Material pretreatment: Firstly, organic materials need to be crushed and pre mixed to ensure uniformity and appropriate particle size. At the same time, adjust the humidity of the material as needed to achieve the required humidity level for granulation, usually between 30% -40%, to improve the plasticity and adhesion of the material.
Feeding and mixing: The pre treated material is evenly fed into the mixing and granulation drum of the toothed granulator through the feeding device. The cylinder is equipped with specially designed stirring teeth, and the rotation of the stirring teeth can fully stir and mix the materials, promoting the uniform distribution of materials and the initial formation of particles.
Plastic deformation and granulation: In the mixing and granulation drum, the rotation of the stirring teeth and the interaction between the materials cause plastic deformation of the materials under specific humidity and pressure conditions. Through extrusion and bonding, the materials gradually form particles. This process is usually accompanied by an increase in the temperature of the material, which helps to improve the stability of the particles.
Cooling and drying: After granulation, organic fertilizer particles usually need to be rapidly cooled through a cooling system to stabilize the particle structure and prevent deformation or adhesion due to high temperature. After cooling, the particles need to be dried to remove excess moisture, improve their hardness and stability, and facilitate storage and transportation.
Screening and post-processing: Finally, the cooled and dried particles are passed through a screening device to remove unqualified particles (such as oversized or undersized particles). Qualified particles after screening can be packaged or further processed as needed, such as adding nutrients, microorganisms, etc.