Cow dung is excellent raw material for organic fertilizer. Through specialized organic fertilizer production lines, it gets transformed into high-value commercial organic fertilizer.
1.Raw Material Collection and Pre-treatment
Manure Collection: Machines collect manure from barns. Moisture content is usually 70-80%.
Solid-Liquid Separation: A separation machine removes water, reducing the solid part’s moisture to below 60%.
Mixing Ingredients: Add bulking agents like straw or mushroom residue (adjusting C/N ratio to 25-30:1) and special fermentation bacteria.
2.Core Fermentation Process
Composting: Use a trough-type or windrow turner. Pile height: 1.5-2 meters.
Temperature Control:
Initial stage: Quickly heat above 55°C for 7 days.
Middle stage: Maintain 45-55°C for 15-20 days.
Final stage: Cool down below 40°C.
Turning: Turn the pile every 2-3 days to ensure even oxygen supply.
3.Deep Processing
Crushing and Screening: Crush the fermented material below 3mm and remove impurities.
Granule Forming: Use a flat die or ring die granulator. Control material moisture at 25-35%. Granule size is typically 4-6mm.
Drying and Cooling: Dry at 60-80°C to reduce granule moisture below 15%, then cool to room temperature.
4.Finished Product Handling and Storage
Screening and Coating: Use a grading screen to sort qualified granules. Apply anti-caking coating if needed.
Packaging and Storage: Pack in 25kg/bags or bulk bags. Store in a dry, ventilated warehouse.
This organic fertilizer production line achieves harmless treatment of cow dung, with a resource utilization rate over 95%. Optimizing the fermentation process and parameters significantly improves fertilizer quality, raising organic matter content above 45%.