Improvement of modeling on the Pidgeon process for magnesium production by introducing the variable thermophysical properties
The variable thermophysical properties were introduced into the coupling model of heat transfer and reduction reaction in the Pidgeon process to improve the accuracy of the numerical calculation. The distribution of temperature and magnesium reduction extent in the briquette layer, and the total mag...
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| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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University of Belgrade, Technical Faculty, Bor
2022-01-01
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| Series: | Journal of Mining and Metallurgy. Section B: Metallurgy |
| Subjects: | |
| Online Access: | http://www.doiserbia.nb.rs/img/doi/1450-5339/2022/1450-53392200026L.pdf |
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| _version_ | 1832573321864019968 |
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| author | Li R.-B. Wang C. Wang Z. Yang P.-X. Xue F. Liu F.-Q. Zhang S.-J. |
| author_facet | Li R.-B. Wang C. Wang Z. Yang P.-X. Xue F. Liu F.-Q. Zhang S.-J. |
| author_sort | Li R.-B. |
| collection | DOAJ |
| description | The variable thermophysical properties were introduced into the coupling model of heat transfer and reduction reaction in the Pidgeon process to improve the accuracy of the numerical calculation. The distribution of temperature and magnesium reduction extent in the briquette layer, and the total magnesium reduction extent in the retort were investigated. The model results show better agreement with those of industrial production. The feature of ‘layer shift’ in the briquette layer during the reduction process was clearly shown. It was shown that the reduction reaction occurs only at a thin interface. The slag layer with lower thermal conductivity of 0.4 W.m-1.K-1 formed during reduction strongly hinders the reaction to move forward within the layers, resulting in the slow magnesium production rate in the Pidgeon process. The improved model can provide a more accurate quantitative prediction for magnesium reduction in the Pidgeon process, which is important for key equipment innovation and the development of new magnesium production techniques. |
| format | Article |
| id | doaj-art-e8979c7c562e467d9e316ea98dd3c685 |
| institution | Kabale University |
| issn | 1450-5339 2217-7175 |
| language | English |
| publishDate | 2022-01-01 |
| publisher | University of Belgrade, Technical Faculty, Bor |
| record_format | Article |
| series | Journal of Mining and Metallurgy. Section B: Metallurgy |
| spelling | doaj-art-e8979c7c562e467d9e316ea98dd3c6852025-02-02T05:14:10ZengUniversity of Belgrade, Technical Faculty, BorJournal of Mining and Metallurgy. Section B: Metallurgy1450-53392217-71752022-01-0158345145910.2298/JMMB220111026L1450-53392200026LImprovement of modeling on the Pidgeon process for magnesium production by introducing the variable thermophysical propertiesLi R.-B.0Wang C.1Wang Z.2Yang P.-X.3Xue F.4Liu F.-Q.5Zhang S.-J.6School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing, ChinaElectric Power Research Institute of State Grid Ningxia Electric Power Company, Yinchuan, ChinaSchool of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing, ChinaHenan Province Industrial Technology Research Institute of Resources and Materials, Zhengzhou University, Zhengzhou, ChinaElectric Power Research Institute of State Grid Ningxia Electric Power Company, Yinchuan, ChinaSchool of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing, ChinaHenan Province Industrial Technology Research Institute of Resources and Materials, Zhengzhou University, Zhengzhou, ChinaThe variable thermophysical properties were introduced into the coupling model of heat transfer and reduction reaction in the Pidgeon process to improve the accuracy of the numerical calculation. The distribution of temperature and magnesium reduction extent in the briquette layer, and the total magnesium reduction extent in the retort were investigated. The model results show better agreement with those of industrial production. The feature of ‘layer shift’ in the briquette layer during the reduction process was clearly shown. It was shown that the reduction reaction occurs only at a thin interface. The slag layer with lower thermal conductivity of 0.4 W.m-1.K-1 formed during reduction strongly hinders the reaction to move forward within the layers, resulting in the slow magnesium production rate in the Pidgeon process. The improved model can provide a more accurate quantitative prediction for magnesium reduction in the Pidgeon process, which is important for key equipment innovation and the development of new magnesium production techniques.http://www.doiserbia.nb.rs/img/doi/1450-5339/2022/1450-53392200026L.pdfmagnesiumpidgeon processnumerical calculationheat transferthermophysical property |
| spellingShingle | Li R.-B. Wang C. Wang Z. Yang P.-X. Xue F. Liu F.-Q. Zhang S.-J. Improvement of modeling on the Pidgeon process for magnesium production by introducing the variable thermophysical properties Journal of Mining and Metallurgy. Section B: Metallurgy magnesium pidgeon process numerical calculation heat transfer thermophysical property |
| title | Improvement of modeling on the Pidgeon process for magnesium production by introducing the variable thermophysical properties |
| title_full | Improvement of modeling on the Pidgeon process for magnesium production by introducing the variable thermophysical properties |
| title_fullStr | Improvement of modeling on the Pidgeon process for magnesium production by introducing the variable thermophysical properties |
| title_full_unstemmed | Improvement of modeling on the Pidgeon process for magnesium production by introducing the variable thermophysical properties |
| title_short | Improvement of modeling on the Pidgeon process for magnesium production by introducing the variable thermophysical properties |
| title_sort | improvement of modeling on the pidgeon process for magnesium production by introducing the variable thermophysical properties |
| topic | magnesium pidgeon process numerical calculation heat transfer thermophysical property |
| url | http://www.doiserbia.nb.rs/img/doi/1450-5339/2022/1450-53392200026L.pdf |
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