Organic additives are used extensively in zinc electrowinning to assist in controlling the process. A cyclic voltammetry technique has been developed to provide a rapid, quantitative evaluation of the effectiveness of selected organic additives in minimizing the deleterious effects that impurities, such as antimony, have on zinc deposition. Results have indicated that animal glues are more effective than the other organic additives tested, which included several gums, enzymes, and amino acids, in relation to the current efficiency of zinc production. Of the various animal glues compared in this research, the most effective appeared to have average molecular weights in the 25,000 to 30,000 range. The effects of certain process variables on the test results have also been evaluated; these included the acid concentration of the zinc sulfate solution and the cathode preparation. © 1977 The Metallurgical of Society of AIME.


Materials Science and Engineering

International Standard Serial Number (ISSN)

1543-1916; 0360-2141

Document Type

Article - Journal

Document Version


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© 2023 Springer, All rights reserved.

Publication Date

01 Sep 1977

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Metallurgy Commons