Apparatus for continuous decomposition of rare earth concentrate

Provided is an apparatus for continuous decomposition of rare earth concentrate. The apparatus comprises: a body, which has a feed port, two liquid feeding ports, and two tail gas outlets at the top and two discharge ports at the bottom, a heat preservation chamber being provided in a side wall of the body, and the heat preservation chamber being provided with a heat preservation liquid inlet and a heat preservation liquid outlet; a bidirectional propeller, which is provided in the body, extends along the length direction of the body, and comprises a rotating shaft, a first spiral blade, and a second spiral blade, the first spiral blade being disposed on a first shaft section of the rotating shaft and the second spiral blade being disposed on a second shaft section of the rotating shaft, and the spiral direction of the first spiral blade being opposite to that of the second spiral blade, such that the first spiral blade discharges materials toward a first end of the rotating shaft and the second spiral blade discharges materials toward a second end of the rotating shaft; and a driving assembly, which is connected to the rotating shaft.