Precise matching, no waste! Configuring fertilizer production lines based on raw materials

The core of fertilizer production line configuration is “raw material adaptation.” Different raw materials (moisture content, particle size, and composition) require significantly different choices of pre-treatment, fermentation, and granulation equipment. Blindly copying generic solutions easily leads to low capacity, poor product quality, and high energy consumption.

If the raw material is high-moisture livestock and poultry manure (such as chicken manure, pig manure, with a moisture content of 60%-80%): the pre-treatment stage requires a solid-liquid separator and crushing and screening equipment to reduce moisture to 55%-60%, remove impurities, and finely process the material; the fermentation stage uses a trough-type or crawler-type compost turning machine to ensure ventilation and oxygen supply, accelerating decomposition; the granulation stage prioritizes an organic fertilizer disc granulator (wet granulation), paired with a dryer and cooler, to adapt to the molding needs of high-moisture raw materials, followed by a screening machine and packaging machine to complete the entire process.

If the raw material is dry, loose organic material (such as straw, sawdust, with a moisture content of 10%-20%): the core of pre-treatment is crushing and mixing, using a high-speed crusher to refine the raw material to 2-5 centimeters, and then mixing it with livestock and poultry manure and fermentation agents to adjust moisture and carbon-nitrogen ratio; the fermentation stage can use a windrow compost turning machine, adapting to the turning needs of loose materials; the granulation stage is suitable for a double roller press granulator (dry granulation), requiring no additional water, directly extruding and forming the material.

If the raw material is industrial organic waste residue (such as mushroom residue, pharmaceutical residue, with complex composition): a pre-treatment screening stage needs to be added to remove heavy metals and other harmful impurities, and then a special mixer is used to precisely adjust nutrients; the fermentation stage uses a closed trough-type compost turning machine to control odor diffusion; the granulation stage selects a flat die or ring die pelleting machine based on the viscosity of the waste residue.

Core adaptation principle: First, clarify the three key indicators of raw material moisture content, particle size, and composition, and then sequentially match the core equipment for pre-treatment, fermentation, etc.

Wet chicken manure treatment: The most suitable resource utilization solution

Wet chicken manure has a high moisture content of 60%-80% and is rich in nutrients such as nitrogen and phosphorus. Improper disposal can lead to bacterial growth, soil and water pollution, and environmental problems. Among various treatment methods, “fermentation to produce organic fertilizer” is the optimal choice, balancing environmental protection, economic viability, and resource recycling. It effectively solves pollution problems while transforming waste into high-quality agricultural resources.

Common wet chicken manure treatment methods have limitations: direct application to fields can burn roots and seedlings, and does not eliminate pathogens and insect eggs; drying and direct use is energy-intensive and costly; simple composting has a long decomposition cycle and easily produces foul odors. Fermentation to produce organic fertilizer, through scientific processes and specialized equipment, precisely addresses these issues, achieving efficient resource utilization of wet chicken manure.

The optimal treatment process can be divided into three steps: First, pretreatment involves mixing wet chicken manure with auxiliary materials such as straw and sawdust in appropriate proportions to adjust the moisture content to 55%-60%, followed by crushing and screening to remove impurities; second, fermentation and composting involves using a crawler-type compost turning machine for regular turning, ensuring ventilation and oxygen supply to the compost pile, maintaining a high temperature of 55-65℃ for 15-20 days to thoroughly kill pathogens and insect eggs, and allowing the material to fully decompose; third, shaping and processing involves sending the composted material into an organic fertilizer granulator to produce granular organic fertilizer, facilitating storage, transportation, and field application.

This fermentation-based treatment solution can be used to build small-scale or large-scale organic fertilizer production lines with appropriate equipment, adapting to the needs of different farming scales. It not only completely solves the pollution problem of wet chicken manure but also produces high-value organic fertilizer, achieving a closed-loop cycle of “livestock waste – agricultural resources.”