About this Abstract |
| Meeting |
2021 TMS Annual Meeting & Exhibition
|
| Symposium
|
Aluminum Reduction Technology Across the Decades: An LMD Symposium Honoring Alton T. Tabereaux and Harald A. Øye
|
| Presentation Title |
Investigation of Cyclic Process Variations within Hall-Héroult Reduction Cells |
| Author(s) |
Jayson Tessier, Samuel Duplessis |
| On-Site Speaker (Planned) |
Jayson Tessier |
| Abstract Scope |
The hundreds of aluminum reduction cells within an aluminum smelter are typically operated in an individual fashion. It is known that reduction cells from a single potline can have different behavior and performance depending on their different lining design, historical performance and/or set points for bath chemistry, temperature and electrical resistance. The pot operational state is generally characterized by a limited set of pseudo real time indicators and different variables, such as bath chemistry or temperature, manually sampled at low frequency, where consecutive samples can be separated by a few days. Smelting operators have designed process control systems and reaction procedures to cope with process variations, while not always acknowledging the cyclic variations characterizing the pot state. This paper sheds some light on cyclic operation parameters variations and how it can impact negatively control actions taken by the control system or the pot operators. |
| Proceedings Inclusion? |
Planned: Light Metals |