METHOD AND PLANT FOR PRODUCING TELLURIUM ISOTOPES Russian patent published in 2002 - IPC

FIELD: nuclear physics; medical and biological studies. SUBSTANCE: tellurium of natural isotope composition is placed in fluorination reactor 1. Reactor 1, condenser tank 3, and compressor 5 are evacuated to residual pressure not over 0.13 kPa. Reactor 1 is heated to 100-300 C and filled with fluorine. Compressor 5 is used for circulating fluorine through reactor 1 and condenser tank 3. Tellurium hexafluoride produced in the process is condensed in tank 3 and fed through receiver 8 to chain of gas centrifuges 6. Separated and isotope-enriched fractions of tellurium hexafluoride are accumulated in collectors 9n. Tellurium hexafluoride is conveyed in fraction-byfraction manner to reactors 10n through metering receivers 11n preevacuated to residual pressure not over 0.13 kPa. Hydrazine hydrate is fed from metering devices 12n to reactors 10n. Reaction mixture with precipitation is conveyed to flasks 14n, acidified to pH = 4-6, and aged for 2-3 h. Precipitation is separated by decanting, washed with water and alcohol, and dried out under vacuum in drying cabinet. In this way tellurium isotopes Te-120 through Te- 126, Te-128, and Te- 130 are obtained. EFFECT: enhanced stability of tellurium isotopes produced. 2 cl, 1 dwg, 1 ex