FIELD: rare-earth metals extraction. SUBSTANCE: method involves adding to source solution a complexing agent in concentration of 0.1 mole/l. Then, extraction with carbamoylmethylphosphine oxides of general formula, shown in the patent application, is carried out. The extraction having been done, the organic phase is washed with mixture of nitric acid solution having concentration of 0.1 mole/l and complexing agent solution with concentration 0.1 mole/l. Complexing agent is selected from the following acids: acethydroxamic, oxalic, oxiethylene diphosphonic. Rare-earth elements are reextracted from washed organic phase by means of nitric acid solution in concentration of 0.01 mole/l. EFFECT: simplified process. 2 cl, 1 tbl
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