In the production process of organic fertilizers, the organic fertilizer granulator plays a crucial role as it is the core equipment for processing pre treated organic materials into granular fertilizers.
Firstly, raw material preparation is the foundation. Organic materials that have undergone fermentation, crushing, and other preliminary processes need to have appropriate humidity and particle size. Generally speaking, the humidity of the material should be kept within a certain range. If it is too dry, it is not conducive to particle formation, while if it is too wet, it can cause particle adhesion. Appropriate particle size can facilitate better agglomeration of materials during the granulation process.
Disc granulator is a common organic fertilizer granulation equipment. After the machine is started, the disc begins to rotate at a constant speed. The material is transported onto a rotating disk, and under the action of centrifugal force and friction, the material moves upward along the inner wall of the disk. After reaching a certain height, it falls back to the bottom due to gravity. During this cycle, the spraying system will spray an appropriate amount of water or adhesive onto the material. As the disk continues to rotate, the material rolls and aggregates, gradually forming particles. By adjusting parameters such as the rotation speed, inclination angle, and spraying amount of the disc, the size and shape of the particles can be controlled.
The working principle of the rotary drum granulator is different. The material is fed into a rotating drum, which is equipped with a reading board inside. The copying board continuously lifts the material, causing it to form a parabolic motion trajectory inside the drum. During this process, adhesive or water will also be sprayed. The materials roll and collide repeatedly in the drum, bond with each other, and eventually form particles. The rotary drum granulator has high production efficiency and is suitable for large-scale production.
The roller extrusion granulator uses mechanical pressure to extrude materials into granules. The material is fed into the feed inlet of the granulator, and is extruded through the small holes on the mold by the screw or plunger, forming columnar particles. Subsequently, these columnar particles were cut off into uniformly sized fertilizer particles. The extrusion granulator does not require the addition of excessive binders, which can effectively retain the nutrients of fertilizers.
The organic fertilizer granulator processes organic materials into granular fertilizers through different working methods. These granular fertilizers are not only easy to store and transport, but also can slowly release nutrients in the soil, improve fertilizer utilization, and provide strong support for agricultural production.