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| Study on Separation of Rubidium and Cesium from Lepidolite Leaching Solution |
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Received:January 24, 2019
Revised:January 28, 2019
Accepted:January 29, 2019
Published Online:May 17, 2019
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| DOI：doi：10.3969/j.issn.1007-7545.2019.06.007 |
| KeyWord:lepidolite; leaching solution; rubidium; cesium; extracting method |
| Author | Institution |
| Zhang Yongxing |
中国地质科学院郑州矿产综合利用研究所 |
| Yi Yuejun |
中国地质科学院郑州矿产综合利用研究所 |
| Zhang Lizhen |
中国地质科学院郑州矿产综合利用研究所 |
| Tan Xiumin |
中国地质科学院郑州矿产综合利用研究所 |
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| Abstract: |
| Rubidium and cesium were separated from purified lepidolite leaching solution by solvent extraction method. Effects of concentration of extracting agent, alkalinity and extraction phase ratio O/A on separation of rubidium and cesium were discussed. Extraction rate of rubidium and cesium is 90.0% and 32.0% respectively under the optimum conditions including concentration of extractant of t-BAMBP of 0.7 mol/L, O/A=1, alkalinity of 0.3 mol/L, and extracting time of 10 min with cyclohexane and sulfonated kerosene as diluent. Rubidium elusion rate is 80.0% and cesium losing rate during washing is 9.36% from loaded organic phase under the optimum conditions including washing agent concentration of NaCl of 0.1 mol/L, O/A=1, and washing time of 10 min. |
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