Material preparation: Before entering the roller, the material usually needs to undergo pre-treatment, such as crushing, mixing, and appropriate humidification, to improve its plasticity and flowability for subsequent extrusion granulation.

Material feeding: The pre treated material is evenly fed between two rotating pressure rollers through a feeding device. The design of the feeding device ensures the continuous and uniform distribution of materials to maintain the stability of the granulation process.

High pressure squeezing: When the material enters the narrow gap between two rotating pressure rollers, it is subjected to high-pressure squeezing. The rotation direction of the roller is usually opposite, which helps the material to be compacted and pushed forward under pressure.

Material deformation and forming: Under high pressure, the gaps between particles of the material decrease, and the material is compacted to form a sheet-like or strip-shaped structure with a certain thickness. This process relies on the plastic deformation of the material, allowing it to maintain a certain shape under high pressure without immediately collapsing.

Fragmentation and particle formation of sheet-like materials: The extruded sheet-like or strip-shaped materials are then sent to a crushing device, such as a crushing drum or cutting blade, to crush the sheet-like materials into small pieces. These small pieces are naturally or further broken into particles of the desired size through mechanical force during subsequent screening and cooling processes.

Particle cooling and screening: The formed particles may need to be cooled to stabilize their structure, and then unqualified particles are removed through screening to ensure uniform particle size in the final product.