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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 Monitoring Cell Conditions and Anode Freeze Dissolution with Model-based Soft Sensor After Anode Change
Author(s) Choon-Jie Wong, Jie Bao, Maria Skyllas-Kazacos, Ali Jassim, Mohamed Mahmoud, Alexander Arkhipov
On-Site Speaker (Planned) Jie Bao
Abstract Scope Carbon anodes in Hall-Héroult cells are consumed continuously and changed periodically. The anode change operation introduces major energy deficit which adversely perturbs the mass and heat balance of the cell. The freeze formed underneath the newly-replaced anodes impedes normal bath circulation and mixing, removes local heat as it dissolves, and disrupts the normal anode current flow which deforms the metal pad via magnetohydrodynamic forces. These exacerbate the spatial non-uniformity in a cell which may lead to increased process faults and loss of process efficiency. This paper proposes the use of individual anode current measurements to monitor the dissolution of anode freeze in real-time. This helps to return the cell to nominal operation conditions quickly, by identifying issues such as low local superheat, as well as by enabling further improvements to operational procedures such as ACD adjustments for new anodes. This improves process and energy efficiencies following anode change operations.
Proceedings Inclusion? Planned: Light Metals
Keywords Aluminum, Modeling and Simulation, Other

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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