Recovery of rare earth metals (REMs) from primary raw material: sulphatization-leaching-precipitation-extraction


KARSHIGINA Z., ABISHEVA Z., BOCHEVSKAYA Y., Akcil A. U. , SARGELOVA E., SUKUROV B., ...More

MINERAL PROCESSING AND EXTRACTIVE METALLURGY REVIEW, vol.39, no.5, pp.319-338, 2018 (Peer-Reviewed Journal) identifier identifier

  • Publication Type: Article / Article
  • Volume: 39 Issue: 5
  • Publication Date: 2018
  • Doi Number: 10.1080/08827508.2018.1434778
  • Journal Name: MINERAL PROCESSING AND EXTRACTIVE METALLURGY REVIEW
  • Journal Indexes: Science Citation Index Expanded, Scopus
  • Page Numbers: pp.319-338

Abstract

The present study is devoted to the extraction of rare-earth metals (REMs) from a high-silica ore found in one of the deposits in Kazakhstan. The ore was processed in a mixture with sulfuric acid at 200 degrees C (sulphatization) and subsequently followed by water leaching of the sulphate product (sinter), REMs were extracted into the solution. Precipitation of the REMs-containing hydrate product from the sulfate solution was carried out with sodium hydroxide. In order to obtain the REMs-containing nitrate solution, the precipitate was dissolved in nitric acid. REMs solvent extraction from nitrate solutions was carried out with tributyl phosphate (TBP).