METHOD OF PRODUCING TITANIUM METAL BY REDUCING TITANIUM DIOXIDE BY ELECTROLYSIS OF MOLTEN SALT Russian patent published in 2024 - IPC C25C3/28 C25C7/00 

FIELD: chemical or physical processes.

SUBSTANCE: invention relates to production of titanium metal by reduction of titanium dioxide by electrolysis of molten salt. Method is implemented using an electrolytic cell comprising an anode chamber with an anode filled with an anode electrolyte in the form of a molten salt, and a cathode chamber with a cathode filled with a cathode electrolyte in the form of a molten salt, and a liquid alloy is placed at the bottom of the electrolytic cell, wherein the anode electrolyte and the cathode electrolyte are connected to each other through the liquid alloy. Titanium dioxide is added to the anode chamber, which is reduced to titanium atoms at the interface between the anode electrolyte and the liquid alloy and dissolved in the liquid alloy, and titanium metal is obtained on the surface of the cathode. Area of cathode is 10–20 times larger than the area of the anode. Density of anode current ranges from 0.05 to 2.0 A/cm². During electrolysis, reverse current is increased, amounting to 1 to 5% of total electrolysis time. Temperature ranges from 900 to 1,000 °C.

EFFECT: obtaining titanium metal of high purity.

3 cl, 1 dwg, 9 ex