Method of making nuclear fuel pellets, comprising producing and

Details Method of making nuclear fuel pellets, comprising producing and Method of making nuclear fuel pellets, comprising producing and

1989-07-10

1990-11-20

Lechert, Jr., Stephen J.

Plastic and nonmetallic article shaping or treating: processes

Shaping or treating radioactive material

252 5, 252 6, 252125, G21C 2100

Patent

active

049717340

ABSTRACT:
A method of obtaining pellets of MxOy oxide, where M represents one or more elements used to make nuclear fuel pellets, as a means of obtaining very high density fritted pellets directly, i.e. without the intermediate powders being conditioned, comprising starting with a solution of soluble salts of the M elements, and treating them with hydrogen peroxide with the pH kept at from 2 to 2.5, in a continuous fluidized bed reactor comprising at least 3 superposed cylindrical sections of different diameters, the solutions in the central section being agitated vigorously, to obtain a precipitate which is subsequently calcined reduced, pressed then fritted.

REFERENCES:
patent: 4254086 (1981-03-01), Sanders
patent: 4522769 (1985-06-01), Connolly, Jr.
patent: 4530823 (1985-07-01), Dugua
Patent Abstract of Japan, vol. 4, No. 34 (C-3) [516], 3/22/80, p. 20 C 3; & JP-A-55 7527 (Mitsubishi Kinzoku K.K., 1/19/80.

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