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  1. 40 国際資源学研究科・国際資源学部
  2. 40A 学術誌論文
  3. 40A1 雑誌掲載論文

Extraction of copper from complex carbonaceous sulfide ore by direct high-pressure leaching

http://hdl.handle.net/10295/00006081
http://hdl.handle.net/10295/00006081
1c11b8a8-6409-4ff5-b249-e26422edce8e
名前 / ファイル ライセンス アクション
kokuA_2022_3.pdf kokuA_2022_3.pdf (4.9 MB)
Item type 学術雑誌論文 / Journal Article(1)
公開日 2022-10-22
タイトル
タイトル Extraction of copper from complex carbonaceous sulfide ore by direct high-pressure leaching
言語 en
言語
言語 eng
主題
主題Scheme Other
主題 Carbonaceous sulfide ore
主題
主題Scheme Other
主題 Chalcopyrite
主題
主題Scheme Other
主題 High-pressure leaching
主題
主題Scheme Other
主題 Copper
主題
主題Scheme Other
主題 Iron
主題
主題Scheme Other
主題 NaSH sulfidization
資源タイプ
資源タイプ識別子 http://purl.org/coar/resource_type/c_6501
資源タイプ journal article
アクセス権
アクセス権 open access
アクセス権URI http://purl.org/coar/access_right/c_abf2
作成者 Godirilwe, Labone Lorraine

× Godirilwe, Labone Lorraine

en Godirilwe, Labone Lorraine

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Magwaneng, Refilwe S.

× Magwaneng, Refilwe S.

en Magwaneng, Refilwe S.

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Sagami, Riku

× Sagami, Riku

en Sagami, Riku

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Haga, Kazutoshi

× Haga, Kazutoshi

en Haga, Kazutoshi

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Batnasan, Altansukh

× Batnasan, Altansukh

en Batnasan, Altansukh

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Aoki, Shogo

× Aoki, Shogo

en Aoki, Shogo

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Kawasaki, Takashi

× Kawasaki, Takashi

en Kawasaki, Takashi

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Matsuoka, Hidekazu

× Matsuoka, Hidekazu

en Matsuoka, Hidekazu

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Mitsuhashi, Kohei

× Mitsuhashi, Kohei

en Mitsuhashi, Kohei

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Kawata, Masanobu

× Kawata, Masanobu

en Kawata, Masanobu

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Shibayama, Atsushi

× Shibayama, Atsushi

en Shibayama, Atsushi

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内容記述
内容記述タイプ Abstract
内容記述 The increase of impurities and complexity of copper ores are among the recent challenges in the mining industry. Complex carbonaceous sulfide ores are extremely difficult to treat due to their mineralogical complexity and impurities of organic carbon and carbonates. This study focuses on the development of a hydrometallurgical process for efficient copper extraction from complex carbonaceous sulfide ore which contains chalcopyrite, carbonates (dolomite and calcite), and carbonaceous gangue minerals. Characterization of the ore sample and leach residues was conducted using XRD and EPMA analysis, while ICP-OES was used for the determination of total dissolved metals in solution. High-pressure leaching of complex carbonaceous sulfide ore in oxygenated sulfuric acid solution was performed and the influence of leaching parameters such as sulfuric acid concentration, temperature, total pressure, and pulp density was studied. The extraction of copper increased with increasing temperature, sulfuric acid concentration, and total pressure. On the other hand, an increase in pulp density resulted in a decline in copper extraction due to an increased slurry viscosity and resistance in the diffusive mass transfer of reactants. Selective dissolution of copper from iron can be achieved by controlling free acidity in the pregnant leach solution (PLS). Under these leaching conditions: 100 g/L, 1 M H2SO4, 160 ◦C, 1.0 MPa total pressure, the highest copper and iron extractions achieved were 97.55% and 95.37%, respectively. Precipitation of copper from the PLS by NaSH sulfidization was investigated and more than 99.9% of copper was recovered at a Cu: NaSH molar ratio of 1:1.8.
言語 en
出版タイプ
出版タイプ VoR
出版タイプResource http://purl.org/coar/version/c_970fb48d4fbd8a85
書誌情報 en : Minerals Engineering

巻 173, 発行日 2021
収録物識別子
収録物識別子タイプ ISSN
収録物識別子 08926875
出版者
出版者 Elsevier Ltd
関連情報
関連タイプ isIdenticalTo
識別子タイプ DOI
関連識別子 https://doi.org/10.1016/j.mineng.2021.107181
権利情報
権利情報 © 2021 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license(http://creativecommons.org/licenses/by-nc-nd/4.0/).
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