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| Numerical Simulation of Relationship between Fe3+ and Leached Uranium during Acid Leaching |
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Received:October 16, 2022
Revised:November 07, 2022
Accepted:November 08, 2022
Published Online:February 13, 2023
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| DOI：doi：10.3969/j.issn.1007-7545.2023.03.011 |
| KeyWord:in-situ leaching of uranium; dissolution rate; growth rate; numerical simulation |
| Author | Institution |
| LIU Chun-yu |
东华理工大学 |
| LI Xun |
东华理工大学 |
| LUO Yue |
东华理工大学 |
| GAO Bai |
东华理工大学 |
| WU Hui |
东华理工大学 |
| LIU Ya-Zhou |
东华理工大学 |
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| Abstract: |
| In order to explore the leaching situation of uranium with Fe3+ as oxidant in acid leaching process, the simulation software PHREEQE was used to establish a model to observe the concentration and migration changes of each component of the leaching solution, so as to reveal the relationship between the oxidant Fe3+ and leached uranium. The results show that as an oxidant, Fe3+ promotes the dissolution of uranium ore and the appearance of Fe2+. With the end of uranium leaching, Fe3+ concentration tends to be stable. The dissolution rate of uranium ore is closely related to the growth rate of Fe3+ and Fe2+. When the concentration of Fe3+ rises rapidly, Fe2+ concentration rises and dissolution of uranium ore accelerates. As the dissolution rate of uranium ore drops to zero, the growth rate of Fe2+ approaches zero, and the growth rate of oxidant Fe3+ also drops to zero. |
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