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Communication Dans Un Congrès Année : 2022

Convection-diffusion Model For Alumina Concentration in Hall-Héroult Process

Résumé

Hall-Héroult process is an electrolysis method to produce aluminum at industrial scale. It is based on an electrochemical reaction that requires an alumina dissolution in a bath solution. The hazardous operational conditions make it difficult the development of a sensor for continuous measurement. Moreover, local variations of alumina concentration throughout the pot cell arise during daily operations. This paper presents a modeling procedure to obtain a spatio-temporal dynamic representation of alumina concentration distribution. From the convection-diffusion relations, the alumina source term is analyzed and expanded to obtain the relations between the available signals and the output. The goal is to develop a system that is able to predict the obtained measurement by taking into account transport properties. The model is validated with industrial data and compared with other models.
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Dates et versions

hal-03778970 , version 1 (16-09-2022)

Identifiants

Citer

Lucas José da Silva Moreira, Gildas Besancon, Francesco Ferrante, Mirko Fiacchini, Hervé Roustan. Convection-diffusion Model For Alumina Concentration in Hall-Héroult Process. IFAC MMM 2022 - 19th IFAC Symposium on Control, Optimization and Automation in Mining, Mineral and Metal Processing, Aug 2022, Montreal, Canada. pp.150-155, ⟨10.1016/j.ifacol.2022.09.259⟩. ⟨hal-03778970⟩
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