dc.contributor.author | Grimstad, Martin | |
dc.contributor.author | Elstad, Kim Ronny | |
dc.contributor.author | Solheim, Asbjørn | |
dc.contributor.author | Einarsrud, Kristian Etienne | |
dc.date.accessioned | 2020-10-28T12:30:40Z | |
dc.date.available | 2020-10-28T12:30:40Z | |
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/11250/2685504 | |
dc.description | This is the accepted manuscript. The final publication is available at:
Grimstad M., Elstad K.R., Solheim A., Einarsrud K.E. (2020) Utilization of Waste Heat for Pre-heating of Anodes. In: Tomsett A. (eds) Light Metals 2020. The Minerals, Metals & Materials Series. Springer, Cham. https://doi.org/10.1007/978-3-030-36408-3_108 | en_US |
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 | en_US |
dc.relation.ispartofseries | The Minerals, Metals & Materials Series;2367-1181 | |
dc.rights | Attribution-NonCommercial-NoDerivatives 4.0 Internasjonal | * |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/4.0/deed.no | * |
dc.subject | Energy efficiency | en_US |
dc.subject | Waste heat | en_US |
dc.subject | Anode pre-heating | 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.rights.holder | © The Minerals, Metals & Materials Society 2020 | en_US |
dc.source.pagenumber | 811-816 | 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 |
cristin.ispublished | true | |
cristin.fulltext | postprint | |
cristin.qualitycode | 1 | |