Study on the optimal neutral leaching on a high carbonate sandstone-type uranium ore

Optimization of process parameters are key factors for leaching unramium ore, particularly, some high carbonate sandstone-type uranium ore with neutral leaching (CO 2  + O 2 ) method. In our study, batch leaching of uranium ore from Chaixinan region Qaidam Basin China were conducted under various NH...

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Bibliographic Details
Published in:Journal of radioanalytical and nuclear chemistry 2024, Vol.333 (8), p.4039-4048
Main Authors: Chen, Gongxin, Huang, Gonglin, Ma, Chengcui, Wei, Xuebin, Liu, Yuanyuan, Liu, Jinhui, Fang, Yong, Zhang, Yingying, Lai, Lina
Format: Article
Language:English
Subjects:
Carbon dioxide
Chemistry
Chemistry and Materials Science
Diagnostic Radiology
Gas pressure
Hadrons
Heavy Ions
Inorganic Chemistry
Leaching
Nuclear Chemistry
Nuclear Physics
Physical Chemistry
Process parameters
Recovery
Sandstone
Uranium
Uranium ores
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Summary:Optimization of process parameters are key factors for leaching unramium ore, particularly, some high carbonate sandstone-type uranium ore with neutral leaching (CO 2  + O 2 ) method. In our study, batch leaching of uranium ore from Chaixinan region Qaidam Basin China were conducted under various NH 4 HCO 3 concentrations, CO 2 :O 2 , gas pressure, and liquid–solid. The results indicated that pH and HCO 3 − are the key factors for uranium leaching recovery. The process parameters were HCO 3 − 800 mg/L, CO 2 :O 2 ratio 1:10, gas pressure 0.2 MPa, and liquid–solid 5:1, which achieved the highest uranium leaching recovery.
ISSN:0236-5731
1588-2780
DOI:10.1007/s10967-024-09546-y