The following is a classification of granulation technology for compound fertilizer production lines:

Squeezing granulation: The material is forcibly extruded into particles through extrusion equipment, with high particle strength and regular shape.

Drum granulation: By utilizing the rotation of the drum, the material continuously rolls and aggregates into particles within the drum, resulting in a high granulation rate and uniform particle size.

Disc granulation: The material gradually forms particles on a rotating disc under the action of gravity, centrifugal force, and friction force, and the particles are spherical in shape with relatively consistent particle size.