During the operation of fertilizer production line, the uniformity of particles directly affects the quality and market competitiveness of fertilizers. However, when using fertilizer granulators, many companies will encounter the problem of uneven particle size, especially in the NPK fertilizer production line, and uneven particles may affect the fertilization effect. Here are five common causes of uneven fertilizer particles.
- The material humidity is unstable
The humidity of the material is crucial to the granulation process. If the material is too wet, it is easy to lead to agglomeration or adhesion of particles, affecting the molding effect; If the material is too dry, it is difficult to granulate, and the particles are fragile and of different sizes. Therefore, before entering the fertilizer granulator, appropriate moisture control should be carried out on the material to maintain the appropriate humidity range.
- Improper speed setting of granulator
The speed of the granulator directly affects the size and shape of the particles. If the speed is too fast, the particles may become smaller and irregular; If the speed is too slow, the particles may be larger and uneven. Therefore, enterprises need to adjust the speed of the granulator reasonably according to the material characteristics and target particle specifications to ensure uniform particles.
- Feed quantity control is unstable
If the feed volume fluctuates too much, the granulator may be overloaded at some times, and insufficiently fed at other times, resulting in inconsistent particle sizes. Therefore, in the NPK fertilizer production line, a stable conveying system should be used to ensure that the material enters the granulator evenly to improve the stability of granulation.
- Pelletizer mold or roller wear
After long-term operation, the mold, granulation plate or extrusion roll of the fertilizer granulator may be worn, affecting the particle forming effect. This results in particles of irregular shape and uneven size. Therefore, the worn parts should be regularly checked and replaced to maintain the stability of the granulator.
- Low efficiency of particle screening system
After granulation is completed, if the screening system does not effectively separate qualified particles, particles of uneven size may enter the finished product packaging process. Therefore, fertilizer production lines should be equipped with efficient screening machines to ensure the uniformity of finished particles and improve product quality.
Conclusion
Particle uniformity is an important criterion to measure the production quality of NPK fertilizer production line. By optimizing the material humidity, adjusting the speed of the granulator, stabilizing the feed amount, regularly maintaining the equipment and upgrading the screening system, the uniformity of the particles can be effectively improved to ensure the high-quality production of fertilizer products.
