The new material is first fed into the pump pool before the hydraulic cyclone, with the discharge material from the tower mill and water from the common tank mixed completely in the pump pool, after the solution concentration reaches the technology requirements, it is fed into the hydraulic cyclone through the slurry pump for particle sorting, the finer material that meets the process size requirements is discharged from the discharge port of the hydraulic cyclone to the next process equipment, and the larger material that does not meet the process size requirements is discharged from the sand settling port of the hydraulic cyclone and fed back to the material loading port of the tower mill. The material from the hydraulic cyclone is fed into the tower mill from the material loading inlet of the tower mill. When the motor rotates through the reducer, driving the spiral stirrer at a constant speed, the grinding medium and the material are subjected to a combination of centrifugal force,…