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| A New Process for Extraction Rhodium from Rhodium Concentrate with High Copper Content |
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Received:February 21, 2022
Revised:February 24, 2022
Accepted:February 28, 2022
Published Online:April 12, 2022
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| DOI：doi：10.3969/j.issn.1007-7545.2022.05.010 |
| KeyWord:rhodium concentrate with high copper content; chloropropyl hydrochloride; refine; rhodium powder |
| Author | Institution |
| XING Xiao-zhong |
金川集团铜业有限公司 |
| ZHANG Yan |
金川集团铜业有限公司 |
| ZHOU He-li |
金川集团铜业有限公司 |
| DU Yan-jun |
金川集团铜业有限公司 |
| PAN Cong-ming |
金川集团铜业有限公司 |
| WANG De-yu |
金川集团铜业有限公司 |
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| Abstract: |
| It has always been a difficult and hot spot of rhodium extraction technology to realize the short process and efficient extraction of rhodium from rhodium concentrate with high copper content. High copper rhodium concentrate is dissolved by HCl/Cl2, copper removal with oxalic acid, impurity removal with strong acid cation resin 001×7, and rhodium enrichment by hydrolysis. Then, chloropropyl hydrochloride (R4) is used as a new rhodium precipitant to directly precipitate rhodium from hydrolytic acid solution, so as to realize efficient separation of rhodium from other noble and base metals. The rhodium powder can be produced from precipitate after calcination or reduction, which meets the requirement of Grade SM-Rh99.95 in GB/T 1421—2018. The new process has the characteristics of short process flow, strong adaptability of raw materials, and easy to realize industrial production. |
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