Dehydration device for preparing anhydrous rare earth halide

The invention provides a dehydration device for preparing an anhydrous rare earth halide. The dehydration device comprises a rotary furnace, and a furnace tube is arranged in the rotary furnace; a plurality of turning plates are arranged in the furnace tube, and a microwave generator and a resistance wire are arranged in the rotary furnace; both the microwave generator and the resistance wire are located on the outer side of the furnace tube; and a rotary transmission mechanism is arranged on one side of the rotary furnace, and connected with the furnace tube. According to the dehydration device for preparing the anhydrous rare earth halide, a hydrated rare earth halide is subjected to dehydration treatment through microwaves generated by the microwave generator; then, the microwave generator is turned off, and the lower resistance wire is turned on for high-temperature treatment; dehydrating agents are separated; the removed water and the dehydrating agents are condensed in a condenser after passing through