Investigation of reagents for selective flotation on chalcopyrite and molybdenite

Hajime Miki, T. Hirajima, Y. Muta, G. P.W. Suyantara, Keiko Sasaki

研究成果: 著書/レポートタイプへの貢献会議での発言

抄録

Selective flotation of chalcopyrite and molybdenite is continuing problem since its selectivity is not perfect and current NaHS process needs closed system flotation plant because of hydrogen sulfide emission on acidic condition. Some alternative additives investigated as chalcopyrite became hydrophilic and molybdenite kept hydrophobic. XPS analysis indicated chalcopyrite became hydrophilic since iron and copper sulphate, hydroxide was covered on the surface whereas molybdenite kept hydrophobic since only molybdenite can be seen. Flotation experiments of chalcopyrite and molybdenite mixture sample indicated excellent separation that 95% of molybdenite can be recovered as froth and 93% of chalcopyrite can be recovered as sink. Flotation experiments with real bulk flotation concentration indicated similar separation result compared with current NaHS additive system. Possible mechanisms and detailed phenomenon were investigated based on the surface analysis and thermodynamic calculation etc. this alternative additive is easy to handle compared with NaHS since it does not emit effluent gas and commercially preferable.

元の言語英語
ホスト出版物のタイトルIMPC 2018 - 29th International Mineral Processing Congress
出版者Canadian Institute of Mining, Metallurgy and Petroleum
ページ1854-1861
ページ数8
ISBN(電子版)9787030227119
出版物ステータス出版済み - 1 1 2019
イベント29th International Mineral Processing Congress, IMPC 2018 - Moscow, ロシア連邦
継続期間: 9 17 20189 21 2018

出版物シリーズ

名前IMPC 2018 - 29th International Mineral Processing Congress

その他

その他29th International Mineral Processing Congress, IMPC 2018
ロシア連邦
Moscow
期間9/17/189/21/18

Fingerprint

molybdenite
Flotation
chalcopyrite
Copper Sulfate
Hydrogen Sulfide
Surface analysis
Hydrogen sulfide
Effluents
hydrogen sulfide
Iron
X ray photoelectron spectroscopy
X-ray spectroscopy
Gases
Experiments
hydroxide
flotation
Thermodynamics
Copper
thermodynamics
experiment

All Science Journal Classification (ASJC) codes

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

これを引用

Miki, H., Hirajima, T., Muta, Y., Suyantara, G. P. W., & Sasaki, K. (2019). Investigation of reagents for selective flotation on chalcopyrite and molybdenite. : IMPC 2018 - 29th International Mineral Processing Congress (pp. 1854-1861). (IMPC 2018 - 29th International Mineral Processing Congress). Canadian Institute of Mining, Metallurgy and Petroleum.

Investigation of reagents for selective flotation on chalcopyrite and molybdenite. / Miki, Hajime; Hirajima, T.; Muta, Y.; Suyantara, G. P.W.; Sasaki, Keiko.

IMPC 2018 - 29th International Mineral Processing Congress. Canadian Institute of Mining, Metallurgy and Petroleum, 2019. p. 1854-1861 (IMPC 2018 - 29th International Mineral Processing Congress).

研究成果: 著書/レポートタイプへの貢献会議での発言

Miki, H, Hirajima, T, Muta, Y, Suyantara, GPW & Sasaki, K 2019, Investigation of reagents for selective flotation on chalcopyrite and molybdenite. : IMPC 2018 - 29th International Mineral Processing Congress. IMPC 2018 - 29th International Mineral Processing Congress, Canadian Institute of Mining, Metallurgy and Petroleum, pp. 1854-1861, 29th International Mineral Processing Congress, IMPC 2018, Moscow, ロシア連邦, 9/17/18.
Miki H, Hirajima T, Muta Y, Suyantara GPW, Sasaki K. Investigation of reagents for selective flotation on chalcopyrite and molybdenite. : IMPC 2018 - 29th International Mineral Processing Congress. Canadian Institute of Mining, Metallurgy and Petroleum. 2019. p. 1854-1861. (IMPC 2018 - 29th International Mineral Processing Congress).
Miki, Hajime ; Hirajima, T. ; Muta, Y. ; Suyantara, G. P.W. ; Sasaki, Keiko. / Investigation of reagents for selective flotation on chalcopyrite and molybdenite. IMPC 2018 - 29th International Mineral Processing Congress. Canadian Institute of Mining, Metallurgy and Petroleum, 2019. pp. 1854-1861 (IMPC 2018 - 29th International Mineral Processing Congress).
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abstract = "Selective flotation of chalcopyrite and molybdenite is continuing problem since its selectivity is not perfect and current NaHS process needs closed system flotation plant because of hydrogen sulfide emission on acidic condition. Some alternative additives investigated as chalcopyrite became hydrophilic and molybdenite kept hydrophobic. XPS analysis indicated chalcopyrite became hydrophilic since iron and copper sulphate, hydroxide was covered on the surface whereas molybdenite kept hydrophobic since only molybdenite can be seen. Flotation experiments of chalcopyrite and molybdenite mixture sample indicated excellent separation that 95{\%} of molybdenite can be recovered as froth and 93{\%} of chalcopyrite can be recovered as sink. Flotation experiments with real bulk flotation concentration indicated similar separation result compared with current NaHS additive system. Possible mechanisms and detailed phenomenon were investigated based on the surface analysis and thermodynamic calculation etc. this alternative additive is easy to handle compared with NaHS since it does not emit effluent gas and commercially preferable.",
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