In organic fertilizer machine, roller press granulator is commonly used for granulation of various NPK fertilizers, such as ammonium sulfate, ammonium chloride, ammonium phosphate, etc., with good particle quality. All kinds of dry powder materials are added from the top of the double roller granulator. Under the large extrusion pressure of the double roller granulator, the materials deform and compress into thin sheets. The flake material is crushed, granulated and screened in the lower crushing chamber to obtain the granular spherical product.
1. Ingredients of raw materials: urea, ammonium nitrate, ammonium chloride, ammonium sulfate, ammonium phosphate, potassium chloride and other raw materials are prepared in a certain proportion.
2. Stirring of raw materials: Stir the prepared raw materials evenly to improve the fertilizer efficiency content of the entire fertilizer particles.
3. Raw material granulation: feed the evenly stirred raw material into the extrusion granulator.
4. Granule drying: The granules made by the roller extrusion granulator are sent to the dryer to dry the moisture contained in the granules, thereby increasing the strength of the granules and facilitating storage.
5. Particle cooling: the temperature of the dried fertilizer particles is high and easy to agglomerate. After cooling, they are easy to pack, store and transport.
6. Particle classification: the cooled particles are classified, the unqualified particles are broken and re granulated, and the qualified products are screened.
7. Finished film: coating qualified products to increase the brightness and roundness of particles.
8. Finished product packaging: colored particles, i.e. finished products, are bagged and stored in a ventilated place.
