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| Study on Removal of Iron, Thorium and Rare-Earth from Uranium Solution in Chloridion System |
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Received:January 08, 2024
Revised:January 12, 2024
Accepted:January 23, 2024
Published Online:May 01, 2024
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| DOI：doi：10.3969/j.issn.1007-7545.2024.06.009 |
| KeyWord:uranium; iron; rare-earth; thorium; double salt precipitation; sodium jarosite |
| Author | Institution |
| CAO Linghua |
核工业北京化工冶金研究院 |
| ZHANG Haiyan |
核工业北京化工冶金研究院 |
| CAO Xiaohao |
核工业北京化工冶金研究院 |
| WANG Hao |
核工业北京化工冶金研究院 |
| LI Dabing |
核工业北京化工冶金研究院 |
| REN Yan |
核工业北京化工冶金研究院 |
| ZHOU Zhiquan |
核工业北京化工冶金研究院 |
| SHU Zujun |
核工业北京化工冶金研究院 |
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| Abstract: |
| The impurity ions of iron, thorium and rare-earth in uranium solution of chloride ion system were simultaneously removed with sodium sulfate by double salt precipitation method. The effects of sodium sulfate dosage, reaction temperature, reaction time and pH value on impurity removal were studied. The results show that the removal rate of iron, thorium and rare-earth is 99.62%, 99.42% and 98.27% respectively, and recovery rate of uranium is 99.87% under the optimum condition including Na2SO4 dosage of 160% of theoretical amount, reaction time of 2 h, reaction temperature of 95 ℃,and pH value of reaction system of 0.75—1.25. The method has the advantages of good impurity removal effect, low loss rate of uranium and easy separation. |
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