Investigation of reagents for selective flotation on chalcopyrite and molybdenite

H. Miki, T. Hirajima, Y. Muta, G. P.W. Suyantara, K. Sasaki

研究成果: Chapter in Book/Report/Conference proceedingConference contribution

1 被引用数 (Scopus)

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.

本文言語英語
ホスト出版物のタイトルIMPC 2018 - 29th International Mineral Processing Congress
出版社Canadian Institute of Mining, Metallurgy and Petroleum
ページ1854-1861
ページ数8
ISBN(電子版)9787030227119
出版ステータス出版済み - 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
Countryロシア連邦
CityMoscow
Period9/17/189/21/18

All Science Journal Classification (ASJC) codes

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

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