Separation of rare earth elements from sulfate leach liquor by heterocyclic nitrogen compound

Separation of rare earth dements by solvent extraction has actually been widely used in various fields from analytical chemistry to hydrometallurgy. A representative ore sample obtained from Kadabora Batholiths-Eastern Desert of Egypt, containing the multiple oxides rare earth minerals： Samarskite,...

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Bibliographic Details
Published in:Journal of rare earths 2008-08, Vol.26 (4), p.544-551
Main Authors: GHADA, M. Mahmoud, NABIL, T. El Hazek, AHMAD, M. Farag, OMNEYA, M. El Hussaini
Format: Article
Language:English
Subjects:
extraction
precipitation
rare earths
stripping
triazolopyrimidine
反萃取
沉淀作用
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Summary:Separation of rare earth dements by solvent extraction has actually been widely used in various fields from analytical chemistry to hydrometallurgy. A representative ore sample obtained from Kadabora Batholiths-Eastern Desert of Egypt, containing the multiple oxides rare earth minerals： Samarskite, Fergusonite, Betafite, and Pyrochlore, was subjected to sulfuric acid leaching. Different sets of equilibrium loading experiments were carded out on a bench scale for the extraction of rare earths （cerium and yttrium） from the sulfate leach liquor using 8,9-dihydro[1,2,4]triazolo[1,5-a]quinazolin-6（TH）-one {TQ} dissolved in methylene chloride. Stripping was carded out by 20% sodium hydroxide. A rare earth cake was produced by oxalic acid precipitation. Its purity reached 87.3%.
ISSN:1002-0721
2509-4963
DOI:10.1016/S1002-0721(08)60134-9