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Development of innovative Cu-As-Mo complex ore separation with seawater flotation

Research Project

Project/Area Number 22H00310
Research Category

Grant-in-Aid for Scientific Research (A)

Allocation TypeSingle-year Grants
Section一般
Review Section Medium-sized Section 31:Nuclear engineering, earth resources engineering, energy engineering, and related fields
Research InstitutionKyushu University

Principal Investigator

三木 一  九州大学, 工学研究院, 准教授 (10706386)

Co-Investigator(Kenkyū-buntansha) 笹木 圭子  早稲田大学, 理工学術院, 教授 (30311525)
Suyantara Gde・Pandhe・Wisnu  九州大学, 工学研究院, 准教授 (70932367)
Project Period (FY) 2022-04-01 – 2026-03-31
Project Status Granted (Fiscal Year 2025)
Budget Amount *help
¥42,250,000 (Direct Cost: ¥32,500,000、Indirect Cost: ¥9,750,000)
Fiscal Year 2025: ¥8,970,000 (Direct Cost: ¥6,900,000、Indirect Cost: ¥2,070,000)
Fiscal Year 2024: ¥10,400,000 (Direct Cost: ¥8,000,000、Indirect Cost: ¥2,400,000)
Fiscal Year 2023: ¥9,880,000 (Direct Cost: ¥7,600,000、Indirect Cost: ¥2,280,000)
Fiscal Year 2022: ¥13,000,000 (Direct Cost: ¥10,000,000、Indirect Cost: ¥3,000,000)
Keywords浮遊選別 / 含ヒ素銅鉱物 / 含モリブデン銅精鉱 / ナノ粒子鉄 / 有機酸 / 過酸化水素水 / ピロ亜硫酸ナトリウム / 輝水鉛鉱 / 分離機構 / 疎水化 / 親水性沈殿 / 銅ヒ素分離 / 銅モリブデン分離 / 海水利用 / 電気化学
Outline of Research at the Start

銅資源の需要は高まっているが、銅鉱山は、複雑化・難処理化の傾向にある。また、多数の銅鉱山は乾燥地帯にあり、鉱業用水を海水の淡水化により対応している場合が多い。申請者らは、難処理銅鉱石からのCu-As、Cu-Mo分離を、酸化還元剤等の添加後、海水浮選で分離回収する方法を見出してきた。本研究では、各種鉱物の捕収剤吸着速度測定、精密な電気化学手法と各種表面分析、浮選試験等により、銅鉱物、含As銅鉱物、Mo鉱物の表面性状変化を詳細かつ定量的に調べ、これら鉱物の浮選分離メカニズムを明らかにする。回分式、連続式浮選試験による最適分離プロセス、混合鉱石の浮選産物回収率予測法を確立し、実操業への適用を目指す。

Outline of Annual Research Achievements

銅精鉱からの不純物除去について広く研究を行った。銅鉱物として黄銅鉱だけではなく、輝銅鉱、斑銅鉱について検討を行い、ヒ素鉱物(硫ヒ銅鉱)およびモリブデン鉱物(輝水鉛鉱)との浮遊選別による分離を行えることを明らかにしてきている。また、これらの分離においては、各種酸化還元反応を利用し、酸化剤として過酸化水素水を、還元剤としてピロ亜硫酸ナトリウムを用いることで、環境負荷の少ない手法を提案してきた。これらのメカニズムについても検討を行い、原子間力顕微鏡やXPS表面分析などの手法で、捕収剤や抑制剤の作用機構について検討を行った。その結果、各種還元剤が銅の捕収剤を脱離させる上に銅を親水化することにより抑制されることが明らかとなった。一方で、モリブデン鉱物の捕収剤について還元剤が作用しないことについても明らかとし、これらの作用の組み合わせで銅鉱物とモリブデン鉱物の選択浮遊選別が起こることが分かった。一方で、鉛鉱物や亜鉛鉱物についても選択浮遊選別を行い、鉛鉱物を浮鉱として回収する一方で亜鉛鉱物を抑制できる条件が得られた。これらの結果は、国際学会において7件、学術論文において12件の発表を行っている。国際学会(Quality In Research,バリ、インドネシア)においては、最優秀ポスター発表賞を得た。精鉱、鉱石においても同様の結果が得られている。また、連続浮遊選別機の予備試験において、予備的に石炭の脱灰の浮遊選別について検討し、最適なパルプ濃度と流量についても検討を行った。

Current Status of Research Progress
Current Status of Research Progress

2: Research has progressed on the whole more than it was originally planned.

Reason

これまで難しいとされてきた銅精鉱からのヒ素分離、モリブデン分離について実用的な浮遊選別を行ってきている。高純度鉱物の分離について、ミニカラム浮選器を用いた試験を行い、銅鉱物として黄銅鉱、輝銅鉱、斑銅鉱を、ヒ素鉱物として硫ヒ銅鉱を、モリブデン鉱物として輝水鉛鉱を用いて試験を行った。どの鉱物においてもある程度の分離効率が得られ、添加物として、環境負荷の小さな各種酸化還元剤を利用し、従来困難であった銅ヒ素分離、従来法に匹敵する銅モリブデン分離を行うことが出来ている。含ヒ素および含モリブデン銅精鉱においても同様の浮選試験をデンバー浮選機およびファーレンワルド型浮選器を用いて行い、純粋鉱物を用いた時以上の分離効率が得られた。これらの分離メカニズムについても提案し、矛盾の無い説明が出来ている。これらのほかに、鉛鉱物として方鉛鉱や硫酸鉛、亜鉛鉱物として閃亜鉛鉱を用いた選択浮遊選別についても検討し、高純度鉱物および鉱石、精鉱においても分離を行うことが出来ている。これらの手法を連続浮遊選別機において適用するため、予備試験を石炭と粘土鉱物を含んだ鉱物においても行ってきている。

Strategy for Future Research Activity

今後は、銅ヒ素分離および銅モリブデン鉱物分離について、予備試験でさらに良い結果が得られ、また広いpHにおいても適用できる亜硫酸水素ナトリウムにおいて詳細に検討し、論文発表を行う予定である。銅の抑制剤としてより環境にやさしいナノ鉄沈殿、シュウ酸などについても、予備試験の結果良い結果が得られているため、これらについても早急に論文発表を行う予定である。これらについて、想定されるメカニズムについて検討を行う。鉛鉱物や亜鉛鉱物における応用についても検討する。これまで行ってきた手法を用いてこれらの分離を行うことが出来るものと思われる。また、連続浮選器での最適な分離法について検討を行う。試薬の添加および使用の供給速度は、LabViewなどにおいて制御する予定である。

Report

(3 results)
  • 2023 Annual Research Report
  • 2022 Comments on the Screening Results   Annual Research Report
  • Research Products

    (62 results)

All 2024 2023 2022

All Journal Article (29 results) (of which Int'l Joint Research: 8 results,  Peer Reviewed: 29 results,  Open Access: 7 results) Presentation (33 results) (of which Int'l Joint Research: 19 results)

  • [Journal Article] Selective Flotation of Copper Concentrates Containing Arsenic Minerals Using Potassium Amyl Xanthate and Oxidation Treatment2024

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

      MATERIALS TRANSACTIONS

      Volume: 65 Issue: 1 Pages: 27-36

    • DOI

      10.2320/matertrans.M-M2023811

    • ISSN
      1345-9678, 1347-5320
    • Year and Date
      2024-01-01
    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Effect of oxidation treatment on the selective separation of molybdenite from chalcocite using flotation2024

    • Author(s)
      Berdakh Daniyarov、Miki Hajime、Hirajima Tsuyoshi、Sasaki Keiko、Ulmaszoda Akbarshokh、Nakao Ryota、Ochi Daishi、Aoki Yuji、Suyantara Gde Pandhe Wisnu
    • Journal Title

      Powder Technology

      Volume: 431 Pages: 119078-119078

    • DOI

      10.1016/j.powtec.2023.119078

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Effect of pH and Precipitations on Copper–Molybdenum Rougher Flotation in Seawater2023

    • Author(s)
      Tanaka Yoshiyuki、Miki Hajime、Suyantara Gde Pandhe Wisnu、Aoki Yuji、Okamoto Hideyuki、Ura Kumika、Hirajima Tsuyoshi
    • Journal Title

      MATERIALS TRANSACTIONS

      Volume: 64 Issue: 6 Pages: 1225-1231

    • DOI

      10.2320/matertrans.M-M2023805

    • ISSN
      1345-9678, 1347-5320
    • Year and Date
      2023-06-01
    • Related Report
      2023 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
      2023 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
      2023 Annual Research Report 2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [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
      2023 Annual Research Report 2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Effect of goethite (α-FeOOH) nanoparticles on the surface properties and flotation behavior of chalcopyrite2023

    • Author(s)
      Suyantara Gde Pandhe Wisnu、Rizki Intan Nurul、Ulmaszoda Akbarshokh、Miki Hajime、Sasaki Keiko
    • Journal Title

      Journal of Environmental Chemical Engineering

      Volume: 11 Issue: 3 Pages: 110006-110006

    • DOI

      10.1016/j.jece.2023.110006

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Sodium metabisulfite as a copper depressant in the selective flotation of copper-molybdenum concentrate using seawater2023

    • Author(s)
      Suyantara Gde Pandhe Wisnu、Miki Hajime、Ochi Daishi、Aoki Yuji、Ura Kumika、Berdakh Daniyarov、Ulmaszoda Akbarshokh、Dwitama Eska Putra、Sasaki Keiko、Hirajima Tsuyoshi
    • Journal Title

      Advanced Powder Technology

      Volume: 34 Issue: 12 Pages: 104258-104258

    • DOI

      10.1016/j.apt.2023.104258

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Study on the Effect of Iron Oxide-Hydroxide Nanoparticles on Mixed Flotation of Bornite and Molybdenite2023

    • Author(s)
      Kazuto Satomura, Gde Pandhe Wisnu Suyantara, Hajime Miki, Keiko Sasaki
    • Journal Title

      Proceedings of The 18th International Conference on Quality in Research

      Volume: 1

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Evaluation of micro powder electrode on sulfide mineral leaching for hydrometallurgical process2023

    • Author(s)
      HAJIME MIKI, Tsuyoshi Hirajima, Gde Pandhe Wisnu Suyantara, Keiko Sasaki
    • Journal Title

      Proceedings of The 18th International Conference on Quality in Research

      Volume: 1

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Preliminary Evaluation of the Impact of Nanoparticles on Enargite Flotation2023

    • Author(s)
      Eska Putra Dwitama, Akbarshokh Ulmaszoda, Gde Pandhe Wisnu Suyantara, Keiko Sasaki, Hajime Miki
    • Journal Title

      Proceedings of The 18th International Conference on Quality in Research

      Volume: 1

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Arsenic removal with heat treatment - magnetic separation from dirty copper conc2023

    • Author(s)
      HAJIME MIKI, Gde Pandhe Wisnu Suyantara, Keiko Sasaki
    • Journal Title

      Proceedings of The 18th International Conference on Quality in Research

      Volume: 1

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Utilizing Oxidation Treatment for Arsenic Mineral Removal in Producing a Cleaner Copper Concentrate using Flotation2023

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

      Proceedings of The 18th International Conference on Quality in Research

      Volume: 1

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Investigation of Chalcopyrite Floatability in the Presence of Goethite Nanoparticles2023

    • Author(s)
      Akbarshokh Ulmaszoda, Gde Pandhe Wisnu Suyantara, Intan Nurul Rizki, Keiko Sasaki, Hajime Miki
    • Journal Title

      Proceedings of The 18th International Conference on Quality in Research

      Volume: 1

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] The Effect Of Various Reagents On Selective Flotation Of Molybdenite And Chalcocite2023

    • Author(s)
      Ryota Nakao, Hajime Miki, Eska Putra Dwitama, Keiko Sasaki, Daishi Ochi, Yuji Aoki, Gde Pandhe Wisnu Suyantara
    • Journal Title

      Proceedings of The 18th International Conference on Quality in Research

      Volume: 1

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Evaluation of the Effect of Nanoparticles on the Flotation of Enargite2023

    • Author(s)
      Eska Putra Dwitama, Akbarshokh Ulmaszoda, Gde Pandhe Wisnu Suyantara, Keiko Sasaki, and Hajime Miki
    • Journal Title

      Proceedings of International Symposium on Earth Science and Technology 2024

      Volume: 1

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Investigation of the Effect of Goethite Nananoparticles on Chalcopyrite Floatability2023

    • Author(s)
      Akbarshokh Ulmaszoda, Gde Pandhe Wisnu Suyantara, Intan Nurul Rizki, Keiko Sasaki and Hajime Miki
    • Journal Title

      Proceedings of International Symposium on Earth Science and Technology 2024

      Volume: 1

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] The Study of Selective Flotation on Molybdenite and Chalcocite with the Effect of Sodium Metabisulfide and Collector2023

    • Author(s)
      Nakao Ryota, Gde Pandhe Wisnu Suyantara, Hajime Miki, Keiko Sasaki
    • Journal Title

      Proceedings of International Symposium on Earth Science and Technology 2024

      Volume: 1

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Study on the Effect of Iron Oxide-Hydroxide Nanoparticles on Mixed Flotation of Bornite and Molybdenite2023

    • Author(s)
      Kazuto Satomura、Suyantara Gde Pandhe Wisnu 、Hajime Miki、Keiko Sasaki
    • Journal Title

      Proceedings of International Symposium on Earth Science and Technology 2024

      Volume: 1

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [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] Effect of a sulfite reagent on floatability of chalcopyrite and enargite2022

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

      Proc. of XXXI International Mineral Processing Congress (IMPC 2022)

      Volume: 1

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [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] Estimation of Cu and Mo recoveries of five type ores composite in seawater flotation2022

    • Author(s)
      Y. TANAKA, T. HIRAJIMA, H. MIKI, G.P.W. SUYANTARA
    • 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] Study on the effect of sodium metabisulfite on selective flotation of chalcopyrite and molybdenite with seawater2022

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

      Proc. of International Symposium on Earth Science and Technology 2022

      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

      Proc. of International Symposium on Earth Science and Technology 2022

      Volume: 1

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Presentation] 銅モリブデン浮遊選別に及ぼす各種抑制剤の効果とそのメカニズム2024

    • Author(s)
      三木 一、Suyantara Gde Pandhe Wisnu、中尾 亮太、里村 和音、笹木 圭子、越智 大司、青木 悠二
    • Organizer
      一般社団法人資源・素材学会 2024年度 春季大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Selective separation of molybdenite from chalcocite using flotation under oxidizing condition2024

    • Author(s)
      Gde Pandhe Wisnu Suyantara, Daniyarov Berdakh, Hajime Miki, Tsuyoshi Hirajima, Keiko Sasaki, Akbarshokh Ulmaszoda, Ryota Nakao, Daishi Ochi, Yuji Aoki
    • Organizer
      一般社団法人資源・素材学会 2024年度 春季大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Study on the Effect of Iron Oxide-Hydroxide Nanoparticles on Mixed Flotation of Bornite and Molybdenite2023

    • Author(s)
      Kazuto Satomura、Suyantara Gde Pandhe Wisnu 、Hajime Miki、Keiko Sasaki
    • Organizer
      International Symposium on Earth Science and Technology 2024
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] The Study of Selective Flotation on Molybdenite and Chalcocite with the Effect of Sodium Metabisulfide and Collector2023

    • Author(s)
      Nakao Ryota, Gde Pandhe Wisnu Suyantara, Hajime Miki, Keiko Sasaki
    • Organizer
      International Symposium on Earth Science and Technology 2024
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Evaluation of the Effect of Nanoparticles on the Flotation of Enargite2023

    • Author(s)
      Eska Putra Dwitama, Akbarshokh Ulmaszoda, Gde Pandhe Wisnu Suyantara, Keiko Sasaki, and Hajime Miki
    • Organizer
      International Symposium on Earth Science and Technology 2024
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Investigation of the Effect of Goethite Nananoparticles on Chalcopyrite Floatability2023

    • Author(s)
      Akbarshokh Ulmaszoda, Gde Pandhe Wisnu Suyantara, Intan Nurul Rizki, Keiko Sasaki and Hajime Miki
    • Organizer
      International Symposium on Earth Science and Technology 2024
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Evaluation of micro powder electrode on sulfide mineral leaching for hydrometallurgical process2023

    • Author(s)
      HAJIME MIKI, Tsuyoshi Hirajima, Gde Pandhe Wisnu Suyantara, Keiko Sasaki
    • Organizer
      The 18th International Conference on Quality in Research
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Preliminary Evaluation of the Impact of Nanoparticles on Enargite Flotation2023

    • Author(s)
      Eska Putra Dwitama, Akbarshokh Ulmaszoda, Gde Pandhe Wisnu Suyantara, Keiko Sasaki, Hajime Miki
    • Organizer
      The 18th International Conference on Quality in Research
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Study on the Effect of Iron Oxide-Hydroxide Nanoparticles on Mixed Flotation of Bornite and Molybdenite2023

    • Author(s)
      Kazuto Satomura, Gde Pandhe Wisnu Suyantara, Hajime Miki, Keiko Sasaki
    • Organizer
      The 18th International Conference on Quality in Research
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Arsenic removal with heat treatment - magnetic separation from dirty copper conc2023

    • Author(s)
      HAJIME MIKI, Gde Pandhe Wisnu Suyantara, Keiko Sasaki
    • Organizer
      The 18th International Conference on Quality in Research
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Utilizing Oxidation Treatment for Arsenic Mineral Removal in Producing a Cleaner Copper Concentrate using Flotation2023

    • Author(s)
      Gde Pandhe Wisnu Suyantara, Hajime Miki, Keiko Sasaki, Yuji Aoki, Daishi Ochi, Tsuyoshi Hirajima
    • Organizer
      The 18th International Conference on Quality in Research
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] The Effect Of Various Reagents On Selective Flotation Of Molybdenite And Chalcocite2023

    • Author(s)
      Ryota Nakao, Hajime Miki, Eska Putra Dwitama, Keiko Sasaki, Daishi Ochi, Yuji Aoki, Gde Pandhe Wisnu Suyantara
    • Organizer
      The 18th International Conference on Quality in Research
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Investigation of Chalcopyrite Floatability in the Presence of Goethite Nanoparticles2023

    • Author(s)
      Akbarshokh Ulmaszoda, Gde Pandhe Wisnu Suyantara, Intan Nurul Rizki, Keiko Sasaki, Hajime Miki
    • Organizer
      The 18th International Conference on Quality in Research
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 銅鉱・輝水鉛鉱の選択浮遊選別に及ぼす Diesel oil 及び二亜硫酸ナトリウムの影響に関する研究2023

    • Author(s)
      中尾 亮太、Gde Pandhe Wisnu Suyantara、三木 一、笹木 圭子
    • Organizer
      資源・素材学会九州支部若手研究者及び技術者の研究発表会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 斑銅鉱の浮遊選別に及ぼす酸化鉄ナノ粒子の影響に関する研究2023

    • Author(s)
      里村 和音、Gde Pandhe Wisnu Suyantara、三木 一、笹木 圭子
    • Organizer
      資源・素材学会九州支部若手研究者及び技術者の研究発表会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Investigation of organic acid as a selective depressant for pyrite2023

    • Author(s)
      Akbarshokh Ulmaszoda、Gde Pandhe Wisnu Suyantara、Hajime Miki、Keiko Sasaki Taisuke Sakakibara、Hisatoshi Furuya、Satoru Okubo
    • Organizer
      資源・素材学会九州支部若手研究者及び技術者の研究発表会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Utilization of adsorption studies and surface analysis for preliminary selection of selective depressants in Cu-Mo flotation2023

    • Author(s)
      Eska Putra Dwitama、Akbarshokh Ulmaszoda、Gde Pandhe Wisnu Suyantara Hajime Miki、Keiko Sasaki
    • Organizer
      資源・素材学会九州支部若手研究者及び技術者の研究発表会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 斑銅鉱と輝水鉛鉱の混合浮遊選別に及ぼす酸化鉄ナノ粒子の影響に関する研究2023

    • Author(s)
      里村 和音、Gde Pandhe Wisnu Suyantara、三木 一、笹木 圭子
    • Organizer
      資源・素材2023(松山)
    • Related Report
      2023 Annual Research Report
  • [Presentation] 銅抑制剤MBSを用いたCu-Mo選択浮遊選別に関する研究2023

    • Author(s)
      アクバルショー ウルマスゾーダ、グディ パンディ ウィスヌ スーヤンタラ、三木 一、越智 大司、青木 悠二、浦紅美花、ダニヤロフ ベルダック、エスカ プトラ ドゥイタマ、笹木 圭子、平島 剛
    • Organizer
      資源・素材2023(松山)
    • Related Report
      2023 Annual Research Report
  • [Presentation] 輝銅鉱・輝水鉛鉱の選択浮遊選別における二亜硫酸ナトリウム及び各種捕収材の影響に関する研究2023

    • Author(s)
      中尾 亮太、Suyantara Gde Pandhe Wisnu、三木 一、笹木 圭子、青木 悠二、越智 大司、柳澤 悟、滝田 絵理、浦 紅美花
    • Organizer
      資源・素材2023(松山)
    • Related Report
      2023 Annual Research Report
  • [Presentation] Study of pyrite depression for producing a high-grade copper concentrate from a complex copper ore2023

    • Author(s)
      Gde Pandhe Wisnu Suyantara, Akbarshokh Ulmaszoda, Hajime Miki, Keiko Sasaki, Taisuke Sakakibara, Hisatoshi Furuya, Satoru Okubo
    • Organizer
      資源・素材2023(松山)
    • Related Report
      2023 Annual Research Report
  • [Presentation] Selective Flotation of Fluorite from Calcite using Sodium Humate as a Depressant2023

    • Author(s)
      Efendi Rihan、Farahat Mohsen、Miki Hajime、Wisnu Suyantara GDE Pandhe、Sasaki Keiko
    • Organizer
      資源・素材2023年度 春季大会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Investigation of sodium sulfite as a depressant for selective flotation of copper sulfide minerals from arsenic-bearing copper mineral2023

    • Author(s)
      Gde Pandhe Wisnu Suyantara, Hajime Miki, Tsuyoshi Hirajima, Keiko Sasaki, Daishi Ochi, Yuji Aoki
    • Organizer
      資源・素材2023年度 春季大会
    • Related Report
      2022 Annual Research Report
  • [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
      International Symposium on Earth Science and Technology 2022
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Study on the effect of sodium metabisulfite on selective flotation of chalcopyrite and molybdenite with seawater2022

    • Author(s)
      R. OGI, G.P.W. SUYANTARA, H. MIKI, T. HIRAJIMA, K. SASAKI Y. AOKI, D. OCHI
    • Organizer
      International Symposium on Earth Science and Technology 2022
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Effect of a sulfite reagent on floatability of chalcopyrite and enargite2022

    • Author(s)
      G.P.W. SUYANTARA, H. MIKI, K. SASAKI, T. HIRAJIMA, Y. AOKI, Y.TANAKA
    • Organizer
      XXXI International Mineral Processing Congress (IMPC 2022)
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [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] Estimation of Cu and Mo recoveries of five type ores composite in seawater flotation2022

    • Author(s)
      Y. TANAKA, T. HIRAJIMA, H. MIKI, G.P.W. SUYANTARA
    • 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] 海水を用いた黄銅鉱・輝水鉛鉱の選択浮遊選別に及ぼす粒子径及びニ亜硫酸ナトリウムの影響に関する研究2022

    • Author(s)
      荻良志、Gde Pandhe Wisnu Suyantara、三木一、平島剛、笹木圭子、青木悠二、越智大司
    • Organizer
      MMIJ九州支部研究発表会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 海水を用いた黄銅鉱・輝水鉛鉱の選択浮遊選別に及ぼすニ亜硫酸ナトリウムの影響に関する研究2022

    • Author(s)
      荻良志、Gde Pandhe Wisnu Suyantara、三木一、平島剛、笹木圭子、青木悠二、越智大司
    • Organizer
      資源・素材2022(福岡)
    • Related Report
      2022 Annual Research Report

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Published: 2022-04-19   Modified: 2025-06-20  

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