Method for homogeneously mixing uranium/plutonium mixed oxide

Details Method for homogeneously mixing uranium/plutonium mixed oxide Method for homogeneously mixing uranium/plutonium mixed oxide

1998-09-09

2000-08-22

Husar, John M.

Solid material comminution or disintegration

Processes

By utilizing kinetic energy of projected or suspended material

241 19, 241 2412, B02C 1906

Patent

active

061058874

ABSTRACT:
A method for homogeneously mixing a uranium/plutonium mixed oxide which is used for the preparation of a uranium/plutonium mixed oxide fuel. The method comprises weighing a uranium oxide powder, a plutonium oxide powder, and a dry recovered powder prepared by grinding a uranium/plutonium mixed oxide sinter so as to give a predetermined plutonium enrichment; roughly mixing these powders together by means of a mixer; pulverizing and homogeneously mixing the roughly mixed powder by means of a jet mill; discharging the homogeneously mixed powder together with compressed air from the jet mill; and separating the mixed powder from the air by means of a first-stage cyclone to recover at least 90% of the discharged powder.

REFERENCES:
patent: 4565670 (1986-01-01), Miyazaki et al.
patent: 5219829 (1993-06-01), Bauer et al.
patent: 5336271 (1994-08-01), Ishizaka et al.
patent: 5841200 (1998-11-01), Bauer et al.

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