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Application of carrier-microencapsulation for coal flotation to remove pyrite and to suppress acid mine drainage formation at tailing dam

Research Project

Project/Area Number 20360401
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Earth system and resources enginnering
Research InstitutionHokkaido University

Principal Investigator

HIROYOSHI Naoki  Hokkaido University, 大学院・工学研究院, 教授 (50250486)

Co-Investigator(Kenkyū-buntansha) TSUNEKAWA Masami  北海道大学, 大学院・工学研究院, 教授 (40002026)
ITO Mayumi  北海道大学, 大学院・工学研究院, 准教授 (10339690)
IGARASHI Toshifumi  北海道大学, 大学院・工学研究院, 教授 (90301944)
FUKUSHIMA Masami  北海道大学, 大学院・工学研究院, 准教授 (40344113)
Project Period (FY) 2008 – 2010
Project Status Completed (Fiscal Year 2010)
Budget Amount *help
¥17,940,000 (Direct Cost: ¥13,800,000、Indirect Cost: ¥4,140,000)
Fiscal Year 2010: ¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2009: ¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2008: ¥9,360,000 (Direct Cost: ¥7,200,000、Indirect Cost: ¥2,160,000)
Keywords石炭 / 黄鉄鉱 / カテコール / 薄膜 / 脱硫 / 鉱山酸性汚濁水 / Si / Ti / 薄膜形成 / サイクリックボルタンメトリ / 酸化還元
Research Abstract

Pyrite associated with coal generates SOx causing acid rain during coal combustion. In coal preparation, pyrite is rejected as a gangue mineral using the physical separation technique such as froth flotation and wasted into tailing pond. In the froth flotation, pyrite is frequently entrapped in froth together with valuable mineral due to its hydrophobic nature. Formation of acid mine drainage due to the air-oxidation of pyrite in tailing pond is also a serious problem. In the present study, carrier-microencapsulation (CME) is proposed to suppress both the floatability and oxidation of pyrite in coal preparation.

Report

(4 results)
  • 2010 Annual Research Report   Final Research Report ( PDF )
  • 2009 Annual Research Report
  • 2008 Annual Research Report
  • Research Products

    (12 results)

All 2011 2010 2009 2008

All Journal Article (4 results) (of which Peer Reviewed: 4 results) Presentation (8 results)

  • [Journal Article] Suppression of floatability of pyrite in coal processing by carrier microencapsulation2011

    • Author(s)
      Rani Kumari Thakur Jha, Jacqueline Satur, Naoki Hiroyoshi, Mayumi Ito, Masami Tsunekawa
    • Journal Title

      Fuel Processing Technology Volume 92, Issue 5

      Pages: 1032-1036

    • Related Report
      2010 Final Research Report
    • Peer Reviewed
  • [Journal Article] Suppression of floatability of pyrite in coal processing by carrier microencapsulation2011

    • Author(s)
      R.K.T.Jha, J.Satur, N.Hiroyoshi, M.Ito M.Tsunekawa
    • Journal Title

      Fuel Processing Technology

      Volume: 92 Pages: 1032-1036

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Carrier Microencapsulation using Si-Catechol for Suppressing Pyrite Floatability2008

    • Author(s)
      Rani Kumari Thakur Jha, Jacqueline Satur, Naoki Hiroyoshi, Mayumi Ito, Masami Tsunekawa
    • Journal Title

      Minerals Engineering Vol.21, no.12-14

      Pages: 889-893

    • Related Report
      2010 Final Research Report
    • Peer Reviewed
  • [Journal Article] Carrier-microencapsulation Using Si-catechol Complex for suppressing Pyrite Floatability2008

    • Author(s)
      R. K. T. Jha, J. Satur, N. Hiroyoshi, M. Ito and M. Tsunekawa
    • Journal Title

      Mineral Engineering 21

      Pages: 889-893

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Presentation] Carrier Micro Encapsulation (CME) for Suppressing Pyrite Floatability and Oxidation in Coal Preparation2011

    • Author(s)
      R.K.T.Jha, J.Satur, N.Hiroyoshi, M.Ito, M.Tsunekawa
    • Organizer
      25rd International Mineral Processing Congress
    • Place of Presentation
      Brisbane Convention Centre Brisbane, Australia
    • Related Report
      2010 Annual Research Report
  • [Presentation] Application of CME Treatment on the Suppression of Pyrite Floatability and Oxidation in Coal Preparation2010

    • Author(s)
      Jha R.K.T., Satur J., Ito M., Hiroyoshi N., Tsunekawa M.
    • Organizer
      MMIJ, Annual Autumn Meeting of Mining and Materials Processing Institute of Japan
    • Place of Presentation
      Fukuoka, Japan.
    • Related Report
      2010 Final Research Report
  • [Presentation] Carrier Micro Encapsulation (CME) for Suppressing Pyrite Floatability and Oxidation in Coal Preparation2010

    • Author(s)
      Jha R.K.T., Satur J., Ito M., Hiroyoshi N., Tsunekawa M.
    • Organizer
      AUSIMM, International Mineral Processing Congress
    • Place of Presentation
      Brisbane,Australia.
    • Related Report
      2010 Final Research Report
  • [Presentation] 硫化鉱物の浮遊性に及ぼすキャリアマイクロエンカプセレーションの効果2010

    • Author(s)
      広吉直樹,川代晋太郎,Rani Kumari Thakur Jha,恒川昌美,伊藤真由美
    • Organizer
      MMIJ, Annual Spring Meeting of Mining and Materials Processing Institute of Japan
    • Place of Presentation
      Tokyo, Japan.
    • Related Report
      2010 Final Research Report
  • [Presentation] Application of Carrier microencapsulation using Si-catechol Complex for Pyrite Removal from Coal2009

    • Author(s)
      Jha R.K.T., Satur J., Ito M., Hiroyoshi N., Tsunekawa M.
    • Organizer
      KIRR, RRDC, KNCPC, East Asian ResourcesRecycling Technology
    • Place of Presentation
      Jeju Island, South Korea.
    • Related Report
      2010 Final Research Report
  • [Presentation] Carrier microencapsulation (CME) for Coal Preparation, Department of Sustainable Resources Engineering,Hokkaido University2009

    • Author(s)
      Jha R.K.T., Satur J., Ito M., Hiroyoshi N., Tsunekawa M.
    • Organizer
      3rd International Workshop and Conference on Earth Resources Technology
    • Place of Presentation
      Sapporo, Japan.
    • Related Report
      2010 Final Research Report
  • [Presentation] Application of Carrier Microencapsulation using Si-catechol Complex for Pyrite Removal from Coal2009

    • Author(s)
      R.K.Jha, J.Satur, N.Hiroyoshi, M.Ito, M.Tsunekawa
    • Organizer
      10th Int.Symp.East Asian Recycling Technology, 793-796(2009)
    • Place of Presentation
      ラマダプラザチェジュホテル(韓国 済州)
    • Related Report
      2009 Annual Research Report
  • [Presentation] Application of Carrier Microencapsulation using Si and Catechol to Suppress Pyrite Floatability in Coal Production2008

    • Author(s)
      Jha R.K.T., Satur J., Ito M., Hiroyoshi N., Tsunekawa M.
    • Organizer
      MMIJ, Annual Autumn Meeting of Mining and Materials Processing Institute of Japan
    • Place of Presentation
      Sendai, Japan.
    • Related Report
      2010 Final Research Report

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Published: 2008-04-01   Modified: 2016-04-21  

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