Floatability of molybdenite and chalcopyrite in artificial seawater

研究成果: ジャーナルへの寄稿学術誌査読

60 被引用数 (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.

本文言語英語
ページ(範囲)117-130
ページ数14
ジャーナルMinerals Engineering
115
DOI
出版ステータス出版済み - 1月 2018

!!!All Science Journal Classification (ASJC) codes

  • 制御およびシステム工学
  • 化学一般
  • 地盤工学および土木地質学
  • 機械工学

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