Kinetics of extracting magnesium from prefabricated pellets by silicothermic process under flowing argon atmosphere
The Pidgeon process is the main extraction method of magnesium, but its continuous production cannot be achieved due to the switch between vacuum and atmospheric pressure. Therefore, it is vital to realize continuous extraction of magnesium under atmospheric pressure. In this paper, the process of e...
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| Format: | Article |
| Language: | English |
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University of Belgrade, Technical Faculty, Bor
2020-01-01
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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/1450-5339/2020/1450-53392000031G.pdf |
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| author | Guo J.-H. Fu D.-X. Han J.-B. Ji Z.-H. Dou Z.-H. Zhang T.-A. |
| author_facet | Guo J.-H. Fu D.-X. Han J.-B. Ji Z.-H. Dou Z.-H. Zhang T.-A. |
| author_sort | Guo J.-H. |
| collection | DOAJ |
| description | The Pidgeon process is the main extraction method of magnesium, but its continuous production cannot be achieved due to the switch between vacuum and atmospheric pressure. Therefore, it is vital to realize continuous extraction of magnesium under atmospheric pressure. In this paper, the process of extracting magnesium from prefabricated pellets in flowing argon was proposed. The isothermal kinetic analysis of the reduction process was carried out. The results showed that the reduction process was controlled by diffusion process in 1 h, and the apparent activation energy of extracting magnesium from prefabricated pellets in flowing argon was 218.75 kJ/mol. Then the influence of experimental factors on the reduction rate was explored, including briquetting pressure, carrier gas flow rate, ferrosilicon content, reaction temperature and time. Through analysis and calculation, it was concluded that the main control step of diffusion process was silicon diffusion. |
| format | Article |
| id | doaj-art-4078604a8479420fac9f2090615e0ef5 |
| institution | Kabale University |
| issn | 1450-5339 2217-7175 |
| language | English |
| publishDate | 2020-01-01 |
| publisher | University of Belgrade, Technical Faculty, Bor |
| record_format | Article |
| series | Journal of Mining and Metallurgy. Section B: Metallurgy |
| spelling | doaj-art-4078604a8479420fac9f2090615e0ef52025-02-02T16:31:02ZengUniversity of Belgrade, Technical Faculty, BorJournal of Mining and Metallurgy. Section B: Metallurgy1450-53392217-71752020-01-0156337938610.2298/JMMB200712031G1450-53392000031GKinetics of extracting magnesium from prefabricated pellets by silicothermic process under flowing argon atmosphereGuo J.-H.0Fu D.-X.1Han J.-B.2Ji Z.-H.3Dou Z.-H.4Zhang T.-A.5School of Metallurgy, Northeastern University, Shenyang, China + Key Laboratory for Ecological Utilization of Multimetallic Mineral (Ministry of Education), Northeastern University, Shenyang, ChinaSchool of Metallurgy, Northeastern University, Shenyang, China + Key Laboratory for Ecological Utilization of Multimetallic Mineral (Ministry of Education), Northeastern University, Shenyang, ChinaSchool of Metallurgy, Northeastern University, Shenyang, China + Key Laboratory for Ecological Utilization of Multimetallic Mineral (Ministry of Education), Northeastern University, Shenyang, ChinaSchool of Metallurgy, Northeastern University, Shenyang, China + Key Laboratory for Ecological Utilization of Multimetallic Mineral (Ministry of Education), Northeastern University, Shenyang, ChinaSchool of Metallurgy, Northeastern University, Shenyang, China + Key Laboratory for Ecological Utilization of Multimetallic Mineral (Ministry of Education), Northeastern University, Shenyang, ChinaSchool of Metallurgy, Northeastern University, Shenyang, China + Key Laboratory for Ecological Utilization of Multimetallic Mineral (Ministry of Education), Northeastern University, Shenyang, ChinaThe Pidgeon process is the main extraction method of magnesium, but its continuous production cannot be achieved due to the switch between vacuum and atmospheric pressure. Therefore, it is vital to realize continuous extraction of magnesium under atmospheric pressure. In this paper, the process of extracting magnesium from prefabricated pellets in flowing argon was proposed. The isothermal kinetic analysis of the reduction process was carried out. The results showed that the reduction process was controlled by diffusion process in 1 h, and the apparent activation energy of extracting magnesium from prefabricated pellets in flowing argon was 218.75 kJ/mol. Then the influence of experimental factors on the reduction rate was explored, including briquetting pressure, carrier gas flow rate, ferrosilicon content, reaction temperature and time. Through analysis and calculation, it was concluded that the main control step of diffusion process was silicon diffusion.http://www.doiserbia.nb.rs/img/doi/1450-5339/2020/1450-53392000031G.pdfisothermal kineticsflowing argonprefabricated pelletdiffusionsilicothermic process |
| spellingShingle | Guo J.-H. Fu D.-X. Han J.-B. Ji Z.-H. Dou Z.-H. Zhang T.-A. Kinetics of extracting magnesium from prefabricated pellets by silicothermic process under flowing argon atmosphere Journal of Mining and Metallurgy. Section B: Metallurgy isothermal kinetics flowing argon prefabricated pellet diffusion silicothermic process |
| title | Kinetics of extracting magnesium from prefabricated pellets by silicothermic process under flowing argon atmosphere |
| title_full | Kinetics of extracting magnesium from prefabricated pellets by silicothermic process under flowing argon atmosphere |
| title_fullStr | Kinetics of extracting magnesium from prefabricated pellets by silicothermic process under flowing argon atmosphere |
| title_full_unstemmed | Kinetics of extracting magnesium from prefabricated pellets by silicothermic process under flowing argon atmosphere |
| title_short | Kinetics of extracting magnesium from prefabricated pellets by silicothermic process under flowing argon atmosphere |
| title_sort | kinetics of extracting magnesium from prefabricated pellets by silicothermic process under flowing argon atmosphere |
| topic | isothermal kinetics flowing argon prefabricated pellet diffusion silicothermic process |
| url | http://www.doiserbia.nb.rs/img/doi/1450-5339/2020/1450-53392000031G.pdf |
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