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| Study on Element Migration of Alkali Leaching in a Uranium Deposit in Xinjiang |
| Received:September 11, 2020 Revised:September 15, 2020 |
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| DOI：doi：10.3969/j.issn.1007-7545.2021.01.007 |
| KeyWord:sandstone uranium ore; alkaline leaching; oxidant; element migration |
| Author | Institution |
| WANG Ting-jian |
东华理工大学 |
| SUN Zhan-xue |
东华理工大学 |
| ZHOU Yi-peng |
东华理工大学 |
| CHENG Dan-dan |
安顺职业技术学院 |
| XU Ling-ling |
东华理工大学 |
| LIAO Bing-you |
东华理工大学 |
| WU Bing |
东华理工大学 |
| ZENG Qin |
东华理工大学 |
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| Download times: 1969 |
| Abstract: |
| In order to explore mining technological parameters of a in-situ leachable sandstone-type uranium deposit in Xinjiang and element migration law during leaching, alkaline flask tests with different HCO3- concentration gradients (0.6, 1, 3, 5 and 7 g/L) were carried out in laboratory, and influence of oxidizing agent on leaching was compared. The results show that uranium concentration in alkaline leaching is positively correlated with HCO3- concentration, and leaching effect is obviously better when oxidant is added. When HCO3- concentration is 0.6—1 g/L, uranium leaching effect is poor, but uranium concentration shows a sudden increase when HCO3- concentration rises to 3 g/L. However, when HCO3- concentration continues to rise, uranium concentration rises with a small growth. Considering the benefit, cost and other factors, it is concluded that the optimal concentration of HCO3- is 3g/L and adding oxidant is more beneficial to leaching. |
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