Adjusting the particle size of an organic fertilizer disc granulator machine involves precisely controlling equipment parameters, material characteristics, and optimizing operating methods. The specific operations are as follows:
1. Adjusting the disc inclination angle: The inclination angle of the bio disk organic fertilizer machine determines the residence time of the material in the disc. A smaller angle results in a longer residence time, more thorough particle collision and agglomeration, and larger particle size; a larger angle results in a shorter residence time and smaller particle size. The conventional adjustment range is 35°-55°, which can be gradually fine-tuned using the inclination adjustment device on the machine.
2. Controlling the disc rotation speed: The rotation speed affects the centrifugal force and tumbling intensity of the material. Too low a speed results in poor material mixing and agglomeration, producing small and loose particles; too high a speed results in excessive centrifugal force, causing the material to be easily thrown out, making it difficult for the particles to grow. The general rotation speed is controlled at 10-25 r/min, and should be matched to the target particle size.
3. Adjusting the material moisture content: Moisture content is a key factor in granulation. Too high a moisture content can cause the material to stick to the disc and clump together, resulting in larger and easily deformed particles; too low a moisture content makes it difficult for the material to agglomerate, resulting in small and loose particles. The suitable moisture content for organic fertilizer granulation is 20%-30%, which can be adjusted in real time through the spraying system.
4. Controlling the feed rate and return ratio: Too high a feed rate leads to material accumulation in the disc and uneven particle size; too low a feed rate results in fewer particle collisions and smaller particle size. At the same time, adding recycled material (unq