Drying link is an important link in the fertilizer manufacturing process, and the drying method is very key. The fertilizer produced by the organic fertilizer equipment is completely dry fertilizer, so how does the organic fertilizer equipment produce dry fertilizer?
(1) Mechanical dewatering method: mechanical dewatering method is to extrude part of the water by pressurizing the material. Common methods include pressing, sedimentation, filtration and centrifugal separation.
Mechanical dehydration can only remove part of the free water in the material, while the combined water remains in the material. Therefore, the water content of the material after mechanical dehydration is still very high, generally 40-60%. But mechanical dehydration is an economical method.
(2) Heating and drying method: also known as drying, it uses heat energy to heat materials and evaporate the water in materials. A certain amount of heat is required to remove moisture from the material.
Generally, air is used to dry materials. The air is preheated and sent to the dryer to transfer heat to the material, so that the water in the material evaporates to form water vapor, which is brought out of the dryer with the air. After the material is heated and dried, the combined water in the material can be removed to achieve the water content required by the product or raw material.
(3) Chemical dehumidification method: use hygroscopic agent to remove a small amount of moisture in gas, liquid and solid materials.
Due to the limited dehumidification capacity of hygroscopic agent, it is only used to remove trace moisture in materials. Therefore, it is rarely used in production.
More details on the dryer machine, go to https://manurefertilizermachine.com/poultry-manure-dryer/
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