Method for producing titanium products

Abstract

Method for producing titanium products, comprising the preparation of a titanium-containing charge for chlorination, said charge containing titanium slag, a carbon-containing reducing agent, and sodium chloride; chlorination of the charge with gaseous chlorine in a chlorinator in a molten chloride salt medium, while maintaining the molar ratio of impurity-binding metals (Fe, Mg, Al) to the resulting chlorides of iron, magnesium, and aluminum at 2, 1-2,8, and the mass ratio between carbon and titanium dioxide in the molten chloride salts at 0,15-5,0, at a melt temperature of 710 °C to 800 °C, thereby obtaining a vapor-gas mixture which is purified from sublimated by-product chlorides to yield technical-grade titanium tetrachloride and pulp, purification of the technical titanium tetrachloride from impurities in columns, resulting in purified titanium tetrachloride and the separation of impurities in the form of a low-boiling distillate and a column bottoms residue, magnesiothermic reduction of the purified titanium tetrachloride in a reduction reactor using magnesium, to obtain a reaction mass and molten recyclable magnesium chloride, vacuum separation of the reaction mass in a vacuum separation unit, yielding sponge titanium blocks and magnesium condensate, whereby the pulp obtained from the purification of the vapor-gas mixture is returned to the chlorinator in two streams: one stream is supplied to the surface of the melt, and the other is sprayed into the subroof space of the chlorinator, thereby maintaining the temperature of the vapor-gas mixture in the subroof space of the chlorinator between 300 °C and 650 °C, while adjusting the ratio of the total pulp flow rate to the gaseous chlorine flow rate from 2:1 to 4: 1. Technical result: reducing the amount of impurities in technical titanium tetrachloride and improving the quality of the sponge titanium obtained as a result of its subsequent processing.