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development of novel hydrometallurgical process with micro powder electrode system

Research Project

Project/Area Number 21K18923
Research Category

Grant-in-Aid for Challenging Research (Exploratory)

Allocation TypeMulti-year Fund
Review Section Medium-sized Section 31:Nuclear engineering, earth resources engineering, energy engineering, and related fields
Research InstitutionKyushu University

Principal Investigator

Miki Hajime  九州大学, 工学研究院, 准教授 (10706386)

Project Period (FY) 2021-07-09 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥6,370,000 (Direct Cost: ¥4,900,000、Indirect Cost: ¥1,470,000)
Fiscal Year 2022: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Fiscal Year 2021: ¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
Keywords超微量粉末電極 / 硫化鉱物反応挙動 / 湿式製錬 / 浮遊選鉱 / 酸化還元反応 / 電位走査 / ストリッピングボルタンメトリ / インピーダンス測定 / 超微量粉末電気化学 / 硫化鉱物 / 浸出挙動 / 浮遊選別 / 電気化学 / 酸化還元剤 / 銅鉱物 / 含ヒ素銅鉱物 / 超微粉末電気化学 / 浸出機構 / 定量分析 / 湿式精錬
Outline of Research at the Start

溶液内の状態を把握するため、電気化学的手法が広く用いられているが、湿式精錬で一般的な懸濁系、粉末試料への適用は難しい。本研究では、応募者の開発した超微量粉末電極の改良などにより、微小粉末試料の浸出・反応の定量に加え、粉末同士の接触時の挙動を解析する。応募者の確立した手法は、簡便に超微量の微粒子電極を作成でき、感度も従来法と比較して歴然としている。これらミクロスケールでの微粒子の挙動を組み合わせることにより、マクロスケールとなる反応槽内の懸濁液溶液での浸出挙動を予測する。応募者の作成する、溶存酸素やpH、電位を常に最適な状態に制御できる電解槽の開発により、次世代型湿式精錬プロセス開発に貢献する。

Outline of Final Research Achievements

In the method of making ultra-small powder electrodes, a quantitative reproducible method was established and improved. Using these methods, we were able to evaluate the flotation method using redox agent for the separation of copper-arsenic minerals, which has been considered difficult so far. In addition, for the separation of copper-arsenic minerals, we also studied a method using magnetic sorting after heating, and evaluated the mineral changes before and after heating. In addition, we examined the promotion of the advancement of copper and arsenic sulfide minerals, which are known as difficult-to-process minerals in hydrometallurgy, and clarified that the leaching rate is greatly accelerated by the formation of pyroxenite, which is more easily leached in the presence of copper ions, in several minerals. These findings have not been reported.

Academic Significance and Societal Importance of the Research Achievements

本研究においては、これまで難しいとされてきた超微量粉末電極の定量的な手法を確立し、広く応用が可能となった。応用の範囲としては、浮遊選別における鉱物表面反応、表面の微量な変化が評価できた。また、硫化鉱物の加熱により鉄を含む鉱物が磁鉄鉱などに変化する様子や、微量の鉱物量変化について評価できた。また、難処理鉱として知られてきた黄銅鉱が、銅イオン存在下で浸出されやすい輝銅鉱に変化することについて、本法の応用により、検証できた。また、黄銅鉱以外の、斑銅鉱、硫ヒ銅鉱、ヒ四面銅鉱についても同様の現象がみられることを確認できた。これらのように、本法の有効性は明らかであり、より広く応用できる可能性を示した。

Report

(3 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • Research Products

    (23 results)

All 2023 2022 2021

All Journal Article (14 results) (of which Int'l Joint Research: 3 results,  Peer Reviewed: 14 results,  Open Access: 7 results) Presentation (9 results) (of which Int'l Joint Research: 6 results)

  • [Journal Article] Effect of hydrogen peroxide on selective flotation of chalcocite and enargite2023

    • Author(s)
      Gde Pandhe Wisnu Suyantara, Daniyarov Berdakh, Hajime Miki, Tsuyoshi Hirajima, Keiko Sasaki, Daishi Ochi, Yuji Aoki
    • Journal Title

      International Journal of Mining Science and Technology

      Volume: in press Issue: 6 Pages: 703-716

    • DOI

      10.1016/j.ijmst.2023.01.002

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] The Effect of Microwave Pre-treatment on the Magnetic Properties of Enargite and Tennantite and Their Separation from Chalcopyrite2023

    • Author(s)
      Elmahdy Ahmed M.、Miki Hajime、Sasaki Keiko、Farahat Mohsen
    • Journal Title

      Minerals

      Volume: 13 Issue: 3 Pages: 334-334

    • DOI

      10.3390/min13030334

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Significance of Fe contents on the surface of the gold ores in gold leaching by thiourea and ethylene thiourea2023

    • Author(s)
      Sasaki Keiko、Suyama Ikumi、Aoki Yuji、Konadu Kojo T.、Cindy、Chuaicham Chitiphon、Miki Hajime、Hirajima Tsuyoshi
    • Journal Title

      Minerals Engineering

      Volume: 191 Pages: 107957-107957

    • DOI

      10.1016/j.mineng.2022.107957

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Effect of sodium metabisulfite and slaked lime on the floatability and surface properties of chalcopyrite2022

    • Author(s)
      Suyantara Gde Pandhe Wisnu、Semoto Yuki、Miki Hajime、Hirajima Tsuyoshi、Sasaki Keiko、Ochi Daishi、Aoki Yuji、Berdakh Daniyarov、Ura Kumika
    • Journal Title

      Powder Technology

      Volume: 408 Pages: 117750-117750

    • DOI

      10.1016/j.powtec.2022.117750

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Technical Development of Arsenic Reduction from Copper Resources by Kyushu University and Sumitomo Metal Mining Co. Ltd.2022

    • Author(s)
      MIKI Hajime、OKIBE Naoko、SUYANTARA Gde Pandhe Wisnu、OYAMA Keishi、SASAKI Keiko、HIRAJIMA Tsuyoshi、NAKAMURA Takeshi、AOKI Yuji、TANAKA Yoshiyuki、SUWA Takahiro
    • Journal Title

      Resources Processing

      Volume: 68 Issue: 3 Pages: 124-131

    • DOI

      10.4144/rpsj.68.124

    • NAID

      40022824090

    • ISSN
      1348-6012, 1349-9262
    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] The estimation of microgram powder electrode system on sulfide mineral oxidation for mineral processing2022

    • Author(s)
      H. MIKI, H. FUKUDA, G.P.W. SUYANTARA, B. DANIYAROV, T. HIRAJIMA, K. SASAKI
    • Journal Title

      Proc. of 11th Copper2022 International Conference

      Volume: 1

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Arsenic removal from arsenic containing copper concentrate with heat treatment and magnetic separation2022

    • Author(s)
      H. MIKI, G.P.W. SUYANTARA, K. SASAKI, T. HIRAJIMA, Y. AOKI, H. FUKUDA
    • Journal Title

      Proc. of 11th Copper2022 International Conference

      Volume: 1

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Investigation of sodium sulfite as a selective depressant in the flotation of chalcopyrite and enargite2022

    • Author(s)
      G.P.W. SUYANTARA, T. HIRAJIMA, H. MIKI, K. SASAKI, Y.TANAKA, Y. AOKI
    • Journal Title

      Proc. of 11th Copper2022 International Conference

      Volume: 1

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Separation of enargite and chalcocite with H2O2 oxidation treatment using flotation method2022

    • Author(s)
      B. DANIYAROV, G.P.W. SUYANTARA, H. MIKI, T. HIRAJIMA, K. SASAKI, D. OCHI, Y. AOKI
    • Journal Title

      Proceedings of the 16th International Symposium on East Asian Resources Recycling Technology (EARTH2022)

      Volume: 1

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Effect of Sodium Metabisulfite on Selective Flotation of Chalcopyrite and Molybdenite2021

    • Author(s)
      Semoto Yuki、Suyantara Gde Pandhe Wisnu、Miki Hajime、Sasaki Keiko、Hirajima Tsuyoshi、Tanaka Yoshiyuki、Aoki Yuji、Ura Kumika
    • Journal Title

      Minerals

      Volume: 11 Issue: 12 Pages: 1377-1377

    • DOI

      10.3390/min11121377

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Effect of Na2SO3 on the floatability of chalcopyrite and enargite2021

    • Author(s)
      Suyantara Gde Pandhe Wisnu、Hirajima Tsuyoshi、Miki Hajime、Sasaki Keiko、Kuroiwa Shigeto、Aoki Yuji
    • Journal Title

      Minerals Engineering

      Volume: 173 Pages: 107222-107222

    • DOI

      10.1016/j.mineng.2021.107222

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Flotation behavior of chalcopyrite and enargite in sodium sulfite aqueous solution2021

    • Author(s)
      Gde Pandhe Wisnu Suyantara, Tsuyoshi Hirajima, Hajime Miki, Keiko Sasaki, Yoshiyuki Tanaka, Yuji Aoki
    • Journal Title

      Proceedings of Flotation'21 International Conference

      Volume: -

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Development of selective flotation of copper and molybdenum with various redox reagents2021

    • Author(s)
      Hajime Miki, Tsuyoshi Hirajima, Gde Pandhe Wisnu Suyantara, Yuki Semoto, Keiko Sasaki, Yoshiyuki Tanaka, Yuji Aoki
    • Journal Title

      Proceedings of Flotation'21 International Conference

      Volume: -

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] 九州大学・住友金属鉱山株式会社における「銅原料中からのヒ素低減技術開発」に向けた取り組み2021

    • Author(s)
      三木一、沖部奈緒子、Gde Pandhe Wisnu Suyantara、小山恵史、笹木圭子、平島剛、中村壮志、青木悠 二、田中善之、諏訪貴大
    • Journal Title

      環境資源工学

      Volume: 68 Pages: 124-131

    • NAID

      40022824090

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Presentation] The estimation of microgram powder electrode system on sulfide mineral oxidation for mineral processing2022

    • Author(s)
      H. MIKI, H. FUKUDA, G.P.W. SUYANTARA, B. DANIYAROV, T. HIRAJIMA, K. SASAKI
    • Organizer
      11th Copper2022 International Conference
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Arsenic removal from arsenic containing copper concentrate with heat treatment and magnetic separation2022

    • Author(s)
      H. MIKI, G.P.W. SUYANTARA, K. SASAKI, T. HIRAJIMA, Y. AOKI, H. FUKUDA
    • Organizer
      11th Copper2022 International Conference
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Investigation of sodium sulfite as a selective depressant in the flotation of chalcopyrite and enargite2022

    • Author(s)
      G.P.W. SUYANTARA, T. HIRAJIMA, H. MIKI, K. SASAKI, Y.TANAKA, Y. AOKI
    • Organizer
      11th Copper2022 International Conference
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Separation of enargite and chalcocite with H2O2 oxidation treatment using flotation method2022

    • Author(s)
      B. DANIYAROV, G.P.W. SUYANTARA, H. MIKI, T. HIRAJIMA, K. SASAKI, D. OCHI, Y. AOKI
    • Organizer
      16th International Symposium on East Asian Resources Recycling Technology (EARTH2022)
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Oxidation treatment for separation of copper sulfide minerals and arsenic-bearing copper minerals using flotation2022

    • Author(s)
      Gde Pandhe Wisnu Suyantara、三木 一、笹木 圭子、平島 剛、田中善之、滝田絵里
    • Organizer
      資源・素材学会2022年度春季大会
    • Related Report
      2021 Research-status Report
  • [Presentation] Selective flotation of Copper Mineral and Enargite with PAX and Hydrogen Peroxide2022

    • Author(s)
      Daniyarov Berdakh、三木 一、Gde Pandhe Wisnu Suyantara、笹木 圭子、平島 剛
    • Organizer
      資源・素材学会2022年度春季大会
    • Related Report
      2021 Research-status Report
  • [Presentation] Flotation behavior of chalcopyrite and enargite in sodium sulfite aqueous solution2021

    • Author(s)
      Gde Pandhe Wisnu Suyantara, Tsuyoshi Hirajima, Hajime Miki, Keiko Sasaki, Yoshiyuki Tanaka, Yuji Aoki
    • Organizer
      Flotation'21 International Conference
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] Development of selective flotation of copper and molybdenum with various redox reagents2021

    • Author(s)
      Hajime Miki, Tsuyoshi Hirajima, Gde Pandhe Wisnu Suyantara, Yuki Semoto, Keiko Sasaki, Yoshiyuki Tanaka, Yuji Aoki
    • Organizer
      Flotation'21 International Conference
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] 含ヒ素、含モリブデン銅精鉱における選択浮遊選別による不純物除去の試み2021

    • Author(s)
      三木 一、Gde Pandhe Wisnu Suyantara、笹木 圭子、平島 剛、青木悠二、黒岩樹人
    • Organizer
      資源・素材学会 秋季大会
    • Related Report
      2021 Research-status Report

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Published: 2021-07-13   Modified: 2024-01-30  

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