With the advancement of green agriculture, powdered organic fertilizer has become a preferred fertilizer for agricultural production due to its intact nutrient retention and strong adaptability. While the production line does not require complex granulation processes, it must follow standardized procedures to transform organic waste into qualified products. The core process can be divided into five key steps, each interconnected to ensure product quality and environmental compliance.
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Raw material pretreatment is the foundation of production. Workers first collect organic raw materials such as livestock and poultry manure, straw, and mushroom residue. Impurities such as stones and plastics are removed through screening. Then, a solid-liquid separator dehydrates the high-moisture raw materials to a moisture content of 55%-65%. Finally, a pulverizer grinds the raw materials to a uniform particle size. Simultaneously, auxiliary materials are blended in proportion, controlling the carbon-to-nitrogen ratio at 25:1-30:1 to create a suitable environment for microbial fermentation.
High-temperature fermentation is the core step of the production line. The blended materials are fed into fermentation equipment, using an aerobic fermentation method. Aeration is supplied by fans, and the compost is turned regularly by a compost turning machine, maintaining the temperature at 55-65℃ for 7-10 days. This process kills pathogens and insect eggs, decomposes organic matter by microorganisms, removes odors, and transforms the material into a mature organic substrate.
Maturation and aging are crucial for quality improvement. After fermentation, the material is transferred to an aging area and left for 15-20 days. During this period, it is regularly turned and ventilated to allow further moisture evaporation and nutrient stabilization. Simultaneously, large pieces of incompletely decomposed material are sorted and returned to the crushing stage for reprocessing to avoid affecting the quality of the finished product.
Crushing and screening determine the product's appearance. The matured material is crushed a second time to 80-100 mesh, then screened by a drum screener to separate qualified fine powder from coarse material. The coarse material is returned to the fermentation or crushing stage for recycling, ensuring the finished product has uniform particle size and is free of impurities.
Finished product packaging is the final stage. Qualified powdered organic fertilizer is filled using an automatic packaging machine, packaged into 25kg, 50kg, and other specifications according to market demand, with measurement accuracy controlled within ±0.5kg. After packaging, it is stored in a dry and ventilated warehouse, completing the entire production process.
This process not only realizes the resource utilization of organic waste, but also complies with environmental protection standards. Each step directly affects the fertilizer efficacy and safety of the final product, and is an important support for promoting the development of circular agriculture.
