The organic fertilizer disc granulator machines relies on the combined effects of gravity, centrifugal force, and friction to naturally agglomerate powdery organic materials into spheres. It is a wet agglomeration granulation device.

The disc surface of the equipment is tilted and fixed. During operation, the material moves in a circular motion with the disc surface. The material slides down under its own weight, while simultaneously being pressed against the disc wall by the centrifugal force generated by the disc's rotation. These two forces work continuously, causing the material to tumble, roll, and rub against each other. Fine powder initially binds with a small amount of moisture and organic matter as binding points, forming tiny mother spheres. These mother spheres continuously absorb surrounding powder during tumbling, gradually growing larger and eventually forming uniformly sized granules.

The machine's internal fixed scraper is in close contact with the disc surface and edge. On one hand, it scrapes away wet material adhering to the disc surface, preventing material accumulation and caking; on the other hand, it breaks up excessively large clumps, guides the material layer, ensures material circulation and tumbling, and avoids uneven forming. Some models are equipped with a misting spray system, allowing for the addition of water or liquid binder as needed to increase material viscosity and improve pelleting rate.

The disc tilt angle and rotation speed are flexibly adjustable to control material residence time, thereby altering particle size. A larger tilt angle and faster rotation speed result in shorter material residence time and smaller particles; conversely, smaller particles are produced at lower angles.

This fertilizer produciton machine uses physical forming throughout the entire process, preserving the nutrient structure of the material and making it suitable for well-rotted organic fertilizer raw materials. By controlling the moisture content and fineness of the raw materials during production, and coordinating with proper scraper operation, stable granulation results can be achieved, producing round and compact organic fertilizer granules.