Practical methods for reducing raw material waste in ring die granulators

fertilizer granulator Sep 29, 2025

In fertilizer production, raw material waste in ring die granulators primarily stems from substandard pellets and die blockage. Targeted measures can increase raw material utilization by 5%-8%.

First, substandard pellets are recycled. After screening in the pelletizer, broken and large particles are collected and crushed to the required particle size (consistent with new raw material) using a dedicated fertilizer crusher. These particles are then mixed with new raw material at a ratio of 1:5 for re-pelletization. Care should be taken to control the moisture content during mixing. If the moisture content of the recycled material exceeds 18%, it should be air-dried to 14%-16% before mixing to prevent moisture absorption and impact on the overall pelletizing effect. Furthermore, the recycled material mix ratio should not exceed 20% to prevent it from affecting the strength of the new pellets.

Secondly, reduce ring die blockage losses. Before each shutdown, empty the pelletizing chamber of any remaining raw material. Then, introduce a small amount of talcum powder (5-8 kg per ton of raw material). Run the ring die granulator at no load for 5 minutes to allow the talcum powder to adhere to the inner wall of the ring die, forming a protective film to prevent residual raw material from solidifying and clogging. During daily production, check the ring die holes for blockage every four hours. If a small blockage is detected, clear it with a special needle (0.5 mm smaller in diameter than the die hole) to prevent further blockage and material waste.

In addition, polish the edges of the ring die holes every 100 hours to remove burrs and minimize material loss caused by material being stuck in the holes. A magnetic separator should be installed at the pelletizer feed inlet to remove metallic impurities from the raw material, preventing them from damaging the ring die and causing pelletizing problems, further reducing material waste.

Practical optimization directions for energy saving and consumption reduction in fertilizer coating machines

fertilizer granulator Sep 28, 2025

Currently, fertilizer companies are focusing on controlling production costs. Through proper optimization, coating machines can achieve energy savings and consumption reduction, helping companies lower operating costs.

First, energy saving in the heating system. Some coating machines utilize a waste heat recovery design. A heat exchanger is installed at the heat sealing channel outlet to collect the exhaust hot air and preheat the incoming cold air, reducing heat consumption in the heating tubes. This design reduces heating energy consumption and is particularly suitable for companies with continuous production, with significant energy savings over the long term. Furthermore, variable frequency heating tubes are used, which automatically adjust power based on particle flow rate. For example, when production capacity drops to 50%, heating power is also reduced, avoiding high-temperature operation and wasting energy during idle periods.

Second, motor frequency conversion modification. The equipment’s conveyor belts, film reels, and other motors utilize variable frequency control. During production, the PLC system is linked to a particle flow sensor to automatically adjust motor speed based on particle flow rate. Compared to traditional fixed-speed motors, variable-frequency motors can save 10%-12% of electricity, operate more smoothly, and reduce noise by 5-10 decibels, improving the workshop working environment.

Third, film utilization is improved. Some coating machines support adaptive film width adjustment. When changing films of different widths, manual adjustment of the film guide mechanism is eliminated, and the optimal wrapping width is automatically matched. This reduces material loss during the commissioning process. Long-term use can significantly reduce raw material procurement costs, supporting enterprises in reducing costs and increasing efficiency.

Energy-saving optimization of drum fertilizer coolers: Practical methods to reduce operating costs

fertilizer granulator Sep 26, 2025

With the general trend of reducing costs and increasing efficiency in industrial production, energy-saving optimization of drum fertilizer coolers has become a key focus for many companies. In fact, without major equipment modifications, adjusting operating parameters and optimizing system configuration can effectively reduce energy consumption and operating costs.

First, optimize cooling medium recycling. A circulation device can be added to the cooling system. For example, warm water discharged from the jacket can be directed to a cooling tower for cooling and then recirculated back to the jacket for reuse, reducing fresh water usage. For forced air cooling, the warm exhaust air can be cooled through a heat exchanger before being re-circulated into the drum as cooling air, reducing fan energy consumption.

Second, adjust drum fertilizer cooler operating parameters to suit production needs. Parameters can be dynamically adjusted based on the material’s real-time temperature and processing volume. For example, if the material feed temperature is lower than expected, the drum fertilizer cooler speed can be appropriately reduced to extend the material’s residence time and reduce the cooling medium flow rate to avoid overcooling. When processing volume decreases, the drive motor speed can be reduced to reduce motor energy consumption.

Third, add insulation to reduce heat loss. If the drum shell is exposed to air for extended periods, it will dissipate heat into the surrounding environment, increasing the load on the cooling system and causing energy loss. Installing an insulation layer (such as rock wool or aluminum silicate fiber) between the drum shell and the jacket can reduce heat radiation from the shell. Also, insulate the pipes at the feed and discharge ports to prevent the material from absorbing ambient heat during transportation, which would increase the cooling load.

In-depth comparison of flat die granulators and other pelletizing equipment

fertilizer granulator Sep 24, 2025

Comparison of Ring Die Granulators

In terms of roller design, the rollers of flat die granulators can be enlarged arbitrarily, enhancing the bearing’s pressure-bearing capacity. However, due to the limited diameter of the ring die, the rollers of ring die granulators cannot be enlarged, resulting in a smaller bearing chamber and relatively weaker pressure-bearing capacity. Regarding the mold, flat die granulators are relatively easy to replace and less expensive; while the molds of ring die granulators are complex, difficult to replace and more expensive. Regarding equipment stability, the evenly distributed rollers of flat die granulators ensure smoother operation, while ring die granulators are prone to vibration and noise during operation.

Similarities and Differences between Disc Granulators

Disc granulators form pellets by rolling the material on a rotating disc, while flat die granulators form pellets by squeezing the material between rollers and a flat die. Regarding pellet shape, disc granulators produce irregular spherical pellets, while flat die granulators produce cylindrical pellets. In terms of production efficiency, disc granulators offer higher output but relatively lower pellet strength; flat die granulators offer moderate output but higher pellet strength. In terms of applicable materials, disc granulators are more suitable for viscous materials, while flat die granulators have a wider range of applications.

Analysis of Rotary Drum Granulators

Rotary drum granulators tumble the material in a rotating drum and spray a binder to form pellets. Their structure is relatively complex. Flat die granulators are more compact, using direct extrusion between a roller and a die to form pellets. In terms of granulation quality, rotary drum granulators produce pellets with irregular shapes and uneven sizes, while flat die granulators produce pellets with regular shapes and uniform sizes. In terms of energy consumption, rotary drum granulators consume relatively high energy due to their large size and numerous operating parts, while flat die granulators consume less energy.

Large wheel compost turners: Boosting the organic fertilizer industry’s upgrade

fertilizer granulator Sep 23, 2025

In the development of the organic fertilizer industry, large-wheel compost turners, with their superior performance, have provided a powerful impetus for industrial upgrading. They play an irreplaceable role in improving fermentation efficiency, ensuring fertilizer quality, and reducing production costs.

1.Improving fermentation efficiency and shortening cycle times

The large wheel compost turner’s efficient turning operation allows the material to fully come into contact with air, creating optimal conditions for microbial growth and reproduction. Its unique wheel design and powerful power system enable rapid cutting, spreading, and mixing of the material, allowing aerobic microorganisms to quickly activate in an aerobic environment, accelerating the decomposition and conversion of organic matter.

2.Ensuring uniform composting

Uniform composting is crucial to ensuring the quality of organic fertilizer. The large wheel compost turner evenly turns the material during operation, ensuring that all layers of the material are fully fermented. Organic fertilizer processed by the large wheel compost turner achieves uniform composting and a more balanced nutrient distribution.

3.Reduce production costs and increase profitability

From an energy-saving perspective, some large wheel compost turners utilize advanced energy-saving technologies such as variable frequency drive (VFD). These technologies automatically adjust motor speed and power based on the material’s conditions, avoiding energy waste. Regarding labor costs, large wheel compost turners are highly automated; simply setting parameters allows them to automatically complete the turning process, reducing the need for frequent manual operation and significantly lowering labor costs.

Windrow compost turner: A powerful tool for organic fertilizer production in various scenarios

fertilizer granulator Sep 17, 2025

The windrow compost turner, with its excellent adaptability, plays a vital role in a variety of organic fertilizer production scenarios, making it a valuable tool for projects of varying scales and types.

In large-scale organic fertilizer production bases, the equipment’s high efficiency and scalable processing capabilities are highly valued. These bases typically process large quantities of raw materials. A single windrow compost turner, with a processing capacity of 50-150 tons per hour and a multi-zone rotational operation mode, can meet the base’s continuous, large-scale fermentation needs. Combined with other equipment, it forms a complete production line, enabling the base to achieve industrialized production.

For large-scale farms, the equipment can process raw materials such as livestock and poultry manure and straw locally, eliminating the need for long-distance transportation and reducing costs. Its tracked design allows it to move freely across muddy farm sites, allowing for flexible fermentation operations and transforming farm waste into organic fertilizer, achieving resource recycling while reducing environmental pollution.

At municipal organic waste treatment sites, equipment is crucial for reducing and repurposing organic waste. For dispersed and complex materials like kitchen waste and landscaping waste, windrow compost turners can be used for centralized processing in open-air areas. Through turning and fermentation, they are transformed into high-quality organic fertilizer, contributing to urban ecological and environmental improvements.

In sludge treatment projects, qualified sludge is turned by the equipment to stabilize its properties, eliminate odors and pathogens, and transform it into safe organic fertilizer. This achieves harmless and resourceful sludge treatment, expanding sludge disposal options.

Organic fertilizer production lines contribute to green agricultural development

fertilizer granulator Sep 16, 2025

With the deepening promotion of the concept of green agricultural development, demand for organic fertilizer, an environmentally friendly and efficient type of fertilizer, is growing. By reusing resources such as agricultural waste and livestock manure, organic fertilizer production lines not only reduce environmental pollution but also provide high-quality fertilizer for agricultural production, becoming a key force in promoting green agricultural development.

The core processes of an organic fertilizer production line include raw material fermentation, crushing, mixing, granulation, drying, and screening. The performance of key equipment in these processes directly determines the quality and production efficiency of organic fertilizer. Fertilizer crushers are responsible for breaking fermented raw materials into uniform granules, laying the foundation for subsequent mixing and granulation. Fertilizer mixers ensure uniform mixing of various raw materials, ensuring a balanced nutritional profile in the organic fertilizer. Fertilizer granulators transform the mixed raw materials into granular organic fertilizer that meets specific requirements for storage and application.

Fertilizer dryers and coolers also play an important role in organic fertilizer production. The dryer removes excess moisture from the granulated organic fertilizer, preventing it from clumping and deteriorating. The cooler quickly reduces the temperature of the dried organic fertilizer, facilitating subsequent screening and packaging. These devices work together to form a complete organic fertilizer production process, ensuring efficient and stable production.

The promotion and application of organic fertilizer production lines not only recycles agricultural waste and reduces the damage to the soil and environment caused by chemical fertilizer use, but also improves the quality of agricultural products and contributes to sustainable agricultural development.

How to choose a large wheel compost turning machine model?

fertilizer granulator Sep 13, 2025

When purchasing a large wheel compost turning machine, the model selection is directly related to production efficiency and cost control. Our LP series models need to be accurately selected in combination with the company’s production capacity and needs.

LP-10m, as a basic model, is favored by small and medium-sized organic fertilizer companies. Its main motor power is 55KW, equipped with 1.5KW×4 small car mobile motors, 1.5KW×2 (4) large car mobile motors and 4KW hydraulic pump motors. The power configuration is balanced and can process 100-150 tons of materials per hour, with a daily processing capacity of 500-800 tons. It is suitable for organic fertilizer bases with an annual output of 10,000-50,000 tons, can meet daily production needs, and has moderate energy consumption and floor space, and relatively low investment costs.

For companies with an annual output of 50,000-100,000 tons, LP-12m and LP-15m are better choices. These two models offer improved power performance based on the LP-10m. The main motor power can be upgraded as needed, and the mobile motor and hydraulic pump motor have also been optimized accordingly. This increases processing efficiency to 150-200 tons/hour, enabling a daily processing capacity of 800-1200 tons. This meets the continuous operation needs of medium-sized production lines while maintaining a high cost-performance ratio.

For large-scale organic fertilizer production lines with an annual output of over 100,000 tons, the LP-20m model is recommended. It features a more powerful power system, a more powerful main motor, and a more stable mobile mechanism. With a daily processing capacity of 1200-1500 tons, it can easily handle large-scale windrow fermentation. Equipped with an automated control system, it allows for multiple windrow rotations, ensuring efficient production line operation. When selecting a model, companies should consider their production capacity planning, site size, and raw material types to select the most suitable model to maximize the value of the large wheel compost turning machine.

Extending the life of a rotary drum granulator: Daily maintenance and trouble prevention

fertilizer granulator Sep 12, 2025

As core equipment in a organic fertilizer production line, a rotary drum granulator requires routine maintenance to extend its lifespan and ensure stable production. First, regularly inspect the transmission mechanism to ensure the proper operation of the motor and reducer. Lubricate the transmission components promptly to ensure smooth operation and prevent wear due to insufficient lubrication.

Maintenance of the support mechanism is also crucial. Regularly inspect the wear of the rolling and sliding bearings and replace any problems promptly to prevent bearing failures from impacting overall equipment operation. Keep the spray system clean and regularly clean the nozzles to prevent clogging that could affect humidity control accuracy, thereby ensuring pellet quality.

Furthermore, after each production run, clean the drum walls of the drum to prevent material agglomeration that could affect the next run. Regularly calibrate the equipment control system to ensure accurate monitoring and adjustment of parameters such as speed, humidity, and temperature. Proper routine maintenance ensures long-term stable operation of the rotary drum granulator, creating greater value for your business.

How to adjust the conveying capacity of the belt conveyor

fertilizer granulator Aug 19, 2025

Adjusting the conveying capacity of the belt conveyor can be achieved through the following methods:

1. Adjust the motor speed: Adjusting the motor speed is one of the common methods to change the conveying capacity of the belt conveyor. The frequency converter can accurately control the motor speed, thereby adjusting the conveying speed.

2. Adjust the drive roller diameter: Replacing the drive roller can significantly change the conveying speed, but the cost is high, the replacement process is more complicated, and professional personnel are required to operate.

3. Adjust the belt tension: By changing the tension of the belt, the friction between the belt and the drive roller is affected, thereby adjusting the conveying speed. Appropriately increasing the tension can increase the friction and speed up the conveying speed.

4. Adjust the feed rate: By adjusting the opening size of the feed hopper or the feed speed, the amount of material entering the conveyor belt can be controlled, thereby adjusting the conveying capacity. Use an adjustable roller assembly The rollers in the adjustable roller assembly can be set at an angle, and the material gathers in the middle of the conveyor belt to prevent spillage.

5. Automatic control: Use the coal inspection modules set at intervals to determine the amount of coal transported on the belt conveyor, so as to accurately control the speed of the previous belt conveyor. At the same time, use the speed sensor to collect whether the speed of the previous belt conveyor after speed regulation is accurately adjusted. In abnormal cases, use the anti-slip protection device to terminate the operation of the belt conveyor, realize the function of controlling the speed of the belt conveyor according to the amount of coal, and reasonably consume electricity and material resources.

Through the above methods, the conveying capacity of the belt conveyor can be effectively adjusted to meet the production needs of different organic fertilizer production lines.