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| Test on Copper Removal by Adding Sulfur in Tin Refining Process |
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Received:December 20, 2023
Revised:December 23, 2023
Accepted:January 03, 2024
Published Online:May 01, 2024
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| DOI：doi：10.3969/j.issn.1007-7545.2024.06.002 |
| KeyWord:crude tin refining; copper removal by adding sulfur; separation rate of tin and copper; direct yield of tin |
| Author | Institution |
| LIU Qingdong |
云南锡业股份有限公司 云南个旧 |
| ZHANG Huan |
昆明理工大学 云南昆明 |
| XIE Keng |
矿冶科技集团有限公司; |
| LI Yifu |
昆明理工大学 云南昆明 |
| LI Zhengyong |
云南锡业股份有限公司 云南个旧 |
| CHEN Yun |
云南锡业股份有限公司 云南个旧 |
| YUAN Haibin |
云南锡业股份有限公司 云南个旧 |
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| Abstract: |
| The effects of sulfur dosage, heating temperature and different forms of sulfur on the separation of tin and copper for the process of copper removal by adding sulfur in tin refining were systematically investigated. The results show that when the amount of flake sulfur is 1:1.2 and heating temperature is 300 ℃, the separation effect of tin and copper is the best, the copper content in residual tin is reduced to 0.007%, and the separation rate of tin and copper and the direct yield of tin are 99.18% and 99.52%, respectively. The process can effectively remove the impurity copper in the crude tin, and has the advantages of simple operation, low cost and high efficiency. |
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