METHOD OF UNLOADING OF URANIUM HEXAFLUORIDE FROM STEEL CONTAINERS AND UTILIZATION OF THESE CONTAINERS UTILIZATION Russian patent published in 2005 - IPC

FIELD: methods of unloading of uranium hexafluoride from steel containers and utilization of these containers.

SUBSTANCE: the invention is dealt with the methods of extraction of liquid and gaseous substances from steel containers and utilization of these containers. The invention allows extract uranium hexafluoride from steel containers of any volume filled in with uranium hexafluoride irrespective of the share of uranium isotope 235. The method provides for heating of the container in a closed space up to the temperature of uranium hexafluoride transition into a gaseous state. The process is conducted in a tight induction furnace with a metal segmented chilled crucible, a penetrable for an electromagnetic field metal transported chilled tray, a metal chilled inductor and a metal chilled body. The method is realized in two stages: heating of the container up to the temperature of 70-195°С and aging in the heated state under action of inductive currents at a frequency of 500-70000 Hz. The temperature of the crucible sections, the tray, the inductor and furnace body is kept in the limits of 70-195°С. Cooling of the crucible sections, the tray, the inductor and the furnace body is conducted with a high-boiling organic heat-transfer agent: diphenyl, orthoterphenyl and others.

EFFECT: the invention allows extract uranium hexafluoride from steel containers of any volume filled in with uranium hexafluoride irrespective of the share of uranium isotope 235.

4 cl, 2 ex