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Extraction of copper from complex carbonaceous sulfide ore by direct high-pressure leaching
http://hdl.handle.net/10295/00006081
http://hdl.handle.net/10295/000060811c11b8a8-6409-4ff5-b249-e26422edce8e
名前 / ファイル | ライセンス | アクション |
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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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× Magwaneng, Refilwe S.× Sagami, Riku× Haga, Kazutoshi× Batnasan, Altansukh× Aoki, Shogo× Kawasaki, Takashi× Matsuoka, Hidekazu× Mitsuhashi, Kohei× Kawata, Masanobu× 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 |
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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/). |