Floatability of molybdenite and chalcopyrite in artificial seawater

Gde Pandhe Wisnu Suyantara, Tsuyoshi Hirajima, Hajime Miki, Keiko Sasaki

研究成果: ジャーナルへの寄稿記事

13 引用 (Scopus)

抄録

Seawater has been reported to depress the floatability of molybdenum in copper-molybdenum (Cu-Mo) flotation circuits under alkaline conditions (pH > 9.5). However, the seawater used in the process contains various minerals and flotation reagents, which make it difficult to investigate the depression mechanism. This paper presents a fundamental study into the effect of artificial seawater as a seawater model solution on the floatability of molybdenite and chalcopyrite, which are the main minerals in the Cu-Mo flotation process. Floatability tests in the absence of flotation reagents (i.e., frothers and collectors) reveal that artificial seawater adversely affects the floatability of molybdenite and chalcopyrite at pH > 9. This phenomenon can be attributed to the adsorption of hydrophilic Mg(OH)2 precipitates formed under alkaline conditions on the mineral surfaces, which increases the surface wettability of the mineral particles, as shown by contact angle measurements and atomic force microscopy (AFM) images. The effect of kerosene as a molybdenite collector has also been investigated to assess its potential in the selective flotation of molybdenite and chalcopyrite in artificial seawater.

元の言語英語
ページ(範囲)117-130
ページ数14
ジャーナルMinerals Engineering
115
DOI
出版物ステータス出版済み - 1 1 2018

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molybdenite
chalcopyrite
Seawater
Flotation
seawater
Minerals
Molybdenum
mineral
molybdenum
atomic force microscopy
wettability
Kerosene
Angle measurement
Contact angle
Wetting
Precipitates
Copper
Atomic force microscopy
flotation
copper

All Science Journal Classification (ASJC) codes

  • Control and Systems Engineering
  • Chemistry(all)
  • Geotechnical Engineering and Engineering Geology
  • Mechanical Engineering

これを引用

Floatability of molybdenite and chalcopyrite in artificial seawater. / Suyantara, Gde Pandhe Wisnu; Hirajima, Tsuyoshi; Miki, Hajime; Sasaki, Keiko.

:: Minerals Engineering, 巻 115, 01.01.2018, p. 117-130.

研究成果: ジャーナルへの寄稿記事

Suyantara, Gde Pandhe Wisnu ; Hirajima, Tsuyoshi ; Miki, Hajime ; Sasaki, Keiko. / Floatability of molybdenite and chalcopyrite in artificial seawater. :: Minerals Engineering. 2018 ; 巻 115. pp. 117-130.
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