Ferrous promoted chalcopyrite leaching

Naoki Hiroyoshi, Hajime Miki, Tsuyoshi Hirajima, Masami Tsunekawa

研究成果: 書籍/レポート タイプへの寄稿会議への寄与

2 被引用数 (Scopus)

抄録

It is generally accepted that ferric ions are effective for leaching chalcopyrite as an oxidant and ferrous ions contribute to the leaching only as a source of the oxidant ferric ions. However, this paper shows that ferrous ions are more useful for leaching chalcopyrite than oxidant ferric ions in sulfuric acid solutions in air at ambient temperatures. Leaching experiments and dissolved oxygen consumption measurements were carried out with a very pure chalcopyrite and 0.001 - 1 mol dm-3 sulfuric acid solutions containing 0 - 0.1 mol dm-3 ferric or ferrous ions at 303 K. Chalcopyrite oxidation with dissolved oxygen was promoted by ferrous ions but suppressed by ferric ions. As a result, the amount of extracted copper was larger with ferrous ions than with ferric ions. Effects of Thiobacillus ferrooxidans on the ferrous promoted chalcopyrite leaching were also investigated and discussed based on the experimental data.

本文言語英語
ホスト出版物のタイトル4th International Conference COPPER 99-COBRE 99
編集者S.K. Young, D.B. Dreisinger, R.P. Hackl, D.G. Dixon, S.K. Young, D.B. Dreisinger, R.P. Hackl, D.G. Dixon
ページ231-246
ページ数16
出版ステータス出版済み - 1999
外部発表はい
イベントFourth International Conference COPPER 99 - COBRE 99 - Phoenix, AZ, 米国
継続期間: 10月 10 199910月 13 1999

出版物シリーズ

名前4th International Conference COPPER 99-COBRE 99
4

その他

その他Fourth International Conference COPPER 99 - COBRE 99
国/地域米国
CityPhoenix, AZ
Period10/10/9910/13/99

!!!All Science Journal Classification (ASJC) codes

  • 工学一般

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