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Meeting 2022 TMS Annual Meeting & Exhibition
Symposium Aluminum Reduction Technology
Presentation Title A Pragmatic Model for Alumina Feeding
Author(s) Stein Tore Johansen, Asbjørn Solheim, Kurian J. Vachaparambil, Kristian Etienne Einarsrud
On-Site Speaker (Planned) Kurian J. Vachaparambil
Abstract Scope In this paper we demonstrate how we can develop a coarse-grained model for alumina distribution and dissolution in an aluminium reduction cell. The model is designed to have the potential of being a part of a control system or play the role of a Digital Twin. The framework is based on the concepts of Pragmatism in Industrial Modelling.The numerical grid is the coarsest possible and special numerical techniques, presented in the manuscript, are applied to support fast simulations. The bath flow is imported into the coarse-grained model, while dispersion and dissolution is resolved in the model. The physics of particulate alumina dissolution and the electrochemical consumption of dissolved alumina at the anodes is represented, allowing for observations of alumina distribution in time and space. In demonstration simulations the model is able to run up to 20 times faster than real time, depending upon resolution and level of physical details.
Proceedings Inclusion? Planned: Light Metals
Keywords Aluminum, Modeling and Simulation, Other


A Pragmatic Model for Alumina Feeding
A Water Model Study of Alumina Feeding and Dispersion
Advanced Alumina Dissolution Modelling
An Attempt to Estimate the Sulfuric Acid Dewpoint in the Flue Gas from Aluminium Electrolysis Cells
Bauxite & Alumina: Now and In the Future
Concentration Distribution of Carbon Particles in Aluminium Electrolysis Cells
Developing and Implementing an Efficient Forced Cooling Network at Aluminerie Alouette
Direct Production of Aluminum Manganese and Silicon Alloys in Aluminum Reduction Cells, A Laboratory Test
Direct Production of Aluminum Titanium Alloys in Aluminum Reduction Cells, A Laboratory Test
Empirical Prediction of Alumina Dissolution Rate in a Cryolitic Melt: Comparison with the Existing Literature
Imaging Alumina Distribution Using Low-voltage Anode Effect Detections in Anodic Current
Managing Power Interruptions at 360 KA Smelter
Mass Transport by Waves: Physical Model with Coalescence, Fragmentation, and Displacement on a Bath-metal Interface
Modeling of the Heat Exchange, the Phase Change, and Dissolution of Alumina Injected in Electrolysis Cells
Oxide Sensor Measurements and Simultaneous Optical Observations during Dissolution of Alumina in Cryolite Melt
Preparation of Aluminum Master Alloys by Electrolytic Co-deposition in Hall-Héroult Cells
Restart of Copper-insert Pots in EGA's High Amperage Potlines
Stabilizing a Low-dimensional Model of Magnetohydrodynamic Instabilities in Aluminum Electrolysis Cells
Statistical Model for Forecasting the Cell Replacement Rate in an Aluminum Smelter
Strategic Training and Development of Smelter Teams to Improve Business Outcomes
The Survivability of Aluminum Potlines after Lengthy Electrical Power Outages
Trace Elements in Aluminium Smelting Carbon Dust and Their Extraction

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