Selective flotation of chalcopyrite and molybdenite by surface oxidation

Tsuyoshi Hirajima, Masanori Mori, Osamu Ichikawa, Keiko Sasaki, Hajime Miki, Mitsuru Sawada

研究成果: 会議への寄与タイプ論文

抄録

For pretreatment of selective flotation, surface oxidation of chalcopyrite and molybdenite was applied by oxygen plasma then the minerals were washed by solution at pH 9 with oxygen bubbling. Surface characteristics of these minerals were investigated with AFM, XPS, zeta potential and contact angle measurements. Contact angle of chalcopyrite and molybdenite decreased a lot by plasma treatment. When they were washed with pH 9 solution with oxygen bubbling, contact angle of molybdenite increased whereas chalcopyrite one kept low. Adhesion force measurements indicated similar behavior. Result of flotation experiments indicated low recovery of both chalcopyrite and molybdenite after plasma treatment and only molybdenite recovery became higher after washing. Selective flotation of chalcopyrite and molybdenite could be achieved with this process. Possible mechanism of selective flotation was proposed from the results of XPS, AFM, etc.

元の言語英語
出版物ステータス出版済み - 1 1 2014
イベント27th International Mineral Processing Congress, IMPC 2014 - Santiago, チリ
継続期間: 10 20 201410 24 2014

その他

その他27th International Mineral Processing Congress, IMPC 2014
チリ
Santiago
期間10/20/1410/24/14

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molybdenite
Flotation
chalcopyrite
Contact angle
oxidation
Oxidation
Plasmas
Oxygen
Minerals
X ray photoelectron spectroscopy
plasma
Recovery
oxygen
X-ray spectroscopy
Force measurement
Zeta potential
Angle measurement
Washing
Adhesion
mineral

All Science Journal Classification (ASJC) codes

  • Earth-Surface Processes
  • Geochemistry and Petrology
  • Geotechnical Engineering and Engineering Geology
  • Mechanical Engineering

これを引用

Hirajima, T., Mori, M., Ichikawa, O., Sasaki, K., Miki, H., & Sawada, M. (2014). Selective flotation of chalcopyrite and molybdenite by surface oxidation. 論文発表場所 27th International Mineral Processing Congress, IMPC 2014, Santiago, チリ.

Selective flotation of chalcopyrite and molybdenite by surface oxidation. / Hirajima, Tsuyoshi; Mori, Masanori; Ichikawa, Osamu; Sasaki, Keiko; Miki, Hajime; Sawada, Mitsuru.

2014. 論文発表場所 27th International Mineral Processing Congress, IMPC 2014, Santiago, チリ.

研究成果: 会議への寄与タイプ論文

Hirajima, T, Mori, M, Ichikawa, O, Sasaki, K, Miki, H & Sawada, M 2014, 'Selective flotation of chalcopyrite and molybdenite by surface oxidation', 論文発表場所 27th International Mineral Processing Congress, IMPC 2014, Santiago, チリ, 10/20/14 - 10/24/14.
Hirajima T, Mori M, Ichikawa O, Sasaki K, Miki H, Sawada M. Selective flotation of chalcopyrite and molybdenite by surface oxidation. 2014. 論文発表場所 27th International Mineral Processing Congress, IMPC 2014, Santiago, チリ.
Hirajima, Tsuyoshi ; Mori, Masanori ; Ichikawa, Osamu ; Sasaki, Keiko ; Miki, Hajime ; Sawada, Mitsuru. / Selective flotation of chalcopyrite and molybdenite by surface oxidation. 論文発表場所 27th International Mineral Processing Congress, IMPC 2014, Santiago, チリ.
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AU - Miki, Hajime

AU - Sawada, Mitsuru

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