The core components of the roller extrusion granulator include two parallel-arranged rollers, transmission system, mould, cutting device and frame. When working, the two rollers rotate in opposite directions driven by the motor, and the material enters the gap between the rollers from the inlet. As the surface of the rollers usually has grooves or mould holes, the material is squeezed into the mould holes under high pressure to form a continuous strip. Subsequently, the strips are cut into granules of the required length by means of a cutting device. The whole process is continuous, highly automated and capable of mass production.
The design of the rollers is critical to the pelletising effect. Common roller surface configurations include flat, grooved and perforated rollers. Flat rollers are primarily used to compact material, grooved rollers are suitable for creating ribbons of pellets, and perforated rollers directly form cylindrical pellets. The size and shape of the holes in the moulds determine the appearance and size of the final pellets, and users can choose different sizes of moulds according to their needs. In addition, the rollers are usually made of high hardness alloy steel or wear-resistant materials to ensure the durability of the equipment under long-term high-pressure working environment.
Audited Supplier 
){kind=link}