Title

To Polarize or Not to Polarize: Practical Advice on How to Control Zinc Electrodeposition

Abstract

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.

Meeting Name

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)

Department(s)

Materials Science and Engineering

Keywords and Phrases

Current Efficiency; Electrowinning; Impurities; Microstructure; Polarization; Zinc

International Standard Book Number (ISBN)

978-303037069-5

International Standard Serial Number (ISSN)

2367-1181

Document Type

Article - Conference proceedings

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2020 The Minerals, Metals & Materials Society, All rights reserved.

Publication Date

01 Feb 2020

Share

 
COinS