Organic fertilizer production line for powder/pellet

The production line of powdered compost and granular organic fertilizer needs to comprehensively consider the selection of raw materials, equipment configuration and process flow to ensure that the fertilizer produced is of high quality and high fertilizer efficiency.

Raw material selection

Organic fertilizer raw materials are mainly organic waste, which needs to be decomposed and harmless. Common raw materials include:

Basic raw materials

Livestock and poultry manure (chicken manure, cow manure, pig manure, etc.): high nitrogen source, needs to be dehydrated to a moisture content of ≤60%. Crop straw (corn stalks, rice straw): carbon source, crushed to 3-5cm before use. Kitchen waste: requires oil separation and crushing pretreatment. Mushroom residue (edible fungus waste): contains lignin, and the C/N ratio needs to be adjusted (25:1~30:1). Humic acid: improves fertilizer efficiency, and the addition amount is 5%~10%. Auxiliary materials

Microbial agents (EM bacteria, Bacillus subtilis): fermentation accelerators, added at 0.1%~0.3%. Mineral additives (phosphate rock powder, potassium feldspar): supplement trace elements. pH regulator (lime, gypsum): control pH 6.5~8.0.

List of core equipment

1. Powder production equipment

• Pretreatment equipment

Dehydrator (screw extrusion type): treat feces to a moisture content of ≤60%.

Crusher (hammer type): crush straw to 3-5mm.

• Fermentation system

Trough turner (with aeration system): fermentation cycle 15-20 days, temperature 55-70℃.

• Processing equipment

Chain crusher: secondary crushing to 80-100 mesh.

Drum screening machine (20 mesh screen): remove uncomposted impurities.

Double-shaft mixer: evenly mix bacterial agents and additives.

• Packaging equipment

Automatic quantitative packaging machine (accuracy ±0.5kg).

2. Granule production equipment

• Granulation system

Disc granulator (inclination angle 45-55°, speed 12-18r/min): suitable for sticky materials. Drum granulator: suitable for large-scale continuous production.

• Post-processing equipment

Rotary dryer (hot air temperature 80-120℃): moisture content reduced to ≤15%.

Cooler (countercurrent cooling tower): particle temperature reduced to room temperature.

Spheronization machine (optional): improve particle roundness.

• Sieving and coating

Vibration screening machine (grading 4-6mm qualified particles).

Coating machine (coating anti-caking agent).

• Production process flow chart

Powder process flow

Raw material pretreatment → Mixing and blending (C/N ratio) → Aerobic fermentation (turning + aeration) → Crushing → Screening → Adding bacterial agent → Mixing → Packaging

Key parameters: Fermentation temperature ≥55℃ for 5 days, maturity (seed germination rate ≥80%).

Pellet process

Powder raw materials → mixing and conditioning (water content 40%-50%) → granulation → drying → cooling → screening → coating → packaging

Granulation control: disc granulation requires the addition of a binder (such as bentonite 2%-5%); drying temperature ≤120℃ to avoid nutrient loss.

Reasonable selection of raw materials and equipment, and adjustment of technical parameters according to actual conditions can achieve efficient and low-cost organic fertilizer production while meeting environmental protection and quality standards.

If you have plans to build an organic fertilizer production line, please feel free to contact me! I will select the best fertilizer equipment for you and provide technical support. Looking forward to working with you!