organic fertilizer equipment

Anti-Caking agents: The key solution to solving the problem of NPK fertilizer caking

2026-01-09 by organic fertilizer production line

NPK fertilizers are prone to caking during storage and transportation, which not only affects ease of application and leads to uneven nutrient distribution, but also interferes with subsequent operations on the NPK fertilizer production line, increasing the burden of secondary processing on core equipment such as NPK fertilizer granulators and fertilizer mixer machines. The core causes are moisture absorption and deliquescence on the particle surface, crystal bridging, and inter-particle pressure. Anti-caking agents can block the caking pathway through scientific mechanisms, ensuring the loose state and stable quality of the fertilizer.

Anti-caking agents mainly work through three mechanisms: firstly, physical isolation, where inert powders or hydrophobic substances uniformly coat the particle surface to form a protective film, isolating water and oxygen and preventing particle adhesion; secondly, moisture control, where some anti-caking agents preferentially adsorb environmental moisture, reducing the water content of the particles and inhibiting crystal bridge formation at the source; and thirdly, improving particle characteristics, increasing surface smoothness, reducing inter-particle friction and adhesion, and alleviating extrusion and adhesion under stacking pressure.

The application of anti-caking agents needs to be integrated into the core process of the NPK fertilizer production line, considering both compatibility and dosage. It is recommended to add them simultaneously during the mixing and conditioning stage in the fertilizer mixer to ensure uniform blending with the particles; at the same time, the parameters of the NPK fertilizer granulator machine should be considered, and the type should be selected according to the characteristics of the granulated particles, such as hydrophobic types for monoammonium phosphate-based fertilizers, and composite types for high-nitrogen fertilizers.

organic fertilizer equipment

High-efficiency granulation in large-scale rotary drum granulation production lines

2026-01-09 by organic fertilizer production line

In large-scale organic fertilizer production, rotary drum granulators, as the core type of organic fertilizer granulator, have become the “central equipment” of rotary drum granulation production lines due to their excellent adaptability and production capacity advantages.

The core advantages of rotary drum granulators are “wide adaptability and high production capacity.” Compared with other organic fertilizer granulators, they have a higher tolerance for raw material moisture and viscosity, and can process diverse materials such as composted livestock and poultry manure and straw fermentation materials with a moisture content of 20%-30%, without the need for excessive fine pre-treatment. The equipment’s molding rate is stably above 90%, and the hourly production capacity of a single unit can reach several tons to tens of tons, perfectly meeting the needs of large-scale production.

The efficient operation of the rotary drum granulation production line relies on the precise coordination of the rotary drum granulator with other equipment. The pre-treated raw materials are uniformly mixed by the batching and mixing system and then directly fed into the rotary drum granulator, while water or binders are precisely added through a spraying device; after granulation, the granular materials directly enter subsequent equipment such as dryers, coolers, and screening machines, forming a complete closed-loop process of “batching – granulation – post-processing.”

Whether producing pure organic fertilizer or organic-inorganic compound fertilizer, the rotary drum granulation production line can achieve diversified output with the flexible adaptability of the rotary drum granulator. It not only lowers the operational threshold for large-scale organic fertilizer production but also ensures the stability of finished product quality.

organic fertilizer equipment

From Experience-Based to Technology-Driven: How Fertilizer Machinery Reshapes Modern Agriculture?

2026-01-09 by organic fertilizer production line

“A crop’s growth depends entirely on fertilizer,” goes the saying. Fertilizer is the “nutritional meal” for crops, and fertilizer machinery is the “precise dispenser” and “efficient deliveryman” of this meal. From traditional manual fertilization to today’s intelligent fertilizer blending and precision fertilization, the iterative upgrades of fertilizer machinery have not only solved the long-standing problems of “difficult and uneven fertilization,” but also propelled agricultural production towards cost-effectiveness, efficiency, and green sustainability. Today, we’ll unveil the mystery of fertilizer machinery and see how these “agricultural marvels” are changing our planting methods.

To understand fertilizer machinery, we must first understand its core mission: to ensure fertilizer is used effectively. In traditional planting, farmers often rely on experience to fertilize, either “over-fertilizing for high yields,” leading to fertilizer waste and soil compaction, or “under-fertilizing for fear of reduced yields,” impacting crop growth. Fertilizer machinery, through standardized and precise operations, perfectly solves this problem. Its family of models comprises many members, each with its own specific “job responsibilities.” In the fertilizer production stage, these “transformation masters” are responsible for converting various raw materials into qualified fertilizers. Taking organic fertilizer production as an example, the compost turner is an indispensable core piece of equipment. Through rotating blades or spiral blades, it continuously turns and tosses the fermenting materials, reducing moisture, promoting the growth of beneficial microorganisms, and ensuring more uniform decomposition, transforming polluting livestock manure and crop straw into loose, fertile organic fertilizer. The granulator, like a “shaping artist,” processes powdered fertilizer into granules through rotating discs and extrusion, facilitating storage and transportation, controlling nutrient release rates, and improving fertilizer efficiency.

In the field application stage, the “distribution experts” showcase their skills. The most common fertilizer spreader has long since moved beyond the extensive “spread as you go” approach. Modern solid fertilizer spreaders, through precise transmission systems and spreading mechanisms, can evenly distribute granular fertilizer in the field, with uniformity errors controlled within ±5%. For complex terrains such as mountains and hills, tracked mobile fertigation machines are particularly adept at maneuvering. They can easily navigate steep orchards and scattered plots, integrating irrigation and fertilization. The work time for 10 acres has been reduced from the traditional 3 people per day to just 2 hours, significantly lowering labor costs.

In recent years, with the development of smart agriculture, fertilizer machinery has also undergone an “intelligent upgrade,” giving rise to the “smart brain”—the intelligent fertilizer blender—that can “tailor-make” a nutritional meal for the land. At the intelligent fertilizer blending station in Hangjin Banner, Inner Mongolia, farmers only need to input the plot coordinates on the terminal to check the nitrogen, phosphorus, and potassium content of the soil. After selecting the crop variety and target yield, the system automatically generates a personalized fertilizer blending plan. The blender then precisely mixes the raw materials to produce a “custom-made” fertilizer. This model completely changes the traditional practice of “using the same fertilizer for everything.” Calculations show that using customized fertilizer can save 60-70 yuan per acre in fertilizer costs, reduce fertilizer application by 20 kg, and increase yield by about 30 kg per acre, truly achieving “supplementing what is lacking.” Beyond precision fertilizer application, variable-rate fertilization technology takes “precision” to the extreme. Intelligent fertilizer applicators equipped with BeiDou navigation and soil sensors can monitor real-time differences in soil nutrients and automatically adjust the amount of fertilizer applied while moving, ensuring every inch of the field receives the appropriate fertilizer supply. Data shows that the number of intelligent fertilizer applicators in my country has exceeded 42,000 units. In major grain-producing areas such as Heilongjiang and Henan, the coverage rate of intelligent fertilization equipment has exceeded 40%, and fertilizer utilization is 2%-3% higher than traditional fertilization.

The advancement of fertilizer machinery not only benefits farmers but also contributes to environmental protection. Problems such as groundwater pollution and soil degradation caused by excessive fertilization in the past have been effectively alleviated with the widespread adoption of precision fertilization machinery. For example, mobile fertigation machines, by precisely controlling the water-fertilizer ratio, can increase water resource utilization by 30%-60% and fertilizer utilization by 25%-40%, reducing waste and preventing soil compaction and salinization. Meanwhile, organic fertilizer production machinery promotes the resource utilization of livestock and poultry breeding waste, turning “waste” into “fertilizer” and forming an agricultural ecological cycle.

From simple mechanized operations to intelligent and precise control, the development of fertilizer machinery is a microcosm of the transformation and upgrading of modern agriculture. These “agricultural marvels” not only liberate farmers from heavy physical labor but also achieve the goals of “reducing fertilizer use and increasing efficiency, and promoting green development” through technological advancements. In the future, with continuous technological innovation, fertilizer machinery will develop towards greater intelligence, efficiency, and environmental friendliness, injecting continuous momentum into ensuring food security and promoting high-quality agricultural development.

Manufacturing Precision: From Factory to Field

The “agricultural marvels” that enable precision farming in the field—like intelligent spreaders and variable-rate applicators—are supplied by a sophisticated industrial manufacturing sector. The efficiency and precision of field application are entirely dependent on the quality and consistency of the fertilizer products themselves, which are produced in dedicated facilities using advanced professional fertilizer manufacturing equipment.

An organic fertilizer factory relies on a complete organic fertilizer production line, which begins with processing raw compost using a windrow composting machine and proceeds through granulation. Similarly, a comprehensive npk fertilizer production line encompasses the entire npk fertilizer production process. This process starts with precise formulation using an npk blending machine or npk bulk blending machine, followed by shaping the mixture using a fertilizer granulator. Granulation technology options include a disc granulation production line with a disc granulator for shaping, or a roller press granulator production line for dry compaction. The collective cost of this fertilizer manufacturing plant equipment directly influences both the organic fertilizer machinery price and the final NPK fertilizer production price. These integrated systems are what allow modern agriculture to have access to the diverse, high-quality fertilizers needed for both broad-acre and precision application.Therefore, the revolution in field application is underpinned by an equally significant revolution in manufacturing, where advanced production lines ensure a reliable supply of the tailored nutrients that smart farming equipment depends on.

Tags:

professional fertilizer manufacturing equipment

organic fertilizer equipment

Highly Efficient Slow-Release! 15T/Hour Sulfur-Coated Urea Production Line

2026-01-09 by organic fertilizer production line

The sulfur-coated urea production line focuses on the slow-release modification needs of conventional urea. Through a closed-loop process of “urea pretreatment – melt sulfur coating – cooling and solidification – finished product grading,” it achieves large-scale production of 15 tons/hour of sulfur-coated urea. The finished granules use urea as the core and sulfur as the slow-release coating layer, combining the advantages of long-term nutrient release and environmental protection and energy saving. It is suitable for large-scale planting scenarios such as grain crops and cash crops, significantly improving fertilizer utilization.

Production Line Configuration and Core Details

I. Urea Pretreatment Unit: Laying the Foundation for Sulfur Coating

(I) Raw Material Storage and Quantitative Feeding

Urea Raw Material Silo: Equipped with two 50m³ conical raw material silos (total volume 100m³), made of carbon steel with an anti-corrosion coating. The silo cone angle is 65°, and a vibrator and star-shaped unloader are installed at the bottom to prevent urea granule bridging and blockage. The raw material silo is equipped with a pulse dust collector at the top to collect feed dust. The dust emission concentration is ≤10mg/m³, meeting environmental protection standards.

Precision Feeding System: Two frequency-controlled belt feeders (model DTⅡ-500) are used, each with a feeding capacity of 7.5-8 tons/hour. Combined operation meets the production capacity requirement of 15 tons/hour. The feeders are equipped with weight sensors to provide real-time feedback on the feed amount. The speed is adjusted via a PLC system, with a batching error ≤±0.5%.

(II) Urea Screening and Preheating

Grading and Screening Machine: One Φ1.8×6.0 meter drum screen is used, employing a single-layer screen (pore size 2.5-4.5mm) to screen out uniformly sized urea particles (removing <2.5mm fragments and >4.5mm large pieces), ensuring uniform sulfur coating. Non-conforming particles are conveyed to a crusher via a return conveyor belt for crushing and recirculation, achieving a material utilization rate of 99% and a screening efficiency of 18 tons/hour.

Low-temperature preheater: A Φ1.5×12 meter drum preheater is used, employing indirect steam heating to raise the temperature of urea particles from room temperature to 40-50℃. Preheating reduces the surface tension of the urea particles, facilitating the adhesion of the sulfur coating layer, while preventing rapid solidification of sulfur due to low-temperature urea, which would affect the continuity of the coating. The preheater is equipped with a temperature sensor, ensuring precise temperature control with an error ≤±2℃.

II. Core Sulfur Coating Unit: Key to Slow-Release Layer Formation

(I) Sulfur Melting System

Melting Tanks: Three 10m³ stainless steel melting tanks are configured (2 in use, 1 as standby), using electric heating + circulating heat transfer oil to heat solid sulfur (particle size ≤5mm) to 125-135℃, melting it into liquid sulfur (viscosity ≤0.02Pa・s). The melting tank is equipped with a level sensor and an automatic replenishment device to maintain a stable liquid level. A single tank has a melting capacity of 6 tons/hour, meeting coating requirements.

Sulfur transfer pumps: Three gear-type insulated transfer pumps (temperature resistance ≥150℃) are used to pressurize and transfer liquid sulfur to the coating machine. The transfer pressure is controlled at 0.3-0.5MPa, and the flow rate is adjustable from 300-500kg/hour (sulfur addition accounts for 8%-12% of the total urea content, adapting to different slow-release cycle requirements). The transfer pipeline adopts a double-layer insulation design, with the outer layer wrapped in rock wool to prevent sulfur from cooling, solidifying, and clogging the pipeline.

(II) High-efficiency coating machine

Core equipment selection: Two Φ2.2×8.0 meter roller-type coating machines (7.5 tons/hour per machine) operate in parallel, with a total capacity of 15 tons/hour. The inner wall of the coating machine’s drum is lined with high-temperature and wear-resistant plates, and a spiral layout with lifting plates drives the material in a “tumbling-spraying-rolling” motion, ensuring that each urea granule is evenly contacted with liquid sulfur.

Coating process details: Liquid sulfur is evenly sprayed onto the surface of the urea granules inside the drum through atomizing nozzles (0.8mm orifice diameter), with an atomization pressure of 0.4MPa, forming a uniform sulfur film layer with a thickness of 0.1-0.3mm. The coating machine is equipped with a variable frequency speed control system, allowing the drum speed to be adjusted within the range of 8-15 r/min, controlling the material residence time to 3-5 minutes to ensure a dense, gap-free coating layer.

Auxiliary coating optimization: Depending on requirements, 0.5%-1% paraffin wax or asphalt can be added as a sealant, sprayed synchronously with the sulfur through an independent atomization system to fill the pores in the sulfur film layer, further enhancing the slow-release effect and extending the nutrient release period to 3-6 months.

III. Post-processing and Curing Unit: Ensuring Finished Product Quality

(I) Cooling and Curing

Counter-flow Cooler: Equipped with two Φ1.8×15 meter drum coolers (each with a processing capacity of 8 tons/hour), using counter-flow cooling with ambient temperature air to rapidly reduce the temperature of the coated particles from 100-110℃ to below 30℃. The cooler has a built-in air guide device to enhance heat exchange efficiency. The cooling time is controlled within 10 minutes to ensure complete curing of the sulfur coating layer, achieving a hardness of over 2.0MPa and preventing damage.

Cooling Air Treatment: A small amount of sulfur dust carried by the cooling air is collected by a pulse dust collector with a collection efficiency of 99.5%, avoiding environmental pollution. The collected sulfur dust can be recycled back to the melting tank for reuse.

(II) Grading and Anti-caking Treatment

Finished Product Screening: Two Φ1.5×4.0 meter vibrating screens are used, employing a double-layer screen design. The upper screen (5.0mm aperture) separates oversized agglomerated particles, while the lower screen (2.0mm aperture) screens qualified finished products, achieving a qualified particle pass rate of 98%. Unqualified particles are crushed and returned to the pretreatment stage, resulting in a material utilization rate of 99%.

Anti-caking Spraying: A small spraying device is added after screening to spray 0.1%-0.2% of an anti-caking agent (such as talc suspension) onto the surface of the finished particles. Through natural mixing during the belt conveyor process, the agent adheres evenly to the particle surface, preventing agglomeration during storage.

IV. Finished Product Storage and Packaging Unit: High-Efficiency Output

Finished Product Warehouse: Equipped with 3 x 100m³ finished product warehouses (total volume 300m³), featuring a sealed design and equipped with dehumidification and ventilation devices to maintain relative humidity ≤60% and prevent finished products from absorbing moisture. A quantitative unloading device is installed at the bottom of the warehouse for continuous and stable discharge.

Automated Packaging: Utilizes 4 dual-station automatic packaging scales (120 bags/hour per scale), supporting rapid switching between 25kg and 50kg specifications, with a measurement error ≤±0.2kg. The packaging machine is equipped with a dust cover and automatic sewing device to reduce dust emissions. Packaged finished products are transferred to the finished product stacking area via belt conveyor. The entire process is automated, minimizing manual intervention.

V. Environmental Protection and Intelligent Control Unit: Stable and Environmentally Friendly Operation

(I) Environmental Treatment System

Waste Gas Treatment: The small amount of sulfur vapor generated by the melting tank and coating machine is recovered by a condensation recovery device. Uncondensed waste gas is purified by an activated carbon adsorption tower before being discharged. The waste gas emission concentration complies with the “Integrated Emission Standard for Air Pollutants”. Wastewater Treatment: Wastewater from the production line cleaning process is treated in an oil separator and sedimentation tank before being recycled for equipment cleaning, achieving zero wastewater discharge.

(II) Intelligent Control System: An integrated PLC central control system with a touchscreen interface monitors the operating parameters of each piece of equipment in real time (sulfur melting temperature, coating machine speed, cooling temperature, feed rate, etc.), supporting automatic fault alarms and data recording (storage period ≥ 90 days). The system supports remote monitoring and operation, facilitating real-time monitoring of production status by management personnel.

Key equipment (melting tank, coating machine, cooler) is equipped with safety interlock devices, such as automatic power-off for overheating of the melting tank and automatic shutdown for overload of the coating machine, ensuring production safety.

Core Advantages and Application Value of the Production Line: High and Stable Production Capacity: The dual-machine parallel configuration achieves an hourly output of 15 tons and an annual capacity of 120,000 tons (calculated based on 300 days of operation per year and 8 hours per day), meeting the needs of large-scale production. Excellent slow-release effect: The dense and uniform sulfur coating allows for flexible adjustment of the nutrient release cycle (3-6 months), increasing fertilizer utilization by 30%-40% compared to conventional urea, while reducing nutrient loss and environmental pollution.

Environmentally friendly and energy-saving: A fully sealed design and dust recovery system result in low pollutant emissions; the preheater and melting tank utilize energy-saving heating technology, reducing energy consumption by 10% compared to conventional production lines.

Enabling Enhanced-Efficiency Fertilizers Through Specialized Production

This sulfur-coated urea production line represents a highly specialized segment within the broader fertilizer manufacturing industry. It focuses on creating a value-added, controlled-release product from a single nutrient source, demonstrating the sophistication possible with modern npk fertilizer production technology.

While this line produces a specialized single-nutrient product, it shares its industrial ecosystem with the equipment used for the manufacturing of npk fertilizer. The production of traditional compound fertilizers often relies on a complete npk fertilizer manufacturing process that begins with precise blending using an npk blending machine or a bulk blending fertilizer machine. The blended mixture is then shaped using an npk fertilizer granulator machine employing advanced npk granulation machine technology as part of a suite of npk fertilizer granulator machine equipment. The scale and efficiency of such integrated systems determine a plant’s overall NPK compound fertilizer production capacity. Therefore, a sulfur-coating line is a complementary technology, adding a specific functionality that works alongside, rather than replaces, conventional bulk blending and granulation systems.Ultimately, the ability to offer both conventional NPK blends and advanced coated products allows manufacturers to serve a wider market, from basic nutrient supplementation to precision, efficiency-focused agriculture.

We warmly welcome people from all walks of life to visit, guide, and discuss business with us, and work together to create a new future for green agricultural development!

organic fertilizer equipment

Why does wet granulation dominate the production of high-quality organic fertilizers?

2026-01-08 by organic fertilizer production line

In the field of high-quality organic fertilizer production, wet granulation has become the dominant choice due to its precise adaptation to raw material characteristics and stable assurance of finished product quality. Compared to dry granulation, it effectively addresses the core needs of organic fertilizer raw materials, which are complex and require a balance between nutrient retention and molding effect. This is the key to its dominant position.

Organic fertilizer raw materials are mostly animal manure and fermented crop residues, with significant fluctuations in moisture content and composition. In organic fertilizer production lines, wet granulation can precisely control moisture to create suitable viscosity in the raw materials, allowing for efficient molding without excessive binders. Both rotary drum granulators and disc granulators operate based on this principle. This reduces costs and avoids the impact of external additives on the purity of organic fertilizers, ensuring the natural safety of the product.

High-quality organic fertilizers require uniform particle size, moderate strength, and good water solubility. Wet granulation, through a continuous process of mixing, crushing, and granulation, ensures thorough mixing of raw materials and even distribution of nutrients; the formed granules have a dense structure, making them easy to store and transport without breaking; and the appropriate moisture content also improves the water solubility of the granules, accelerating nutrient release and better meeting the absorption needs of crops.

From a production feasibility perspective, wet granulation technology is mature and suitable for large-scale organic fertilizer production lines. Wet granulation lines composed of rotary drum granulators and disc granulators can adapt to different raw materials by adjusting moisture and rotation speed, offering strong flexibility; and the granulation process produces less dust, and when combined with subsequent drying and screening steps, it can achieve clean production, meeting environmental protection requirements.

organic fertilizer equipment

Large wheel compost turning machine: The high-efficiency engine of organic fertilizer production lines

2026-01-08 by organic fertilizer production line

In modern organic fertilizer production, a complete production line is transforming traditional composting with its systematic operation. Each link in this line has its specific function, and the large wheel compost turning machine, with its unique working method, is a crucial guarantee for the efficient operation of the entire system.

In open windrow fermentation fields, the large wheel compost turning machine demonstrates excellent adaptability. Its unique large-diameter turning discs can penetrate deep into the material, achieving thorough turning and mixing. Compared to traditional equipment, it has a larger processing capacity and more uniform turning, creating ideal conditions for aerobic fermentation.

Once the initially composted material enters the processing area, the new type organic fertilizer granulator begins to play a key role. Through unique molding technology, it transforms powdery organic raw materials into uniform and plump granules. This transformation not only improves the marketability of the product but also solves the dust problem during organic fertilizer application, facilitating subsequent mechanized fertilization.

From the raw material processing by the large wheel compost turning machine to the finished product forming by the new type organic fertilizer granulator, the entire organic fertilizer production line demonstrates the systematic advantages of modern agricultural equipment. Each link is closely connected, jointly constructing an efficient conversion channel from organic waste to high-quality fertilizer.

This complete organic fertilizer production line not only improves production efficiency but also represents a modern direction for resource recycling. It transforms various organic wastes into valuable resources that nourish the land through systematic treatment, playing an increasingly important role in sustainable agricultural development.

organic fertilizer equipment

Fertilizer granules compaction technology: The core optimization engine of bio-organic fertilizer production lines

2026-01-08 by organic fertilizer production line

In bio-organic fertilizer production lines, fertilizer granules compaction technology is not merely a single granulation step, but a core optimization process that runs through the entire process from raw material processing to finished product. Its precise integration with various bio-organic fertilizer equipment directly determines the efficiency, quality, and environmental performance of the production line, making it a critical technological support for bio-organic fertilizer production.

Adaptation in the pretreatment stage is fundamental to the successful implementation of the process. Fermented organic fertilizer raw materials need to be processed by crushing and screening equipment. The requirements of the fertilizer granules compaction technology regarding raw material particle size and moisture content drive the precise control of the pretreatment equipment—ensuring that the raw materials are refined to a particle size suitable for extrusion, and the moisture content is controlled within the optimal range of 30%-40%, avoiding problems such as roller sticking and uneven molding.

In the core granulation stage, this technology works efficiently with the fertilizer compaction machine. The fertilizer compaction machine receives the pre-treated raw materials and completes the molding process by setting parameters such as extrusion pressure and roller speed. Compared with other processes, it does not require the addition of extra binders, ensuring particle hardness and molding rate while maximizing the retention of nutrients in the raw materials. The resulting granules are also better suited for subsequent cooling and screening equipment.

In subsequent stages, the advantages of the process become even more apparent. The extruded granules have high uniformity, which improves the heat exchange efficiency of the cooling equipment, reduces the sorting load of the screening equipment, and ensures the smooth operation of the production line.

organic fertilizer equipment

Efficient operation of bio-organic fertilizer equipment: The crucial role of the fertilizer mixer machine

2026-01-08 by organic fertilizer production line

The efficient operation of a complete set of bio-organic fertilizer equipment is key to producing high-quality organic fertilizer. The fertilizer mixer machine, as the core equipment connecting raw material pretreatment and subsequent processing, directly determines the efficiency of the entire system and the quality of the product. It is an indispensable basic guarantee in all stages of production.

In the raw material pretreatment stage, the fertilizer mixer machine undertakes the core mixing task. Bio-organic fertilizer raw materials have complex components, requiring the precise mixing of fermented materials, beneficial microbial agents, and conditioning additives. The mixer machine ensures thorough contact between various raw materials through stable mixing, guaranteeing the even dispersion of microbial agents and laying the foundation for subsequent complete fermentation.

Improving the adaptability of the fertilizer mixer machine can further optimize the overall system efficiency. A high-quality mixer can flexibly adjust the rotation speed and duration according to the moisture content and particle size of the raw materials, preventing material clumping or excessive pulverization, and producing uniformly conditioned materials. This directly improves the operating efficiency of subsequent granulation and drying equipment.

Therefore, the fertilizer mixer machine is not an isolated link in the bio-organic fertilizer equipment system, but a fundamental core component that ensures continuous production and improves product quality. Paying attention to its selection and operational control is essential for the complete set of equipment to fully utilize its potential and consistently produce high-quality bio-organic fertilizer.

organic fertilizer equipment

Drying and cooling: The core of quality assurance in fertilizer granule post-processing

2026-01-08 by organic fertilizer production line

Fertilizer granules after granulation often suffer from problems such as high moisture content, high temperature, and low strength, making them unsuitable for direct storage and transportation. In the post-processing stage of organic fertilizer production lines, the coordinated operation of dryers and coolers is crucial to solving these problems. They form a complete chain of “dehydration and shaping – cooling and strengthening,” directly determining the final quality of the fertilizer granules.

The drum fertilizer dryer undertakes the core task of “dehydration and shaping.” Granules fresh from the fertilizer granulator usually have a moisture content of 20%-30%, and need to be sent to the dryer to complete the drying process through a hot air circulation system: high-temperature hot air (60-80℃, adapted to the characteristics of organic fertilizer) fully contacts the granules, and with the help of internal baffles, ensures that each granule is evenly dehydrated, ultimately controlling the moisture content within the safe range of 12%-14%.

The d rum fertilizer c ooler connects the critical “cooling and strengthening” stage. The temperature of the dried granules can reach 60-80℃. If directly piled up, they are prone to re-moisturizing and clumping, and may even break due to thermal expansion and contraction. The cooler uses the principle of cold air heat exchange to quickly cool the high-temperature granules to near ambient temperature (temperature difference ≤5℃), and at the same time further tightens the granule structure during the cooling process, significantly improving the strength and hardness of the granules.

The core advantage of their combined operation lies in “process+quality complementarity.” During operation, it is necessary to match the capacities of the two machines, adjust the drying temperature and cooling air speed according to the granule size and raw material characteristics, and regularly clean the accumulated material inside the equipment to ensure smooth ventilation. As the “golden partners” in the post-processing of organic fertilizer production lines, their coordinated operation can increase the qualified rate of fertilizer granules to over 95%.

organic fertilizer equipment

Core Cooling Equipment for Multiple Industries: Rotary Drum Cooler

2026-01-08 by organic fertilizer production line

In numerous industrial sectors such as cement calcination, chemical synthesis, metallurgical smelting, and building materials processing, cooling high-temperature materials is a crucial step in ensuring smooth subsequent production processes. The rotary drum cooler (also known as a gyratory cooler), as a core piece of equipment specifically designed for cooling high-temperature materials, has become an indispensable cooling tool in industrial production due to its efficient heat exchange capacity, stable operating performance, and wide adaptability. Through scientific heat exchange principles, it precisely cools high-temperature materials to a suitable temperature for storage, transportation, or further processing, providing solid support for enterprises to improve production efficiency and ensure product quality.

The stable and efficient operation of the rotary drum cooler stems from its scientifically designed structure, with each core component working in tandem to form a complete cooling system. The drum itself, the core of the equipment, houses a cooling device and lifting plates. This design is key to improving cooling efficiency—the lifting plates repeatedly lift and drop the material as the drum rotates, significantly increasing the contact area between the material and the cooling medium. The transmission device, composed of a motor, reducer, gears, and rollers, provides stable rotational power to the drum, ensuring uniform drum operation. The inlet and outlet respectively handle the entry of high-temperature materials and the discharge of cooled materials, ensuring smooth material flow. The cooling medium supply system provides air, water, or refrigerant, providing the necessary conditions for heat exchange. The support device uses a combination of rollers and support wheels to firmly support the drum, reducing frictional losses during rotation and ensuring stable operation. The sealing device effectively prevents leakage of cooling medium and materials, avoiding resource waste and improving cooling efficiency. Furthermore, the control system ensures a stable and efficient cooling process through precise control of parameters such as temperature and speed.

The working principle of the drum cooler is based on efficient heat exchange, with a clear process and rigorous logic. When high-temperature materials enter the drum through the inlet, the transmission device drives the drum to rotate slowly. During rotation, the lifting plates inside the drum continuously lift the material to a certain height before scattering it, creating a uniform curtain of material in a tumbling state. Simultaneously, the cooling medium supply system continuously inputs cooling medium into the drum, allowing the material and cooling medium to come into full contact and undergo direct heat exchange—the heat of the material is rapidly carried away by the cooling medium, thus lowering the temperature. The cooled material is discharged from the outlet under the driving force of the rotating drum; the cooling medium (such as hot air) that has absorbed heat is discharged through the exhaust port. The entire process is continuous and efficient, meeting the cooling needs of large-scale high-temperature materials.

The unique structure and working principle of the drum cooler give it many significant advantages, making it adaptable to the complex needs of multiple industries. High cooling efficiency is its core competitiveness. Through direct heat exchange and the assistance of the lifting plates, the material is cooled evenly and quickly, while also having a large throughput, easily handling the cooling of large batches of high-temperature materials. It is highly adaptable, capable of handling various materials of different sizes and shapes, whether it be cement clinker, metallurgical slag, or chemical synthetic materials, achieving stable cooling. The equipment has a relatively simple structure, a reasonable layout of core components, is easy to operate, and has low maintenance costs, significantly reducing the operational and maintenance burden on enterprises. Compared with other cooling methods, the drum cooler consumes less energy, especially when processing large batches of materials, where the energy-saving effect is more significant. Furthermore, the equipment is highly flexible in operation; by adjusting parameters such as drum speed and cooling medium flow rate, the degree of cooling can be precisely controlled to adapt to the cooling needs of different materials. More importantly, the discharged heat medium has the potential for recycling and can be used to preheat other materials or for drying operations, further improving energy efficiency and aligning with the concept of green production.

From clinker cooling in the cement industry to slag cooling in the metallurgical industry, from synthetic material cooling in the chemical industry to finished product cooling in the building materials industry, the drum cooler, with its core advantages of high efficiency, stability, and energy saving, provides strong support for the smooth operation of production processes in various industries. Against the backdrop of industrial production transforming towards higher efficiency and greener practices, this multi-industry-compatible cooling core equipment not only improves enterprise production efficiency but also helps enterprises achieve energy conservation and emission reduction goals, becoming one of the important pieces of equipment driving high-quality industrial development.

Integrating Cooling into Modern Fertilizer Manufacturing

The rotary drum cooler exemplifies the importance of specialized thermal management in continuous industrial processes. Its role is equally critical within the fertilizer industry, where precise temperature control is essential for producing high-quality, stable products.

Specifically, in a complete npk fertilizer production line, the cooler is a vital piece of professional fertilizer manufacturing equipment. It is typically positioned after the granulation and drying stages within the npk fertilizer production process. For example, following disc granulation production line shaping by a disc granulator for shaping or compaction in a roller press granulator production line, the hot granules must be rapidly cooled to set their structure and prevent caking. This cooling stage works in synergy with upstream equipment like the npk blending machine and the fertilizer granulator. Similarly, in an organic fertilizer production line that begins with a windrow composting machine, a cooler ensures the stability of the final granulated product from a bio organic fertilizer production line. Thus, the drum cooler is an indispensable link that bridges high-temperature processing with final product packaging and storage.

Ultimately, by ensuring granules are cooled efficiently and uniformly, this equipment protects product quality and enables the reliable, large-scale output that defines modern fertilizer manufacturing.