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Meeting 2023 TMS Annual Meeting & Exhibition
Symposium 60 Years of Taking Aluminum Smelting Research and Development from New Zealand to the World: An LMD Symposium in Honor of Barry J. Welch
Presentation Title Following Alumina Dissolution Kinetics with Electrochemical and Video Analysis Tools
Author(s) Daniel Marinha, Astrid Johanne Meyer, Marían Kucharik, Sylvie Bouvet, Miroslav Boca, Frantisek Simko, Michal Korenko, Vladimir Danielik
On-Site Speaker (Planned) Daniel Marinha
Abstract Scope The rate of alumina dissolution in cryolitic melts is critical for the management of aluminum production pots. The kinetics of the dissolution reaction depends on the combined effects of physical and chemical characteristics of alumina. The literature mentions several methods to follow the rate of dissolution, with variable degrees of complexity and success. We report a combination of analytical tools to evaluate the dissolution rates of various industrial aluminas in an industrial cryolite bath collected shortly before the anode-effect. Batches of powders were sequentially added to an electrochemical cell specifically designed for this test. The dissolution rate was measured electrochemically, and an automatic script was developed to measure the flotation time of the alumina rafts from digital recordings. From the results, we can correlate the alumina dissolution rate and flotation times, with the initial characteristics of the alumina powder.
Proceedings Inclusion? Planned: Light Metals
Keywords Powder Materials, Other, Characterization


A Discussion on Thermal Impact of Anode Change in Aluminum Reduction Cell
A Dynamic Coupled Mass and Thermal Model for the Top Chamber of the Aluminium Smelting Cells
A New Strategy for Transient Heat Transfer Models with Phase Change for the Aluminum Electrolysis Industry
A Pragmatic Model for Bath Temperature Evolution during Alumina Feeding
A Smart Individual Anode Current Measurement System and Its Applications
Anode Quality Optimisation – Industry Learnings from the Research Supervised by Barry Welch
Barry Welch - A Mentor Driving Improvement in Industry Through Leadership and Technology
Barry Welch, Professor and Mentor for the Aluminium Industry
Barry Welch´s Honorary Keynote
Contribution of Professor Barry Welch to the Development of EGA’s Reduction Technologies
Development and Deployment Measures in PLC-based Pot Control System at Low Amperage Aluminium Reduction Cell
EGA’s First Holistic Mobile Application for Smelter Operations
Following Alumina Dissolution Kinetics with Electrochemical and Video Analysis Tools
Highlights of Aluminium Smelting Research Inspired by Barry Welch at UNSW from 1985 to Present
Impact of Aluminium Reduction Cell Parameters on Feeder Hole Condition
Light Metals Research at the University of Auckland
Meeting the Requirements of Potline Customers – the Largely Unmet Challenges Set by Barry Welch to Carbon Anode Producers
Monitoring Cell Conditions and Anode Freeze Dissolution with Model-based Soft Sensor After Anode Change
Process Recovery to Unlock Power Efficiency Improvement at BSL
Testing Feeding Alumina in Three Channels in a Wide Cell
The Need to Respect to the Interlink between Science, Physics, and Cell Design in an Environmentally Responsible Manner - The Next Big Challenge for Aluminium Smelting
What Makes TMS Special? Let Us Consider a Case Study in Volunteer Excellence: Barry J. Welch

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