2026/06/23
Organic powder—having undergone crushing, moisture adjustment, and thorough mixing—is fed at a steady rate into the granulating cylinder of the new type organic fertilizer granulator. The machine performs the entire granulation process through the high-speed rotation of wear-resistant mixing teeth densely arranged on the main shaft; the process comprises three stages: breaking up, kneading/rolling, and agglomeration.
Upon entering the cylinder, the high-speed rotating alloy mixing teeth subject the raw materials—which may contain clumps or short fibers—to powerful impact and shearing forces. This action breaks up large agglomerates, cuts through coarse fibers (such as straw or mushroom residue), eliminates internal clumping, and ensures uniform particle size, thereby laying the foundation for granulation. Stationary scrapers mounted on the cylinder wall continuously remove adhering wet organic fertilizer, preventing material buildup that could increase the load on the main unit or cause the machine to jam or stall.
Under the continuous agitation of the mixing teeth, the finely crushed, moist powder tumbles and collides; the inherent moisture in the material acts as a binder, causing fine particles to adhere and clump together into tiny "seed" granules. As the mixing teeth continue to beat, squeeze, and knead these seed granules, they attract surrounding fine powder and gradually grow in size, eventually forming uniform, spherical organic fertilizer granules. A variable-frequency motor allows for the adjustment of the main shaft speed; when raw materials have high fiber content or moisture levels, the speed can be reduced to extend the kneading time and improve granule density.
A discharge screen is installed at the end of the cylinder; granules that meet size specifications pass through the screen for the subsequent drying stage, while unformed large clumps and long fibers are retained within the cylinder for further agitation and kneading until they are properly formed and discharged, significantly reducing the volume of material requiring reprocessing.
The machine relies on a gear reducer to transmit torque throughout its operation, and oil seals at both ends of the main shaft prevent dust and slurry from penetrating the bearing housings, ensuring continuous, reliable operation. The entire granulation process eliminates the need for large amounts of binders, relying instead on the material's inherent organic content and optimal moisture levels for shaping. It is suitable for high-moisture organic feedstocks such as livestock manure, crop straw, sewage sludge, and spent mushroom substrate. The resulting granules are spherical and possess moderate strength, resisting breakage after drying, making this the mainstream equipment for bio-organic fertilizer granualtion.
