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| Effects of Anode Quality and KF & LiF Contents on Amount of Carbon Dust during Aluminum Electrolysis with High Potassium Electrolyte System |
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Received:May 17, 2021
Revised:May 31, 2021
Accepted:June 01, 2021
Published Online:September 18, 2021
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| DOI：doi：10.3969/j.issn.1007-7545.2021.10.005 |
| KeyWord:amount of carbon dust; high KF content electrolyte system; KF and LiF contents; degree of superheat |
| Author | Institution |
| BAO Sheng-zhong |
中铝郑州有色金属研究院有限公司 |
| LUO Ying-tao |
中铝郑州有色金属研究院有限公司 |
| CHEN Kai-bin |
中铝郑州有色金属研究院有限公司 |
| HE Fei |
遵义铝业股份有限公司 |
| LI Gang |
遵义铝业股份有限公司 |
| LENG Long-yang |
遵义铝业股份有限公司 |
| LI Chang-lin |
中铝郑州有色金属研究院有限公司 |
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| Abstract: |
| Operation superheat of electrolyte, amount of carbon dust and carbon content in electrolyte during period of different quality carbon anodes usage in an aluminum smelter enterprise were tracked for a long time. Electrolyte composition adjustment test was carried out to track and analyze carbon dust amount and operation superheat variations with change of KF and LiF contents. The results show that high quality anodes can significantly reduce amount of carbon dust and carbon content in electrolyte. Low operation superheat and high amount of carbon dust may be the characteristic of aluminum electrolysis process with high KF and low LiF content electrolyte system. Reducing KF content in electrolyte and appropriately raising LiF content can improve operation superheat and reduce amount of carbon dust significantly. Anode quality, LiF and KF contents in electrolyte, operation superheat of bathe, and carbon content in anode covering materials are important factors affecting carbon dust production in electrolysis process. |
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