METHOD OF RECEIVING OF URANIUM DIOXIDE POWDER RECEIVING BY METHOD OF PYRO-HYDROLYSIS AND INSTALLATION FOR ITS IMPLEMENTATION Russian patent published in 2010 - IPC C01G43/25 C01G43/06 

FIELD: metallurgy.

SUBSTANCE: into preheated reaction chamber there is fed uranium hexafluoride, hydrogen and water vapour, wich react with each other with formation of uranyl fluoride powder. From below of chamber it is fed mixture of water vapour, hydrogen and nitrogen with creation over gas-distributing grid of area of fluidisated layer for reconditioning in it of received uranyl fluoride up to uranium dioxide. Into electric furnace it is introduced mixture of water vapour, hydrogen and nitrogen for providing of post reduction of unreacted powder. It is cooled and stabilised received powder. It is fed powder into milling and through magnetic separator it is charged into bin - moisture tester, in which it is measured moisture of powder by amount of skips of neutrons from irradiator to receiver with following rejection of finished powder with moisture more than 1 %.

EFFECT: refinement of received powder of uranium dioxide, by means of providing of moisture control of received powder and rejection of powder with moisture more than permissible.

11 cl, 2 dwg