The function of the granulator is to add a certain proportion of additives to the powder produced by the polymerization device, mechanically shear, knead, and mix the material through the mixer to turn the powder into a molten fluid, pressurize the material, and extrude it to the template After passing through a filter, the granulator performs underwater granulation to produce granular synthetic resin raw materials.

 

Due to various reasons and the advantages of double-roller extrusion granulators, double-roller extrusion granulators are becoming more and more popular in our lives and work, but many people have limited understanding of extrusion granulators and do not know many factors Will affect the organic fertilizer granulation results. What are the principles and moisture requirements of a twin-roller extrusion granulator?

 

The twin-roller extrusion granulator is generally a twin-roller extrusion granulator and a flat (ring) die extrusion granulator. During organic fertilizer processing, these granulators can add nitrogen fertilizer as needed. Some granulators use urea as a nitrogen source, which can easily absorb moisture in the air and bind organic fertilizer particles together. Therefore, people often say that the extrusion granulator is a dry powder granulator. It has good processing effect on raw material particles with low moisture content and needs to be improved. Necessary anti-caking treatment should be carried out for wet materials.

 

The granulation principle and moisture requirements of the organic fertilizer extrusion granulator: the working principle of the extrusion granulator is mainly dry powder. When friable materials are squeezed, some particles are crushed and fine powder fills the gaps between the particles. In this case, if the newly formed free chemical bonds on the surface are not quickly saturated with atoms or molecules in the surrounding atmosphere, the newly formed surfaces will come into contact with each other. It will form a powerful realignment. For roller extrusion, the roller skin has spherical grooves and is extruded into a spherical shape. The particles extruded by the flat (ring) die are cylindrical. Extrusion granulation requires low moisture content. If the moisture content is too high, a drying system should be added during processing.

 

The main method to avoid agglomeration when extrusion granulator is granulating is to use drying system, material pretreatment, adding elements and other means to achieve the processing and non-destructive preservation of organic fertilizer particles.