Applying analysis of mineral surfaces to predict flotation behavior

H. Matsuoka*, R. Kawarabuki, K. Mitsuhashi, M. Kawata, C. Tokoro, K. Haga, A. Shibayama


研究成果: Conference contribution


The mineral surface characteristic is important for the flotation because it affects the flotation behavior of the mineral. Conventionally, in the flotation process for Cu sulphide ores, the degree of ore floatabilities varies depending on the mineral phase such as chalcopyrite, bornite, or chalcocite. Therefore, mineral surfaces are treated with activators and depressants to control the floatability of target minerals and obtain high recovery performance. There are lots of flotation reagents which have many effects on ores depending on ore characteristics and conditioning methods. For example, sodium hydrosulphide (NaHS) as activator is known to have the effect of re-sulfurizing and activating oxidized surface of chalcocite and bornite. On the other hand, NaHS is reported to depress chalcopyrite floatability. In this study, the evaluation of mineral surfaces was conducted to predict flotation behavior. Activation of Cu minerals (chalcocite, bornite, and chalcopyrite) by NaHS was experimented. The three Cu minerals were treated in two steps. Firstly, they were oxidized in the drying oven. Secondly, they were treated with NaHS solution. After each treatment step, each mineral was measured by contact angle apparatus then analyzed by X-ray photoelectron spectroscopy (XPS). The results of surface characteristics after oxidation and NaHS treatment were utilized to accomplish the study's objective.

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
出版ステータスPublished - 2019
イベント29th International Mineral Processing Congress, IMPC 2018 - Moscow, Russian Federation
継続期間: 2018 9 172018 9 21


名前IMPC 2018 - 29th International Mineral Processing Congress


Other29th International Mineral Processing Congress, IMPC 2018
国/地域Russian Federation

ASJC Scopus subject areas

  • 機械工学
  • 地表過程
  • 地球化学および岩石学
  • 地盤工学および土木地質学


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