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Meeting 2022 TMS Annual Meeting & Exhibition
Symposium Aluminum Reduction Technology
Presentation Title Modeling of the Heat Exchange, the Phase Change, and Dissolution of Alumina Injected in Electrolysis Cells
Author(s) Thomas Roger, László Kiss, Lukas Dion, Jean Francois Bilodeau, Sébastien Guérard, Guillaume Bonneau, Kirk Fraser
On-Site Speaker (Planned) Thomas Roger
Abstract Scope For the aluminum industry, understanding each step of alumina addition to the electrolysis bath is critical to reach optimal process conditions. From the injection to the complete dissolution, several physical and chemical mechanisms are interacting: solid and fluid mechanics, heat transfer, phase change and dissolution. The mathematical model presented in this article uses the discrete element method (DEM) to consider the solid alumina powder as a discrete material. It is coupled to the "smoothed particle hydrodynamics" (SPH) method to simulate the liquid electrolyte. The second layer of the model is used to calculate the heat transfer and coalescence of solid materials resulting from alumina sintering. Then, phase change is integrated into the model to consider the solidification of the bath. Sequentially, the dissolution of the alumina particles is reproduced and study to perform the injection of the alumina in the future.
Proceedings Inclusion? Planned: Light Metals
Keywords Modeling and Simulation, Aluminum, Powder Materials


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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