A novel optimal formula of nickel extraction: arsenic removal from niccolite by controlling arsenic-containing phases
Objective: Niccolite, a rare nickel arsenide mineral, has emerged as a promising source for nickel extraction. However, its processing is limited and often associated with toxicity concerns. This study aims to search for efficient separation of arsenic during the roasting process of niccolite.Method...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
Frontiers Media S.A.
2023-12-01
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| Series: | Frontiers in Chemistry |
| Subjects: | |
| Online Access: | https://www.frontiersin.org/articles/10.3389/fchem.2023.1290831/full |
| _version_ | 1797401527824941056 |
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| author | Xiaowei Tang Yuehui He Yuehui He |
| author_facet | Xiaowei Tang Yuehui He Yuehui He |
| author_sort | Xiaowei Tang |
| collection | DOAJ |
| description | Objective: Niccolite, a rare nickel arsenide mineral, has emerged as a promising source for nickel extraction. However, its processing is limited and often associated with toxicity concerns. This study aims to search for efficient separation of arsenic during the roasting process of niccolite.Methods: The arsenic-containing phase was optimized through changing the contents of oxygen, additive S, and additive FeS in the system to achieve efficient separation of arsenic during the roasting process of niccolite. Thermodynamic analysis was performed using the equilibrium composition module with HSC Chemistry.Results: The thermodynamic results showed that in direct roasting, the product contained ferric arsenate which immobilized arsenic in the solid phase, increasing the difficulty in separation. In the presence of sulfur, the arsenic may escape completely in the form of gas (As2O3, As4O4, As4O6). The use of FeS as the reductant significantly reduced the residual arsenic content.Conclusion: The FeS reduction in roasting process is an optimal strategy for arsenic removal from niccolite. This provides a novel technique for nickel extraction in industry. |
| first_indexed | 2024-03-09T02:11:23Z |
| format | Article |
| id | doaj.art-160e533cb6fc47e8ac345f0a87a96db2 |
| institution | Directory Open Access Journal |
| issn | 2296-2646 |
| language | English |
| last_indexed | 2024-03-09T02:11:23Z |
| publishDate | 2023-12-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Chemistry |
| spelling | doaj.art-160e533cb6fc47e8ac345f0a87a96db22023-12-07T09:04:45ZengFrontiers Media S.A.Frontiers in Chemistry2296-26462023-12-011110.3389/fchem.2023.12908311290831A novel optimal formula of nickel extraction: arsenic removal from niccolite by controlling arsenic-containing phasesXiaowei Tang0Yuehui He1Yuehui He2Powder Metallurgy Research Institute, Central South University, Changsha, ChinaPowder Metallurgy Research Institute, Central South University, Changsha, ChinaState Key Laboratory of Powder Metallurgy, Central South University, Changsha, ChinaObjective: Niccolite, a rare nickel arsenide mineral, has emerged as a promising source for nickel extraction. However, its processing is limited and often associated with toxicity concerns. This study aims to search for efficient separation of arsenic during the roasting process of niccolite.Methods: The arsenic-containing phase was optimized through changing the contents of oxygen, additive S, and additive FeS in the system to achieve efficient separation of arsenic during the roasting process of niccolite. Thermodynamic analysis was performed using the equilibrium composition module with HSC Chemistry.Results: The thermodynamic results showed that in direct roasting, the product contained ferric arsenate which immobilized arsenic in the solid phase, increasing the difficulty in separation. In the presence of sulfur, the arsenic may escape completely in the form of gas (As2O3, As4O4, As4O6). The use of FeS as the reductant significantly reduced the residual arsenic content.Conclusion: The FeS reduction in roasting process is an optimal strategy for arsenic removal from niccolite. This provides a novel technique for nickel extraction in industry.https://www.frontiersin.org/articles/10.3389/fchem.2023.1290831/fullnickelarsenicniccoliteroastingSFeS |
| spellingShingle | Xiaowei Tang Yuehui He Yuehui He A novel optimal formula of nickel extraction: arsenic removal from niccolite by controlling arsenic-containing phases Frontiers in Chemistry nickel arsenic niccolite roasting S FeS |
| title | A novel optimal formula of nickel extraction: arsenic removal from niccolite by controlling arsenic-containing phases |
| title_full | A novel optimal formula of nickel extraction: arsenic removal from niccolite by controlling arsenic-containing phases |
| title_fullStr | A novel optimal formula of nickel extraction: arsenic removal from niccolite by controlling arsenic-containing phases |
| title_full_unstemmed | A novel optimal formula of nickel extraction: arsenic removal from niccolite by controlling arsenic-containing phases |
| title_short | A novel optimal formula of nickel extraction: arsenic removal from niccolite by controlling arsenic-containing phases |
| title_sort | novel optimal formula of nickel extraction arsenic removal from niccolite by controlling arsenic containing phases |
| topic | nickel arsenic niccolite roasting S FeS |
| url | https://www.frontiersin.org/articles/10.3389/fchem.2023.1290831/full |
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