A new type two in one organic fertilizer granulator solves raw material processing challenges

In organic fertilizer production, the challenge of bridging the gap between “mixing” and “granulation” is often amplified by differences in raw material characteristics. The new type two in one organic fertilizer granulator, integrating mixing and granulation, solves these problems with a design more closely suited to the characteristics of the raw materials.

Its most prominent advantage is its ability to handle “dry-wet mixtures.” For example, when mixing fresh chicken manure with a moisture content of 30% with dry straw powder with a moisture content of only 12%, the fertilizer granulator, within the same chamber, first uses the staggered rotation of a spiral stirring paddle to quickly interweave and blend the dry and wet materials. Simultaneously, a built-in micro-humidification device replenishes moisture to the dry material and guides the wet material to dry, resulting in a stable moisture content of 18%-22% after mixing.

It can also precisely control the proportions when dealing with “multi-component mixtures” of raw materials. Many organic fertilizers mix 3-4 raw materials, such as mushroom residue, rice husks, and humus, to enhance fertilizer efficiency. However, the densities of these different raw materials vary greatly. The new type two in one organic fertilizer granulator can automatically adjust the mixing speed according to the density of the raw materials. It slows down the mixing of heavier materials and speeds up the mixing of lighter materials, ensuring precise proportions of each raw material.

Even “difficult-to-bind fibrous raw materials” can be handled effectively. Raw materials like rice husks and peanut shells, with a fiber content exceeding 40%, tend to be loose when mixed alone. During the mixing stage, the two-in-one model uses a built-in shearing blade to cut long fibers into short fibers of 2-3 mm, which are then thoroughly mixed with other raw materials to form a mixture of “fiber skeleton + binding component.” No additional binder is needed during subsequent granulation, and the granules achieve the required hardness.

How is bio-organic fertilizer produced? A complete production line and core equipment analysis

How are piles of agricultural waste transformed into high-quality fertilizer rich in active microorganisms on a modern bio-organic fertilizer production line? This systematic processing chain integrates the collaborative operation of professional bio-organic fertilizer equipment, achieving a value transformation from “waste” to “soil nutrient.”

The journey begins with the pretreatment and scientific formulation of raw materials. Various organic raw materials are crushed, screened, and mixed in precise proportions, adjusting the carbon-nitrogen ratio and moisture content. This crucial step creates ideal conditions for subsequent fermentation, laying the technological foundation for the entire bio-organic fertilizer production line.

The core process lies in deep fermentation and the addition of microbial agents. The mixed materials enter the fermentation zone, where a windrow compost turning machine demonstrates its unique advantages. During the continuous 15-20 day aerobic fermentation process, the temperature undergoes a complete change curve, achieving complete harmlessness. When the temperature is suitable, professional functional microbial agents are precisely added, and active microorganisms begin to colonize and multiply in the material.

After fermentation, the material enters the refining stage. After obtaining powdered base fertilizer through crushing and screening, if it is necessary to improve the product’s marketability, it enters the granulation process. At this point, the rotary drum granulator comes into play. This not only improves the product’s appearance but also significantly enhances its storage and mechanized application performance.

This modern production line not only solves the problem of agricultural waste disposal but also produces biological products that can improve soil and enhance soil fertility, playing an increasingly important role in the construction of modern ecological agriculture.

The “Pellet Revolution” of cow dung: The recycling magic of the rotary drum granulator

In the core process of organic fertilizer production, the rotary drum granulator, with its unique working principle, is transforming cow dung from waste into high-quality granular fertilizer. This equipment, perfectly suited to the needs of ecological agriculture, unlocks a new path for the resource utilization of cow dung through a simple and efficient process.

First, the fermented cow dung needs to be pulverized into a uniform powder. Then, a small amount of binder and nutrient additives are mixed in a specific ratio to ensure granule formation and nutrient balance. When the mixture enters the tilted rotary drum, the centrifugal force and friction generated by the uniform rotation cause the material to tumble and agglomerate within the drum, gradually forming round and uniform granules. The entire process requires no complex chemical treatment, relying entirely on physical processes to achieve the desired shape. This preserves the organic matter and beneficial bacteria in the cow dung while avoiding secondary pollution.

The advantages of the rotary drum granulator are significant. Its large-capacity drum design is suitable for large-scale production, resulting in higher efficiency for continuous operation. It produces high-quality pellets with moderate strength, facilitating storage and transportation while preventing clumping. Furthermore, the equipment is highly adaptable to various materials, flexibly handling cow manure raw materials with different moisture levels and proportions, thus lowering the production threshold.

From an environmental burden on livestock farms to “fertile gold” for nourishing crops, the rotary drum granulator maximizes the value of cow manure. This process of transforming waste into green fertilizer not only helps solve livestock pollution problems but also injects momentum into the circular economy of agriculture.

Organic fertilizer production lines paired with rotary drum granulators achieve efficient granule production

A rotary drum granulator is an essential component for efficient granule production in organic fertilizer production lines. It is highly compatible with the production line, seamlessly integrating the entire process from material pretreatment to granule formation.

In the organic fertilizer production line, pre-treated materials, including crushing and mixing, are evenly fed into the rotary drum granulator. The rotating drum drives the materials into a tumbling and collision pattern. Combined with a spray system to precisely control moisture and binder dosage, uniform and dense organic fertilizer granules are quickly formed. Subsequently, the rotary drum granulator can be directly connected to cooling, screening, and packaging equipment, completing the entire production process.

Compared to other granulation equipment, the rotary drum granulator offers significant advantages in organic fertilizer production. Its flexible operation allows for customized adjustment of parameters such as speed and tilt angle to adjust granule size and strength. Its stable structure, smooth operation, and easy maintenance ensure long-term stable production line operation, helping companies achieve large-scale, high-quality organic fertilizer production.

Synergistic approach of fertilizer compaction machine and oil palm empty fruit bunch forming

As a fiber-rich organic waste, the key to the resource utilization of oil palm empty fruit bunches lies in their forming and processing. Fertilizer compaction machines, with their targeted structural design, have become the core equipment for unlocking the granulation challenges of this type of fibrous raw material.

From the perspective of raw material compatibility, oil palm empty fruit bunches retain a large amount of tough fibers after fermentation and decomposition. This type of material has low viscosity and is prone to entanglement. Fertilizer compaction machines optimize the cooperation between the pressure rollers and the die holes, employing a large-area contact extrusion design. This allows the fibrous material to naturally unfold and pass through the die holes in the correct direction under pressure, avoiding entanglement and jamming.

Simultaneously, during the extrusion process, the fibers intertwine to form a “net-like support structure,” eliminating the need for excessive binders. Forming can be achieved solely through mechanical force and the material’s own viscosity, reducing production costs while ensuring the environmentally friendly properties of organic fertilizer.

The synergistic advantages of the two are particularly prominent in terms of forming effect and fertilizer retention. The low-temperature extrusion process of the fertilizer compaction machine minimizes the damage to organic matter and beneficial microorganisms in the oil palm empty fruit bunches caused by high temperatures, while preserving the loose fiber characteristics of the formed granules.

Furthermore, this synergistic approach optimizes the production process. The loose structure of the oil palm empty fruit bunches reduces frictional wear within the extruder, extending the lifespan of easily worn parts. Meanwhile, the fertilizer compaction machine’s high-efficiency forming capability rapidly transforms the decomposed oil palm empty fruit bunches into regular granules, solving the problems of dust generation during transport and uneven application of loose materials.

Flat die pelleting machines: A flexible solution for processing fiber materials in organic fertilizer

In organic fertilizer granulation equipment, flat die pelleting machines are often praised for their adaptability and convenience, but their “flexible advantage” in processing fibrous materials is rarely mentioned. Thanks to its unique structural design, the flat die pelleting machine processes fibrous organic raw materials in a “gentle and adaptable” manner, ensuring molding efficiency while preserving the original characteristics of the material to the greatest extent.

Its “gentleness” stems from the design logic of its core structure. The large-area contact between the flat die and the pressure rollers allows for more even force distribution on the material, avoiding fiber breakage or nutrient damage caused by excessive local compression. For fibrous raw materials such as oil palm empty fruit bunch and decomposed straw, this force distribution allows the fibers to form a “net-like support structure” inside the granules, enhancing particle adhesion without damaging the physical properties of the fibers.

This “flexible processing” is also reflected in the material itself. The die orifice distribution and pressure roller speed design of the flat die pelleting machine allow the fibrous material to naturally unfold and pass through the die orifices in the correct direction during extrusion, reducing the probability of entanglement and blockage. No additional binders are needed; the material can be shaped solely by the inherent toughness of the fibers and the adhesiveness of the material.

With the increasing diversification of organic fertilizer raw materials, the “gentle and adaptable” characteristics of the flat die pelleting machine perfectly meet the needs of resource utilization of fibrous waste. It solves the shaping problem of such raw materials and endows organic fertilizer with superior physical properties and fertilizer efficacy.

Core requirements for materials processed by the new type two in one organic fertilizer granulator

While the new type two in one organic fertilizer granulator simplifies the organic fertilizer production process with its integrated design, it has more specific requirements regarding the adaptability of the processed materials.

Precise control of material particle size is crucial. Raw materials entering the new type two in one organic fertilizer granulator must undergo crushing and screening to ensure uniform particle size controlled within the 1-3 mm range. Large impurities or incompletely crushed lumps in the material will not only clog the equipment’s feed channel and die holes but may also accelerate the wear of internal components, affecting granulation continuity. Excessively fine powdery materials are prone to generating dust and will result in insufficient granule strength after molding.

Material moisture control is critical. The suitable material moisture content is 20%-30%, which needs to be fine-tuned based on the raw material composition. Excessive moisture content causes the material to easily clump together inside the machine, leading to a decrease in granulation rate and potentially causing die blockage. Insufficient moisture content results in a lack of viscosity, making it difficult to form through extrusion or granulation processes, and even if formed, it is prone to breakage.

The material composition ratio must be scientific. The carbon-to-nitrogen ratio of the raw materials should be maintained at 25-30:1. Avoid imbalances in the proportion of single high-nitrogen raw materials (such as poultry and livestock manure) or high-carbon raw materials (such as straw), otherwise the stability of the fertilizer effect after pelleting will be affected. At the same time, the proportion of fiber components in the material should not be too high. Excessive fiber can easily entangle equipment parts, requiring pretreatment to decompose some coarse fibers. If the raw material lacks viscosity, a suitable amount of natural binder can be added to improve the pelleting effect.

Furthermore, the material must be fully decomposed. Undecomposed raw materials may undergo secondary fermentation after granulation in the new type two in one organic fertilizer granulator, causing the pellets to expand and break, and potentially leading to seedling burn during fertilization.

Environmentally friendly and highly efficient: The adaptability of flat die granulators in organic fertilizer production

With tightening environmental policies and increasing agricultural demand for green organic fertilizers, organic fertilizer production lines are placing higher demands on the environmental friendliness and efficiency of their equipment. Flat die granulators excel in both aspects, making them a better fit for the industry’s development needs.

From an environmental perspective, flat die granulators utilize extrusion molding during the granulation process, eliminating the need for high-temperature heating and avoiding the emission of harmful gases caused by high temperatures. Simultaneously, the equipment’s robust sealing design effectively reduces dust generated during raw material transport and extrusion, minimizing the impact on the workshop environment and operator health. Furthermore, flat die granulators have relatively low energy consumption, requiring less electricity during operation compared to some high-energy-consuming granulation equipment.

Regarding efficiency, while the granulation efficiency of flat die granulators is not as high as that of large ring die granulators, its output is sufficient to meet the production needs of small and medium-sized organic fertilizer production lines. The equipment’s flexible start-up and shutdown capabilities allow for adjustments to the operating rhythm based on raw material supply and order demand, reducing wasted capacity. Meanwhile, the granulated organic fertilizer produced by the flat die granulator can slowly release nutrients when applied, improving fertilizer utilization and indirectly contributing to the high efficiency of agricultural production.

Equipment operation and maintenance for organic fertilizer production lines

The stable operation of an organic fertilizer production line depends on scientific equipment selection and standardized routine maintenance.

When selecting equipment, the characteristics of the raw materials should be considered first. If processing high-fiber raw materials such as straw and mushroom residue, a shearing pulverizer should be selected to ensure uniform pulverization. If the raw materials are high-humidity materials such as livestock and poultry manure, the dehydration equipment’s processing capacity should be carefully considered to avoid excessive moisture in the subsequent fermentation process.

Secondly, production capacity adaptability is crucial; the equipment’s processing capacity must match the overall production capacity of the production line. Furthermore, the level of automation should be determined based on the scale of the enterprise. Small and medium-sized enterprises can choose semi-automated equipment to control costs, while large enterprises can adopt fully automated control systems to improve production stability and management efficiency.

Routine maintenance is key to extending equipment life and reducing malfunctions. Grinding equipment requires regular inspection of tool wear and prompt replacement of severely worn blades to prevent degradation of pulverization efficiency. Fermentation turning equipment requires weekly inspection of transmission component lubrication to prevent damage due to insufficient lubrication. Fertilizer granulator molds require daily cleaning to remove residual material and prevent clogging that could affect pellet quality. The combination of scientific selection and standardized maintenance can effectively improve the operating efficiency of the organic fertilizer production line, reduce the failure downtime rate, and ensure continuous and stable production.

Binderless pellet formation process for chicken manure organic fertilizer

Due to its “dry granulation” characteristics, the fertilizer compaction machine eliminates the need for large amounts of binders, maximizing the active organic matter and nutrients in the manure. It is an ideal machine for granulating chicken manure organic fertilizer.

Mature chicken manure must first be crushed and screened to break up any remaining lumps and ensure a uniform particle size (typically 60-80 mesh). This prevents large particles or impurities from affecting the extrusion process. The moisture content must also be strictly controlled, maintaining it between 45% and 50%. Excessive moisture can cause sticking to the rollers during extrusion, while excessive dryness can hinder agglomeration and formation. If the crude fiber content of the chicken manure is too high, a small amount of humus or wood ash can be added to improve the material’s plasticity and enhance pellet strength.

The mixed material is conveyed through a conveyor to the fertilizer compaction machine. The core working components of the machine (a twin-roller or spiral structure) use high pressure to compress the loose material into a continuous sheet or strip intermediate. This intermediate is then processed through crushing and spheronization to form pellets of uniform size. The formed granules are first screened and graded. Unqualified fine powder or large lumps are returned to the crushing stage for reprocessing. Qualified granules enter a cooling facility and are packaged after cooling to room temperature.

Chicken manure organic fertilizer processed by the fertilizer compaction machine has high granular strength and is less prone to moisture absorption and agglomeration. This preserves the natural nutrients of the chicken manure while solving the inconvenience of handling bulk materials. This is a high-quality processing solution that balances nutrient retention and practicality.