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| Experimental Study on Copper Selective Removal from Lead Anode Slime |
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Received:November 18, 2011
Published Online:March 18, 2012
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| DOI：10.3969/j.issn.1005-7854.2011.02.0011 |
| KeyWord:anode slime ； lead anode slime； copper selective removal； comprehensive recovery |
| Author | Institution |
| RUAN Shu-feng |
Beijing General Research Institute of Mining and Metallurgy, Beijing , China |
| YIN Fei |
Beijing General Research Institute of Mining and Metallurgy, Beijing , China |
| WANG Cheng-yan |
Beijing General Research Institute of Mining and Metallurgy, Beijing , China |
| CHEN Yong-qiang |
Beijing General Research Institute of Mining and Metallurgy, Beijing , China |
| WANG Zhen-wen |
Beijing General Research Institute of Mining and Metallurgy, Beijing , China |
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| Abstract: |
| The process of Cu Selective Removal –Leaching Sb, Bi by Mixed Acid - Pb Removal by Nitric Acid- Precious Metal Recovery by Smelting Method is adopted to comprehensively recover valuable metals from lead anode slime. In this paper, the experimental study of Cu selective removal in this process is focused on. The optimal conditions of copper removal are determined as following: leaching temperature 28℃, initial acidity H2SO4 20g/L, air blasting and leaching 3 hours, liquid-solid ratio 5/1(mL/g), and additives of Fe3+ concentration 1g/L. Under these conditions, the average Cu removal rate is 91.30% with the average Sb leaching rate only 2.11% and the elements such as Bi, Pb, Au and Ag are not leached. This study obtains good copper selective removal result and resolves the problems such as metal incompletely separated and poor product quality by existing traditional hydrometallurgical process of lead anode slime. |
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