Pyrochemical processes for producing Pu, Th and U metals with re

Details Pyrochemical processes for producing Pu, Th and U metals with re Pyrochemical processes for producing Pu, Th and U metals with re

1992-09-08

1994-03-01

Walsh, Donald P.

Specialized metallurgical processes, compositions for use therei

Processes

Producing or treating free metal

75395, 75397, 75399, 423 5, 423 211, 423155, 204 61, 204 70, 204130, 204 15, C22B 6002

Patent

active

052903370

ABSTRACT:
In the pyrochemical reduction of uranium dioxide or other actinide metal oxides by reaction with magnesium, magnesium oxide byproduct is produced. The use of a salt flux comprising magnesium chloride and a rare earth element trichloride such as neodymium chloride is disclosed. The neodymium chloride reacts with magnesium oxide to form magnesium chloride and neodymium oxychloride. The resulting magnesium chloride-neodymium oxychloride salt mixture can readily be subjected to electrolysis to regenerate magnesium and neodymium chloride for reuse in the pyrochemical reduction process. Other uses of the magnesium chloride-neodymium chloride salt flux are also proposed.

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patent: 5198078 (1993-03-01), Gale et al.

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