Rotary Drum Granulator: The All-Round Choice for Large-Scale NPK Compound Fertilizer Production
What is a rotary drum granulator? A rotary drum granulator is a device that uses the rotating motion of an inclined cylinder to agglomerate powdery materials into spherical granules under the action of steam, water, or a binder. It is a core piece of equipment for large-scale NPK compound fertilizer production. Its working principle is as follows: Material enters from one end of the cylinder, is lifted by the inner wall lifting plates during rotation, and then rolls down. Simultaneously, steam or water is sprayed in to moisten the surface of the granules, causing layers of fine powder to coat the core, forming round granules. The cylinder inclination angle (2 to 4 degrees) and rotation speed (12 to 18 rpm) can be adjusted according to the material characteristics.
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