Sodium silicate precipitation slag recovery device

The sodium silicate precipitation slag recovery device comprises a tank body, a discharging assembly arranged in the tank body and a driving and stirring assembly, the outer side of the tank body is fixedly connected with a heater, the discharging assembly comprises a ventilation pipe which is rotationally installed in the tank body and is coaxial with the tank body, the top end of the ventilation pipe extends out of the tank body, and the top end of the ventilation pipe is provided with a driving and stirring assembly. A plurality of uniformly distributed air holes are formed in the ventilation pipe, the bottom end of the ventilation pipe extends into the discharge port, the bottom of the ventilation pipe is fixedly connected with two stirring blocks, the two stirring blocks are both located in the discharge port, and the top end of the ventilation pipe is connected with the driving stirring assembly. According to the technical scheme, the discharging assembly is arranged, during discharging, the ventilation