Granular biofertilizers are popular with customers because of their ease of storage and application. Compared with powdered biofertilizers, the production process of granular biological fertilizers is more complicated. It has more processes such as granulation, drying, cooling and coating. Bio fertilizer granulator is an important equipment for making biofertilizer in granule form.
How do different bio fertilizer granulator granulate?
Bio fertilizer granulator can make powdered biofertilizer raw materials into pellets. But, different granulators have unique granulation methods. You choose the bio fertilizer granulator according to the difference of biological fertilizer raw materials.
The disk granulator
The disk pelletizer is wet granulation, which makes biofertilizer particles through the rotation of the disk and the action of gravity.
The roller extrusion granulator
The roller extrusion granulation equipment is dry granulation. Extrusion of two rollers to form uniform size particles.
The drum granulator
In addition, the drum granulator is also the wet granulation of aggregates. It is by means of the rotating movement of the cylinder to produce extrusion pressure between the materials and aggregate into balls.
What is the moisture content of biological fertilizer before and after granulation?
In the case of wet granulation, the water content of biological fertilizer raw materials should be about 30%. If your ingredients are a little dry, you can add a sprayer to a disc or drum granulator. After granulation, the water content of biological fertilizer particles is about 20%. If you want to get bio fertilizer pellets with a 10% water content, a rotary drum dryer is a good choice.
