dc.contributor.author | Einarsrud, Kristian Etienne | |
dc.contributor.author | Grimstad, Martin | |
dc.contributor.author | Elstad, Kim Ronny | |
dc.contributor.author | Solheim, Asbjørn | |
dc.date.accessioned | 2020-09-08T06:53:59Z | |
dc.date.available | 2020-09-08T06:53:59Z | |
dc.date.created | 2020-09-04T15:02:23Z | |
dc.date.issued | 2020 | |
dc.identifier.citation | Light Metals. 2020, 811-816. | en_US |
dc.identifier.issn | 0147-0809 | |
dc.identifier.uri | https://hdl.handle.net/11250/2676764 | |
dc.description.abstract | Carbon anodes are replaced on a regular basis in Hall–Héroult cells as they are consumed by electrochemical reactions. Upon insertion of new anodes, bath will freeze locally as a result of low bath superheat and comparatively low anode temperature, creating an insulating layer on the anode surface, thereby delaying further production. In the current work the potential for pre-heating anodes directly utilizing waste heat from off-gas and spent anode butts is investigated using a numerical model realized in COMSOL and industrial measurements at the Alcoa Mosjøen smelter. Anode core temperatures over 150 ∘ C and surface temperatures over 250 ∘ C were found when using butts as a direct heat source. Frozen bath samples from both pre-heated and regular anodes were collected and analysed using computer tomography (CT) in order to assess how various heating strategies influences frozen bath morphology. | en_US |
dc.language.iso | eng | en_US |
dc.publisher | Springer Verlag | en_US |
dc.title | Utilization of waste heat for pre-heating of anodes | en_US |
dc.type | Peer reviewed | en_US |
dc.type | Journal article | en_US |
dc.description.version | acceptedVersion | en_US |
dc.source.pagenumber | 811-816 | en_US |
dc.source.journal | Light Metals | en_US |
dc.identifier.doi | https://doi.org/10.1007/978-3-030-36408-3_108 | |
dc.identifier.cristin | 1827444 | |
dc.relation.project | Norges forskningsråd: 257632 | en_US |
dc.description.localcode | "This is a post-peer-review, pre-copyedit version of an article. Locked until 28.1.2021 due to copyright restrictions. | en_US |
cristin.ispublished | true | |
cristin.fulltext | postprint | |
cristin.qualitycode | 1 | |