How to Use Disc Granulator to Make Fertilizer in Your Fertilizer Production Line?

The disc granulator is a key machine in fertilizer production lines, widely used for the granulation of various organic materials and compound fertilizers. It offers a simple and efficient method to transform raw materials into uniform spherical granules, which are easier to handle, store, and apply.

Preparing the Disc Granulator

  1. Ensure Proper Installation: Before using the disc granulator, make sure it is properly installed and firmly fixed in place. Check that all the components, including the disc, gearbox, and motor, are securely attached.
  2. Adjust the Angle: The disc angle plays a crucial role in determining the size and shape of the granules. Adjust the inclination angle of the disc according to the desired specifications. A steeper angle generally produces smaller granules, while a flatter angle results in larger granules.

Preparing the Raw Materials

  1. Material Selection: Choose high-quality raw materials for your fertilizer production. These can include organic waste, animal manure, crop residues, or chemical fertilizers. Ensure that the materials are well-dried and free from contaminants.
  2. Crushing and Mixing: If the raw materials are too large or uneven, use a crusher or grinder to reduce their size. It is important to achieve a uniform particle size for better granulation. Additionally, mix different materials together to create a balanced nutrient composition.

Operating the Disc Granulator

  1. Start the Disc Granulator: Ensure that the disc granulator is empty before starting. Turn on the motor and gradually increase the rotational speed to the desired level.
  2. Adjust the Disc Height: Set the disc height to ensure proper contact between the material and the disc. This will facilitate the rolling and agglomeration of the particles.
  3. Feeding the Materials: Uniformly feed the prepared raw materials onto the rotating disc. Maintain a steady and controlled feeding rate to achieve consistent granule size.
  4. Spraying Binder (Optional): In some cases, it may be necessary to add a binder to improve the strength and cohesiveness of the granules. Sprinkle the binder onto the material layer as it moves along the disc. Common binders include water, clay, or special binding agents.
  5. Granule Formation: As the materials roll and collide on the disc, they gradually form into spherical granules due to the forces of gravity and friction. The granules will grow in size as they accumulate additional layers of material.
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Granule Drying and Cooling

After the granulation process, the newly formed granules need to be dried and cooled to enhance their stability and prevent caking. This can be achieved through a rotary dryer and a cooling machine, respectively.

Packaging and Storage

Once the granules have been dried and cooled, they are ready for packaging. Use suitable packaging materials to preserve the quality and prevent moisture absorption. Store the packaged fertilizer in a cool, dry place away from direct sunlight.

Maintenance and Safety Considerations

Regularly inspect and maintain the disc granulator to ensure its optimal performance. Lubricate the moving parts, check for wear and tear, and address any issues promptly. Remember to follow safety guidelines, such as wearing protective gear and keeping bystanders away during operation.


By following these steps, you can effectively utilize a disc granulator in your fertilizer production line. The granules produced will possess improved handling characteristics and provide a balanced nutrient supply to plants, promoting healthy growth and higher crop yields. For details you can visit

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