Use of extraction chromatography for thorium purification from eskişhir-beylikahir thorium-REEs ore deposit

HİÇSÖNMEZ Ü., Eral M.

Radiochimica Acta, vol.89, no.11-12, pp.805-809, 2001 (SCI-Expanded, Scopus) identifier

  • Publication Type: Article / Abstract
  • Volume: 89 Issue: 11-12
  • Publication Date: 2001
  • Journal Name: Radiochimica Acta
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.805-809
  • Keywords: Earth element, Extraction chromatography, Rare, Thorium, TOPO
  • Manisa Celal Bayar University Affiliated: Yes

Abstract

The extraction chromatography method was used to separate thorium from acidic leach solution. The separation of thorium was realized on silica gel column coated with tri-octlyphosphine oxide (TOPO). The extraction yield of thorium on this column from nitric acid leach solution is 91.9%. Then thorium was eluted by using 0.5 M H2SO4 solution, and elution yield was determined as 96.5%. The chemical analysis of H2SO4 fractions indicated that thorium was concentrated and purified succesfully by this method. As a result, thorium was recovered in dilute leach solution with a yield of 81.0±6.8%.