METHOD OF FLUORINATING OXIDES OF ACTINIDE ELEMENTS TO HEXAFLUORIDES AND DEVICE TO THIS END Russian patent published in 2009 - IPC C01G43/06 B01J19/24 B01J10/00 

FIELD: chemistry.

SUBSTANCE: present invention relates to inorganic chemistry, particularly to methods of fluorinating oxides of actinide elements and can be used in the atomic industry in nuclear reprocessing, as well as in the technology of separating isotopes. The method of fluorinating oxides of actinide elements to hexafluorides involves melting oxides of actinide elements in fluorine layers, passing gaseous fluorinating agent through the melt and oxidation with subsequent removal of gaseous hexafluorides from the reaction zone with constant circulation of the melt from the processing zone to the melting zone. The fluorinating process is carried out in a foam-liquid layer. The fluorinating agent used is tetrafluoromethane mixed with oxygen. Removal of actinide elements in form of hexafluorides into the gas phase from molten fluorine salts in the zone of their treatment with reaction gases can be partial or complete. The device for fluorinating oxides of actinide elements to hexafluorides has a unit for input of fluorine salts and oxides of actinide elements, a reactor for melting the oxides in a melt of fluorine salts and a reactor for treating the obtained melt with gases, a device for inlet of gases, and a liquid phase baffle plate.

EFFECT: reactor for melting and the reactor for treating the melt are in the same housing and are separated by a partition wall on the communicating vessels principle.

3 cl, 1 dwg, 1 ex