Treatment method of titanium tetrachloride dust collection slag

The invention discloses a titanium tetrachloride dust collection slag treatment method which comprises the following steps: S1, spraying titanium tetrachloride dust collection slag to obtain water-containing dust collection slag; s2, roasting the water-containing dust collection slag at 500-900 DEG C for 0.5-5 hours to obtain a roasted solid phase and roasting tail gas; s3, the roasted solid phase and Panzhihua titanium concentrate are matched according to the mass ratio of 1: (2-4), then titanium slag is smelted through an electric furnace, and a smelted product is obtained; and S4, using the smelted product as acid-soluble titanium slag of a sulfuric acid method titanium dioxide production process. The method has the advantages that (1) the slag discharge field environment of the chlorination furnace is obviously improved; (2) resource utilization of the titanium tetrachloride dust collection slag is completely realized; (3) the treatment cost of the titanium tetrachloride dust collecting slag is obviously