Geochemistry and Acid Hydrometallurgy Accessibility of Uraninite from Mianhuakeng Granite-Hosted Uranium Deposit, South China
Abstract
:1. Introduction
2. Materials and Methods
2.1. Geological Setting and MHK Uranium Deposit
2.2. Analytical Methods
3. Result
3.1. Petrography and Mineralogy of the Uraninite
3.2. Geochemical Composition of Uraninite
3.3. The Age of Uraninite from the MHK Uranium Deposit
3.4. Acid Hydrometallurgy of Uraninite
4. Discussion
4.1. Chemical Composition of Uraninite
4.2. Pb Loss and Reliability of the Uraninite U–Th–Pb Chemical Ages
4.3. Acid Leaching Accessibility of Uraninite
5. Conclusions
Supplementary Materials
Author Contributions
Funding
Acknowledgments
Conflicts of Interest
References
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Spot No. | Uranium Mineral | Number of Measuring Points | Characteristic Value | UO2 | SiO2 | CaO | FeO | Al2O3 | Ce2O3 | Na2O | TiO2 | P2O5 | PbO | MgO | ZrO2 | NiO | K2O | ThO2 | Total |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
1-1, 1-2 | Uraninite | 25 | Maximum | 81.81 | 10.07 | 5.56 | 0.72 | 1.06 | 0.52 | 0.30 | 0.33 | 0.08 | 0.58 | 0.03 | 0.04 | 0.05 | n.d | n.d | 93.85 |
Minimum | 73.91 | 4.94 | 3.09 | 0.33 | 0.47 | 0.13 | 0.06 | 0.09 | 0.01 | 0.01 | n.d | n.d | n.d | n.d | n.d | 90.00 | |||
Average | 79.15 | 6.52 | 4.69 | 0.52 | 0.64 | 0.31 | 0.15 | 0.21 | 0.04 | 0.12 | 0.01 | 0.02 | 0.02 | n.d | n.d | 92.41 | |||
Standard Deviation | 2.51 | 1.60 | 0.76 | 0.11 | 0.18 | 0.10 | 0.05 | 0.09 | 0.02 | 0.16 | 0.01 | 0.02 | 0.02 | n.d | n.d | 1.30 | |||
Coffinite | 11 | Maximum | 70.94 | 18.42 | 2.64 | 0.30 | 1.24 | 0.60 | 0.21 | 0.14 | 0.53 | 0.61 | 0.09 | 0.03 | 0.03 | n.d | n.d | 87.95 | |
Minimum | 61.52 | 12.49 | 1.72 | 0.06 | 0.69 | 0.13 | n.d | 0.03 | 0.07 | n.d | n.d | 0.02 | 0.01 | n.d | n.d | 83.71 | |||
Average | 65.71 | 15.64 | 2.08 | 0.15 | 0.98 | 0.35 | 0.07 | 0.06 | 0.27 | 0.13 | 0.03 | 0.03 | 0.02 | n.d | n.d | 85.38 | |||
Standard Deviation | 2.51 | 1.77 | 0.32 | 0.08 | 0.17 | 0.16 | 0.07 | 0.05 | 0.17 | 0.24 | 0.03 | 0.01 | 0.01 | n.d | n.d | 1.21 | |||
2-1 | Uraninite | 17 | Maximum | 81.18 | 8.02 | 6.16 | 0.77 | 0.55 | 0.48 | 0.23 | 0.15 | 0.06 | 0.09 | 0.04 | 0.05 | 0.09 | n.d | n.d | 93.92 |
Minimum | 77.35 | 4.95 | 4.49 | 0.36 | 0.39 | 0.17 | 0.07 | 0.07 | 0.01 | 0.01 | 0.01 | 0.01 | n.d | n.d | n.d | 91.43 | |||
Average | 79.93 | 5.70 | 5.67 | 0.59 | 0.46 | 0.30 | 0.14 | 0.10 | 0.03 | 0.05 | 0.02 | 0.03 | 0.04 | n.d | n.d | 93.01 | |||
Standard Deviation | 0.87 | 0.68 | 0.41 | 0.11 | 0.06 | 0.08 | 0.04 | 0.02 | 0.02 | 0.03 | 0.01 | 0.02 | 0.04 | n.d | n.d | 0.62 | |||
Coffinite | 3 | Maximum | 69.16 | 17.13 | 2.19 | 0.19 | 0.96 | 0.54 | n.d | n.d | 0.25 | n.d | 0.05 | n.d | n.d | n.d | n.d | 87.32 | |
Minimum | 63.93 | 14.07 | 1.99 | 0.10 | 0.46 | 0.12 | n.d | n.d | 0.10 | n.d | 0.02 | n.d | n.d | n.d | n.d | 83.95 | |||
Average | 66.08 | 16.05 | 2.07 | 0.14 | 0.74 | 0.33 | n.d | n.d | 0.18 | n.d | 0.03 | n.d | n.d | n.d | n.d | 85.67 | |||
Standard Deviation | 2.74 | 1.71 | 0.11 | 0.05 | 0.25 | 0.21 | n.d | n.d | 0.08 | n.d | 0.02 | n.d | n.d | n.d | n.d | 1.68 |
Spot No. | Oxygen Coefficient, k0 | Mass Percentage, % | ||
---|---|---|---|---|
UO2 | U3O8 | UO3 | ||
Grain 1 (pristine) | 2.72 | n.d | 83.65 | 16.35 |
Grain 1 (acid leaching) | 2.79 | n.d | 60.95 | 39.05 |
Grain 2 (pristine) | 2.84 | 15.94 | n.d | 84.06 |
Grain 2 (acid leaching) | 2.91 | 9.30 | n.d | 90.70 |
Grain 3 (pristine) | 2.90 | 9.92 | n.d | 90.08 |
Grain 3 (acid leaching) | 2.93 | 6.99 | n.d | 93.01 |
Grain 4 (pristine) | 2.89 | 10.89 | n.d | 89.11 |
Grain 5 (pristine) | 2.78 | n.d | 65.32 | 34.68 |
Grain 6 (pristine) | 2.85 | 15.15 | n.d | 84.85 |
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Wang, J.; Sun, Z.; Li, G.; Liu, Y.; Zhou, Z.; Wang, X.; Zheng, Z.; Zhou, Y.; Zhao, K.; Xiang, L.; et al. Geochemistry and Acid Hydrometallurgy Accessibility of Uraninite from Mianhuakeng Granite-Hosted Uranium Deposit, South China. Minerals 2020, 10, 747. https://doi.org/10.3390/min10090747
Wang J, Sun Z, Li G, Liu Y, Zhou Z, Wang X, Zheng Z, Zhou Y, Zhao K, Xiang L, et al. Geochemistry and Acid Hydrometallurgy Accessibility of Uraninite from Mianhuakeng Granite-Hosted Uranium Deposit, South China. Minerals. 2020; 10(9):747. https://doi.org/10.3390/min10090747
Chicago/Turabian StyleWang, Jian, Zhanxue Sun, Guangrong Li, Yajie Liu, Zhongkui Zhou, Xuegang Wang, Zhihong Zheng, Yipeng Zhou, Kai Zhao, Ling Xiang, and et al. 2020. "Geochemistry and Acid Hydrometallurgy Accessibility of Uraninite from Mianhuakeng Granite-Hosted Uranium Deposit, South China" Minerals 10, no. 9: 747. https://doi.org/10.3390/min10090747