Flexible & Efficient SSP Granulation Disc Granulator Production Line

SSP Pelletizing Line Overview with Disc Granulator
A Single Superphosphate (SSP) granulation line centered on a Disc Granulator (also known as a Pan Granulator) is a classic and highly effective solution for producing uniform SSP fertilizer pellets. This system is particularly renowned for its operational flexibility, excellent pellet sphericity, and suitability for small to medium-scale production capacities. The core principle involves a rotating, inclined disc where powdered SSP, along with binding agents, is formed into spherical pellets through a cascading and layering motion. This method is a form of wet granulation, ideal for creating strong, dust-free pellets that are easy to handle, store, and apply.

Key Features of a Disc Granulator-Based SSP Line

• Superior Pellet Shape & Uniformity: The tumbling action in the disc pelletizer naturally produces highly spherical and uniformly sized pellets, which are preferred for their professional appearance and even spreading characteristics.

• Excellent Process Visibility & Control: Operators can directly observe the pellet formation process on the disc, allowing for real-time adjustments to disc angle, rotation speed, and binder spray to optimize pellet size and quality.

• High Flexibility & Easy Operation: The line can easily accommodate changes in feedstock or formula. It is relatively simple to operate and maintain, making it a cost-effective choice for versatile production runs.

• Scalable for Targeted Output: Disc granulators are available in various diameters, allowing the production line to be precisely scaled to match specific output requirements without over-investing in excessive capacity.

Production Process and Workflow

1. Raw Material Preparation: Finely powdered Single Superphosphate is the primary feedstock. It is often pre-mixed with a filler or conditioning agent to achieve optimal granulation properties.

2. Binder Preparation & Mixing: A liquid binder (commonly water or a specific solution) is prepared. The SSP powder and binder are thoroughly blended in a mixer to form a homogeneous, damp mass with the right moisture content for nucleation.

3. Pellet Formation in Disc Granulator: The moist material is fed onto the rotating Disc Granulator. As the disc turns, the material rolls and gains layers, growing into spherical SSP fertilizer pellets. The pellet size is controlled by the disc's inclination, rotation speed, and retention time.

4. Drying: The "green" pellets from the disc have high moisture content and are soft. They are conveyed to a rotary dryer where controlled heat reduces moisture, hardening the pellets and ensuring storage stability.

5. Cooling & Screening: Hot pellets from the dryer are cooled in a rotary cooler to near ambient temperature, solidifying their structure. They are then passed over a screening machine to separate on-size product from dust (returned to the mixer) and oversized crumbs (crushed and recycled).

6. Coating & Packaging: Finally, the on-size pellets may be coated in a coating drum to prevent caking before being conveyed to an automatic packaging machine for bagging.

In summary, the potassium phosphate production line, centered around the disc granulator, with its excellent granulation quality, flexible operation and control, and moderate investment requirements, is an ideal choice for small and medium-sized fertilizer companies looking to enter the granular fertilizer market or upgrade their products. It successfully transforms powdered calcium phosphate into high-value granular products, directly enhancing product market competitiveness and profit margins. If you are looking for a small to medium-sized production line that can flexibly adapt to various formulations and has high requirements for the roundness of the finished granules, our disc granulator solution will be your perfect partner. Please feel free to contact us for a customized solution and detailed quotation tailored to your production needs.