Effects of FeO in Titanium Slag on Molten Salt Chlorination

Chemical and phase compositions of the titanium slag with different FeO contents were analyzed,and the effects of FeO content on the heat release, quantity and compositions of collected slag, molten saltscompositions and product quality in molten salt chlorination process were researched.The results show thatthe main phases of titanium slag are anosovite, rutile and silicate vitreous.With increasing FeO content, theheat release, ratio of the collected slag, contents of FeCl3 and FeCl2 in the molten salts, contents of FeCl3 and solid in the products all increase for the chlorination process.It is feasible for preparation of TiCl4 bymolten salt chlorination using titanium slag with high content of FeO.However, the compositions of moltensalts and collected slag are evidently affected in the chlorination process.Thus, the ratio of materials, saltelimination system and slurry spray system should be adjusted to resolve the problems mentioned above.