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| Study on Recovery and Utilization of Multiple Elements in Aluminum Electrolyte by Calcified Roasting |
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Received:October 24, 2020
Revised:October 27, 2020
Accepted:November 02, 2020
Published Online:January 21, 2021
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| DOI：doi：10.3969/j.issn.1007-7545.2021.02.010 |
| KeyWord:aluminum electrolyte; calcified roasting; recovery and utilization |
| Author | Institution |
| Liu Feng-qin |
北京科技大学冶金与生态工程学院 |
| Li Ai-jie |
北京科技大学冶金与生态工程学院 |
| Li Rong-bin |
北京科技大学冶金与生态工程学院 |
| Yang Xin |
北京科技大学冶金与生态工程学院 |
| Wu Ze-gang |
北京科技大学冶金与生态工程学院 |
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| Abstract: |
| Recovery and utilization of multiple elements in aluminum electrolyte of extra 0.6 million tons produced in China every year was studied. Based on chemical analysis and mineral tests for aluminum electrolyte, effect of available lime additions on calcified roasting reactions of aluminum electrolyte was investigated and leaching and reaction products of calcified roasted products in caustic solution were revealed. The results show that recovery of Al, Na, F in aluminum electrolyte is 93.35%, 90.21%, and 90.53%, respectively by calcified roasting under the conditions of 40%~50% of available lime and following caustic leaching for roasted products. Multiple valuable elements in aluminum electrolyte such as Na, Al, F and Ca can be recovered and resource utilized. |
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