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| Extraction and Enrichment of Rhodium from Spent Automotive Catalysts |
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Received:October 10, 2013
Revised:October 14, 2013
Accepted:October 14, 2013
Published Online:March 31, 2014
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| DOI：10.3969/j.issn.1007-7545.2014.04.012 |
| KeyWord:spent automotive catalyst; rhodium; pretreatment; chlorination process; zinc powder replacement |
| Author | Institution |
| Chen Shuai |
稀贵金属绿色回收与提取北京市重点实验室 |
| Cheng yao |
稀贵金属绿色回收与提取北京市重点实验室 |
| Zhang Jiantao |
稀贵金属绿色回收与提取北京市重点实验室 |
| Shen Shaobo |
稀贵金属绿色回收与提取北京市重点实验室 |
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| Abstract: |
| The effects of pretreatment on rhodium extraction from spent automotive catalyst with acidic sodium chlorate solution were investigated. Rhodium was replaced from chlorination solution by zinc powder and the optimum parameters were obtained. The results show that rhodium extraction is improved from 55.9% to 82.7% under the following optimum pretreatment conditions including oxygen pretreatment at 300 ℃ for 3 hours with oxygen flow rate of 200 mL/min and hydrogen pretreatment at 300 ℃ for 3 hours with hydrogen flow rate of 200 mL/min. Rhodium replacement rate is 85.6% under the optimum conditions including dosage of zinc powder of 20 g/L and reaction time of 40 min. |
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