Surface passification of a group IVB metal sponge regulus

Details Surface passification of a group IVB metal sponge regulus Surface passification of a group IVB metal sponge regulus

1993-02-24

1994-05-03

Rosenberg, Peter D.

Specialized metallurgical processes, compositions for use therei

Processes

Producing or treating free metal

75618, C22B 3414

Patent

active

053083784

ABSTRACT:
A zirconium sponge regulus from a Kroll reduction process is contaminated with zirconium chlorides, unreacted magnesium and magnesium chloride. The sponge regulus is vacuum distilled at a temperature of at least 800.degree. C. and then cooled. Before opening the distillation vessel and exposing the sponge regulus to the atmosphere, the vessel is backfilled with a gas comprising 25% to 75%, by volume, carbon dioxide, carbon monoxide or mixtures thereof, with the balance an inert gas and impurities associated therewith.
The sponge regulus is less susceptible to fires when exposed to the air or crushing in downstream processing, and the metal surfaces of the sponge regulus are passivated whereby the overall contamination of the sponge is significantly reduced.

REFERENCES:
patent: 4329168 (1982-05-01), Rubio
patent: 4659377 (1987-04-01), Foerster
patent: 5062887 (1991-11-01), Abodishish et al.
patent: 5078789 (1992-01-01), Abodishish et al.
patent: 5080859 (1992-01-01), Abodishish et al.
patent: 5100465 (1992-03-01), Abodishish et al.

Affiliated with

Also associated with

Rating

Surface passification of a group IVB metal sponge regulus does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Surface passification of a group IVB metal sponge regulus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Surface passification of a group IVB metal sponge regulus will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2111933