| 摘要 |
Cerium and rare earth values are separated from an aqueous medium comprised thereof, by (i) anodically electrolytically treating such aqueous medium and oxidizing the Ce (III) values therein to Ce (IV) values, (ii) extracting said electrolyzed aqueous medium with a selective organic extractant for said Ce (IV) values, and permitting the extracted medium to separate into an organic phase enriched in Ce (IV) values and a product aqueous phase enriched in rare earth values, (iii) reducing the Ce (IV) values in said organic phase to Ce (III) values and admixing same with an aqueous medium, and (iv) permitting said admixture to separate into an organic phase and a product aqueous phase enriched in Ce (III) values. |
