About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Electrode Technology for Aluminum Production
|
| Presentation Title |
Reducing Electrical Resistivity in Pressed Anodes: Insights from the Grand-Baie Initiative |
| Author(s) |
Véronique Dayssylva-Raymond, Élie Landry, Émile Bolduc, Lysandre Gagnon, Charles Lebel-Tremblay, William Pageau |
| On-Site Speaker (Planned) |
Véronique Dayssylva-Raymond |
| Abstract Scope |
Anode electrical resistivity is a critical property that directly influences the energy balance, current efficiency, and operational stability of the Hall-Héroult process. Maintaining low and stable resistivity ensures uniform current distribution and contributes to the performance and longevity of the reduction cell. Ensuring optimal resistivity is complex and demands rigorous control of primary materials and recipes, as well as appropriate manufacturing processes, from the paste plant to the anode baking furnace. A wide initiative was launched at the Grand-Baie plant to enhance the resistivity of pressed anodes, allowing for the identification and mitigation of factors contributing to its degradation. Extensive analysis and trials were carried out to better understand key parameters such as forming temperature, compaction pressure, and pitch adjustment. Implementing the insights gained from these studies led to a resistivity reduction of 5 μΩ∙m, and several measures have since been adopted to ensure the long-term sustainability of these improvements. |
| Proceedings Inclusion? |
Planned: Light Metals |
| Keywords |
Aluminum, Shaping and Forming, Other |