Material pretreatment: Firstly, it is necessary to pretreat organic waste, including crushing, mixing, and adjusting humidity appropriately. The purpose of pretreatment is to achieve the required particle size and humidity for granulation of materials, and to improve their plasticity and adhesion.
Feeding and conveying: The pre treated material is uniformly fed into the main working area of the granulator through a feeding device, which usually includes one or more extrusion components such as flat molds, ring molds, or extrusion drums.
Squeezing granulation: Inside the granulator, the material is subjected to high pressure or rotational force, and is forced to pass through the holes or gaps of the extrusion components. During this process, the plastic deformation of the material and the bonding between particles shape it into particles with a certain shape and size.
Cooling and drying: Organic fertilizer granules that have just been pelletized have a high temperature and require rapid cooling through a cooling system to stabilize the particle structure and prevent deformation. Subsequently, the excess moisture in the particles is further removed through a drying system to improve the hardness and stability of the particles.
Screening and post-processing: The cooled and dried particles need to be screened 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.