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| Study on Zn, Cd and Cl in the Dust of Tin Smelting by Two-stage Leaching |
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Received:December 07, 2021
Revised:December 20, 2021
Accepted:December 21, 2021
Published Online:April 27, 2022
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| DOI： |
| KeyWord:Two-stage;leaching, Tin;smelting dust, Zn;leaching, Cd;leaching, Cl;leaching |
| Author | Institution |
| xu wan li |
Tin Branch Company of Yunnan Tin Company Limited |
| zhang zhang |
Tin Branch Company of Yunnan Tin Company Limited |
| yuan haibin |
Tin Branch Company of Yunnan Tin Company Limited |
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| Abstract: |
| The dust from tin smelting rich in Zn, Cd and Cl return directly to the smelting process, will have a very negative effect on the yield and quality of crude tin. Therefore, impurities of the dust needs to be removed in advance before returning to smelting. In this study, by two-stage leaching to removed Zn, Cd and Cl in the dust respectively. The results show that 90.82% Of Cd, 95.78% of Cl and 39.68% of Zn are leached out of a water-soluble section under optimized test conditions; after the second stage sulfuric acid leaching, the comprehensive leaching rate of Zn, Cd and Cl reaches 79.83%, 99.31% and 96.02% respectively. |
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