At present, the commonly used machines for producing organic fertilizer granules include: disc granulator, new type of organic fertilizer stirring tooth granulator, new type of three in one drum stirring tooth granulator, organic fertilizer throwing machine, and roller squeezing granulator. It is recommended that organic fertilizer manufacturers choose suitable granulation machine equipment according to their own raw material characteristics, or consult organic fertilizer equipment manufacturers for advice.

The disc granulator, also known as the disc granulator, is based on the principle of granulation: the powder added from the feeding pipe into the inclined disc is bonded with the droplets sprayed by the material sprayer to form small particle groups. The gravity and centrifugal force generated during the rotation of the tilted disk cause the small particle group to continuously roll and adhere to the powder material towards the lower edge of the disk, resulting in the continuous increase of particles. At the same time, under the action of the friction force at the bottom of the disc, the particles move upward with the disc. When they reach the scraper, the granular powder passes through the gap between the scraper and the disc. Some particles roll along the direction of the scraper to the edge of the disc, and continue to roll and adhere to the powder. After multiple cycles, they increase from small to large and reach the range of finished particles along the edge of the disc. The factors that affect the disc granulator include the diameter, inclination angle, edge height, rotational speed of the disc, as well as the position of the material spray and scraper plate. Due to its high granulation rate, high yield, stable operation, and sturdy and durable equipment, it is often chosen by a large number of users as a supporting equipment for organic fertilizer production lines.

The new type of organic fertilizer agitator is widely used for granulation of organic fertilizers, with the characteristics of more granulation, smooth operation, sturdy and durable equipment, and long service life. The working principle of the new organic fertilizer agitator is to use the high-speed rotating mechanical stirring force and the resulting aerodynamic force to continuously mix, granulate, spheroidize, and compact fine powder materials inside the machine, thereby achieving the purpose of granulation. The particle shape is spherical with a sphericity of 0.7, and the particle size is generally between 0.3-3 millimeters, with a high sphericity rate. The size of the particle diameter can be adjusted by the amount of material mixed and the spindle speed. Generally, the lower the mixing amount and the higher the speed, the smaller the particle size, and vice versa. Application scope: The new type of organic fertilizer agitator is suitable for granulation of lightweight fine powder materials. The finer the basic particles of fine powder materials, the higher the sphericity of the particles, and the better the ball quality. Generally, it is required that the particle size of the material granulation should be less than 300 mesh. Typical application materials include chicken manure, pig manure, cow manure, clay, kaolin, etc.

The new organic fertilizer three in one granulator is widely used in the granulation production of organic fertilizers and compound fertilizers. The machine has uniform granulation particle size and a yield rate of over 97%, making it a very suitable granulation equipment for organic-inorganic compound fertilizers, organic fertilizers, and bio organic fertilizers. Due to the special nature of the coarse fibers in the material, the ball forming rate of the rotary drum granulator is low, and the stirring gear granulator cannot produce nitrogen content exceeding. 8% of the material (easy to stick to the wall), this granulator overcomes the disadvantages of both. A low-energy and high-quality granulation equipment that can produce both organic fertilizers and organic-inorganic compound fertilizers. Large output and good granular products. Suitable for large and medium-sized organic fertilizer production enterprises, with good sealing and no dust pollution. Adapting to modern environmental requirements, multiple organic fertilizer factories with a capacity of over 50000 tons use mature processes.

The organic fertilizer rounding machine is suitable for rounding the particles of organic fertilizers, organic compound fertilizers, and compound fertilizers mainly made from livestock manure such as chicken manure. The organic fertilizer rounding machine is used for the beauty of granular fertilizers. The granular fertilizers produced by the extrusion granulator or disc granulator process can make the fertilizer particles uniform in size, precise in roundness, bright and smooth in surface, strong in particle strength, high in balling rate, and low in balling return rate. Therefore, it can reduce energy consumption and increase yield.

The roller extrusion granulator is energy-saving and consumption reducing. Extrusion granulation is the process of granulating materials at room temperature, and compared with other methods, it does not require drying measures such as fuel and gas. The commonly used method for producing compound fertilizers in China without the need for additional adhesive is steam granulation. After condensation and crystallization between material molecules, water vapor acts as a binder during the manufacturing process. But during the drying process, it is necessary to remove the water inside and on the surface of the particles, otherwise the fertilizer is prone to sticking and clumping during storage. Dry granulation does not require additional additives and only utilizes the intermolecular forces of the material itself, simplifying the process and reducing energy consumption. The lower investment is due to the elimination of the drying process and the low return ratio (about 15% of the total feed amount of the extruder), simple process flow, and lower investment. The raw material composition for flexible extrusion granulation production has a wide range of raw material routes. Currently, more than 20 types of materials have been successfully used for extrusion granulation, including ammonium nitrate, urea, ammonium chloride, calcium nitrate, potassium chloride, potassium sulfate, etc. In addition, the use of extrusion granulation technology can flexibly change product formulas in a very short period of time, and one set of equipment can produce more than 30 types of products with different formulas. The roller extrusion granulator is green and environmentally friendly, with no emissions of three wastes. Its consumption capacity for extrusion granulation is only for electricity, and it is environmentally friendly with no emissions of three wastes.