The production process of organic fertilizer is mainly to granulate and dry the organic waste with water content of about 30% decomposed by fermentation, prepare round organic fertilizer by granulation and drying, add functional bacteria to produce biological organic fertilizer, and add nitrogen, phosphorus and potassium (total nutrient content is less than 15%) to produce organic and inorganic fertilizer.
After screening the fermented organic waste, the binder raw materials and other components to be compatible are measured and proportioned in proportion, and quickly mixed by the bucket elevator into the fertilizer mixer for rapid mixing.
The material slides out of the mixing bin and is evenly and continuously fed into the flat die extrusion fertilizer granulator by the disc feeder to form columnar particles; Cylindrical particles (equal in diameter and length) are polished by a circular particle polishing machine. The spherical particles are sent to the drying, cooling and screening machine by belt conveyor.
The particles are dried at low temperature and large air volume in front of the drying cooling screening machine, and then enter the cooling section for air blowing. The cold and completely cooled materials enter the screen installed at the end of the cylinder, screen out the powder and large particles, and return to the mixed granulation system; The finished product particles are transported to the finished product silo by the elevator, measured, packaged and warehoused.
(1) The new technology of flat die extrusion granulation and rounding and finishing can produce “spherical” pure organic fertilizer, organic-inorganic fertilizer and biological organic fertilizer. The process is short, the operation cost is low, the organic fertilizer particles are uniform and round, the surface is smooth, the compressive strength is high, the fluidity is good, the microbial survival rate is > 90%, the granulation rate is 85-95%, and the particle size is 3.5-4mm.
(2) The new process of flat die extrusion granulation and rounding finishing has strong adaptability to raw materials and can solve the key technical problems that are difficult to be solved by traditional granulation processes such as disc or drum:
1. The fermented organic matter can be directly used for granulation without pre drying and crushing.
2. The amount of organic materials can be increased to more than 95%.
More detailed info on fertilizer production machines, go to https://fertilizerplantequiment.com/