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How To Prevent Fertilizer Agglomeration

2018/9/21 10:58:12

First, what is the cause of fertilizer agglomeration?

1.The raw materials of the fertilizer are easily dissolved.

In general, the main raw materials for compound fertilizer production are urea, ammonium chloride, ammonium nitrate, ammonium sulfate, diammonium phosphate, monoammonium phosphate, superphosphate, potassium chloride and potassium sulfate. The compound fertilizer made of these easily soluble fertilizers tends to agglomerate during storage and transportation.


2, Other factors.

¢Ùfertilizer has a high moisture content.

The moisture content of the fertilizer is the biggest factor in the agglomeration of the fertilizer during storage. The higher the moisture content, the more easily the salt in the fertilizer granules dissolves, the more likely the physicochemical reaction occurs, and the agglomeration is easily formed after recrystallization, and the dissolution is repeated. - The crystallization process leads to severe agglomeration. Because this requires a certain degree of drying and cooling during the production process to reduce the moisture of the fertilizer granules themselves.


¢ÚThe product has uneven particle size and low particle compressive strength.

The fertilizer particles are small or the particle size is not uniform, the gap between the particles is small, the specific surface area is large, and the contact area between the particles is large, which is the reason for easy agglomeration. If the compressive strength of the fertilizer granules is low, the fertilizer is easily deformed and broken during packaging, transportation and storage, which will increase the contact area between the granules and easily lead to agglomeration of the fertilizer.


¢ÛThe pressure between the fertilizers during stacking.

When the fertilizer is stored, the particles are in close contact with each other under the action of gravity, and the deformation is easy to occur. The stacking height is about high, the pressure on the fertilizer is increased, the indirect contact of the particles is increased, and the more easily agglomerated.

¢ÜLong storage time.

The longer the storage time of the fertilizer product, the recrystallization of the surface of the fertilizer granules. The more the dissolution process is carried out, and the agglomeration tendency is obvious when the pressure is under a certain pressure for a long time.


¢ÝThe packaging temperature is high.

The packaging temperature is high, the product is not cooled enough, the internal moisture of the product is not fully released, and when the temperature is high, the solubility of the corresponding salt is large. During the storage process, as the temperature decreases, the solubility of the salt decreases, and when the temperature is too saturated, Crystallization occurs, resulting in a crystal bridge, causing agglomeration.

¢ÞThere is a large amount of fertilizer powder when packaging.

During the process of cooling and packaging the fertilizer particles, friction between the particles will generate a certain amount of dust, and the dust exists between the particles, which acts as a ¡°bridge¡±, which increases the contact area between the fertilizer particles and also causes the knot.


Second, how to effectively prevent fertilizer agglomeration?

¢ÙReduce the temperature and humidity of the warehouse, store the fertilizer in a cool and dry warehouse, ensure that the top does not leak rain, the ground does not accumulate water, the warehouse is equipped with a fan, and if necessary, cool down and drain.

¢ÚAfter the fertilizer has been stored for a period of time, it is often turned over,especially for fertilizers with high nutrient content. They are easier to agglomerate when they are stacked for a long time.

¢ÛFertilizers that are prone to chemical reactions are stacked separately to prevent chemical reaction from agglomerating.

¢ÜReduce the height of the fertilizer pallet and reduce the pressure between the particles.


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