Anodic Bubble Behavior in a Laboratory Scale Transparent Electrolytic Cell for Aluminum Electrolysis
In the Hall-Héroult process for extracting aluminum, the evolution and dynamics of anodic bubbles have a significant influence on the efficiency of the overall electrolysis process. In this study, the behavior of the bubbles beneath the carbon anode in cryolite-alumina molten salt was stu...
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MDPI AG
2018-10-01
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| Series: | Metals |
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| Online Access: | http://www.mdpi.com/2075-4701/8/10/806 |
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| author | Yipeng Huang Zhaowen Wang Youjian Yang Bingliang Gao Zhongning Shi Xianwei Hu |
| author_facet | Yipeng Huang Zhaowen Wang Youjian Yang Bingliang Gao Zhongning Shi Xianwei Hu |
| author_sort | Yipeng Huang |
| collection | DOAJ |
| description | In the Hall-Héroult process for extracting aluminum, the evolution and dynamics of anodic bubbles have a significant influence on the efficiency of the overall electrolysis process. In this study, the behavior of the bubbles beneath the carbon anode in cryolite-alumina molten salt was studied for the first time using a laboratory-scale transparent electrolysis cell to view the anode from the bottom. The bubble dynamics and the relevant characteristic parameters of bubbles were obtained using video cameras and image processing. It was found that the bubbles were observed to preferentially generate at several areas on the underside of the anode and the morphologies of coalesced bubbles show excellent similarity. Moreover, the behavior of gas on carbon and graphite anodes was significantly different, where the carbon anode favored the forming of larger bubbles. These observations confirmed different types of carbon anodes cause different bubble behavior. These findings are expected to be useful in optimizing the aluminum electrolysis process on an industrial scale. |
| first_indexed | 2024-12-14T18:57:50Z |
| format | Article |
| id | doaj.art-d5e9c6a2a1da48158c717ab050771b0a |
| institution | Directory Open Access Journal |
| issn | 2075-4701 |
| language | English |
| last_indexed | 2024-12-14T18:57:50Z |
| publishDate | 2018-10-01 |
| publisher | MDPI AG |
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| series | Metals |
| spelling | doaj.art-d5e9c6a2a1da48158c717ab050771b0a2022-12-21T22:51:03ZengMDPI AGMetals2075-47012018-10-0181080610.3390/met8100806met8100806Anodic Bubble Behavior in a Laboratory Scale Transparent Electrolytic Cell for Aluminum ElectrolysisYipeng Huang0Zhaowen Wang1Youjian Yang2Bingliang Gao3Zhongning Shi4Xianwei Hu5School of Metallurgy, Northeastern University, 3-11 Wenhua Road, Heping District, Shenyang 110819, ChinaSchool of Metallurgy, Northeastern University, 3-11 Wenhua Road, Heping District, Shenyang 110819, ChinaSchool of Metallurgy, Northeastern University, 3-11 Wenhua Road, Heping District, Shenyang 110819, ChinaSchool of Metallurgy, Northeastern University, 3-11 Wenhua Road, Heping District, Shenyang 110819, ChinaSchool of Metallurgy, Northeastern University, 3-11 Wenhua Road, Heping District, Shenyang 110819, ChinaSchool of Metallurgy, Northeastern University, 3-11 Wenhua Road, Heping District, Shenyang 110819, ChinaIn the Hall-Héroult process for extracting aluminum, the evolution and dynamics of anodic bubbles have a significant influence on the efficiency of the overall electrolysis process. In this study, the behavior of the bubbles beneath the carbon anode in cryolite-alumina molten salt was studied for the first time using a laboratory-scale transparent electrolysis cell to view the anode from the bottom. The bubble dynamics and the relevant characteristic parameters of bubbles were obtained using video cameras and image processing. It was found that the bubbles were observed to preferentially generate at several areas on the underside of the anode and the morphologies of coalesced bubbles show excellent similarity. Moreover, the behavior of gas on carbon and graphite anodes was significantly different, where the carbon anode favored the forming of larger bubbles. These observations confirmed different types of carbon anodes cause different bubble behavior. These findings are expected to be useful in optimizing the aluminum electrolysis process on an industrial scale.http://www.mdpi.com/2075-4701/8/10/806aluminum electrolysisanodic bubbletransparent electrolysis cellscarbon anode |
| spellingShingle | Yipeng Huang Zhaowen Wang Youjian Yang Bingliang Gao Zhongning Shi Xianwei Hu Anodic Bubble Behavior in a Laboratory Scale Transparent Electrolytic Cell for Aluminum Electrolysis Metals aluminum electrolysis anodic bubble transparent electrolysis cells carbon anode |
| title | Anodic Bubble Behavior in a Laboratory Scale Transparent Electrolytic Cell for Aluminum Electrolysis |
| title_full | Anodic Bubble Behavior in a Laboratory Scale Transparent Electrolytic Cell for Aluminum Electrolysis |
| title_fullStr | Anodic Bubble Behavior in a Laboratory Scale Transparent Electrolytic Cell for Aluminum Electrolysis |
| title_full_unstemmed | Anodic Bubble Behavior in a Laboratory Scale Transparent Electrolytic Cell for Aluminum Electrolysis |
| title_short | Anodic Bubble Behavior in a Laboratory Scale Transparent Electrolytic Cell for Aluminum Electrolysis |
| title_sort | anodic bubble behavior in a laboratory scale transparent electrolytic cell for aluminum electrolysis |
| topic | aluminum electrolysis anodic bubble transparent electrolysis cells carbon anode |
| url | http://www.mdpi.com/2075-4701/8/10/806 |
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