Computational modeling of anodic current distribution and anode shape change in aluminium reduction cells
In aluminium reduction cells, the profile of a new carbon anode changes with time before reaching a steady state shape, since the anode consumption rate, depending on the current density normal to anode surfaces, varies from one region to another. In this paper, a two-dimension model based...
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| Format: | Article |
| Language: | English |
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University of Belgrade, Technical Faculty, Bor
2015-01-01
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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/1450-5339/2015/1450-53391500006X.pdf |
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| _version_ | 1832557855705661440 |
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| author | Xu Y. Li J. Zhang H. Lai Y. |
| author_facet | Xu Y. Li J. Zhang H. Lai Y. |
| author_sort | Xu Y. |
| collection | DOAJ |
| description | In aluminium reduction cells, the profile of a new carbon anode changes with
time before reaching a steady state shape, since the anode consumption rate,
depending on the current density normal to anode surfaces, varies from one
region to another. In this paper, a two-dimension model based on Laplace
equation and Tafel equation was built up to calculate the secondary current
distribution, and the shift of anode shape with time was simulated with
arbitrary Lagrangian-Eulerian method. The time it takes to reach the steady
shape for the anode increases with the enlargement of the width of the
channels between the anodes or between the anode and the sidewall. This time
can be shortened by making a sloped bottom or cutting off the lower corners
of the new anode. Forming two slots in the bottom surface increases the
anodic current density at the underside of the anode, but leads to the
enlargement of the current at the side of the anode. |
| format | Article |
| id | doaj-art-c33cbc1e65164344b161880ae34d059d |
| institution | Kabale University |
| issn | 1450-5339 2217-7175 |
| language | English |
| publishDate | 2015-01-01 |
| publisher | University of Belgrade, Technical Faculty, Bor |
| record_format | Article |
| series | Journal of Mining and Metallurgy. Section B: Metallurgy |
| spelling | doaj-art-c33cbc1e65164344b161880ae34d059d2025-02-03T01:58:53ZengUniversity of Belgrade, Technical Faculty, BorJournal of Mining and Metallurgy. Section B: Metallurgy1450-53392217-71752015-01-0151171510.2298/JMMB140223006X1450-53391500006XComputational modeling of anodic current distribution and anode shape change in aluminium reduction cellsXu Y.0Li J.1Zhang H.2Lai Y.3Central South University, School of Metallurgy and Environment, Changsha, Hunan, ChinaCentral South University, School of Metallurgy and Environment, Changsha, Hunan, ChinaCentral South University, School of Metallurgy and Environment, Changsha, Hunan, ChinaCentral South University, School of Metallurgy and Environment, Changsha, Hunan, ChinaIn aluminium reduction cells, the profile of a new carbon anode changes with time before reaching a steady state shape, since the anode consumption rate, depending on the current density normal to anode surfaces, varies from one region to another. In this paper, a two-dimension model based on Laplace equation and Tafel equation was built up to calculate the secondary current distribution, and the shift of anode shape with time was simulated with arbitrary Lagrangian-Eulerian method. The time it takes to reach the steady shape for the anode increases with the enlargement of the width of the channels between the anodes or between the anode and the sidewall. This time can be shortened by making a sloped bottom or cutting off the lower corners of the new anode. Forming two slots in the bottom surface increases the anodic current density at the underside of the anode, but leads to the enlargement of the current at the side of the anode.http://www.doiserbia.nb.rs/img/doi/1450-5339/2015/1450-53391500006X.pdfaluminium reduction cellsecondary current distributionanode consumptionanode shape |
| spellingShingle | Xu Y. Li J. Zhang H. Lai Y. Computational modeling of anodic current distribution and anode shape change in aluminium reduction cells Journal of Mining and Metallurgy. Section B: Metallurgy aluminium reduction cell secondary current distribution anode consumption anode shape |
| title | Computational modeling of anodic current distribution and anode shape change in aluminium reduction cells |
| title_full | Computational modeling of anodic current distribution and anode shape change in aluminium reduction cells |
| title_fullStr | Computational modeling of anodic current distribution and anode shape change in aluminium reduction cells |
| title_full_unstemmed | Computational modeling of anodic current distribution and anode shape change in aluminium reduction cells |
| title_short | Computational modeling of anodic current distribution and anode shape change in aluminium reduction cells |
| title_sort | computational modeling of anodic current distribution and anode shape change in aluminium reduction cells |
| topic | aluminium reduction cell secondary current distribution anode consumption anode shape |
| url | http://www.doiserbia.nb.rs/img/doi/1450-5339/2015/1450-53391500006X.pdf |
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