Control of Temperature and Aluminum Fluoride Concentration Based on Model Prediction in Aluminum Electrolysis
The temperature and the aluminum fluoride (AlF3) concentration of electrolyte greatly affect the current efficiency and energy consumption in aluminum electrolysis. This paper developed a new kind of algorithm to control the temperature and AlF3 concentration of electrolyte for 300 kA prebake alumin...
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| Format: | Article |
| Language: | English |
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Wiley
2014-01-01
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| Series: | Advances in Materials Science and Engineering |
| Online Access: | http://dx.doi.org/10.1155/2014/181905 |
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| author | Zeng Shuiping Wang Shasha Qu Yaxing |
| author_facet | Zeng Shuiping Wang Shasha Qu Yaxing |
| author_sort | Zeng Shuiping |
| collection | DOAJ |
| description | The temperature and the aluminum fluoride (AlF3) concentration of electrolyte greatly affect the current efficiency and energy consumption in aluminum electrolysis. This paper developed a new kind of algorithm to control the temperature and AlF3 concentration of electrolyte for 300 kA prebake aluminum production cells by altering the setting cell voltage and the AlF3 adding rate. One is liquidus model which can be used to calculate AlF3 concentration of electrolyte by some technical parameters and target superheat and the other is the temperature models which can determine the required cell voltage by the technical parameters and target temperature. Consequently, the AlF3 addition rate can be decided by the AlF3 concentration. The temperature and AlF3 concentration of electrolyte in the production are measured and the differences between the measurement and the corresponding calculation are used as feedback to correct the model. The coefficients in the model are also revised according to the external conditions. This system has been used in an aluminum company for 2 years. Both the temperature and the AlF3 concentration of electrolyte can be controlled as required and the energy consumption of the aluminum production was much decreased. |
| format | Article |
| id | doaj-art-b38df3b1d453472090387112307166c1 |
| institution | Kabale University |
| issn | 1687-8434 1687-8442 |
| language | English |
| publishDate | 2014-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Materials Science and Engineering |
| spelling | doaj-art-b38df3b1d453472090387112307166c12025-02-03T01:31:14ZengWileyAdvances in Materials Science and Engineering1687-84341687-84422014-01-01201410.1155/2014/181905181905Control of Temperature and Aluminum Fluoride Concentration Based on Model Prediction in Aluminum ElectrolysisZeng Shuiping0Wang Shasha1Qu Yaxing2North China University of Technology, Beijing 100144, ChinaNorth China University of Technology, Beijing 100144, ChinaNorth China University of Technology, Beijing 100144, ChinaThe temperature and the aluminum fluoride (AlF3) concentration of electrolyte greatly affect the current efficiency and energy consumption in aluminum electrolysis. This paper developed a new kind of algorithm to control the temperature and AlF3 concentration of electrolyte for 300 kA prebake aluminum production cells by altering the setting cell voltage and the AlF3 adding rate. One is liquidus model which can be used to calculate AlF3 concentration of electrolyte by some technical parameters and target superheat and the other is the temperature models which can determine the required cell voltage by the technical parameters and target temperature. Consequently, the AlF3 addition rate can be decided by the AlF3 concentration. The temperature and AlF3 concentration of electrolyte in the production are measured and the differences between the measurement and the corresponding calculation are used as feedback to correct the model. The coefficients in the model are also revised according to the external conditions. This system has been used in an aluminum company for 2 years. Both the temperature and the AlF3 concentration of electrolyte can be controlled as required and the energy consumption of the aluminum production was much decreased.http://dx.doi.org/10.1155/2014/181905 |
| spellingShingle | Zeng Shuiping Wang Shasha Qu Yaxing Control of Temperature and Aluminum Fluoride Concentration Based on Model Prediction in Aluminum Electrolysis Advances in Materials Science and Engineering |
| title | Control of Temperature and Aluminum Fluoride Concentration Based on Model Prediction in Aluminum Electrolysis |
| title_full | Control of Temperature and Aluminum Fluoride Concentration Based on Model Prediction in Aluminum Electrolysis |
| title_fullStr | Control of Temperature and Aluminum Fluoride Concentration Based on Model Prediction in Aluminum Electrolysis |
| title_full_unstemmed | Control of Temperature and Aluminum Fluoride Concentration Based on Model Prediction in Aluminum Electrolysis |
| title_short | Control of Temperature and Aluminum Fluoride Concentration Based on Model Prediction in Aluminum Electrolysis |
| title_sort | control of temperature and aluminum fluoride concentration based on model prediction in aluminum electrolysis |
| url | http://dx.doi.org/10.1155/2014/181905 |
| work_keys_str_mv | AT zengshuiping controloftemperatureandaluminumfluorideconcentrationbasedonmodelpredictioninaluminumelectrolysis AT wangshasha controloftemperatureandaluminumfluorideconcentrationbasedonmodelpredictioninaluminumelectrolysis AT quyaxing controloftemperatureandaluminumfluorideconcentrationbasedonmodelpredictioninaluminumelectrolysis |