Improving Current Efficiency Through Optimizing Electrolyte Flow in Zinc Electrowinning Cell

Wang, Hongdan; Xia, Wentang; Yang, Wei; Ren, Baozhu

doi:10.1002/9781119274681.ch29

Cited by 2 publications

(1 citation statement)

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“…The electrical energy utilized in the electrowinning process can be applied more efficiently and cost-effectively by improving current efficiency (Wang et al, 2016). A typical electrowinning process consumes approximately 60% to 80% of the total electrical energy for a metallurgical plant applying heap leaching (Gonzalez-Dominguez and Dreisinger, 1997).…”

Section: Introductionmentioning

confidence: 99%

A continuous quality improvement framework for electrowinning current efficiency

Moongo

Michael

2021

J. S. Afr. Inst. Min. Metall.

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SYNOPSIS Electrowinning consumes a substantial amount of electrical energy, and owing to the ever-increasing unit cost of electrical power there is a need to improve current efficiency in the process. This research was carried out to design a continuous quality improvement framework for improving electrowinning current efficiency by applying statistical process control (SPC) on an online industrial copper electrowinning operation. A sequential mixed research methodology was applied and a statistical software package utilized for analysing data. It was concluded that metallurgical short-circuits (hotspots) had the most significant effect on current efficiency. Bringing hotspots under statistical control resulted in a 5.40% improvement in current efficiency, which is equivalent to approximately 74 t of 99.999% pure grade A copper cathode production over a period of 1.5 months. Keywords: quality, continuous improvement, continuous quality improvement, statistical process control, and current efficiency.

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Section: Introductionmentioning

confidence: 99%