Kinetics of Uranium Extraction from Uranium Tailings by Oxidative Leaching
JOM, ISSN: 1543-1851, Vol: 68, Issue: 7, Page: 1990-2001
2016
- 20Citations
- 7Captures
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Article Description
Extraction of uranium from uranium tailings by oxidative leaching with hydrogen peroxide (HO) was studied. The effects of various extraction factors were investigated to optimize the dissolution conditions, as well as to determine the leaching kinetic parameters. The behavior of HO in the leaching process was determined through scanning electron microscopy-energy dispersive x-ray spectroscopy (SEM-EDX) and x-ray diffraction analysis of leaching residues. Results suggest that HO can significantly improve uranium extraction by decomposing the complex gangue structures in uranium tailings and by enhancing the reaction rate between uranium phases and the leaching agent. The extraction kinetics expression was changed from 1 − 3(1 − α) + 2(1 − α) = K(HSO)(S/L)(R)et (t ≥ 5) to 1 − 3(1 − α) + 2(1 − α) = K(HSO)(S/L)(R)et (t ≥ 5) by the addition of HO in the leaching process. The use of HO in uranium leaching may help in extracting uranium more efficiently and rapidly from low-uranium-containing ores or tailings.
Bibliographic Details
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=84969801341&origin=inward; http://dx.doi.org/10.1007/s11837-016-1952-8; http://link.springer.com/10.1007/s11837-016-1952-8; http://link.springer.com/content/pdf/10.1007/s11837-016-1952-8; http://link.springer.com/content/pdf/10.1007/s11837-016-1952-8.pdf; http://link.springer.com/article/10.1007/s11837-016-1952-8/fulltext.html; https://dx.doi.org/10.1007/s11837-016-1952-8; https://link.springer.com/article/10.1007/s11837-016-1952-8
Springer Science and Business Media LLC
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