| 摘要 |
This invention relates to a method for the continuous electrowinning of pu re titanium metal from titanium slag and other electrically semiconductive titanium mixed oxide compounds particularly ilmenite. The method involves crushing an d grinding a mass of crude titanium slag, separating magnetically the major impurities in the ground slag, melting the purified and conductive titanium slag at elevated temperature, pouring the molten titanium slag at a bottom of an electrolytic cell to form a pool of liquid cathode covered with a layer of molten salt electrolyte. Reducing cathodically by direct current electrolysis at high temperatures the molten titanium slag to produce droplets of pure liquid titanium metal that fall by gravity at the bottom of the electrolytic cell forming after coalescence a pool of liquid titanium metal. The liquid titanium metal is continuously siphoned or tapped under an inert atomosphere and cast into a dense, coherent, and pure ingot.
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