The production line for processing pig manure into organic fertilizers mainly includes multiple stages such as fermentation, crushing, mixing, granulation, drying, cooling, screening, and packaging. Optimizing each stage can improve production efficiency and ensure the quality of organic fertilizers. The following are the main production processes for processing organic fertilizers from pig manure:

1. Pre treatment and fermentation of pig manure

Before starting production, preliminary treatment of pig manure is necessary. Pig manure raw materials usually contain a lot of moisture, impurities, and odors, so they need to be pretreated through fermentation and composting machines. The purpose of fermentation is to use microorganisms to degrade organic matter, remove excess water, and make it more suitable for use as organic fertilizer.

The fermentation process is generally divided into aerobic fermentation and anaerobic fermentation. Aerobic fermentation continuously flips the materials through a turning machine to ensure sufficient oxygen supply and promote microbial activity. After 3 to 5 days of fermentation, harmful substances in pig manure are degraded, odors are removed, and fertilizer components gradually stabilize.

2. Crushing and mixing

Fermented pig manure usually has certain lumps and uneven particles, which need to be crushed using an organic fertilizer grinder to make it more delicate and convenient for subsequent processing. In addition, pig manure usually needs to be mixed with other raw materials such as straw, plant residues, etc. to increase the nutritional content of organic fertilizers and promote fertilizer balance.

Equipment recommendation: Zhengzhou Huaqiang Organic Fertilizer Crusher adopts high-strength steel with a sturdy structure, which can effectively crush wet and dry materials, ensuring that the materials are uniform and delicate.

3. Granulation

The crushed and mixed materials enter the granulation stage, which is a key step in determining the quality of the final fertilizer granules. The granulation method of pig manure organic fertilizer generally adopts a roller extrusion granulator or a disc granulator. These two devices are capable of compressing the mixed material into particles, making it easy to transport, store, and use.

Roll squeezing granulator: This equipment is suitable for materials with high humidity and can produce organic fertilizer particles with high density and small particles. It is suitable for organic fertilizer products that require small particles.

Disc granulator: The disc granulator is suitable for producing large particle fertilizers and has good adaptability. It can quickly convert fertilizer materials into circular particles to meet different market demands.

4. Drying and cooling

After granulation, the moisture content of fertilizer particles is usually high, and it needs to be dried by an organic fertilizer dryer. After being dried by a dryer, the moisture content of the particles decreases, making it suitable for long-term storage and use. The dried fertilizer particles enter the cooling machine for cooling, ensuring that the particles do not stick due to high temperature, and the cooled particles are more stable.

5. Screening and packaging

After cooling, the fertilizer particles still need to be screened by a screening machine to remove unqualified particles and ensure the quality of the finished product. After screening, the qualified particles enter the packaging machine for packaging, which is convenient for storage and transportation.