dc.contributor.author | Stanic, Nikolina | |
dc.contributor.author | Jevremovic, Ivana | |
dc.contributor.author | Martinez, Ana Maria Cuellar | |
dc.contributor.author | Sandnes, Espen | |
dc.date.accessioned | 2021-02-16T14:57:11Z | |
dc.date.available | 2021-02-16T14:57:11Z | |
dc.date.created | 2021-01-06T12:34:31Z | |
dc.date.issued | 2020 | |
dc.identifier.citation | Metallurgical and Materials Transactions B. 2020, 51 (3), 1243-1253. | en_US |
dc.identifier.issn | 1073-5615 | |
dc.identifier.uri | https://hdl.handle.net/11250/2728496 | |
dc.description.abstract | The anode potential has been shown to be highly dependent on anode geometry and orientation in the Hall–Héroult process. This work is an experimental laboratory scale study of the effect of anode geometry and orientation on bubble formation and detachment for four different anode designs: horizontal (surface facing downwards), inverted horizontal (surface facing upwards), vertical, rod (with both vertical and horizontal surface). From polarization curves, it was found that the vertical anode and the inverted horizontal anode operated at lowest potentials. Above 1 A cm−2, the vertical anode showed the lowest potential. As the current increases, the transition towards smaller noise is pronounced for the horizontal anode and to some degree for the vertical anode and inverted horizontal anode. Fast Fourier Transform analysis of chronoamperometric data gave a dominant frequency only for the horizontal anode and the rod anode. The bubble release time corresponded well with the dominant frequency for the rod anode for all current densities and for the horizontal anode at lower current densities. Only random bubble noise was found for the vertical and the inverted horizontal anode and is probably due to a bubble-induced convection effectively removing the bubbles. | en_US |
dc.language.iso | eng | en_US |
dc.publisher | Springer | en_US |
dc.rights | Navngivelse 4.0 Internasjonal | * |
dc.rights.uri | http://creativecommons.org/licenses/by/4.0/deed.no | * |
dc.title | Bubble Evolution on Different Carbon Anode Designs in Cryolite Melt | en_US |
dc.type | Peer reviewed | en_US |
dc.type | Journal article | en_US |
dc.description.version | publishedVersion | en_US |
dc.source.pagenumber | 1243-1253 | en_US |
dc.source.volume | 51 | en_US |
dc.source.journal | Metallurgical and Materials Transactions B | en_US |
dc.source.issue | 3 | en_US |
dc.identifier.doi | 10.1007/s11663-020-01835-7 | |
dc.identifier.cristin | 1866259 | |
dc.description.localcode | Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/. | en_US |
cristin.ispublished | true | |
cristin.fulltext | original | |
cristin.qualitycode | 2 | |