Titanium dioxide production line with impurity removal function

The utility model belongs to the technical field of titanium dioxide production, and particularly relates to a titanium dioxide production line with an impurity removal function. The device comprises a dull polish mechanism, a film coating mechanism, a filter pressing mechanism, a flash evaporation mechanism, a steam powder mechanism and a packaging mechanism which are sequentially connected, a first impurity removal mechanism used for removing solid large particle impurities is arranged at a feeding port of the dull polish mechanism, and a second impurity removal mechanism used for removing metal impurities is arranged between every two adjacent mechanisms. And a first impurity removal mechanism is arranged between the second impurity removal mechanism of the film coating mechanism and the filter pressing mechanism and the film coating mechanism. According to the utility model, the first impurity removal mechanism for solid large-particle impurities and the second impurity removal mechanism for removing meta