The Double Roller Extrusion Granulator is a fertilizer granulator used in the agricultural industry. It is designed to convert powdery raw materials into particles of uniform size and is mainly used in the production of compound fertilizers.
The key components of a Double Roller Extrusion Granulator include two counter-rotating rollers, a crushing chamber, a granulation zone and a hydraulic system. The process usually goes like this:
Raw material preparation: Mix powdery raw materials such as ammonium sulfate, ammonium phosphate, urea or other compound fertilizers and finely crush them to ensure consistent particle size.
Granulation: The powdery material then enters the granulation area, where two rollers further squeeze and compact the material. As the material passes through the gap between the rollers, the pressure causes it to form cylindrical or pillow-shaped particles.
Size control: determine the size of the particles by adjusting the gap between the rollers. This allows the production of granules of different diameters according to specific requirements.
Double Roller Extrusion Granulators offer several advantages in fertilizer production. It has a simple structure, is easy to operate and maintain, and has high production efficiency. The resulting particles have uniform size, good strength, and are easy to handle, store and apply to crops.
The double-roller extrusion granulator has wide adaptability to raw materials and is suitable for granulating raw materials such as fertilizers, medicines, chemicals, and feeds, with a high granulation rate.
The double-roller fertilizer granulator is a representative of the extrusion granulator. The dry material is compressed into a hard and dense block under a certain pressure, which is the extrusion process. The bulk materials undergo crushing, screening, and granulation, which is the granulation process. The function of extrusion is to squeeze out the air between particles so that the distance between particles is close enough to generate interaction force. The particle hardness of roller compaction granules is mainly due to the attraction between molecules. Our twin-roller press is a positive displacement continuous extrusion granulator.
It is worth noting that the double-roller extrusion granulator is only one type of fertilizer granulator on the market. There are other granulation methods and machines, such as drum granulators and disc granulators, each with their own unique features and benefits. The choice of granulation method depends on factors such as raw material type, desired granule characteristics, production capabilities and budgetary considerations. Feel free to contact us for details.
