Process for reducing metal halides by reaction with calcium carb

Details Process for reducing metal halides by reaction with calcium carb Process for reducing metal halides by reaction with calcium carb

1974-01-02

1978-08-08

Andrews, M. J.

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

75 28, 75 67R, 75 72, 75 845, C22B 2700

Patent

active

041054407

ABSTRACT:
A metal halide is reduced by reacting it with calcium carbide in a bath in which the calcium carbide is dissolved in a mixture of a halide of at least one alkali metal, specifically sodium, potassium, rubidium and/or cesium, with a halide of at least one alkaline-earth metal, specifically calcium, strontium and/or barium. The desired metal may be one of the aforementioned alkali or alkaline-earth metals, e.g. sodium or magnesium, in which case its halide is one of the constituents of the mixture. Otherwise, a vapor of a halide of the desired metal (e.g. titanium tetrachloride) is bubbled through the bath in order to react with the calcium carbide.

REFERENCES:
patent: 1319148 (1919-10-01), Freeman
patent: 1388086 (1921-08-01), Ashcroft
patent: 2814561 (1957-11-01), Erasmus
patent: 3152885 (1964-10-01), Raney
Bureau of Mines RI 4059 Mar. 1947 pp. 1-8.

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