Organic fertilizer production line processing chicken manure: A comprehensive analysis of key considerations

fertilizer granulator Nov 3, 2025

Chicken manure, rich in nutrients and widely available, is a high-quality raw material for organic fertilizer production. However, due to its high moisture content, susceptibility to fermentation and spoilage, and the presence of impurities, key processes must be carefully controlled to ensure product quality and smooth production.

Pretreatment is fundamental. Fresh chicken manure typically has a moisture content of 70%-80%. It needs to be reduced to 55%-60% using organic fertilizer production equipment to prevent anaerobic putrefaction during fermentation. Simultaneously, impurities such as stones, plastics, and feathers must be removed manually or mechanically to prevent damage to subsequent equipment. If the chicken manure is severely clumped, it needs to be crushed to ensure uniform particle size, laying the foundation for fermentation.

The fermentation stage is crucial. Chicken manure has a high nitrogen content and needs to be mixed with straw, sawdust, and other carbon source materials in a specific ratio to adjust the carbon-to-nitrogen ratio to 25-30:1, promoting microbial activity. During fermentation, the compost pile needs to be turned regularly using a compost turning machine to ensure aeration and maintain a high temperature of 55-65℃ for 7-15 days to achieve sterilization, insect control, and decomposition.

Subsequent processing must be standardized. The decomposed chicken manure needs to be crushed and screened again to ensure there are no large pieces of uncomposted material, with a particle size controlled within 2 mm for easy granulation. During granulation, the material moisture content must be controlled at 20%-30% to avoid clogging the die holes; the drying temperature should not exceed 80℃ to prevent damage to organic matter and beneficial microorganisms. Simultaneously, the entire organic fertilizer production line must be properly sealed and deodorized to reduce odor diffusion and meet environmental protection requirements.

The connecting process of flat die granulator in organic fertilizer production line

fertilizer granulator Nov 1, 2025

In the overall process of an organic fertilizer production line, the flat die granulator plays a crucial “bridging” role. It receives the organic fertilizer raw materials from the preceding processes, after fermentation, crushing, and mixing, transforming the loose, powdery material into structurally stable granules, laying the foundation for subsequent drying, cooling, and packaging stages.

From a working principle perspective, the flat die granulator uses a motor-driven transmission mechanism to rotate the pressure rollers. When the raw material enters the machine, the pressure rollers exert extrusion force on the material, forcing it through pre-set die holes on the flat die, ultimately forming cylindrical or other shaped granules. This process requires minimal binders, relying primarily on the material’s own viscosity and extrusion force to achieve shaping, thus preserving the nutritional components of the organic fertilizer while avoiding the potential impact of chemicals on the soil.

For organic fertilizer production, the flat die granulator not only solves the problems of dust and caking during raw material transportation, but also controls the diameter and hardness of the granules by adjusting the die size and pressure roller pressure, meeting the needs of different crops and different fertilization scenarios. It is one of the indispensable core equipment in the production line.

Intelligent control: Improving the stability of organic fertilizer production lines

fertilizer granulator Oct 31, 2025

With the large-scale development of organic fertilizer production, intelligent control has gradually become a core means of improving organic fertilizer production line stability. Compared to traditional manual monitoring, intelligent systems can precisely control key parameters, reduce operational errors, and ensure consistent finished product quality.

Intelligent control is primarily applied in three key areas: First, fermentation process monitoring. By deploying temperature, humidity, and oxygen concentration sensors, the system collects real-time data from the fermentation chamber. When parameters deviate from the appropriate range, the system automatically triggers an alarm and adjusts the turning frequency and ventilation volume to prevent under- or over-roasting of the material. Second, granulation process control. Based on changes in material moisture content, the system automatically adjusts the fertilizer granulator machine speed and binder dosage to minimize problems such as granule clumping and breakage. Third, production data management. The system automatically records operational data from each stage, creating a production ledger that facilitates process traceability and allows for optimization of process parameters through data review.

This intelligent transformation of organic fertilizer production lines does not require replacing core equipment; it is often achieved through the addition of sensors and upgraded control systems. This reduces labor costs and improves the yield of finished products, making it suitable for small and medium-sized production enterprises to implement gradually.

Working principle and characteristics of double roller granulator for dry granulation

fertilizer granulator Dec 11, 2020

Working principle of double roller granulator

When the double roller granulator works, it is forced to roll the material into shape by two opposite moving roller skins of the granulator. Semi circular spherical cavities are regularly distributed on the two cylindrical roller skins. When the roller skin rotates against each other, the two semicircular cavities just form a complete spherical mold, and the materials inside are forced to be extruded into spherical particles. Due to the continuity of extrusion production, the particles and particles are connected together when they are just extruded, forming a cloth full of particles, which needs to be broken up by the crushing roller and divided into small round particles, and then screened from the screen to select the qualified particles.

In the production of granular fertilizer by double roller fertilizer granulation machine, it should be noted that the ball socket on the two roller skins should be in good position. If it is not adjusted in place, there will be a certain dislocation during granulation, which can not produce qualified granular fertilizer. In addition, after the formation of particles, they will be released from the ball and socket of roller skin in time, so as to realize continuous production. If the formed particles do not come out in time, complete particles will not be formed, thus affecting the normal production.

Characteristics of double roller granulator for dry granulation
1. There is no drying process in the organic fertilizer granulation machine. It is granulated at room temperature and formed in one time. It has the advantages of less investment, quick effect and good economic benefit.
2. Compound fertilizer double roll extrusion granulator has small power, reliable operation, no waste discharge, stable operation, convenient maintenance, reasonable process layout, advanced technology and low production cost.
3. The material of the roller extrusion granulator is widely used, not only in fertilizer industry, but also in all kinds of chemical raw materials such as snow melting agent.

Environmental protection granulation process of double roller granulator

fertilizer granulator Dec 11, 2020

The double roller granulator uses the way of forced extrusion to make particles, the whole process does not need drying and cooling, and the equipment investment is small. What’s more important is that this granulation method is a very environmentally friendly production mode because it is made of particles by physical methods, and the whole process has no pollution and no waste.

Environmental protection granulation process of double roller granulator

When the double roller extrusion granulator works, it is forced to roll the material into shape by two opposite moving roller skins of the granulator. Semi circular spherical cavities are regularly distributed on the two cylindrical roller skins. When the roller skin rotates against each other, the two semicircular cavities just form a complete spherical mold, and the materials inside are forced to be extruded into spherical particles. Due to the continuity of extrusion production of organic fertilizer granulation machine, the particles and particles are connected together when they are just extruded, forming a cloth full of particles, which needs to be broken up by the crushing roller and divided into small round particles, and then screened from the screen to select the qualified particles.

The fertilizer granulation machine has the advantages of low investment and good economic benefit. The complete set of equipment is compact in layout, scientific and reasonable, and advanced in technology. Energy saving and consumption reduction, no three wastes discharge, stable operation, reliable operation and convenient maintenance. It is suitable for granulation of various raw materials such as compound fertilizer, medicine, chemical industry, feed and so on.