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Meeting 2022 TMS Annual Meeting & Exhibition
Symposium Aluminum Reduction Technology
Presentation Title Preparation of Aluminum Master Alloys by Electrolytic Co-deposition in Hall-Héroult Cells
Author(s) Xiangwen Wang
On-Site Speaker (Planned) Xiangwen Wang
Abstract Scope Producing aluminum alloys in Hall cells can be an economical alternative to meet ever-increasing light weight alloy applications. Alcoa has carried out comprehensive studies over past years using Hall cells to produce aluminum-silicon, aluminum – scandium, and aluminum – rare earth alloys. The studies were performed in 300A lab scale with multiple electrolysis campaigns for each alloy with kilo scale of alloys produced. For the Al-Si, over 7.0% Si foundry alloy was produced by feeding Hall cell with alumina-sand mixture. For the Al-Sc, a master alloy of 3.5% Sc was produced with introducing scandium oxide and alumina. For Al-Re, 8.5% Re alloy was obtained by feeding rare earth oxides and alumina. This paper summarizes our lab scale studies for each of the Al alloy systems. Electrolysis operating conditions and key parameters were obtained which are considered a critical step toward commercial application in producing such alloys in Hall cells.
Proceedings Inclusion? Planned: Light Metals
Keywords Aluminum, Electrometallurgy, Process Technology

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

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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