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| Research on Separation of Valued Metals from Lead Anode Slime |
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Received:January 11, 2013
Revised:January 11, 2013
Accepted:January 14, 2013
Published Online:June 19, 2013
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| DOI：10.3969/j.issn.1007-7545.2013.07.013 |
| KeyWord:lead anode slime; stack; oxidation; potential controlled leaching; tellurium; leaching rate; separation |
| Author | Institution |
| wuwenhua |
湖南稀土金属材料研究院 |
| liujibo |
湖南稀土金属材料研究院 |
| wangzhijian |
湖南稀土金属材料研究院 |
| suzhengfu |
湖南稀土金属材料研究院 |
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| Abstract: |
| After natural stacking oxidation, lead anode slime was leached with potential controlled at 80 ℃ for four hours in medium of 5 mol/L sulfuric acid added with sodium chloride (c(Cl-)=3 mol/L) and oxidant of sodium chlorate with ratio of solid to liquid of 5∶1. The results show that the leaching rates of copper, bismuth, antimony and arsenic are all above 99%, the leaching rate of tellurium is above 97%, and the leaching rates of gold and silver are below 1% under the potential controlled leaching conditions including stacking duration of lead anode slime of over 4 days, oxidant dosage of >20%, and potential of 40~500 mV. Copper, bismuth, antimony, arsenic and tellurium are successfully separated from gold and silver. |
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