Method of converting uranium dioxide into metallic uranium lump

Details Method of converting uranium dioxide into metallic uranium lump Method of converting uranium dioxide into metallic uranium lump

1991-08-01

1993-05-18

Walsh, Donald P.

Specialized metallurgical processes, compositions for use therei

Processes

Producing or treating free metal

75398, C22B 6000

Patent

active

052117421

ABSTRACT:
A method of converting uranium dioxide into a metallic uranium lump is provided The method comprises mixing a reducing agent comprised of metallic calcium, a slag solvent comprised of calcium chloride and a eutectic comprised of at least one member selected from the group consisting of barium chloride, lithium chloride, sodium chloride and potassium chloride into uranium dioxide to obtain a mixture, heating the mixture at a temperature not below the melting point of metallic uranium, separating resulting molten metallic uranium from a resulting molten slag based on a difference in specific gravity, and cooling the molten metallic uranium to produce metallic uranium as a solid lump.

REFERENCES:
patent: 1738669 (1929-12-01), Rich
patent: 3369889 (1968-02-01), Trent
patent: 4534792 (1985-08-01), Elliott
patent: 4717420 (1988-01-01), Duerksen
Preliminary Report, 1990 Fall Meeting of the Atomic Energy Society of Japan, published on Sep. 10, 1990.
Nuclear Chemical Engineering, Second Edition, pp. 274-283, by M. Benedict, T. H. Pigford et al. (1981, published by McGrow Hill Book Company).
The Chemistry of Uranium, pp. 122-131, by J. J. Katz and E. Rabinowich (1951, published by Constable & Co., Ltd.).

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