To Polarize or Not to Polarize: Practical Advice on How to Control Zinc Electrodeposition
The interaction of impurities and additives on zinc electrodeposition in electrowinning cellhouses are well documented, but generally not well understood. Operators attempt to maximize current efficiency by promoting zinc deposition, while simultaneously inhibiting hydrogen evolution. However, the impacts of impurities and additives are often difficult to understand and predict. Thus, plant personnel are left to ponder whether to polarize (add more gelatin) or not to polarize (add less gelatin). This joint paper by an industrial practitioner and academic scholar attempts to describe the interactions between impurities and additives in simple terms and to offer practical advice on how to control cellhouse operations.
M. S. Moats and T. Hymer, "To Polarize or Not to Polarize: Practical Advice on How to Control Zinc Electrodeposition," Minerals, Metals and Materials Series, pp. 111-122, Springer, Feb 2020.
The definitive version is available at https://doi.org/10.1007/978-3-030-37070-1_10
9th International Symposium on Lead and Zinc Processing, PbZn 2020, held in conjunction with the 149th Annual Meeting and Exhibition, TMS 2020 (2020: Feb. 23-27, San Diego, CA)
Materials Science and Engineering
Keywords and Phrases
Current Efficiency; Electrowinning; Impurities; Microstructure; Polarization; Zinc
International Standard Book Number (ISBN)
International Standard Serial Number (ISSN)
Article - Conference proceedings
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01 Feb 2020