In the organic fertilizer production line, fertilizer granulators play a crucial role as they can convert processed organic materials into uniform and stable granular form, which is not only convenient for storage and transportation, but also improves the effectiveness of fertilizer application in farmland. According to different production needs and technical characteristics, the following types of fertilizer granulators are commonly used in organic fertilizer production lines:
1. Pan Granulator
Working principle: The material rotates on a tilted circular disk and gradually aggregates into particles through the action of centrifugal force. By adjusting the spray system, water or adhesive is evenly sprayed onto the materials inside the tray to promote particle growth and hardening.
Advantages: Simple structure, easy operation, suitable for various organic materials, and low energy consumption.
Applicable scenarios: Suitable for small and medium-sized organic fertilizer production, especially friendly to producers who pursue cost-effectiveness.
Working principle: The material is compressed into thin sheets by a pair of rollers rotating in opposite directions, and then crushed into particles of the desired size due to strong pressure.
Advantages: No need to add additional binders, suitable for processing drier organic materials such as dry animal manure, urban sludge, etc.
Applicable scenarios: Especially suitable for processing materials that are difficult to agglomerate into particles in their natural state, suitable for medium to large-scale organic fertilizer production facilities.
3. Extrusion Pelletizer
Working principle: The material is forcibly fed into the mold hole through a screw propeller, and the material under high pressure is forced out of the mold to form a continuous column, which is then cut into particles of the desired length by a cutting mechanism.
Advantages: It can generate dense particles, suitable for producing high-density and high hardness organic fertilizers.
Applicable scenarios: Suitable for the production of biomass fuels and composite organic fertilizers, especially in the pursuit of high-strength particles.
4. Fluidized Bed Granulator
Working principle: the material is suspended in the fluidized bed, and the binder solution is sprayed through the spray system to make the particles collide and bond into larger particles in the air, and realize the drying process.
Advantages: It can complete granulation and drying in the same equipment, especially suitable for materials that require rapid drying, reducing subsequent processing steps.
Applicable scenarios: Suitable for the production of organic fertilizers with high requirements for finished product quality and drying speed.
5. Rotary Drum Granulator
Working principle: The material moves inside a horizontally or obliquely arranged drum as the drum rotates, and liquid is added through a spray system to promote the material to condense into particles.
Advantages: Large production capacity, suitable for large-scale continuous production, able to handle high humidity materials.
Applicable scenarios: Suitable for large-scale organic fertilizer production lines, especially in situations where high yield and high moisture materials need to be processed.
The choice of fertilizer granulator should be based on a comprehensive consideration of specific production needs, raw material characteristics, budget, and expected particle quality. Proper selection can not only significantly improve production efficiency, but also help reduce operating costs and ensure the market competitiveness of the final product.