Structure and working principle of the disc granulator

The disc granulator is a new type of inclined disc granulation equipment with a granulation rate of over 95%. The granulator of the disc granulator has three discharge ports, which facilitates intermittent production and greatly improves labor efficiency. The production capacity can reach 24t/h. The reducer and the motor are driven by a flexible belt, which makes the start smooth and reduces the impact force. The bottom of the granulation disc is reinforced with a plurality of radiant steel plates, which are durable and non-deformable. The thickened base design eliminates the need for anchor bolts. The main gear of the granulator is quenched by high frequency, and the service life is doubled.

Disc granulator performance characteristics:
The disc granulator has the advantages of uniform granulation, stable operation, high sphericity, large rounded granule strength, intuitive operation and convenient maintenance.

Disc granulator working principle:
The raw meal powder is uniformly wetted by the atomized water in the material mixer to form a spherical core having a very uniform particle size, and then fed into a spherical disk for ball formation. The moisture of the ball should be controlled at 12-14%. Most of the water should be added in the twin-shaft mixer. Only a small amount of supplementary water is added to the ball plate, and the amount of water added is controlled to be about 0 to 3%.

The dry powder is directly added to the ball-forming plate and sprayed with an appropriate amount of water. The raw material core enters the ball-making disk and is subjected to centrifugal force, friction and gravity in the disk, and moves along the parabola. Due to the cohesiveness and plasticity of the material, the cores are bonded to each other and gradually grow up during the movement. When the parameters such as the inclination angle, the height of the disk edge, the rotation speed and the moisture of the ball disc are constant, the balls of different particle sizes roll downward from the edge of the disk at different exit angles due to different gravity. During the continuous rolling process, the ball continuously discharges the water in the ball out of the surface. Due to the cohesiveness of the material and the natural volatilization of the surface liquid film, the ball has certain strength, and then the slanting disk body rotates. The sides of the disc are discharged outside the tray.