A method for preparing titanium metal by continuous molten salt electrolysis

Abstract

The invention provides a method for preparing metallic titanium through continuous fused-salt electrolysis. The method is characterized by comprising the following steps of: 1, pelleting titanium dioxide by directly using a pelleting machine to prepare titanium dioxide pellets; 2, adding the prepared titanium dioxide pellets into a melting bath; 3, during electrolysis, connecting the positive electrode of an electrolysis power supply with the anode of an electrolytic bath, and connecting the cathode of the electrolysis power supply with the melding bath, and after the electrolysis, carrying out a discharging process step; and 4, heating a flow guide tube during discharging, opening a ball valve to ensure that liquid titanium flows into a receiving crucible of a cooling chamber through the flow guide tube, closing the ball valve after discharging, cooling the product in the cooling chamber, and taking titanium ingots out of the cooling chamber by opening a door of the cooling chamber. By adopting the method, the electrolysis of titanium dioxide can be continuously carried out, so that the production cost of titanium can be greatly reduced.

Description

technical field [0001] The invention relates to a method for continuous electrolysis of titanium, in particular to a method for continuous molten salt electrolysis to prepare metallic titanium. Background technique [0002] Titanium and titanium alloys have excellent properties such as light specific gravity, high specific strength, good creep resistance at high temperature, and corrosion resistance. They are widely used as structural materials in aerospace, metallurgy, automobile and other industries, and can also be used as functional materials such as hydrogen storage materials, shape memory alloy materials, etc. At present, the production process of sponge titanium is the Kroll method, also known as the magnesium thermal reduction method. This method is to first prepare titanium tetrachloride from titanium-containing minerals, and then reduce titanium tetrachloride with magnesium to obtain sponge titanium. Vacuum consumable electric arc melting is used to make dense tit...

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Problems solved by technology

[0003] In view of the above problems, the applicant, on the basis of further in-depth research on it, proposed a method for continuously preparing metal titanium through high-temperature molten salt electrolysis of titanium dioxide. This method can overcome the above problems, thereby solving the existing process in the prior art A series of problems such as long, many processes, high energy consumption, non-continuous production, and many impurities

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