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Modification of coke by different additives to improve anode properties

Öztürk Sena, Kocaefe Duygu, Bhattacharyay Dipankar, Kocaefe Yasar S. et Morais Brigitte. (2018). Modification of coke by different additives to improve anode properties. Fuel, 211, p. 102-109.

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URL officielle: https://doi.org/10.1016/j.fuel.2017.09.045

Résumé

Aluminum is produced in electrolytic cells using carbon anodes, which consist of a mixture of coke, pitch, and recycled carbon material. Anodes play an important role in aluminum production. The quality of raw materials can vary based on the source and the process parameters. In spite of the variations in the raw material properties, the industry has to maintain the quality of anodes. In order to manufacture good quality anodes, coke and pitch must interact well with each other. The affinity between these two components depends on good wetting properties, which will lead to good binding of the particles. The main objective of this work is to modify the coke in order to improve its wetting properties using different additives. An FT-IR study was done to identify certain functional groups in non-modified and modified coke as well as in pitch. The wetting tests were carried out using the sessile-drop method to measure the contact angle between cokes and pitch. Based on FT-IR and wettability results, an additive was selected and used for the fabrication of anodes, which were characterized before and after baking. The modification of coke with the selected additive improved the anode properties.

Type de document:Article publié dans une revue avec comité d'évaluation
Volume:211
Pages:p. 102-109
Version évaluée par les pairs:Oui
Date:2018
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:Calcined petroleum coke, additive, wettability, contact angle, coke-pitch interactions, anode properties
Déposé le:15 mars 2019 01:39
Dernière modification:15 mars 2019 01:39
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