Email this article Production of a Concentrate of Rare-Earth Metals from Wet-Process Phosphoric Acid
- Authors: Papkova M.V.1, Kon’kova T.V.2, Samieva D.A.1, Vasilenko S.A.1
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Affiliations:
- State Research and Design Institute of Rare-Metal Industry Giredmet
- Dmitry Mendeleev University of Chemical Technology of Russia
- Issue: Vol 91, No 3 (2018)
- Pages: 379-383
- Section: Inorganic Synthesis and Industrial Inorganic Chemistry
- URL: https://journals.rcsi.science/1070-4272/article/view/215707
- DOI: https://doi.org/10.1134/S1070427218030059
- ID: 215707
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Abstract
Desorption of rare-earth metals (REMs) (lanthanum, yttrium, and ytterbium), as well as iron and aluminum, from the KU-2 sulfocation exchanger phase with solutions of mineral acids and ammonium nitrate and sulfate of various concentrations was studied. New data on the distribution of REMs in these systems were obtained. It was found that it is the most rational to use an ammonium nitrate solution with concentration of 300 g L–1. It is recommended to precipitate a concentrate of REMs from the resulting desorbate with ammonium carbonate, with the subsequent separation of the suspension by the electrofl otation method.
About the authors
M. V. Papkova
State Research and Design Institute of Rare-Metal Industry Giredmet
Author for correspondence.
Email: masshka1@gmail.com
Russian Federation, Moscow
T. V. Kon’kova
Dmitry Mendeleev University of Chemical Technology of Russia
Email: masshka1@gmail.com
Russian Federation, Miusskaya pl. 9, Moscow
D. A. Samieva
State Research and Design Institute of Rare-Metal Industry Giredmet
Email: masshka1@gmail.com
Russian Federation, Moscow
S. A. Vasilenko
State Research and Design Institute of Rare-Metal Industry Giredmet
Email: masshka1@gmail.com
Russian Federation, Moscow
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