What is the working principle of organic fertilizer granulation equipment

 The working principle of organic fertilizer granulation equipment is mainly based on physical and chemical methods to process fermented organic materials into regular granules. This process involves multiple steps and technologies. Below are several common organic fertilizer granulation technologies and their principles in detail:


1. Roller granulation

Principle: Drum granulation is the most common method, mainly relying on the rotational force of the drum to make the material roll inside the drum, gradually forming spherical particles. In this process, the material helps shape the particles through its own adhesion and external humidification (if necessary). As the drum rotates, smaller particles will be compressed around larger particles, gradually increasing until reaching the desired size.

2. Disc granulation

Principle: The disc granulator rotates through an inclined circular disc surface, and the material rolls on it. With the help of centrifugal force and friction, the material begins to aggregate and gradually form particles. The angle, rotational speed, and humidity of the disc can affect the size and shape of the particles.

3. Extrusion granulation

Principle: The extrusion granulator uses high pressure to extrude organic materials through a mold with a certain shape, forming tight strip-shaped or rod-shaped objects, and then cutting them into particles. This method is commonly used to handle materials that are harder and have a certain degree of viscosity, resulting in particles that are more regular and have higher hardness.

4. spray granulation

Principle: spray granulation is the process of spraying liquid or slurry materials into extremely fine droplets under high temperature conditions, rapidly evaporating water and solidifying into solid particles. This method is suitable for materials that require special processing conditions, such as certain microbial fertilizers.

5. Particle reinforcement

Regardless of the granulation method, in order to improve the strength and stability of the particles, an appropriate amount of binder, such as starch, bentonite, etc., is often added before and after granulation. They can increase the adhesion between materials, making the particles more solid and durable.

The selection of these organic fertilizer granulation equipment and technologies depends on the characteristics of the raw materials, the required particle size, shape, and final use. Through scientific and rational granulation technology, the form of organic fertilizers can be made more regular and beautiful, improving the efficiency and market competitiveness of fertilizer use, while also facilitating storage and transportation.

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