Dry granulation machine

Dry granulation machine is a relatively new process for producing compound fertilizers through dry granulation. Squeezing granulation is applied in the field of fertilizers, and the granules (1-4mm) required for mixing fertilizers (BB fertilizers) are mostly produced by extrusion method. In recent years, extrusion granulation has developed rapidly in China for the production of compound fertilizers. The forms of $r $n extrusion granulation can be divided into two types: roller type and wheel rolling type. Roller type extrusion is first pressed into large blocks, and then crushed into particles. This device has high capacity, high particle strength, and low energy consumption. Roller type extrusion is widely used abroad. Wheel rolling is made directly on the surface of the roller

　　Dry granulation machineworking principle

The process principle of roller extrusion granulation is that dry materials aggregate into dense and hard large blocks (cakes) under pressure, which is called the extrusion process; The process of crushing and sieving the cake into granules is called granulation. The function of compression is to squeeze out the air between particles, and to make the particle spacing close enough to generate attractive forces such as van der Waals forces, adsorption forces, crystal bridges, and embedded connections. The strength of extruded granules is mainly formed by the intermolecular forces between molecules.

Characteristics of dry granulation machine

Dry granulation machine is a powder granulation equipment based on mechanical extrusion granulation process, which can pelletize without adding adhesives. It is suitable for scenarios such as unstable drug granulation under wet and hot conditions.

1. In terms of equipment purchase, the powder is directly granulated without the need for drying equipment, and the process equipment is simple.
2. In terms of working principle and structure, the equipment consists of feeding, tablet pressing, granulation, crushing and other parts.

3. Compared with other granulators, the applicability varies in different scenarios, and the related processes are slightly different.