Pan Granulation sludge

Steps of sludge biological fertilizer production process

1. The treated sludge (domestic sludge, industrial sludge, etc.), proper amount of qualified raw materials such as nitrogen, phosphorus, potassium, filler, etc. are sent to the raw material mixer in proportion to mix evenly.

2. Transfer to the disc feeder and add the evenly mixed material to the rotating disc of the pan fertilizer granulator through the continuous rotation of the disc. Go here for more details in auxiliary machine: 

3. The treated microbial strains are sprinkled on the disc material through the liquid component distributor of the pan fertilizer granulator, so that each particle is coated with microbial strains from the inside to the outside. The rotating disk and its edge have friction and centrifugal effect on the material, and the powder gradually gathers into the sphere. Due to the difference of particle mass, the gravity and centrifugation are different. When gravity and centrifugation increase enough to overcome friction between particles, they are thrown out of the disk, and smaller particles remain in the circle. Fine powder continues to accumulate in the dish.

4. The fertilizer is transported to the biological fertilizer dryer, and the initial drying of the fertilizer is completed by using the large airflow generated by the fan and the low-temperature hot air. Due to the species, the drying temperature is strictly controlled, and the drying temperature is lower than the survival temperature of the species.

5. Transport to the thermal screening separation particles and return the fine particles directly to the disc feeder as the core continues to participate in adhesion of the particles to the ball.

6. Transfer to the secondary biological fertilizer dryer to make full use of the high air volume and micro heat to dry bacterial fertilizer.

7. Transfer organic fertilizer cooler to cooling fertilizer by natural or forced cold air.

8. Transfer to finished product screening machine. The large particles are crushed by the crusher and returned to the disc homogenizer to continue to participate in the ball.

9. A small amount of microorganisms and bacteria are lost on the surface of the particles passing through the dryer, and the microbial species on the surface of the particles are supplemented by the coating machine. 

10. Transfer to automatic packing scale for weighing, packaging and storage.

11. The drying, cooling and workshop dust are treated by cyclone dust collector, dust removal room and wet washing to meet the standard and empty.

Sludge biological fertilizer production line

Advantages of Pan Granulation in fertilizer manufacturing process

The operation is intuitive and the operation of the equipment can be known at any time. If any abnormality is found, it can be adjusted in time.

The particle size depends on the inclination and rotation speed of the disc, which can be adjusted. Therefore, the pan manufacturing process has a wide range of particle size control, strong adaptability and very high granulation rate. The sludge fertilizer manufacturing process has the advantages of short production process, simple structure, less investment and convenient operation, which is suitable for small and medium-sized enterprises.