METHOD OF PRODUCING HEXAFLUORIDES OF ACTINIDE ELEMENTS AND DEVICE FOR REALISING SAID METHOD Russian patent published in 2010 - IPC C01G43/06 C01G56/00 B01J19/24 

FIELD: chemistry.

SUBSTANCE: invention can be used in nuclear power engineering to process irradiated nuclear fuel and in isotope separation technology. Hexafluorides of actinide elements are obtained by treating compounds of actinide elements with a single stream of molten fluoride salts in two circulation loops with division of the gas phase of each of the loops. Non-sol forming compounds of actinide elements are treated in the first circulation loop with molten fluoride salts. The molten mass of oxides obtained in fluoride salts is fed into the second circulation loop and treated with fluorinating agents to obtain gaseous hexafluorides of actinide elements. The device for producing hexafluorides of actinide elements has a housing 1, in which there is a unit for dissolving actinide elements and a fluorinating unit in form of communicating vessels separated by a partition wall 2, with gas-separating chambers 13, 14 in the upper parts of each of the vessels. Each of the vessels is divided by a partition wall 4, 5 and is fitted with tuyeres 10, 11 for supplying reaction gases in the lower parts of the communicating vessels.

EFFECT: invention enables to obtain hexafluorides of actinide elements from thermally unstable non-sol forming compounds, including their aqueous solutions, separation of gas streams of products of fluorination and thermal decomposition of actinide elements.

2 cl, 1 dwg, 1 ex