2026/03/19
In the production process of double roller pess granulators, insufficient extrusion pressure is a key issue affecting pellet quality and production line efficiency, directly leading to adverse consequences in molding, quality, output, and cost. When pressure is insufficient, the material cannot be fully compacted in the roller die cavity, resulting in a loose internal structure of the pellets, making it difficult to form complete and dense pellets. This significantly reduces the pelleting rate, and a large amount of powder and fine material cannot be formed, significantly reducing production efficiency.
Insufficient pressure also results in low pellet strength, with finished pellets being soft and brittle. These pellets are prone to pulverization during subsequent screening, rounding, conveying, and packaging, generating a large amount of rework. Increased rework increases equipment load and cyclic workload, raising energy consumption, labor, and material losses, thus increasing the overall operating cost of the production line. Simultaneously, the appearance quality of the pellets deteriorates, with rough surfaces, damaged edges and corners, and uneven sizes, failing to meet the appearance standards of commercial organic fertilizers and compound fertilizers, affecting product quality and market competitiveness.
Furthermore, unstable or low pressure causes uneven material distribution on the roller surface, exacerbating abnormal wear of the rollers and shortening the die life. Operating under insufficient pressure for extended periods can lead to abnormal stress on bearings, hydraulic systems, and transmission components, exacerbating equipment wear and increasing the probability of failure.
In short, insufficient extrusion pressure not only affects pellet formation rate, strength, and appearance, but also reduces output, increases costs, and accelerates equipment wear. During production, it is essential to regularly check the hydraulic system, roller gap, feed rate, and die condition, and to stably control the extrusion pressure to ensure granulation effect and stable operation of the fertilizer roller press granulator produciotn line.
