The production process of organic fertilizer mainly involves mixing organic solid waste with a moisture content of less than 60%, auxiliary materials (such as plant straw), microbial fermentation agents, etc. evenly, and using aerobic continuous fermentation in a pool to fully mature, sterilize, deodorize, and remove water. The moisture content of the decomposed material is generally within the range of 30-35%. After screening and magnetic separation, it can be directly used for granulation to produce spherical organic fertilizer, or further dried to produce powdered organic fertilizer.

Granulation process flow

The process flow of compound fertilizer can be divided into: raw material batching, raw material mixing, raw material granulation, particle drying, particle cooling, particle grading, finished product coating, and post finished product packaging.

1. Raw material ingredients:

Raw materials such as urea, ammonium sulfate, ammonium phosphate (monoammonium phosphate, diammonium phosphate, dicalcium sulfate, potassium sulfate), etc. are prepared in a certain proportion (based on market demand and soil testing results in various regions).

2. Raw material mixing:

Mix the prepared raw materials evenly to increase the overall uniform fertilizer efficiency content of the fertilizer particles.

3. Raw material granulation:

Send the evenly mixed raw materials into the granulator for granulation (either through conversion granulation or extrusion granulation).

4. Particle drying:

Send the granules made by the granulator into the dryer to dry the moisture contained in the granules, increase their strength, and facilitate storage.

5. Particle cooling:

The temperature of the dried fertilizer particles is too high, making them prone to clumping. After cooling, they are easy to store in bags and transport.

6. Particle grading:

Classify the cooled particles, grind and re pelletize the unqualified particles, and sieve out the qualified products.

7. Finished film:

Coat qualified products with coating to increase the brightness and roundness of particles.

8. Finished product packaging:

Bag the particles of the film, which are the finished products, and store them in a well ventilated area.