Recovery method and recovery system for titanium tetrachloride tailings

The invention relates to a recovery method and a recovery system for titanium tetrachloride tailings. Titanium tetrachloride tailing slurry passes through a screen of 5-80 meshes to obtain oversize product coarse fraction petroleum coke slurry and undersize product slurry A; magnetic separation is carried out on the slurry A to obtain high-magnetism slurry and low-magnetism slurry; reselecting andseparating are carried out on the low-magnetism material slurry to obtain fine-grained petroleum coke slurry and slurry B; a petroleum coke collecting agent is added into the slurry B and then flotation separation is carried out to obtain medium-size-fraction petroleum coke slurry and slurry C; a titanium collecting agent is added into the slurry C and then flotation separation is carried out toobtain high-titanium slurry rich in rutile or high-titanium slag and secondary tailings; dehydrating and packaging are carried out on the coarse-fraction petroleum coke slurry, the fine-fraction petroleum coke slurry and the m