Through the new process of particle polishing, the flat die pellet mill can produce organic fertilizer, organic-inorganic fertilizer and bio organic fertilizer. Organic fertilizer production process of by extrusion granulation is short, the operation cost of organic fertilizer production equipment is low, the particle compressive strength of organic fertilizer is high, the survival rate of microorganism is more than 90%, the granulation rate is 85-95%, and the particle diameter is 3.5-4 mm.
Characteristics of extrusion granulation organic fertilizer production process
1.Fermented organic materials can be directly used for flat die pellet mill processing without prior drying and crushing. Traditional granulation processes such as discs or drums require higher raw material fineness, that is, more than 80% of the material should reach a fineness of more than 80 mesh, so it needs to be pulverized. Due to the high moisture content of the organic materials after fermentation Before the crushing, the moisture needs to be dried to less than 13% to meet the crushing conditions. The equipment investment is large and the operating cost is high.
2. Flat die pellet mill can increase the amount of organic materials to more than 95%. In traditional granulation processes such as discs or drums, when organic materials above 80 mesh are used and the binder is added, the larger amount of organic raw materials is between 30-40%. Therefore, it is necessary to produce high content or Ball-type organic fertilizers of pure organic matter cannot be achieved with traditional granulation processes.