Reverse-polarity direct current plasma-driven electro-reduction of refractory metals in molten oxide melts

From: Minerals & Metallurgical Processing | Date: May 1, 2004| Author: | Copyright information

Abstract

This work is concerned with the extraction of refractory metals using an electro-reduction process in which a molten oxide melt, instead of halide, is used as the electrolyte. The process may provide an alternative method for producing refractory metals from their ores through the use of a reverse-polarity direct current (DC) plasma arc heating process. In such a process, the plasma torch itself acts as an anode, and the resulting liquid or solid product metals work as a cathode, whereas the molten oxide melt plays the role of an electron transfer layer. The focus of this study is ...

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