Eduardo P. Wiechmann, Pablo Aqueveque
To improve energy efficiency in copper electrowinning, different technologies have been developed. These include electrode positioning capping boards and 3-D grids, electrode spacers, and segmented internal bars. This paper introduces a design concept to avoid open electrode open circuits and reduce contact resistances. The design is based on a female tooth shape for the contacts on the intercel bar. This leads to improved electrode alignment, reduced contact resistances, easier contact cleaning, and reduced electrical contact with the electrodes. It results in lower operational temperature for the electrodes, reduced plant housekeeping, increased intercap for capping boards, and higher rate of grade A copper production. The comparative results presented should be a useful guideline for any type of intercel bar. Improvements in production levels and energy efficiency should reach 0.5% and 3%, respectively. A 3-D finite-element-based analysis and industrial measurements are used to verify the results.
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author={Eduardo P. Wiechmann and Pablo Aqueveque},
year={2026},
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