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| Separation of Tin and Antimony from Pb-Sn-Sb Smelting Slag |
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Received:August 04, 2015
Revised:August 10, 2015
Accepted:August 11, 2015
Published Online:December 24, 2015
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| DOI：10.3969/j.issn.1007-7545.2016.01.001 |
| KeyWord:Pb-Sn smelting slag; tin; antimony; separation; alkalinity leaching |
| Author | Institution |
| YANG Wei-jiao |
北京矿冶研究总院 |
| Liu Yong |
湖南黄金集团 |
| WANG Cheng-yan |
北京科技大学冶金与生态工程学院 |
| ZHAO Feng |
北京矿冶研究总院 |
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| Abstract: |
| Separation of tin and antimony from Pb-Sn-Sb smelting slag was investigated by alkalinity leaching method. The results show that tin leaching rate is 85% above and antimony leaching rate is almost zero under the optimum conditions including initial concentration of NaOH of 120~150 g/L, ratio of liquid to solid of 2︰1, temperature of 40 ℃, dosage of oxidizing agent of 3%~5% of raw materials, and leaching duration of 2 h. Pb-Sb enriched leaching residue is returned to Pb-Sb alloy smelting process. Sodium stannate with 40.7% Sn-containing is recrystallized from Pb-Sb leaching lixivium to realize recovery of tin. |
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