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| Selective Leaching of Uranium from Betafite by Oxygen Pressure Leaching |
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Received:August 31, 2018
Revised:September 06, 2018
Accepted:September 07, 2018
Published Online:December 21, 2018
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| DOI：doi：10.3969/j.issn.1007-7545.2019.01.010 |
| KeyWord:oxygen pressure acid leaching; selective leaching; betafite; ilmenorutite |
| Author | Institution |
| LIU Hui-wu |
核工业北京化工冶金研究院 |
| HUANG Yong |
核工业北京化工冶金研究院 |
| JIA Xiu-min |
核工业北京化工冶金研究院 |
| Ma Jia |
核工业北京化工冶金研究院 |
| LIU Zhong-chen |
核工业北京化工冶金研究院 |
| SHI Liu-Yin |
核工业北京化工冶金研究院 |
| YANG Jian-fei |
核工业北京化工冶金研究院 |
| XIANG Qiu-lin |
核工业北京化工冶金研究院 |
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| Abstract: |
| Uranium was selective leached from complicated polymetallic ores betafite by oxygen pressure leaching. Dissolving performances of U, Nb, Ti and Fe were investigated. The results show that uranium leaching rate is 97.2%, and most of Nb, Ti and Fe remains in leaching residue under the optimum conditions including dosage of sulfuric acid of 240 g/kg, L/S of 1.5 mL/g, leaching temperature of 180 ℃, oxygen partial pressure of 0.5 MPa, and leaching time of 6 h. High efficiency selective extraction of uranium from complicated polymetallic ores is achieved. |
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