Two step dry uo2 production process utilizing a positive sealing valve means between steps
a technology of positive sealing valve and uo2 powder, which is applied in the direction of uranium compounds, nuclear elements, greenhouse gas reduction, etc., can solve the problems of difficult operation, large amount of liquid waste, and inefficient or economical current procedures for converting ufsub>6/sub>to uosub>2, and achieve tight temperature control of each process step.
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[0061]In the first reaction, the steam / UF6 ratio of 0.2 by weight with the temperature in the flame reactor of 400° C.
[0062]In the rotary kiln reaction, the steam / H2 ration=20 by weight, with the temperature held at a maximum 600° C. The steam / UO2 ratio is about 0.8 by weight
[0063]The UO2 powder surface area is equal to approximately 4 meters2 / gm. The final density of pressed and sintered pellets was approximately 98.5%.
[0064]A positive valve seal—star valve is used between the first reaction and the rotary kiln.
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