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CONTINUOUS PROCEDURE OF FLOBAL RECOVERY OF URANIUM, TORIO AND TRIO AND RARE LANDS CONTAINED IN A ACID AQUEOUS PHASE.
CONTINUOUS PROCEDURE OF FLOBAL RECOVERY OF URANIUM, TORIO AND TRIO AND RARE LANDS CONTAINED IN A ACID AQUEOUS PHASE.
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机译:酸性水相中铀,三碘甲烷和三碘甲烷和稀有土地的全球回收的连续程序。
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摘要
1. A continuous process for the total recovery of uranium IV and/or VI, thorium, yttrium and rare earths contained in an acid aqueous starting phase which is a crude wet-process phosphoric acid or else which was produced either from a residual phosphogypsum containing said metal species in an insoluble state by treatment by means of a strong inorganic acid in aqueous solution, or as an aqueous raffinate from extraction with water-insoluble or weakly water-soluble solvents of a crude wet-process phosphoric acid, characterised in that said acid aqueous solution is brought into contact with a homogenous organic phase comprising a di-(alkylphenyl) phosphoric acid which is free from mono-(alkylphenyl) phosphoric derivative and an inert organic solvent selected from aliphatic or aromatic hydrocarbons used alone or in the form of a mixture, whereby, as the result, after separation of the phases, there are collected a substantially exhausted aqueous phase and an organic phase charged with uranium, thorium, yttrium and rare earths.
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