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Quantification of sodium present in dry aggregates and anodes

Bureau Julie, Kocaefe Duygu, Bhattacharyay Dipankar, Kocaefe Yasar S. et Morais Brigitte. (2016). Quantification of sodium present in dry aggregates and anodes. Light Metals, p. 877-881.

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URL officielle: https://doi.org/10.1002/9781119274780.ch148

Résumé

In aluminum industry, it is important to determine the concentration of contaminants present in anode raw materials as rapidly as possible in order to adjust the anode recipe. Sodium, which is an impurity coming largely from anode butts, significantly influences the anode reactivity, and an increase in its concentration increases the anode consumption. A simple and inexpensive method was developed to quantify the sodium content in dry aggregates and anodes without grinding the samples. The method is based on potentiometric principles using a sodium-ion specific electrode. A sample can be analyzed easily within thirty minutes. In order to prevent the rapid degradation of the specific electrode due to experimental conditions, sodium is extracted from samples by electrophoresis prior to the test. The comparison shows that the measured sodium concentrations obtained are similar to the results determined by other test methods.

Type de document:Article publié dans une revue avec comité d'évaluation
Pages:p. 877-881
Version évaluée par les pairs:Oui
Date: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:carbon anodes, anode quality, sodium content, electrophoresis, specific sodium-ion electrode
Déposé le:02 mai 2019 16:58
Dernière modification:02 mai 2019 16:58
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