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RECOVERY OF RARE EARTH ELEMENTS FROM SULPHUROUS ACID SOLUTION BY SOLVENT EXTRACTION
RECOVERY OF RARE EARTH ELEMENTS FROM SULPHUROUS ACID SOLUTION BY SOLVENT EXTRACTION
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机译:溶剂萃取从亚硫酸溶液中回收稀土元素
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摘要
A process is described for the recovery of rare earth elements from a sulphurous acid solution containing them. The rare earth elements can be successfully separated and recovered by solvent extraction from the sulphurous acid solution, using an organo-phosphorus compound as extraction agent. Di-2-ethylhexyl phosphoric acid or 2-ethylhexyl phosphonic acid mono-ethylhexyl ester is preferred as extraction agent.
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