Method of extraction reprocessing of restored uranium. RU patent 2354728.

FIELD: metallurgy.

SUBSTANCE: method of extraction reprocessing of restored uranium includes recovery of technetium (VII) in water solution of uranyl- nitrate by nitro-acid solution of diamide at presence of uranium (IV), uranium (VI) extraction by tributyl phosphate in organic vehicle. Additionally technetium (VII) recovery is implemented no more then during 20 minutes at value of excess nitrate-ion relative to its amount in uranyl-nitrate 0.15-0.94 mole/l.

EFFECT: method totally excludes formation of sediments of hydrolised uranium, provoking of renewal process shutdown of technetium, and extraction purification of uranium from technetium, requires less consumption of uranium and provides peak value of technetium reduction value.

2 cl, 1 tbl

IPC classes for russian patent Method of extraction reprocessing of restored uranium. RU patent 2354728. (RU 2354728):

G21C19/46 - Aqueous processes

C22B60/02 - Obtaining thorium, uranium or other actinides

C01G43 - Compounds of uranium

B01D11/04 - of solutions which are liquid

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