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Effect of carbon anode production parameters on anode cracking

Amrani Salah, Kocaefe Duygu, Kocaefe Yasar S., Bhattacharyay Dipankar, Bouazara Mohamed et Côté Jules. (2021). Effect of carbon anode production parameters on anode cracking. SN Applied Sciences, 3,

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URL officielle: http://dx.doi.org/doi:10.1007/s42452-020-04133-8

Résumé

Carbon anodes are used in the electrolytic production of aluminum. The quality of anodes is directly related to the production cost, carbon and energy consumption, and environmental emissions. It is desired that the anodes have high density, low porosity/cracks, low electrical resistivity as well as low air and CO2 reactivities. Low resistivity of anodes reduces energy required to produce aluminum during electrolysis. The presence of cracks and pores increases the anode electrical resistivity. Therefore, it is important to know how and when the pores and cracks form during the anode production so that the necessary actions could be taken to prevent their formation. A study was carried out to investigate the effect of different anode production parameters such as anode composition, type of raw material used, time and top-former bellow pressure of vibro-compactor, green anode cooling medium, and heating rate used during baking on the crack formation. The anodes are fabricated at the carbon laboratory of University of Quebec at Chicoutimi (UQAC) and characterized by measuring their properties (density, electrical resistivity, and surface crack density). The anode properties, hence the anode quality, were correlated with the anode production parameters. Also, their tomographic analysis was carried out to visualize and quantify the internal cracks.

Type de document:Article publié dans une revue avec comité d'évaluation
Volume:3
Version évaluée par les pairs:Oui
Date:25 Janvier 2021
Sujets:Sciences naturelles et génie > Génie
Sciences naturelles et génie > Génie > Génie des matériaux et génie métallurgique
Sciences naturelles et génie > Sciences appliquées
Département, module, service et unité de recherche:Départements et modules > Département des sciences appliquées > Module d'ingénierie
Mots-clés:aluminum production, carbon anode, vibro-compaction, anode baking, characterization, production d'aluminium, anode de carbone, vibro-compactage, cuisson d'anode, caractérisation
Déposé le:18 févr. 2021 20:17
Dernière modification:18 févr. 2021 20:17
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Creative Commons LicenseSauf indication contraire, les documents archivés dans Constellation sont rendus disponibles selon les termes de la licence Creative Commons "Paternité, pas d'utilisation commerciale, pas de modification" 2.5 Canada.

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