| About this Abstract |
| Meeting |
2022 TMS Annual Meeting & Exhibition
|
| Symposium
|
Aluminum Reduction Technology
|
| Presentation Title |
The Survivability of Aluminum Potlines after Lengthy Electrical Power Outages |
| Author(s) |
Alton T. Tabereaux |
| On-Site Speaker (Planned) |
Alton T. Tabereaux |
| Abstract Scope |
Electrical power outages lasting 3 to 6 hours in aluminum smelters can often result in shutting down all the cells in a potline. During the power outage the temperature of the cryolitic electrolyte decreases below 900°C thereby freezing a large volume of liquid bath which decreases the bath height and anode immersion in cells. When the potline is reenergized, there is a substantial increase in the total potline voltage due to the increase in electrical resistance combined with numerous anode effects causing rectifiers to ‘trip-out’ due to power over-load. The survivability of cells in the potlines to continue operating after the extended power outages depends largely on the corrective actions taken by potroom personnel during the first few hours after electrical power is restored. |
| Proceedings Inclusion? |
Planned: Light Metals |
| Keywords |
Aluminum, Electrometallurgy, Sustainability |