Method for preparing titanium carbide

The invention belongs to the field of preparation of inorganic non-metallic materials, and concretely relates to a method for preparing titanium carbide. The to-be solved technical problem is to provide the method for preparing titanium carbide. The method comprises the following steps: a, preparing low-valence titanium, concretely, reacting sponge titanium with titanium tetrachloride in molten salts of sodium chloride and potassium chloride, so as to prepare a low-valence titanium electrolyte; and b, preparing titanium carbide, concretely, taking sponge titanium as an anode and graphite as a cathode, performing electrolysis in the low-valence titanium electrolyte obtained in the step a, and precipitating titanium on the cathode, so as to obtain titanium carbide on the cathode after the metal titanium is reacted with graphite. The method is capable of preparing titanium carbide, and possesses the advantages of low cost, short time, high product purity and the like.