METHOD OF EXTRACTION OF MOLYBDENE FROM RADIOACTIVE SOLUTIONS Russian patent published in 2017 - IPC G21F9/04 

FIELD: chemistry.

SUBSTANCE: method of extraction of molybdenum from radioactive solutions involves the extraction of molybdenum by solutions of hydroxamic acids dissolved in a mixture of not more than 30% alcohol with paraffinic hydrocarbons with a ratio of volumes of organic and aqueous phases of less than 0.1. The molybdenum and iodine extract is washed with a small volume of nitric acid solution with the addition of metal nitrates from the series: Hg (II), Cu (II), Ag (I), Pb (II), after which the extract is washed with a solution of nitric acid. The extrusion of molybdenum is carried out in a solution of nitric acid with heating upon the addition of a water-soluble complexing agent to be destroyed before or after such treatment, in the latter case with repeated re-extraction into the same solution. The destruction of hydroxamic acid in the extract can be accelerated by using an oxidation inducer. The final molybdenum re-extract is washed with an extractant.

EFFECT: invention allows to increase the concentration of molybdenum with its simultaneous purification from non-extractable impurities.

7 cl, 8 ex