Reprocessing method by fluoride volatility process using...

Details Reprocessing method by fluoride volatility process using... Reprocessing method by fluoride volatility process using...

2008-01-29

2008-01-29

Nguyen, Ngoc-Yen (Department: 1754)

Chemistry of inorganic compounds

Radioactive

Transuranium compound

C423S253000, C423S258000, C423S249000, C423S259000, C423S003000, C423S019000

Reexamination Certificate

active

11097244

ABSTRACT:
Fluorine or a fluorine compound is subjected to a reaction with a spent oxide fuel to produce fluorides of uranium and plutonium, and recovering the fluorides using a difference in volatility behavior. The method includes steps of: subjecting a mixture of UO2and PuO2with hydrogen fluoride mixed with hydrogen to HF-fluorinate uranium and plutonium into UF4and PuF3; subjecting UF4and PuF3with a fluorine gas to F2-fluorinate uranium and plutonium into UF6and PuF6; and fractionating UF6and PuF6using a difference in phase change of obtained UF6and PuF6, removing a part of UF6, and volatilizing the remaining UF6and PuF6at the same time. By such a reprocessing method, PuF4hard to undergo a reaction is prevented from being formed as an intermediate fluoride, the material of a reactor is hard to be corroded, and a consumption of expensive fluorine gas is reduced.

REFERENCES:
patent: 3644104 (1972-02-01), Manevy et al.
patent: 3708568 (1973-01-01), Golliher et al.
patent: 3963564 (1976-06-01), Lecocq
patent: 4710222 (1987-12-01), FitzPatrick et al.
patent: 5076839 (1991-12-01), Boyd et al.
patent: 5118343 (1992-06-01), Coops
patent: 6442226 (2002-08-01), Venneri et al.
patent: 2001-153991 (2001-06-01), None
patent: 2108295 (1998-04-01), None

Affiliated with

Also associated with

Rating

Reprocessing method by fluoride volatility process using... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Reprocessing method by fluoride volatility process using..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Reprocessing method by fluoride volatility process using... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3920742