| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Aluminum Reduction Technology
|
| Presentation Title |
Change of Anode Operation Pattern from Single to Double Staircase at Albras |
| Author(s) |
Camila Rabelo Silva, Vanderlei Oliveira Fernandes, Nilton Freixo Nagem, Ivar Ericeira Vasconcelos Sousa |
| On-Site Speaker (Planned) |
Vanderlei Oliveira Fernandes |
| Abstract Scope |
Most essential operational procedures in prebaked cells are performed with cranes in Albras, which leads to high usage and dependence of these equipment, making it difficult to handle possible failures. The old anode change pattern was single staircase, where anodes were replaced one at a time. Aiming to improve logistics and reduce crane time usage, Albras has tested a new anode operation strategy, where two anodes are changed per cell, keeping a pattern sequence during the transition period. Due to expected pot instability increase, several parameters as bath generation, temperature, noise and anode effect were tracked to evaluate process impacts. Anode current pick up and current distribution measurement were also analyzed together with time of activity, comparing cells in single and in double anode change strategy. This paper also discusses further strategies to keep cells in double anode pattern more stable after anode change operation |
| Proceedings Inclusion? |
Planned: Light Metals |