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Several common granulating methods of fertilizer granulator
The double roller granulator belongs to extrusion sliding model, which is often used as NPK fertilizer granulator. Its working principle is that the belt and pulley are driven by the motor, transmitted to the driving shaft through the reducer, and work in the opposite direction with the driven shaft through the split gear. The materials are added from the feeding hopper, extruded by rollers, demoulded into balls, and transported to the crushing screen studio to screen and separate the finished particles (balls), and then the returned materials are mixed with the new materials, and then granulated.
The new type of organic fertilizer granulator machine is widely used in the granulation of organic fertilizer. It has the characteristics of more granulation, stable operation, strong and durable equipment and long service life. The working principle of the new type organic fertilizer granulator machine is to use the high-speed rotating mechanical stirring force and the resulting aerodynamic force to continuously realize the mixing, granulation, spheroidization and densification of fine powder materials in the machine, so as to achieve the purpose of granulation. The shape of the particles is spherical, the sphericity is 0.7, the particle size of the drum granulator is generally between 0.3-3 mm, and the pelletizing rate is high. The size of the particle diameter can be adjusted by the material mixing amount and spindle speed. Generally, the lower the mixing amount, the higher the speed, the smaller the particles, and vice versa.
Flat film granulator is used for granulation of fermented organic matters, breaking through the conventional organic granulation process. Before granulation, it can be processed into spherical particles without drying, crushing and direct batching of raw materials, which can save a lot of energy.
Granulation principle of disc granulator: the powder added from the feeding pipe to the inclined disc is bonded with the liquid droplets sprayed by the material liquid sprayer to form small particle groups. The gravity and centrifugal force produced in the process of rotation of the inclined disc make the small particles roll down to the edge of the disk continuously and adhere to the powder, which makes the particles increase continuously. At the same time, due to the friction force at the bottom of the disc organic fertilizer granulator machine, the particles move up with the disc. When reaching the scraper, the granular powder passes through the gap between the scraper and the disc, and some particles roll along the direction of the scraper to the edge of the disc. In the continuous rolling, the powder adheres to the powder, and increases from small to small after several cycles to reach a place along the edge of the disc within the range of finished particles.
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