Process and Device for direct conversion of uranium oxide to uranium hexafluoride

摘要

Describes a process and an apparatus for converting uranium hexafluoride directly in Uranium oxide. The First fact is Reaccionarcon UF6 vapor to form uo2f2.Then, to obtain a steady temperature profile in a tubular Furnace where uo2f2 is reduced to yconsecuentemente UO2, a product of high quality.Heat quantities delivered independently at least five successive areas theoven are adjusted to increase the temperature of the gas to a First value entr* * e 570 and 700 C, then a value included between 700 and 800 C * C * and then gradually decreases temperature.The apparatus for carrying out the process comprises in sequence: a reactorprovisto media introduction of UF6Water vapor and Nitrogen to cause the formation of uo2f2 hydrolysis; an oven tubularrotativo of pirohidrolisis destined to transform uo2f2 in Uranium oxide,Equipped with heating media Distributed enpor least five areas; and means of Conditioning oxide Powder.Media Introduction Injector Nozzle comprising a Concentric Three United respectively inputs of UF6, nitrogen and water vapor, the UF6 led the central nozzle.And being the nitrogen between the injected Water and the vaporde UF6.