METHOD OF SEPARATING GAS MIXTURE UF-BrF-IF INTO COMPONENTS Russian patent published in 2004 - IPC

FIELD: uranium compounds technology. SUBSTANCE: UF₆-BrF₃-IF₅ mixtures are brought into contact with sodium fluoride at 70-120 C to adsorb simultaneously uranium hexachloride and bromine trifluoride, non-adsorbed iodine pentafluoride being withdrawn from the system. After that, two-step desorption at reduced pressure is conducted: first, bromine trifluoride is desorbed at 190-220 C and then desorption of uranium hexachloride is performed. First-step pressure is UF₆-BrF₃-IF₅ 10 mm Hg and pressure in the second step is 10-20 mm Hg. Each of isolated components can be reused. EFFECT: lack of gaseous and liquid wastes resulting in absence of environmental problems. 2 cl, 2 dwg, 1 tbl