From Blending to Granulation: Flexible Production Combination of Disc Granulators and BB Fertilizer Production Lines
In the equipment landscape of fertilizer production, disc granulators and BB fertilizer blending production lines represent two distinct yet complementary production paths—the former transforms powdered materials into spherical granules, while the latter precisely blends pre-formed granules according to a formula. Using them together provides fertilizer manufacturers with a complete and flexible production solution from raw material processing to finished product formulation.
The core working component of a disc granulator (also known as a disc granulator or bio-organic fertilizer disc granulator) is an inclined, circular disc. After the powdered material enters the disc, under the combined action of centrifugal force, friction, and gravity generated by the disc’s rotation, it moves along a parabolic trajectory, adheres to each other, rolls, and grows, gradually forming spherical granules, which are eventually automatically discharged from the edge of the disc. The organic fertilizer disc granulator achieves a granulation rate of over 93%. The granulation disc features an integral arc structure, reinforced with multiple radial steel plates at the bottom, ensuring durability and preventing deformation. The disc is lined with high-strength fiberglass, providing corrosion and wear resistance. The disc inclination angle is typically adjustable between 40 and 50 degrees, and the rotation speed can be set as needed. Operators can flexibly adjust process parameters according to material characteristics.
A unique advantage of the bio-organic fertilizer disc granulator lies in its room-temperature granulation characteristic—the entire pelletizing process is a purely physical operation, requiring no heating. This means that functional microorganisms added during granulation will not be inactivated by high temperatures, and the activity of microorganisms in the finished granules is fully preserved. For bio-organic fertilizer producers, this characteristic makes the disc granulator an ideal alternative to high-temperature drying granulation processes.
In the BB fertilizer (blended fertilizer) production field, NPK blenders and BB fertilizer blending production lines perform completely different tasks. BB fertilizer raw materials are already granulated single-element fertilizers, and the production process is essentially a purely physical mixing process, without any chemical reactions. A complete BB fertilizer blending production line typically consists of an automatic batching unit, a mixing unit, a quantitative packaging unit, and a control system. Its core advantage lies in its formulation flexibility—by adjusting parameters in the control software, the same production line can produce dozens of different formulations within a single day. The NPK blender employs a special internal spiral mechanism and three-dimensional structure, ensuring a gentle mixing process and smooth discharge. It is specifically optimized to address the stratification and segregation issues that occur when particles of different densities and sizes are mixed.
The combination of a disc granulator and a BB fertilizer blending production line provides fertilizer manufacturers with a complete process chain from powder granulation to finished product blending. The disc granulator forms granular base materials from organic raw materials or inorganic powders, while the BB fertilizer production line blends these base materials with various single-element fertilizer granules as needed, producing more targeted, specialized fertilizer formulations. This equipment combination combines the flexibility of granulation with the precision of formulation, effectively meeting the diverse needs of modern agriculture for differentiated fertilizer products.