Chicken, cattle, and pig Manure: How does organic fertilizer production equipment differ based on raw materials?

Livestock and poultry manures from different sources possess distinct physicochemical properties; consequently, equipment configurations for organic fertilizer production lines must be tailored to the specific type of manure. 1.Chicken Manure: High Nitrogen and High Viscosity—Focus on Deodorization and Granulation Chicken manure is characterized by high nitrogen content and high viscosity, and it readily generates significant amounts of ammonia gas. Production lines require robust deodorization systems, and compost turners should feature high shear force to break up clumps. After fermentation and decomposition, the material is fine-textured with moderate viscosity, making it ideal for disc granulators to produce highly uniform, spherical granules. 2.Cattle Manure: High Moisture and High Fiber—Focus on Dewatering and Extrusion Cattle manure has a moisture content exceeding 80% and contains coarse, long fibers. Pre-treatment requires a solid-liquid separator to reduce moisture to approximately 60%, while the turning stage necessitates a high-torque, low-speed chain-plate turner to cut through the long fibers. Due to low viscosity, extrusion granulation (using double-roller or flat die pelleting machines) is recommended to shape the material through physical pressure, as disc granulation yields poor results in this context. 3.Pig Manure: Fine Texture and High Sand Content—Focus on Preventing Wear and Clogging Pig manure falls somewhere between the other two types; it is fine-textured but contains significant sand (due to feed residues). This causes substantial wear on pulverizer and mixer blades, requiring equipment materials to undergo wear-resistant treatment. Post-fermentation viscosity is good, allowing for continuous production using rotary drum granulators; however, screening stages require larger mesh apertures to prevent clogging caused by fine sand. In summary, the key to chicken manure fertilizer production lines lies in optimizing deodorization and granulation; cattle manure lines face challenges regarding dewatering and fiber processing; and pig manure lines require designs that address wear resistance and screening efficiency. When selecting equipment, the three core stages—pre-treatment, turning, and granulation—must be adjusted according to raw material characteristics. The closer the equipment configuration aligns with the material's properties, the smoother the production line operates and the more stable the product quality becomes.