LiveZilla Live Chat Software

Constellation, le dépôt institutionnel de l'Université du Québec à Chicoutimi

Thermogravimetric study on devolatilization kinetics of Chinalco anodes during baking

Kocaefe Duygu, Xie Yadian, Kocaefe Yasar S., Wei Liu, Zou Shaoling et Wu Anjing. (2013). Thermogravimetric study on devolatilization kinetics of Chinalco anodes during baking. Journal of Materials Science Research, 2, (2), p. 22-34.

[img]
Prévisualisation
PDF - Version publiée
Disponible sous licence Creative Commons Attribution.

1MB

URL officielle: http://dx.doi.org/doi:10.5539/jmsr.v2n2p22

Résumé

The production of aluminum requires the use of carbon anodes which are manufactured from coke, pitch, and recycled butts and anodes. Pitch acts as a binder. Green anodes are produced by mixing all these ingredients and then forming them in a compactor. The final step is the baking of green anodes, which determines the final anode properties. During baking, volatiles evolve from the pitch which carbonizes and binds the particulate matter. Anode quality greatly influences the performance of electrolytic cells and has an impact on carbon consumption, energy use, green house gas emissions, and cost. In this project, the effects of the baking conditions on some of the anode properties (air permeability, air and CO2 reactivities) were studied, and the devolatilization kinetics was determined for different cases. The results indicate that the lower heating rates and higher baking temperatures improve the above properties. In this article, the experimental work and the methodology for the determination of the kinetic expressions for devolatilization are described, and the results are presented. The position of volatile evolution in the baking furnace can be determined via these expressions, and this could be effectively used in controlling the volatile combustion to improve the furnace performance.

Type de document:Article publié dans une revue avec comité d'évaluation
Volume:2
Numéro:2
Pages:p. 22-34
Version évaluée par les pairs:Oui
Date:2013
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:anodes for aluminum electrolysis, carbon anodes, devolatilisation kinetics, anode properties
Déposé le:23 avr. 2019 23:55
Dernière modification:23 avr. 2019 23:55
Afficher les statistiques de telechargements

Éditer le document (administrateurs uniquement)

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.

Bibliothèque Paul-Émile-Boulet, UQAC
555, boulevard de l'Université
Chicoutimi (Québec)  CANADA G7H 2B1
418 545-5011, poste 5630