METHOD OF ISOTOPIC RECOVERY OF REGENERATED URANIUM Russian patent published in 2010 - IPC G21C19/42 B01D59/20 

FIELD: power industry.

SUBSTANCE: separation of uranium isotopes in the form of hexafluoride of isotopic mixture of uranic regenerate on the installation consisting of two subsequent gas centrifugal stages; at that, hexafluoride of uranium recovered as per isotopic composition is obtained in flow of the second stage bleeding powered with heavy fraction of the first stage, which has been obtained during enrichment of light fraction of the first stage with ²³⁵U isotope to the concentration not exceeding 20 wt %. Isotopes are separated at the first stage so that there obtained is concentration of isotopes ²³²U and ²³⁴U in heavy fraction of the first stage, which provide required concentrations ²³²U and ²³⁴U at the second stage bleeding, and isotopes are separated at the second stage till the second stage bleeding flow is saturated with isotope ²³⁵U, which ensures the required concentration of isotope ²³⁶U in the second stage bleeding flow.

EFFECT: eliminating hazardous high concentrations of fissionable isotope ²³⁵U.