Chinuka Limited

Paul Coxon

Derek Fray

A method of refining a metal (e.g. titanium), comprising the following steps: (a) providing () an oxide of the metal having a level of impurities of at least 1.0 wt %; (b) reacting () the oxide of the metal to form an oxycarbide by providing an electrode comprising the oxide of the metal and carbon, and electrolytically reducing the electrode in a molten calcium chloride electrolyte; (c) electrolysing () the oxycarbide in an electrolyte, with the oxycarbide configured as an anode; and (d) recovering () a refined form of the metal from a cathode in the electrolyte.

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Cambridge, United Kingdom

Paul Coxon