Dion Lukas, Lagacé Charles-Luc, Evans James W., Victor Ron et Kiss László. (2015). On-line monitoring of anode currents to understand and improve the process control at Alouette. Dans : 144th Annual Meeting & Exhibition, TMS Light Metals 2015 , March 15-19, 2015, Orlando, Florida.
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Résumé
In 2014, Alouette acquired a system to monitor the on-line anode current on two pots. This system, developed and supplied by WIT, reports all anodes current and the pot voltage for every second of operation. The following paper describes some of the resulting improvements that apply to the process control of the aluminum electrolysis cell. Current monitoring of the anodes easily indicates the generation of localized anode effects (AE) prior to their propagation into a “voltage triggered” AE. Basic concepts, algorithms, results and optimization to improve the detection rate are discussed in the first part of the paper. Moreover, AE are directly influenced by the alumina distribution in the cell. A better understanding of the dissolution patterns based on the feeder’s position was achieved by using the monitoring system.
| Type de document: | Matériel de conférence (Non spécifié) |
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| Date: | 15 Mars 2015 |
| Sujets: | Sciences naturelles et génie > Génie 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 |
| Liens connexes: | |
| Mots-clés: | WIT, anode current, anode effect detection, alumina distribution, cell instability, courant d'anode, détection d'effet d'anode, distribution d'alumine, instabilité des cellules |
| Déposé le: | 27 janv. 2021 21:12 |
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| Dernière modification: | 27 janv. 2021 21:12 |
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