During the operation of organic fertilizer production line, the quality and storage stability of the final product are directly affected by the standard of fertilizer humidity. However, many enterprises will encounter the problem of excessive fertilizer humidity in the production process, which will not only lead to easy caking and mold of the finished product, but also may affect the normal operation of the fertilizer granulator. So why is this happening?

1. The moisture content of raw materials is too high

Some organic raw materials, such as livestock manure, biogas residue, straw, etc., have high moisture, and if they enter the production process directly without pretreatment, it is easy to lead to the difficulty of running the granulator or blender in the NPK fertilizer production line, and eventually cause the humidity of the finished fertilizer to exceed the standard.

2. Excessive spray during granulation

In the granulation process of the fertilizer granulator, in order to improve the particle forming rate, it is usually necessary to add a certain proportion of water or adhesive. However, if the amount of spray is not properly controlled, the excess liquid will make the internal water content of the fertilizer particles too high, resulting in increased drying difficulty, and eventually the humidity of the finished product exceeds the standard.

3. Insufficient treatment of drying link

Drying equipment plays a key role in the fertilizer production line. If the drying temperature is too low, the drying time is insufficient, or the operating efficiency of the equipment is reduced, the water in the fertilizer cannot be fully evaporated, which is easy to lead to high humidity of the finished product. In addition, excessive load or improper operation of the dryer may also affect the drying effect.

4. The production environment humidity is high

If the production environment is humid, especially in the rainy season or high humidity areas, the fertilizer may absorb moisture in the air during storage and cooling, resulting in an increase in the humidity of the finished fertilizer. Therefore, in the production process, good ventilation and dehumidification measures should be maintained to reduce the impact of air humidity on the quality of fertilizer.