10.25673/122157">


Proceedings of International Conference on Applied Innovation in IT
2025/08/29, Volume 13, Issue 4, pp.491-497

Relationship Between Technical and Economic Indicators, Metal Level and Interpole Distance in an Aluminum Electrolyser


Semen Nozhko, Inna Soboleva and Abdusalom Umarov


Abstract: The article examines the mechanisms by which key technological operating parameters of aluminum electrolyzers – namely, the metal level and the interelectrode distance – affect the technical and economic performance of the aluminum electrolysis process. The analysis is conducted in a systematic manner, reflecting the logical sequence of the discussion. The conclusions drawn in the study are supported by practical measurements of process parameters obtained from industrial aluminum electrolyzers. Statistical data analysis methods were applied, and the results demonstrate good agreement with previously published literature. The study reveals the negative impact of an increased amplitude of metal surface waves in the electrolyzer bath, which occurs as a result of reduced metal levels, on the technical and economic indicators of aluminum production. It is shown that this phenomenon leads to process instability and efficiency losses. Furthermore, it is suggested that the technological disturbance known as the “non-quenchable anode effect” arises from a transition of the electrolyte flow regime from laminar to turbulent conditions. The theoretical inefficiency of the “slot” anode technology is also demonstrated, along with an explanation for the significant differences in current efficiency observed between electrolyzers equipped with prebaked anodes and those using Søderberg (self-baking) anodes.

Keywords: Electrolyzer, Aluminum, Electrolyte, Slot Anode, Metal Level, Interpolar Distance, Magnetohydrodynamic Instability, Current Efficiency, Specific Energy Consumption.

DOI: 10.25673/122157

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