Method for preparing titanium metal by molten salt electrolysis

A method for preparing a titanium metal by a molten salt electrolysis, wherein:

• the method is implemented using an electrolytic cell, the electrolytic cell comprises an anode chamber and a cathode chamber, the anode chamber is filled with an anode molten salt electrolyte and inserted with an anode, wherein the anode molten salt electrolyte comprises a titanium-containing raw material, the cathode chamber is filled with a cathode molten salt electrolyte and inserted with a cathode, a bottom of the electrolytic cell is further filled with a liquid alloy, and the anode molten salt electrolyte and the cathode molten salt electrolyte are connected by the liquid alloy and not in contact with each other;
• the method comprises powering on and running the electrolytic cell, reducing the titanium-containing raw material in the anode chamber to titanium atoms at an interface between the anode molten salt electrolyte and the liquid alloy, and simultaneously dissolving the titanium atoms into the liquid alloy;
• at the same time, oxidizing the titanium atoms in the liquid alloy are oxidized to titanium ions at an interface between the liquid alloy and the cathode molten salt electrolyte, and simultaneously allowing the titanium ions to enter the cathode molten salt electrolyte and subsequently reducing the titanium ions entered to titanium atoms on a surface of the cathode se as-to form the titanium metal.