Process for the preparation of titanium by electrolysis
AssigneePechiney Ugine Kuhlmann
InventorMarcel Armand
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Abstract
The process which is the subject of this invention concerns the preparation of titanium by electrolysis from a bath of molten halides. It comprises effecting partial reduction of the TiCl.sub.4 which is used as the starting material in a separate reaction vessel, and then directly feeding the electrolyzing apparatus by means of titanium halides with a valency of less than 3. The partial reduction of the TiCl.sub.4 is effected by means of divided titanium or another metal such as Na.
Claims1
In a continuous electrolytic process for the production of titanium utilizing an electrolysis cell, wherein said electrolysis cell contains titanium in halide form dissolved in an electrolyte containing at least one alkali metal halide or alkaline earth halide, and said electrolysis cell includes a device for introducing into the cathodic region of the cell titanium in halide form having a mean valency of less than 3, the improvement comprising the preparation of this titanium halide by partial reduction of TiCl.sub.4 utilizing an alkali metal, alkaline earth metal or alloy thereof and introducing said titanium halide at least intermittently into the cathodic region of said electrolysis cell while removing at least intermittently from the anodic region of the cell which is separated from the cathodic region of the cell by a diaphragm an equivalent amount of molten electrolyte.
Dependencies are inferred from the claim text.