Investigation of reagents for selective flotation on chalcopyrite and molybdenite

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

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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.

Original languageEnglish
Title of host publicationIMPC 2018 - 29th International Mineral Processing Congress
PublisherCanadian Institute of Mining, Metallurgy and Petroleum
Pages1854-1861
Number of pages8
ISBN (Electronic)9787030227119
Publication statusPublished - Jan 1 2019
Event29th International Mineral Processing Congress, IMPC 2018 - Moscow, Russian Federation
Duration: Sep 17 2018Sep 21 2018

Publication series

NameIMPC 2018 - 29th International Mineral Processing Congress

Other

Other29th International Mineral Processing Congress, IMPC 2018
CountryRussian Federation
CityMoscow
Period9/17/189/21/18

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

Cite this

Miki, H., Hirajima, T., Muta, Y., Suyantara, G. P. W., & Sasaki, K. (2019). Investigation of reagents for selective flotation on chalcopyrite and molybdenite. In 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).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Miki, H, Hirajima, T, Muta, Y, Suyantara, GPW & Sasaki, K 2019, Investigation of reagents for selective flotation on chalcopyrite and molybdenite. in 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, Russian Federation, 9/17/18.
Miki H, Hirajima T, Muta Y, Suyantara GPW, Sasaki K. Investigation of reagents for selective flotation on chalcopyrite and molybdenite. In 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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