Effect of impurities in recycling water on Pb-Ag anode passivation in zinc electrowinning process
Effect of impurities in recycling water on Pb-Ag anode passivation in zinc electrowinning process was investigated by linear scan voltammetry. Results show that passivation process would be affected in the presence of Cl − and F − in recycling water. It was highly advantageous to take H 2SO 4 concen...
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Published in | Transactions of Nonferrous Metals Society of China Vol. 21; no. 7; pp. 1665 - 1672 |
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Main Authors | , , , , , |
Format | Journal Article |
Language | English |
Published |
Elsevier Ltd
01.07.2011
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Subjects | |
Online Access | Get full text |
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Summary: | Effect of impurities in recycling water on Pb-Ag anode passivation in zinc electrowinning process was investigated by linear scan voltammetry. Results show that passivation process would be affected in the presence of Cl
− and F
− in recycling water. It was highly advantageous to take H
2SO
4 concentration as 180 g/L, Mn
2+ concentration as 3-5 g/L and F
− less than 42 mg/L. However, passivation process would not be affected when Cl
− concentration was less than 13 mg/L without any other ions, or when mass ratio of Mn
2+ to Cl
− existing in electrolyte was 8, where Cl
− concentration could reach up to 625 mg/L. |
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Bibliography: | ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 |
ISSN: | 1003-6326 |
DOI: | 10.1016/S1003-6326(11)60912-6 |