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A non-destructive technique for the on-line quality control of green and baked anodes

Benzaoui Abderrahmane, Kocaefe Duygu, Bhattacharyay Dipankar et Kocaefe Yasar S.. (2017). A non-destructive technique for the on-line quality control of green and baked anodes. Metals, 7, (4), p. 128-138.

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URL officielle: http://dx.doi.org/doi:10.3390/met7040128

Résumé

Carbon anodes play an important role in the electrolytic production of aluminum. They have a significant economic and environmental impact. Carbon anodes are made of dry aggregates, composed of petroleum coke, recycled rejects, and butts, bound by coal tar pitch. Due to several factors, defects (cracks/pores) appear in anodes during the fabrication process, affecting their quality. It is thus essential to control the quality of anodes before their use in the electrolysis cell. Current practice for the quality evaluation (visual inspection, core analysis) gives limited information. As an alternative to this practice, electrical resistivity measurements can be used. Electrical resistivity is one of the key indicators for anode quality and its homogeneity. A simple and non-destructive method has been developed for the specific electrical resistivity measurement of anodes (SERMA) for on-line control of anode quality. Various tests have been carried out at both lab scale and industrial scale. In this study, the electrical resistivity distributions in the lab-scale anodes were measured and compared with those of the tomography analysis. The method is able to detect defective anodes even before the baking process.

Type de document:Article publié dans une revue avec comité d'évaluation
Volume:7
Numéro:4
Pages:p. 128-138
Version évaluée par les pairs:Oui
Date:6 Avril 2017
Sujets:Sciences naturelles et génie > Génie > Génie des matériaux et génie métallurgique
Département, module, service et unité de recherche:Départements et modules > Département des sciences appliquées > Module d'ingénierie
Mots-clés:carbon anodes, quality control, non-destructive method, electrical resistivity, anodes de carbone, contrôle de la qualité, méthode non destructive, résistivité électrique
Déposé le:08 juin 2017 13:07
Dernière modification:08 juin 2017 13:07
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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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