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Development of minerai processing and refining process for organic carbon-containing copper ores

Research Project

Project/Area Number 19K15487
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 31020:Earth resource engineering, Energy sciences-related
Research InstitutionAkita University

Principal Investigator

Haga Kazutoshi  秋田大学, 国際資源学研究科, 准教授 (10588461)

Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2021: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2020: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2019: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Keywords銅鉱石 / 有機炭素 / 浮選 / 高温・高圧浸出 / 溶媒抽出 / 高温高圧浸出 / 炭素含有銅鉱石 / 浸出 / 炭酸塩鉱物 / 金属回収 / 鉱物処理
Outline of Research at the Start

近年、鉱床中の不純物含有量の増加により、開発できない鉱山が数多く存在する。銅の需要が高まる昨今、不純物を含む鉱床を資源化する技術を開発することは喫緊の課題となっている。本申請課題では、現在開発に着手することができず早急な技術開発が求められている有機炭素を含む銅鉱石を対象に、浮選、高温高圧浸出、溶媒抽出、電解採取を組み合わせた金属銅生産プロセスの開発を行う。また各種要素技術における分離メカニズムを実験的あるいは化学的に解明し、不純物を含む銅鉱石の処理プロセスの基盤となるような学術知見を取得することを本課題の目的とする。

Outline of Final Research Achievements

In this study, we attempted to develop a copper recovery process combining flotation, high-temperature and high-pressure leaching, and solvent extraction methods in order to establish a treatment process for difficult-to-treat copper ores containing organic carbon. As a result of a series of studies, it was clarified that copper minerals can be concentrated by flotation, copper can be selectively leached by high temperature and high pressure leaching, and copper can be condensed by solvent extraction, thus establishing a process that can recover copper from difficult-to-treat copper ores, which are difficult to treat using existing mineral processing technology.

Academic Significance and Societal Importance of the Research Achievements

銅は、ほとんどの工業製品になくてはならない言わば「産業のバックボーン」となる金属素材であり、今後更なる需要増加が見込まれる。ところが、銅の原料となる銅鉱石は、劣質化が進んでおり、銅を安定的に供給するためには不純物を含む鉱石から銅を選択的に回収するプロセスが必要となる。本研究で開発した、浮選、高温高圧浸出、溶媒抽出のプロセスは、炭素を含む鉱石のみならず、有害元素を含む鉱石、低品位鉱石からの銅回収にも応用できることから、今後の銅の安定供給に寄与するプロセスを考案できた。

Report

(4 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (5 results)

All 2021 2019

All Journal Article (2 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 2 results,  Open Access: 2 results) Presentation (3 results) (of which Int'l Joint Research: 1 results,  Invited: 1 results)

  • [Journal Article] Extraction of copper from complex carbonaceous sulfide ore by direct high-pressure leaching2021

    • Author(s)
      Godirilwe Labone L.、Magwaneng Refilwe S.、Sagami Riku、Haga Kazutoshi、Batnasan Altansukh、Aoki Shogo、Kawasaki Takashi、Matsuoka Hidekazu、Mitsuhashi Kohei、Kawata Masanobu、Shibayama Atsushi
    • Journal Title

      Minerals Engineering

      Volume: 173 Pages: 107181-107181

    • DOI

      10.1016/j.mineng.2021.107181

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Copper Recovery and Reduction of Environmental Loading from Mine Tailings by High-Pressure Leaching and SX-EW Process2021

    • Author(s)
      Godirilwe Labone L.、Haga Kazutoshi、Altansukh Batnasan、Takasaki Yasushi、Ishiyama Daizo、Trifunovic Vanja、Avramovic Ljiljana、Jonovic Radojka、Stevanovic Zoran、Shibayama Atsushi
    • Journal Title

      Metals

      Volume: 11 Issue: 9 Pages: 1335-1335

    • DOI

      10.3390/met11091335

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] 選鉱・湿式分離技術を組み合わせた難処理銅資源からの金属回収と環境負荷軽減2021

    • Author(s)
      芳賀一寿, 川村茂, 高崎康志, 柴山敦
    • Organizer
      資源・素材2021(札幌)
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] Recovery of copper and iron from rougher concentrate of carbonaceous copper ore by pressure leaching2019

    • Author(s)
      Kazutoshi Haga
    • Organizer
      EARTH2019
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] 選鉱学的手法を組み合わせた難処理銅鉱石からの銅と鉄の回収条件の検討2019

    • Author(s)
      相模陸
    • Organizer
      資源・素材2019(京都)
    • Related Report
      2019 Research-status Report

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Published: 2019-04-18   Modified: 2023-01-30  

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