High efficiency extractions of V, Cr, Ti, Fe and Mn from vanadium slag by microwave heating
The vanadium slag (V-slag) is generated from smelting vanadium titanomagnetite ore, which contains valuable elements, such as V, Ti, Cr, Fe, and Mn. The traditional methods were mainly focused on the extractions of V and Cr by oxidation or reduction processes. In the present work, chlorination metho...
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University of Belgrade, Technical Faculty, Bor
2021-01-01
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| Series: | Journal of Mining and Metallurgy. Section B: Metallurgy |
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| Online Access: | http://www.doiserbia.nb.rs/img/doi/1450-5339/2021/1450-53392100023T.pdf |
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| _version_ | 1832572142307246080 |
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| author | Tan B. Wu S. Wang L.-J. Chou K.-C. |
| author_facet | Tan B. Wu S. Wang L.-J. Chou K.-C. |
| author_sort | Tan B. |
| collection | DOAJ |
| description | The vanadium slag (V-slag) is generated from smelting vanadium titanomagnetite ore, which contains valuable elements, such as V, Ti, Cr, Fe, and Mn. The traditional methods were mainly focused on the extractions of V and Cr by oxidation or reduction processes. In the present work, chlorination method was adopted to keep the valence state of each element in original state. In order to speed up the diffusion of elements and reduce volatility of molten salt, microwave heating was examined in the current paper. The results indicated that it only took 30 min to chlorinate V-slag at 800 °C, and the chlorination ratios of V, Cr, Mn, Fe, and Ti reached to 82.67%, 75.82%, 92.96%, 91.66%, and 63.14%, respectively. Compared with the results by conventional heating for 8 h, this extraction rate by microwave heating showed greater advantages. In addition, microwave heating effectively reduced volatilization of AlCl3 by shortening the reaction time. The volatilization ratio of AlCl3 in this microwave heating was 3.92% instead of 8.97% in conventional heating (1h). The mechanism of efficient chlorination can be summarized as the enhancement of ions diffusion process and enhanced chemical reaction due to local high temperature. |
| format | Article |
| id | doaj-art-7abfba3b3b7f4193aafb79a0513b933f |
| institution | Kabale University |
| issn | 1450-5339 2217-7175 |
| language | English |
| publishDate | 2021-01-01 |
| publisher | University of Belgrade, Technical Faculty, Bor |
| record_format | Article |
| series | Journal of Mining and Metallurgy. Section B: Metallurgy |
| spelling | doaj-art-7abfba3b3b7f4193aafb79a0513b933f2025-02-02T11:53:26ZengUniversity of Belgrade, Technical Faculty, BorJournal of Mining and Metallurgy. Section B: Metallurgy1450-53392217-71752021-01-0157227127710.2298/JMMB190827023T1450-53392100023THigh efficiency extractions of V, Cr, Ti, Fe and Mn from vanadium slag by microwave heatingTan B.0Wu S.1Wang L.-J.2Chou K.-C.3Collaborative Innovation Center of Steel Technology, University of Science and Technology Beijing, Beijing, ChinaCollaborative Innovation Center of Steel Technology, University of Science and Technology Beijing, Beijing, ChinaCollaborative Innovation Center of Steel Technology, University of Science and Technology Beijing, Beijing, China + State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, Beijing, ChinaCollaborative Innovation Center of Steel Technology, University of Science and Technology Beijing, Beijing, China + State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, Beijing, ChinaThe vanadium slag (V-slag) is generated from smelting vanadium titanomagnetite ore, which contains valuable elements, such as V, Ti, Cr, Fe, and Mn. The traditional methods were mainly focused on the extractions of V and Cr by oxidation or reduction processes. In the present work, chlorination method was adopted to keep the valence state of each element in original state. In order to speed up the diffusion of elements and reduce volatility of molten salt, microwave heating was examined in the current paper. The results indicated that it only took 30 min to chlorinate V-slag at 800 °C, and the chlorination ratios of V, Cr, Mn, Fe, and Ti reached to 82.67%, 75.82%, 92.96%, 91.66%, and 63.14%, respectively. Compared with the results by conventional heating for 8 h, this extraction rate by microwave heating showed greater advantages. In addition, microwave heating effectively reduced volatilization of AlCl3 by shortening the reaction time. The volatilization ratio of AlCl3 in this microwave heating was 3.92% instead of 8.97% in conventional heating (1h). The mechanism of efficient chlorination can be summarized as the enhancement of ions diffusion process and enhanced chemical reaction due to local high temperature.http://www.doiserbia.nb.rs/img/doi/1450-5339/2021/1450-53392100023T.pdfvanadium slagmicrowave heatingmolten salthigh efficiency chlorination |
| spellingShingle | Tan B. Wu S. Wang L.-J. Chou K.-C. High efficiency extractions of V, Cr, Ti, Fe and Mn from vanadium slag by microwave heating Journal of Mining and Metallurgy. Section B: Metallurgy vanadium slag microwave heating molten salt high efficiency chlorination |
| title | High efficiency extractions of V, Cr, Ti, Fe and Mn from vanadium slag by microwave heating |
| title_full | High efficiency extractions of V, Cr, Ti, Fe and Mn from vanadium slag by microwave heating |
| title_fullStr | High efficiency extractions of V, Cr, Ti, Fe and Mn from vanadium slag by microwave heating |
| title_full_unstemmed | High efficiency extractions of V, Cr, Ti, Fe and Mn from vanadium slag by microwave heating |
| title_short | High efficiency extractions of V, Cr, Ti, Fe and Mn from vanadium slag by microwave heating |
| title_sort | high efficiency extractions of v cr ti fe and mn from vanadium slag by microwave heating |
| topic | vanadium slag microwave heating molten salt high efficiency chlorination |
| url | http://www.doiserbia.nb.rs/img/doi/1450-5339/2021/1450-53392100023T.pdf |
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