Control method for large scale batch reduction of zirconium tetr

Details Control method for large scale batch reduction of zirconium tetr Control method for large scale batch reduction of zirconium tetr

1983-10-04

1985-04-16

Sebastian, Leland A.

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

266195, 266905, C22B 2500

Patent

active

045113998

ABSTRACT:
This is a control method for large scale batch reduction of zirconium tetrachloride to zirconium metal. Solid zirconium tetrachloride is fed at least periodically into a sublimer and the sublimer heated to vaporize the zirconium tetrachloride. The vaporized zirconium tetrachloride is fed from the sublimer to a reduction vessel and a measurement is made indicative of this feed (e.g., the flow rate or the pressure in the reduction vessel). A condenser is used to conjunction with said sublimer and the temperature of the condenser is controlled to control the feed of the vaporized zirconium tetrachloride. Preferably, a flow restriction is used between the sublimer and the condenser to provide improved control.

REFERENCES:
patent: 4105192 (1978-08-01), Ishimatsu et al.
patent: 4127409 (1978-11-01), Megy
patent: 4242136 (1980-12-01), Ishizuka

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