Title: Change of Anode Operation Pattern from Single to Double Staircase at Albras
Abstract: Most essential operational procedures in prebaked cells are performed with cranes in Albras, which leads to high usage and dependence of these equipments, 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 at the same time, running a not standard sequence during the transition period. Due to expected pot instability increase, several parameters as bath generation, temperature, noise and anode effectAnode effect were tracked to evaluate process impactsProcess 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 changeDouble anode change strategy. This paper also discusses further strategies to keep cells in double anode pattern more stable after anode change operation.
Publication Year: 2020
Publication Date: 2020-01-01
Language: en
Type: book-chapter
Indexed In: ['crossref']
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