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| Recovery of Gold and Palladium from Spent Vinyl Acetate Catalyst |
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Received:March 24, 2014
Revised:March 25, 2014
Accepted:March 26, 2014
Published Online:August 21, 2014
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| DOI：10.3969/j.issn.1007-7545.2014.09.011 |
| KeyWord:spent catalyst; gold; palladium; replacement; recover |
| Author | Institution |
| WU Xilong |
贵研资源易门有限公司 |
| WANG Huan |
贵研资源易门有限公司 |
| HE Xiaotang |
贵研资源易门有限公司 |
| LI Zixuan |
贵研资源易门有限公司 |
| XIAO Xiong |
贵研资源易门有限公司 |
| ZHAO Yu |
贵研资源易门有限公司 |
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| Abstract: |
| HCl/Cl2 system to dissolve pretreated spent vinyl acetate catalyst was studied. Gold was reduced from hydrochloric acid solution bearing gold and palladium by sponge palladium powder. Reduced sponge gold powder was boiled with dilute nitric acid to remove excess palladium powder. Reduction mother liquor was used to recover palladium by sodium sulfide replacement. The purity of final gold and palladium product is 99.95% above with recovery rate of 99.8% above. |
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