Sorption conversion of phosphate concentrates of rare-earth metals

Sorption conversion of phosphate concentrates of rare-earth metals Treatment of phosphate concentrates of rare-earth elements with low-concentration nitric acid in the presence of a sulfocation exchanger (sorption conversion) enables effective separation of rare-earth elements from phosphorus and fluorine. The effect of the nitric acid concentration and temperature on the efficiency of the sorption conversion of rare-earth element phosphates and the behavior of cationic impurities in the course of the sorption conversion were studied. It was shown that no selective transfer of thorium into solution could be achieved in the course of conversion and subsequent desorption with solutions containing nitric acid or ammonium nitrate. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Russian Journal of Applied Chemistry Springer Journals

Sorption conversion of phosphate concentrates of rare-earth metals

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Publisher
Pleiades Publishing
Copyright
Copyright © 2014 by Pleiades Publishing, Ltd.
Subject
Chemistry; Chemistry/Food Science, general; Industrial Chemistry/Chemical Engineering
ISSN
1070-4272
eISSN
1608-3296
D.O.I.
10.1134/S1070427214080059
Publisher site
See Article on Publisher Site

Abstract

Treatment of phosphate concentrates of rare-earth elements with low-concentration nitric acid in the presence of a sulfocation exchanger (sorption conversion) enables effective separation of rare-earth elements from phosphorus and fluorine. The effect of the nitric acid concentration and temperature on the efficiency of the sorption conversion of rare-earth element phosphates and the behavior of cationic impurities in the course of the sorption conversion were studied. It was shown that no selective transfer of thorium into solution could be achieved in the course of conversion and subsequent desorption with solutions containing nitric acid or ammonium nitrate.

Journal

Russian Journal of Applied ChemistrySpringer Journals

Published: Nov 26, 2014

References

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