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Vol 214
Pages:
39
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RUS

Extraction of rare earth metals of di-2-ethylhexyl phosphoric acid from phosphoric solutions

Authors:
O. V. Cheremisina
About authors
  • National Mineral Resources University (Mining University)
Date submitted:
2014-10-27
Date accepted:
2014-12-28
Date published:
2015-04-01

Abstract

The paper is devoted to solvent extraction of rare earth metals exemplified by Сe, Y from standard test and industrial solutions of wet-process phosphoric acid with di-2-ethylhexyl phosphoric acid used as extractant. The mechanism of rare earth metals extraction with di-2-ethylhexyl phosphoric acid was determined and studied on the basis of calculated thermodynamic characteristics. The paper considers the influence of impurity ions (Fe 3+ , Mg 2+ , ) on extraction of rare earth metals using industrial solutions. It has also been determined that for a stripping process the use of sulfuric acid solutions in concentration of 2 mol/l is the most preferable.

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References

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