In compound fertilizer granulation, the disc granulator, with its unique flexible spherical formation logic, is distinctive throughout the entire process, determining both the quality of the finished product and making it a classic choice for large-scale wet granulation.

The most core unique feature is its natural spherical formation mechanism of layer-by-layer coating. Unlike high-pressure forced molding, the disc granulation process relies on the centrifugal force and friction of the rotating disc to allow the powder to roll slowly. With the help of a small amount of water or binder, the powder is gradually adsorbed and coated, forming a uniform shape like a snowball. The internal density of the granules increases layer by layer, without cracks, and the roundness and hardness are far superior to other models.

Secondly, it offers flexible control that is dynamically adjustable throughout the process. Granulation does not require stopping the machine; the disc tilt angle, rotation speed, and water addition can be adjusted in real time to immediately correct the particle size and roundness. Small, unqualified granules can be re-rolled, reducing material return losses and precisely controlling particle size uniformity.

Furthermore, the disc granulation process involves no high-pressure impact or high-temperature loss, resulting in gentle molding throughout. This preserves the activity of nitrogen, phosphorus, and potassium nutrients while also being compatible with functional components such as humic acid and amino acids, without damaging the raw material’s properties.

These unique process advantages allow disc granulators to balance production stability and finished product quality, making them the preferred technology for mass production of high-specification compound fertilizers.