Industry Info

Fertilizer granulators commonly used in NPK fertilizer production lines for granulation

2024/09/27
 

The NPK fertilizer (nitrogen phosphorus potassium compound fertilizer) production line usually uses several efficient and professional fertilizer granulators in the granulation process to ensure particle quality, improve production efficiency, and reduce energy consumption. Below are several commonly used fertilizer granulators and their characteristics:

1. Disc granulator

The disc granulator is the most traditional and widely used granulation equipment. It rolls the material into spherical particles under the action of centrifugal force through a rotating inclined disk. Its characteristics are intuitive operation, easy maintenance, suitable for large-scale continuous operations, especially adept at manufacturing medium to large particles.

2. Roll squeezing granulator

The roller extrusion granulator applies high pressure to powdered materials through two opposing rotating pressure rollers, forming them into strips, and then cuts them into particles of the desired size through a crushing device. This method produces particles with high strength and regular shape, especially suitable for hard materials and situations requiring high particle strength.

3. Fluidized bed granulator

The fluidized bed granulator uses air suspension technology to make the material in a fluidized state inside the container, while spraying liquid adhesive to gradually grow the particles. The particles produced in this way have good fluidity and looseness, making them suitable for products that require precise control of particle size and shape.

4. High tower granulator

The high tower granulator uses special spray granulation technology to spray molten liquid fertilizer through a high-speed nozzle in a high tower, cool and solidify to form particles. This method can produce very uniform particles, but due to high investment costs, it is mainly used for the production of high-end fertilizers.

5. Extrusion expansion granulator

The extrusion expansion granulator instantly expands the material into particles under high temperature and high pressure conditions, and is commonly used for processing heat sensitive materials. This method can effectively avoid thermal damage to materials and is suitable for specific types of fertilizer granulation.

6. Belt granulator

Belt granulators use special molds on one or more conveyor belts to form particles of material during movement. This method is suitable for continuous production and has good controllability of particle size.

Each type of fertilizer granulator has its unique working principle and applicable scenarios. Choosing the appropriate model requires comprehensive consideration of factors such as raw material characteristics, expected particle specifications, production capacity, energy consumption level, and budget. In actual production, it is often necessary to carry out subsequent processes such as drying, screening, and packaging to ensure that the final product meets the quality standards.

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