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| Recovery of Bismuth from Lead Anode Slime by Electrolysis |
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Received:September 15, 2013
Revised:September 15, 2013
Accepted:September 16, 2013
Published Online:February 12, 2015
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| DOI： |
| KeyWord:arsenic removal; lead anode slime; electrolysis; recovery |
| Author | Institution |
| CHEN Hansen |
Faculty of Metallurgical and Energy Engineering,Kunming University of Science and Technology;State Key Laboratory Breeding Base of Complex Nonferrous Metal Resources Cleaning Utilization in Yunnan Province;Metallurgical Processing Plant,Yunnan Copper Co Ltd |
| XU Ruidong |
Faculty of Metallurgical and Energy Engineering,Kunming University of Science and Technology |
| ZHU Yu |
Faculty of Metallurgical and Energy Engineering,Kunming University of Science and Technology |
| HE Shiwei |
Faculty of Metallurgical and Energy Engineering,Kunming University of Science and Technology |
| HUA Hongquan |
Metallurgical Processing Plant,Yunnan Copper Co Ltd |
| Li Yingwei |
Metallurgical Processing Plant,Yunnan Copper Co Ltd |
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| Abstract: |
| The extraction of bismuth and enrichment of other valuable metals such as gold and silver elements from lead anode slime that was important to improve the comprehensive utilization of metallurgical secondary resources. In this paper, lead anode slime of arsenic removal was cast into the crude bismuth which as anode on BiCl3-HCl-NaCl electrolyte system. The influences of temperature, current density, acidity, Bi3 concentration, the addition level of NaCl on the electrolysis process were discussed. The current efficiency, power consumption and purity of cathode product were investigated. Optimum process parameters, namely, temperature of 30℃, current density of 150A/m2, acidity of 80g/L, Bi3 concentration of 120g/L, the addition level of NaCl of 80g/L, were ascertained. The result show that under optimum conditions, dense sheet-shaped cathode bismuth was obtained, current efficiency reached 98%, the power consumption was about 136kW.h/tBi and purity of cathode bismuth reached 99.8%. |
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