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| Study on Electrochemical Dissolution of W-Re Alloy Scrap |
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Received:May 21, 2020
Revised:May 25, 2020
Accepted:May 26, 2020
Published Online:August 17, 2020
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| DOI：doi：10.3969/j.issn.1007-7545.2020.09.011 |
| KeyWord:rhenium; W-Re alloy; rhenium-bearing scrap; electrochemical dissolution |
| Author | Institution |
| CHEN Kun-kun |
西北有色金属研究院 |
| CAO Qi-gao |
西北有色金属研究院 |
| ZHANG Bo-sheng |
西北有色金属研究院 |
| MENG Han-qi |
西北有色金属研究院 |
| RONG Wan |
西北有色金属研究院 |
| ZHAO Pan-chao |
西北有色金属研究院 |
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| Abstract: |
| In order to realize rapid and efficient dissolution of W-Re alloy scrap, W-25Re alloy scrap was electrochemical dissolved in NaOH alkaline system. The results show that concentration of W and Re in electrolytic solution is 46.4 g/L and 15.4 g/L respectively and dissolution rate of W and Re is 99.78% and 99.35% respectively under the conditions including cell voltage of 2.5 V, NaOH concentration of 100 g/L, electrolysis temperature of 30-40 ℃, and electrolysis time of 10 h. Anode current efficiency is 98.80%, and energy consumption is 2.29 kWh/kg. After electrolysis, anode’s surface is hilltype characterized by SEM. EDS analysis shows that W/Re mass percentage of anode is almost the same before and after electrolysis, and W dissolution rate is about three times of Re. |
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