Russian Metallurgy (Metally)

, Volume 2015, Issue 9, pp 685–688 | Cite as

Sorption from slurries—A promising method in the processing of rare earth elements

  • V. D. Kosynkin
  • T. V. Molchanova
  • V. A. PeganovEmail author
  • E. V. Zharova


The article presents the results of sorptive extraction of rare-earth elements (REE) from the solutions and slurries of complex salt compositions using sulfocationites and carboxyl cationites with a predominant content of the latter on laboratory and pilot scales. Upon REE sorption from hydrate slurry on KM-2p carboxyl cationite, the REE extraction rate of at least 98% has been achieved, and the following factors of ΣREE purification from impurities have been obtained: KREE/Al = 1.7, KREE/Th = 2.3, KREE/Ca ≈ 20, KREE/Zr = 15, KREE/Fe ≈ 40, and KREE/P,F ≈ 90. It is demonstrated that the REE capacity of cationite SG-1m is higher than that of cationite KM-2p by 10%; moreover, the content of thorium on KM-2p cationite is lower by 2.5 times and that of zirconium by 6 times. After the recovery of saturated cationites by 1.5–2.0 M HNO3 solutions, strippants have been extracted with a REE concentration of 15–20 g/L. The factors of REE purification from impurities upon desorption are as follows: KREE/Al = 2.5, KREE/Th = 0.5, KREE/Ca = 5.3, KREE/Zr = 5.6, and KREE/Fe = 0.8. The REE recovery rate is ≥99%.


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  1. 1.
    T. V. Molchanova, V. A. Peganov, and E. V. Zharova, “Technology of sorptive extraction of REE from offgrade technogenic raw materials,” in Rare Earth Elements: Geology, Chemistry, Production, and Application: Proceedings of International Conference (OAO VNIIKhT, Moscow, 2012), pp. 120–121.Google Scholar
  2. 2.
    Chemistry of Uranium, Ed. by B. N. Laskorin (Nauka, Moscow, 1981).Google Scholar
  3. 3.
    V. V. Shatalov, V. A. Peganov, T. V. Molchanova, and I. D. Akimova, “Ion exchanging processes in processing of uranium ores,” Gorn. Zh., No. 6, 65–70 (2009).Google Scholar
  4. 4.
    D. I. Smirnov, T. V. Molchanova, L. I. Vodolazov, and V. A. Peganov, “Sorptive extraction of rare earth elements, yttrium and aluminum from red muds,” Tsvetn. Met., No. 8, 64–69 (2002).Google Scholar
  5. 5.
    G. Ya. Pushkina, P. P. Mel’nikov, V. A. Malikov, et al., “Application of KMDF ion exchanger for extraction of REE from phosphate and sulfate solutions,” Vopr. At. Nauki Tekh., Ser.: Khimicheskie Problemy Yadernoi Energetiki 6 (1992).Google Scholar
  6. 6.
    L. I. Evteeva, Production and Processing of Rare Earth Elements: Report (Karabolta, Kirgiz Republic, 2010), pp. 57–63.Google Scholar

Copyright information

© Pleiades Publishing, Ltd. 2015

Authors and Affiliations

  • V. D. Kosynkin
    • 1
  • T. V. Molchanova
    • 1
  • V. A. Peganov
    • 1
    Email author
  • E. V. Zharova
    • 1
  1. 1.Russian Research Institute for Chemical Technology (VNIIKhT)MoscowRussia

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