What is the double roller extrusion granulator?

The double roller extrusion granulator is a type of fertilizer granulation machine used in the agricultural industry. It is designed to convert powdered raw materials into uniform-sized granules, primarily for the production of compound fertilizers.

The key components of a double roller extrusion granulator include two counter-rotating rollers, a crushing chamber, a granulating area, and a hydraulic system. Here’s how the process typically works:

Raw Material Preparation: The powdered raw materials, such as ammonium sulfate, ammonium phosphate, urea, or other compound fertilizers, are mixed and finely pulverized to ensure a consistent particle size.

Granulation: The powdered material then enters the granulating area, where the two rollers press and compact the material further. As the material passes through the gap between the rollers, the pressure causes it to form cylindrical or pillow-shaped granules.

Size Control: The size of the granules is determined by adjusting the gap between the rollers. This allows for the production of granules with different diameters, depending on the specific requirements.

The double roller extrusion granulator offers several advantages in fertilizer production. It has a simple structure, is easy to operate and maintain, and provides high production efficiency. The resulting granules are uniform in size, have good strength, and can be easily handled, stored, and applied to crops.

It’s worth noting that the double roller extrusion granulator is just one type of fertilizer granulation machine available in the market. There are other granulation methods and machines, such as rotary drum granulators and disc granulators, each with its own unique features and benefits. The choice of granulation method depends on factors such as the type of raw materials, desired granule characteristics, production capacity, and budget considerations. Welcome to contact us for details.