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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 Impact of Aluminium Reduction Cell Parameters on Feeder Hole Condition
Author(s) Pascal Lavoie, Mark P. Taylor
On-Site Speaker (Planned) Pascal Lavoie
Abstract Scope Aluminium reduction requires alumina to be fed and dissolved into electrolyte. The feeder hole condition may impact severely the ability to dissolve the added alumina. In this study, two sets of observations were made on a large sample of aluminium reduction cells to understand the feeder hole condition progress during feed events and determine which reduction cell parameters affect the feeder hole condition and the progression pathway of the feeding event sequence. The results show that feed rate has a major impact on the initial feeder hole condition and is determinant to the pathway of the feeding sequence. Higher superheat, lower excess AlF3 and longer time since the last anode change increased the probability of finding feeder hole conditions conducive to dissolution. The observations of blocked feeder holes were found to be linked to abnormal process conditions or a mechanical issue. Changes made to the feeding strategy between the two observation sets led to a significant improvement of the feeder hole condition. The proportion of opened feeder holes increased from 12% to 41%, resulting in a more than 50% reduction of the anode effect frequency smelter-wide.
Proceedings Inclusion? Planned: Light Metals

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

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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