Molten salt process for producing titanium or zirconium powder

Details Molten salt process for producing titanium or zirconium powder Molten salt process for producing titanium or zirconium powder

1998-04-23

2000-09-12

Andrews, Melvyn

Specialized metallurgical processes, compositions for use therei

Processes

Producing or treating free metal

75614, C22B 3410

Patent

active

061172081

ABSTRACT:
Titanium metal is produced using titanium dioxide as the starting material. A molten metal collection pool is first prepared in a reaction vessel from zinc and calcium. A molten salt mixture is then added to the vessel comprised of a mixture of calcium chloride and calcium fluoride. The titanium oxide starting material is then added along with additional calcium and the contents are mechanically stirred while maintaining at a temperature of about 800.degree. C. The titanium reacts spontaneously with the calcium, producing titanium powder and calcium oxide. The titanium becomes embedded in the molten zinc pool and settles to the bottom of the vessel, where it is removed and the titanium separated from the zinc by vacuum distillation or a suitable electrochemical process. The same process applies for producing zirconium from zirconium dioxide.

REFERENCES:
patent: 1088909 (1914-03-01), Kuzel et al.
patent: 4680055 (1987-07-01), Sharma

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