Organic Fertilizer Granulation Process Know How

The manufacturing process of organic fertilizer is mainly to screen and magnetic separate the organic waste with a water content of about 30% ~ 35% after fermentation and decay to make a round grain organic fertilizer, add functional bacteria to produce biological organic fertilizer, and add nitrogen, phosphorus and potassium (the total nutrient content is less than 15%) to produce organic and inorganic fertilizers.

Bio Fertilizer Plant Design
Bio Fertilizer Plant Design

After the fermented organic waste is screened by magnetic separation, the raw materials containing binder and other compatible components are measured according to the proportion requirements, and then lifted by bucket elevator to multi-dimensional high-efficiency mixer for rapid mixing.

The mixed material slides out of the mixing bin and is continuously and evenly sent to the extrusion granulator by the disc feeder to make cylindrical particles; The cylindrical particles are polished into spherical particles by the circular particle polishing and setting machine and formed by the belt.

The machine is sent to the drying, cooling and screening machine (three in one model). The particles are dried at low temperature and large air volume (≤ 65 ℃) in the front section of the drying cooling screening machine, and then enter the cooling section for air cooling. After sufficient cooling, the materials enter the screen installed at the end of the cylinder.

The screened finished product particles are transported to the finished product silo by the elevator and measured and packaged by the packaging system; The screened large particles are crushed and returned to the mixed granulation system; The screened small particles (basically without powder) can be made into small packages and sold directly. Get more details on the granulation process, go to