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| Study on Preparation of High Purity Platinum from Pt-Pd Concentrate |
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Received:December 25, 2020
Revised:January 13, 2021
Accepted:January 14, 2021
Published Online:May 20, 2021
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| DOI：doi：10.3969/j.issn.1007-7545.2021.06.013 |
| KeyWord:platinum; hydrolysis; direct recovery rate; reduction refining; hydrometallurgy |
| Author | Institution |
| SUN Jing-tao |
江西铜业贵溪冶炼厂 |
| HUANG Shao-yong |
江西铜业贵溪冶炼厂 |
| CHEN Shan-wen |
江西铜业贵溪冶炼厂 |
| LIU Yong-ping |
江西铜业贵溪冶炼厂 |
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| Abstract: |
| To address difficult treatment of nitric oxide and palladium in platinum products exceed standard due to incomplete denitration during prepare platinum from Pt-Pd concentrate by traditional process of dissolving with aqua regia and repeated precipitation with ammonium chloride, a new hydrometallurgy short process for extracting high purity platinum from Pt-Pd concentrate, sodium chlorate dissolution, hydrolysis, palladium removal with dimethylglyoxime and reduction refining with hydrazine hydrate , was proposed. Combined with industrial production practice, technological process and principle of new scheme were analyzed and the optimum reaction conditions in each stage were determined. The plant practices show that sponge platinum meeting standard of SM-99.95 with direct recovery rate of platinum of 98% is stably prepared. New process has the advantages of simple, strong adaptability to raw materials, low cost and easy to operate. |
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