJP引用  NDL  J-STAGE 
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