1. The moisture content of the granular organic fertilizer produced by the organic fertilizer granulator must be below 16.5%, and the temperature must reach more than 75 ° C. However, in fact, it is often difficult to achieve, one is that the moisture content of raw materials entering the granulator is often higher than the safe water, and the other is that when the particle press is tempered, water vapor must be passed into the machine, and the increase of water can not be well controlled, resulting in the flat water of the material;

2, the temperature and humidity of the ambient atmosphere change greatly throughout the year, especially in the southern region, the spring and summer rainy climate is humid, the air humidity is almost saturated, in these conditions dehydration is helpless cooling machine;

3, the working effect of granular organic fertilizer cooling machine is also one of the factors affecting dehydration. Especially the vertical cooling machine, the phenomenon of uneven cooling is serious, and the dehydration capacity is even worse.

The drying and cooling of granular organic fertilizer is a very weak link in the organic fertilizer production line, and many organic fertilizer equipment manufacturers have this problem.

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