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Investigation of the refractory bricks used for the flue wall of the horizontal anode baking ring furnace

Oumarou Noura, Kocaefe Duygu et Kocaefe Yasar S.. (2016). Investigation of the refractory bricks used for the flue wall of the horizontal anode baking ring furnace. Ceramics International, 42, (16), p. 18436-18442.

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URL officielle: https://doi.org/10.1016/j.ceramint.2016.08.178

Résumé

Anode manufacturing, particularly the baking process, is an important part of the primary aluminium production process. Anode baking is carried out in closed or open top ring furnaces. The anodes are placed in pits and surrounded by packing coke to prevent oxidation by infiltrated air and mechanical support. The anodes are baked through indirect contact with the hot gas flowing in the flues on both sides of the pit. The flue walls are made of commercial refractory bricks, which are subjected to chemical (high temperature corrosion), mechanical (creep, walls, anode loading and unloading) and thermal (high temperature, thermal shock) conditions during the baking process. The resulting stress causes chemical and physical alterations across the width of the wall. This stress generally manifests in the collapsing, cracking and bending of flue walls. The chemical composition and physical properties of refractory bricks taken from degraded flue walls in an industrial plant were investigated, and it was shown that regular redressing and maintenance of flue walls can prevent or reduce additional energy consumption due to pit deformation, consequently reducing the cost of anode production.

Type de document:Article publié dans une revue avec comité d'évaluation
Volume:42
Numéro:16
Pages:p. 18436-18442
Version évaluée par les pairs:Oui
Date:Décembre 2016
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:Refractory corrosion, thermal properties, flues walls, anode baking, energy consumption
Déposé le:26 févr. 2019 01:13
Dernière modification:27 févr. 2019 01:06
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