GFZL Series Dry Roller Granulator

GZFL Series Dry Roller Pelletising Machine Product Overview:
  Extrusion granulation is a relatively new dry granulation process for the production of compound fertiliser. Extrusion granulation in the field of fertilisers was applied to the granulation of potassium chloride at the beginning, and the granular (1-4mm) potassium chloride required for blended fertiliser (BB fertiliser) was basically produced by extrusion method. In recent years, extrusion granulation for the production of compound fertilisers has been developed rapidly in China.
  The form of extrusion granulation can have two kinds of roller type and wheel rolling type, roller type extrusion is first pressed into a large block, and then crushed into particles, so that the capacity of the device is large, high strength of the particles, low energy consumption, roller extrusion is widely used in foreign countries. Rolling type is made directly on the surface of the roll with a cavity groove shape, once extruded into moulded particles. The strength of the product is low, sometimes need to add binder. Suitable for organic fertiliser and compound fertiliser and other granular fertiliser.



GZFL series dry roll extrusion granulator working principle:
  Roller extrusion granulation process principle is: dry material under pressure agglomeration into dense and hard chunks (cake), known as the extrusion process; cake and then crushed and screened to become granular material known as the granulation process. The role of extrusion is to squeeze out the air between the particles, the other is to make the particle spacing to reach close enough to produce such as van der Waals force, adsorption, crystal bridges and embedded connections and other attractive forces. The strength of extruded pellets is mainly due to the forces between molecules that form the pellets.