Rotary drum granulator: Core equipment for continuous production in organic fertilizer lines

In modern organic fertilizer production lines, the rotary drum granulator, as a key piece of equipment, ensures the continuous and stable production process through its unique operating mode. This continuously operating cylindrical system is not only the core link in material forming but also a crucial hub connecting upstream and downstream processes.

From the perspective of the overall layout of the organic fertilizer production line, the rotary drum granulator occupies a critical position, connecting the preceding and following stages. Within the family of organic fertilizer granulators, the rotary drum type exhibits unique technological advantages. Compared to other types of organic fertilizer granulators, its continuous operation mode is particularly suitable for the needs of large-scale industrial production. The cleverly designed lifting plates and flow guiding devices inside the drum ensure thorough mixing of materials during the granulation process.

The rotary drum granulator demonstrates excellent stability in organic fertilizer production lines. The equipment can adapt to different organic raw material formulations, whether it’s livestock manure or straw waste, achieving ideal granulation results by adjusting operating parameters. This adaptability makes it an indispensable part of modern organic fertilizer production equipment.

From a production efficiency perspective, rotary drum granulators play a crucial role in organic fertilizer production lines. Their low energy consumption and maintenance costs, coupled with stable yield rates, create significant economic benefits for production enterprises.

With the continuous development of the organic fertilizer industry, rotary drum granulation technology is also constantly innovating, providing more reliable equipment support for organic fertilizer production lines.

Organic fertilizer production: The green art of transforming waste into treasure

With sustainable agriculture gaining increasing attention, organic fertilizer production has quietly become a crucial bridge between environmental protection and agricultural development. This seemingly simple organic fertilizer production line is actually a sophisticated journey of transforming waste into treasure.

Organic fertilizer originates from a variety of organic waste. Once a major headache, waste materials like livestock and poultry manure, crop straw, and food processing residues have become core raw materials. These materials first undergo pretreatment to remove impurities and undergo pulverization to adjust their physical structure. These raw materials then enter the fermentation stage, the heart of the entire process. Under specific temperature and oxygen conditions, microorganisms actively work, breaking down large organic molecules into smaller molecules that are more easily absorbed by plants, while also killing pathogens and weed seeds.

After fermentation is complete, the material enters the crucial formation stage—granulation. The fertilizer granulator plays a crucial role, using physical pressure to compress the loose powdered fertilizer into granules. This significantly reduces transportation and storage space.

The entire organic fertilizer production line, from raw material pretreatment, fermentation, and granulation to final drying, cooling, screening, and packaging, is closely coordinated. Modern production lines are moving towards greater automation and intelligence, aiming to precisely control every process parameter to ensure a stable and efficient final product.

Rotary drum granulators: A key player in improving fertilizer quality and efficiency

Amidst the growing demand for high-efficiency fertilizers in agriculture, rotary drum granulators, by optimizing the fertilizer production process, have become crucial equipment for driving quality and efficiency improvements.

From a fertilizer quality perspective, rotary drum granulators effectively address the clumping and uneven nutrient distribution issues of traditional fertilizers by precisely controlling the granulation process. During granulation, the raw materials and binder are thoroughly mixed, evenly encapsulating nutrients within the granules, preventing nutrient loss and reduced fertilizer efficiency. Furthermore, the resulting granules possess a moderate hardness, resisting breakage during transportation and storage, reducing fertilizer loss and indirectly improving actual fertilizer utilization.

In terms of production efficiency, rotary drum granulators utilize a continuous operation mode, effectively shortening production cycles. The drum volume can be designed to meet production capacity requirements, ranging from 1-5 cubic meters for small and medium-sized units to over 10 cubic meters for large units, meeting the production needs of fertilizer companies of varying sizes.

In addition, rotary drum granulators support innovation in fertilizer categories. With the increasing popularity of functional fertilizers (such as slow-release and controlled-release fertilizers and trace element fertilizers), this equipment can adapt to the granulation needs of different fertilizer formulations by adjusting parameters such as raw material ratio, temperature, and rotation speed.

For the green development of agriculture, the granular fertilizers produced by the rotary drum granulator facilitate precise fertilization, reducing soil pollution and water eutrophication caused by excessive fertilizer application. This indirectly contributes to sustainable agricultural development and serves as a vital link between fertilizer production and green agriculture.

Double roller press granulator: The core principles and characteristics of dry granulation

Double roller press granulators(fertilizer compaction machines), with their unique dry process, have become a mainstream option in fertilizer granulation production. This double roller press granulator eliminates the need for drying and converts powder into granules through pure physical extrusion.

The core operating mechanism revolves around twin-roll extrusion: an electric motor, via a reducer, drives two synchronously counter-rotating rollers, each with a uniform pattern of hemispherical dimples distributed across its surface. Once the dry powder enters the gap between the rollers, tens of tons of pressure displace the air between the particles, connecting them to form a dense cake. Upon exiting the rollers, the particles naturally break into oblate spherical granules. After subsequent crushing and screening, unqualified powder is automatically mixed back into fresh material for further processing, resulting in a granulation rate typically exceeding 90%.

The double roller press granulator utilizes corrosion-resistant and wear-resistant materials such as stainless steel, ensuring corrosion-resistant contact areas and a long roller life. Its compact design and easy maintenance, along with numerous quick-release features, allow for rapid adaptation to a variety of raw materials, including ammonium sulfate, organic fertilizer, and compound fertilizer.

New type two in one organic fertilizer granulator: Efficient integration, simplified production process

The new type two in one organic fertilizer granulator features an integrated “pretreatment + granulation” design, combining two core processes into one. It is the preferred equipment for small and medium-sized organic fertilizer companies to improve efficiency and reduce costs.

The core structure of this new type two in one organic fertilizer granulator consists of two modules: a “mixing and conditioning chamber” and a “granulation and forming chamber,” with the two chambers seamlessly connected. During operation, crushed organic fertilizer raw materials such as straw and fermented manure first enter the upper mixing and conditioning chamber, which is equipped with anti-entanglement stirring paddles. Dual-shaft counter-rotating stirring uniformly mixes the raw materials with a small amount of binder (such as starch residue and humic acid). Furthermore, moisture monitoring and spraying devices installed on the chamber wall ensure real-time adjustment of the raw material moisture to 18%-22%, preventing subsequent mold sticking and loose pellets.

Pretreated raw materials automatically fall into the lower granulation and forming chamber through a built-in material guide channel, eliminating the need for manual transfer. The forming chamber utilizes a flat die granulation core structure, paired with a trapezoidal, non-slip roller and a deep, straight-hole flat die. This not only cuts long fibers in the raw material (preventing them from tangling with the roller) but also achieves low-temperature granulation through vertical extrusion. The formed granules are discharged directly from the outlet, achieving a particle size uniformity exceeding 90%, eliminating the need for secondary screening.

In addition, the new type two in one organic fertilizer granulator is specifically optimized for the characteristics of organic fertilizer raw materials: the mixing chamber agitator is made of a wear-resistant alloy to mitigate frictional losses in fibrous raw materials; the flat die in the granulation chamber can be quickly replaced to accommodate various particle sizes ranging from 2 to 5 mm; and the entire machine is equipped with a variable-frequency motor that adjusts the speed according to the raw material’s moisture and viscosity.

Ring die granulator: Core equipment for efficient granulation in the fertilizer industry

Due to its unique granulation advantages, the ring die granulator has become a key choice for many fertilizer companies to improve production efficiency, providing strong support for the large-scale, standardized production of granular fertilizers.

The core competitiveness of the ring die granulator lies in its excellent molding effect and stable production capacity. Its core component, the “ring die,” efficiently converts a variety of raw materials, such as organic fertilizer and compound fertilizer, into granular products through precise die hole design and uniform extrusion force.

Furthermore, the ring die granulator’s adaptability meets the diverse production needs of the fertilizer industry. Whether processing high-moisture organic fertilizer raw materials or compound fertilizer formulations with varying nitrogen, phosphorus, and potassium ratios, the equipment can adapt to different raw material characteristics by adjusting parameters such as the ring die speed and extrusion pressure, easily achieving mass production.

For fertilizer companies, the ring die granulator is not only a production equipment but also a vital tool for enhancing product competitiveness. Against the backdrop of the growing agricultural demand for efficient, high-quality fertilizers, the ring die granulator will undoubtedly continue to play a key role in driving the fertilizer industry towards higher-quality production models.

Rotary drum granulators promote the resource utilization of organic waste, achieving “waste-to-fertilizer”

This “waste-to-fertilizer” resource utilization approach not only meets the needs of green development but also provides high-quality organic fertilizer for agriculture. In this process, the rotary drum granulator, with its adaptability to diverse organic waste types and efficient granulation capabilities, serves as a crucial bridge between “waste” and “qualified organic fertilizer.”

The core value of the rotary drum granulator lies primarily in its inclusive treatment of diverse organic waste types. For high-fiber waste such as straw, the rotary drum granulator uses the slow tumbling of its tilted drum, combined with the action of its lifting plates, to thoroughly mix the pulverized straw with a binder, evenly dispersing the fibers and gradually entrapping them into granules. This achieves a granulation rate exceeding 80%.

For high-moisture waste (30%-40%) such as poultry and livestock manure, the equipment uses a built-in ventilation device to regulate the humidity within the drum, achieving simultaneous “granulation and initial dehydration.” This eliminates the need for additional dehydration equipment, reducing processing steps and energy consumption. Even when processing food waste with complex composition, the rotary drum granulator’s flexible mixing design prevents impurities from clogging and ensures uniform granule shape.

Rotary drum granulators also enhance the commercial value of organic waste fertilizer. Ungranulated organic waste has a dispersed fertilizer effect, easily clumps, and is expensive to transport and store. However, the granulated organic fertilizer produced by a rotary drum granulator not only maintains a moisture content below 15%, facilitating long-term storage, but also allows for standardized granules to be created by adjusting the die aperture, meeting market demand for organic fertilizer that is easy to apply and has stable fertilizer effect.

New type two in one organic fertilizer granulator: A powerful tool for reducing costs and increasing efficiency

With the continued expansion of market demand for organic fertilizers, fertilizer companies are increasingly demanding higher efficiency, energy consumption, and space utilization in their production equipment. The emergence of new type two in one organic fertilizer granulators addresses these pain points, making them a key option for organic fertilizer manufacturers upgrading their equipment.

The core advantage of this type of new type two in one organic fertilizer granulator lies in its integration. It combines the functions of at least two pieces of equipment in the traditional granulation process into one, with common designs such as “mixing + granulation” or “granulation + preliminary drying.” For example, the “mixing + granulation” system simultaneously mixes raw materials such as pulverized straw and livestock manure with auxiliary materials. The integrated granulation mechanism then produces granules in one go. This not only reduces material loss by 15%-20%, but also saves approximately 30% of workshop space, making it particularly suitable for small and medium-sized manufacturers or production lines with limited space.

The new type two in one organic fertilizer granulator also offers improved process adaptability. It can process raw materials with a moisture content of 18%-30%, eliminating the need for excessive drying pretreatment. This reduces initial energy consumption and prevents nutrient loss from over-drying.

Furthermore, through optimized internal structure, the equipment ensures a stable pellet formation rate above 90%, resulting in highly uniform pellets with moderate hardness, meeting mainstream market demand for organic fertilizer pellets. Against the backdrop of green agricultural development, this type of highly efficient and energy-saving integrated equipment is driving organic fertilizer production towards greater efficiency and cost-effectiveness.

Rotary drum granulator: Core equipment for continuous granulation and multi-product compatibility

In large-scale fertilizer production, the rotary drum granulator, with its continuous and stable operation and compatibility with multiple fertilizer types, serves as a critical link between raw material mixing and pellet forming. It is particularly well-suited to the efficient production needs of medium- and large-scale enterprises, ensuring consistent pellet quality while reducing manual intervention costs.

Its core advantages lie in its “continuous operation” and adaptability. Firstly, the rotary drum granulator can operate continuously 24 hours a day, processing 5-50 tons/hour without frequent downtime adjustments, perfectly matching the batch production rhythm of fertilizer production lines.

Secondly, by adjusting the binder dosage, drum speed (low speed is suitable for sticky raw materials, high speed is suitable for loose raw materials), and tilt angle (to control material residence time), it can accommodate a variety of fertilizer types, including organic fertilizers, compound fertilizers, and organic-inorganic mixed fertilizers. It can even process organic fertilizers containing small amounts of fiber (the lifting plate design prevents fiber entanglement). In addition, the granule forming rate of the rotary drum granulator can reach over 85%, and the granules are highly rounded and of moderate hardness. No complicated crushing and screening are required afterwards, and they can directly enter the drying stage, which greatly simplifies the production process and provides a cost-effective solution for fertilizer companies to balance “capacity increase” and “quality stability”.

The key factor in selecting a double screws compost turning machine is accurately matching your needs

For fertilizer companies, choosing the right double screws compost turning machine can increase fermentation production capacity by 30% while also reducing energy consumption and labor costs.

1. Compatibility with Fermentation Tank Specifications

The operating width of the double screws compost turning machine must match the width of the fermentation tank (common widths are 3-6 meters), and the turning depth must match the tank depth. If the tank is too wide or too deep, the edge materials may not be turned properly.

2. Matching Processing Capacity with Production Capacity

Select the equipment’s processing capacity based on the daily fermentation raw material volume (a single machine can process 50-200 tons per hour). Small and medium-sized companies can choose a small machine (50-100 tons/hour). Large-scale production lines require a large double screws compost turning machine, while also allowing for 10% redundancy to account for raw material fluctuations.

3. Adaptability to Raw Material Characteristics

When processing livestock and poultry manure with high moisture content, choose equipment with spiral blades equipped with an anti-stick coating to prevent entanglement. When processing straw-like fiber materials, prefer models with a wide spiral blade spacing (15-20cm) to enhance material throwing and reduce clogging.

4. Power and Energy Considerations

Preferably choose models with variable frequency motors, which can adjust the speed based on the moisture and viscosity of the raw material. Also consider the double screws compost turning machine’s travel system. Track-type models are suitable for fixed fermentation tanks, while crawler-type models are suitable for flexible adjustments to the fermentation area.