Production of highly purity titanium by oxide direct reduction in the molten calcium chloride with the multi-circulated baths

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Titanium dioxides is stable oxide and it can not be reduced to the metal easily. It was taken as the starting material in a new proposal. The oxygen in the oxide is removed directly as the form of CaO and reduced to the highly pure metallic titanium. This method was examined experimentally. The direct reduction of oxide using molten calcium chloride and simultaneous recycling using electrolysis is combined with the conventional two deoxidation methods with serial connection. The stepwise deoxidation assist the consequence of reduction-deoxidation of titanium and recycling of by-product CaO. This work supplies the fundamental concept and experimental evidences to operate as the complete process.