As an important equipment for fertilizer processing, the disc granulator's unique process contains many scientific principles. A deep understanding of these processes can help better produce high-quality fertilizers.

Pre treatment of raw materials is the foundation before fertilizer processing. Organic raw materials such as livestock manure and crop straw need to undergo sufficient fermentation to remove harmful substances and convert them into stable humus. Inorganic raw materials need to be accurately proportioned and crushed to ensure uniform distribution of various nutrients. At the same time, by adding water or drying treatment, the humidity of the raw materials is adjusted to the optimal state, providing good conditions for subsequent granulation.

The core component of the disc granulator is the rotating disc, which is the key place for forming fertilizer particles. When the disc begins to rotate, the raw materials are evenly distributed onto the disc. Under the action of centrifugal force, the raw material rapidly diffuses towards the edge of the disc, while being affected by the frictional force between the disc and the material, the material climbs upwards along the inner wall of the disc.

During the material movement, the nozzle sprays adhesive onto it at the appropriate time. The selection and use of binders are crucial, as they not only enable effective bonding of raw material particles, but also ensure that they do not affect the nutrients and quality of fertilizers. Common binders include starch, bentonite, etc. They gradually aggregate small raw material particles together under the action of water.

As the disk continues to rotate, the particles further grow during the continuous rolling process. This is because new raw materials constantly adhere to the surface of the formed particles, and the collision and friction between particles also make them more compact. At this stage, operators need to closely monitor the growth of particles and control their size and shape by adjusting the rotation speed and inclination angle of the disc.

The adjustment of rotational speed directly affects the movement speed and residence time of particles on the disc. When the rotation speed is fast, the residence time of particles on the disc is shorter, and the opportunities for growth are relatively less, so the particles are smaller; On the contrary, a slower rotational speed will give particles more time to aggregate and grow, forming larger particles.

The inclination angle of the disc also has a significant impact on particle formation. The inclination angle is small, the sliding speed of the material on the disc is slow, and the residence time is long, which is conducive to the formation of large particles; When the inclination angle is large, the material slides down quickly and the particles are relatively small.

After a series of processing steps, qualified fertilizer particles are discharged from the edge of the disc to complete granulation. After subsequent drying, screening and other processes, these particles can become high-quality fertilizer products that meet market demand.

Having a deep understanding of the fertilizer processing technology of the disc granulator can help optimize the production process, improve fertilizer quality, and meet the diverse needs of agricultural production for fertilizers.