Product Overview
  Extrusion granulation is a relatively new dry granulation process for the production of compound fertilizers. Extrusion granulation was initially applied to potassium chloride granulation in the field of fertilizer. The granular (1-4mm) potassium chloride needed for mixed fertilizer (BB fertilizer) was basically produced by extrusion method. In recent years, extrusion granulation for the production of compound fertilizers has been developed rapidly in China.
  There are two forms of extrusion granulation: roll-to-roll extrusion and roll-to-roll extrusion. The roll-to-roll extrusion is first pressed into large blocks and then crushed into particles. This device has large capacity, high particle strength, low energy consumption, and roll-to-roll extrusion is widely used abroad. Roller rolling is to directly form a grooved shape on the surface of the roll and extrude the particles at one time. When the strength of the product is low, it is sometimes necessary to add a binder. It is suitable for granular fertilizer such as organic fertilizer and compound fertilizer.
Working principle
  The principle of roll-on-roll extrusion granulation is that dry materials are agglomerated into dense and hard blocks (cake) under pressure, which is called extrusion process, and the cake is crushed and screened to become granular material, which is called granulation process. The effect of extrusion is to extrude the air between particles, and to make the particle spacing close enough to generate attractions such as van der Waals force, adsorption force, Crystal Bridge and embedded connection. The strength of extruded granules is mainly determined by the force between molecules.

Technical specifications

Model	Roller centre distance	power
LG-240	240	7.5-1.5
LG-360	360	22-45
LG-460	460	37-60
LG-580	580	45-90
LG-650	650	55-200
LG-730	730	90-315

 

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  LG Series Dry Granulator
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  LG Series Dry Granulator