Process for improving the purity of transition metals produced b

Details Process for improving the purity of transition metals produced b Process for improving the purity of transition metals produced b

1986-02-18

1987-06-23

Andrews, R. L.

Chemistry: electrical and wave energy

Processes and products

204 64T, C25C 300

Patent

active

046750843

ABSTRACT:
The present invention relates to a process for improving the purity of transition metals produced by electrolysis of halides thereof in a bath of molten salts in a tank having a metal internal wall.
The process is characterised in that a cathodic potential with respect to the anode of the cell is permanently imposed on the tank.
It finds application in the production of metals such as in particular titanium, zirconium, hafnium, vanadium, niobium and tantalum, with a low proportion of oxygen and foreign metal elements.

REFERENCES:
patent: 476914 (1892-06-01), Bernard
patent: 2937128 (1960-05-01), Raynes et al.
patent: 2975111 (1961-03-01), Reimert et al.
patent: 3082159 (1963-03-01), Reimert

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