A method for the continuous electrowinning of pure titanium...

Details A method for the continuous electrowinning of pure titanium... A method for the continuous electrowinning of pure titanium...

C - Chemistry, Metallurgy

25

C

C25C 3/26 (2006.01) C25C 3/00 (2006.01) C25C 3/28 (2006.01) C25C 7/00 (2006.01)

Patent

CA 2363647

This invention relates to a method for the continuous electrowinning of pure titanium metal from titanium slag and other electrically semiconductive titanium mixed oxides particularly ilmenite, other natural titanium ores or synthetic titanium oxide compounds. In addition, the method relates to the preparation of semiconductive electrodes made of these titanium oxide compounds. The method involves crushing and grinding a mass of crude titanium slag, separating magnetically the major impurities in the ground slag, melting the mass of purified titanium slag, casting the molten purified titanium slag into rectangular slabs or cylindrical rods forming a dense, solid, and homogeneous conductive material, using the dense solidified shapes of titanium slag as electrodes into a continuous electrolytic process conducted into a molten salt electrolyte at elevated temperatures. Extracting by direct current electrolysis the pure titanium metal from the dense cast titanium slag electrodes.

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