Continuous production of finely divided zirconium powder

Details Continuous production of finely divided zirconium powder Continuous production of finely divided zirconium powder

1979-11-15

1981-08-25

Hunt, Brooks H.

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

75 845, C22B 3414

Patent

active

042857244

ABSTRACT:
Process for production of finely divided zirconium powder by reaction of solid magnesium with ZrCl.sub.4 in a molten salt bath maintained at a temperature below the melting point of magnesium. A preferred salt bath contains about 8 mole % ZrCl.sub.4 in an equimolar mixture of KCl and NaCl and is maintained at about 625.degree. C. Gaseous ZrCl.sub.4 and solid magnesium are continuously fed to a lower portion of the bath, the bath is continuously agitated, and bath containing MgCl.sub.2 is continuously removed. Zirconium powder recovered from the bath is generally spherical with a median particle size of about 2.2 .mu.m and is suitable for use in rapid rise time thermal batteries.

REFERENCES:
patent: 2214211 (1940-09-01), Von Zeppelin
patent: 2839385 (1958-06-01), Olson
patent: 2861791 (1958-11-01), Chisholm et al.
patent: 2942969 (1960-06-01), Doyle
patent: 3692294 (1972-09-01), Ishimatsu

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