Sintering uranium purification process

Details Sintering uranium purification process Sintering uranium purification process

1994-12-15

1996-06-18

Mai, Ngoclan

Specialized metallurgical processes, compositions for use therei

Processes

Producing or treating free metal

423260, 423261, C22B 6000

Patent

active

055273785

ABSTRACT:
Finely powdered urania scrap materials are subjected to sintering conditions (greater than 1600.degree. C.) in a hydrogen atmosphere for about 4 to 8 hours in order to remove impurities (such as Si, Fe, Ni, Sn, Cu, Na and Pb). The process upgrades the quality of the urania powder to where it can be used directly as clean scrap makeup, thereby avoiding expensive decontamination and recovery steps like solvent extraction. The novelty of the process is in the use of sintering conditions (greater than 1600.degree. C.) in a hydrogen atmosphere on finely divided powder to decontaminate urania materials.

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patent: 3087781 (1963-04-01), Levey et al.
patent: 3140151 (1964-07-01), Foltz et al.
patent: 3714061 (1973-01-01), Triggiani et al.
patent: 3806565 (1974-04-01), Langrod
patent: 3930787 (1976-01-01), DeHollander et al.
patent: 4122095 (1978-10-01), Watt et al.

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