Application of disc granulator in compound fertilizer production

Process introduction



Disc Granulator plays a vital role in the production of compound fertilizer. The process mainly includes the following steps:

1, raw material preparation: First of all, nitrogen, phosphorus, potassium, filler and other qualified raw materials in accordance with the formula proportion of the delivery to the relevant weighing equipment to ensure the accurate ratio of raw materials.

2, mixed evenly: the raw materials after weighing are transported to the mixer for strong mixing, so that all kinds of raw materials are fully mixed and uniform, laying a good foundation for the subsequent granulation process.

3, granulation molding: the mixed material is evenly added to the rotating disc of the disc granulator through the material homogenizer. At the same time, an appropriate amount of water or liquid components is sprinkled on the material through the liquid component distributor to meet the amount of liquid phase required for ball formation. The rotating disc and the edge of the disc produce friction and centrifugal effect on the material, so that the material kneads and squeezes each other, and gradually gathers into a ball. When the gravity and centrifugal action of the particles are large enough, the particles are thrown out of the disc and enter the next step.

4, drying and cooling: the fertilizer after granulation is transported to the Rotary Dryer (Drum Fertilizer Dryer), and the heat from the hot blast stove for heat exchange, remove water. The fertilizer then enters the Rotary Cooler (Drum Fertilizer Cooler) and is cooled by natural or forced cold air to ensure the quality and stability of the fertilizer.

5. Screening and packaging: the cooled fertilizer enters the screening machine for screening, the fine particles are returned to the material homogenizer for re-granulation, and the large particles are also returned after being crushed. The qualified fertilizer is sent to the Coating Machine for coating treatment to improve the quality and appearance of the fertilizer. Finally, the fertilizer is weighed, packed and stored by a fully automated packaging scale.

Practical application effect and cost analysis

The practical application effect of disc granulator in compound fertilizer production is remarkable:

High ball forming rate: The ball forming rate of the disc granulator can reach 70% to 90%, the particles are round and strong, which is conducive to the storage and transportation of fertilizers.

High production efficiency: the disc granulator has simple structure, intuitive operation, convenient for continuous production operations, and greatly improves production efficiency.

Less investment and quick effect: the disc granulator does not need complex drying process, normal temperature granulation, a molding, the investment cost is relatively low, and can quickly produce economic benefits.

From a cost point of view, the disc granulator reduces waste generation and reduces production costs by optimizing the production process. At the same time, its efficient production capacity and stable product quality have also won more market share and customer trust for the company.