Process for producing high purity zirconium and hafnium

Details Process for producing high purity zirconium and hafnium Process for producing high purity zirconium and hafnium

1985-09-26

1987-05-26

Lechert, Jr., Stephen J.

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

75 844, 266171, 266205, 266271, 266905, 373109, 373110, 373112, 373115, 423 69, 423 76, C22B 3410

Patent

active

046682872

ABSTRACT:
This is a process for producing high quality zirconium or hafnium sponge. It is especially useful for producing the very high purity zirconium which may be used to line the inner surface zirconium of Zircaloy tubing for nuclear fuel rods. The process uses a combination reduction-distillation vessel which is directly fed with zirconium or hafnium tetrachloride from a molten salt sublimer. A precharge of magnesium chloride is used to prevent reduction of metal outside the inner liner, and thereby facilitate removal of the inner liner after reduction and distillation. The agitator for the molten salt sublimer preferably utilizes a molten metal seal around the agitator shaft.

REFERENCES:
patent: 2787539 (1957-04-01), Conklin
patent: 2916362 (1959-12-01), Horrigan
patent: 3057682 (1962-10-01), Groce
patent: 3715205 (1973-02-01), Ishizuka
patent: 3966458 (1976-06-01), Spink
patent: 3966460 (1976-06-01), Spink
patent: 4127409 (1978-11-01), Megy
patent: 4200492 (1980-04-01), Armijo et al.
patent: 4285724 (1981-08-01), Becker et al.
patent: 4368072 (1983-01-01), Siddall
patent: 4372817 (1983-02-01), Armijo et al.
patent: 4447045 (1984-05-01), Kimura et al.
patent: 4556420 (1985-12-01), Evans et al.

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