About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Aluminum Reduction Technology
|
| Presentation Title |
Determining the Optimum Alumina Concentration Level for Hall-Héroult Process under Power Modulation |
| Author(s) |
Choon-Jie Wong, Jie Bao, Maria Skyllas-Kazacos, Barry Welch, Nadia Ahli, Maitha Faraj, Mohamed Mahmoud |
| On-Site Speaker (Planned) |
Choon-Jie Wong |
| Abstract Scope |
Dissolved alumina concentration is a critical parameter in the Hall-Héroult process. A well-controlled cell experiences fewer process upsets, such as anode effects and sludge accumulation. While alumina consumption and feeding rates are governed by the line current, the alumina concentration level serves as a controllable parameter that plays a crucial role in maintaining process stability. This study investigates the optimum alumina concentration level as a control target, using mass transport and electrochemical cell models, particularly under line current modulation. Power modulation is gaining importance as a strategy to integrate renewable energy sources and improve operational flexibility. Results highlight that the optimum alumina concentration is highly dependent on the line current modulation strategy, offering a targeted approach to enhancing process stability and energy efficiency while reducing the risk of operational disruptions. |
| Proceedings Inclusion? |
Planned: Light Metals |
| Keywords |
Aluminum, Modeling and Simulation, Other |