The “Competition” between large wheel compost turners and traditional compost turning equipment

In the field of organic waste treatment, compost turning equipment is a critical tool. The emergence of large wheel compost turning machines has disrupted the traditional compost turning system, creating a fierce competition with it.

Traditional trough compost turning machines typically require the construction of fixed fermentation tanks, which not only limits the equipment’s flexibility but also takes up a significant amount of site space. For example, a small organic waste treatment project with a daily processing capacity of 10 tons would require the construction of at least two fermentation tanks, each 10 meters long and 3 meters wide. Including the spacing between the tanks and the operating space, the total area required is approximately 100 square meters.

Large wheel compost turning machines, on the other hand, have relatively low site requirements. Without the need for fixed fermentation tanks, they can operate in more open areas. To process the same 10 tons of organic waste, a large wheel compost turning machine may only require approximately 60 square meters of site space, significantly saving space.

Traditional compost turning equipment has a relatively limited turning range, typically 5-10 meters wide and 1-1.5 meters deep. Large-wheel compost turning machines, on the other hand, can reach widths of up to 30 meters and depths of 1.5-3 meters, enabling them to cover a wider area and greater depths.

Conventional equipment can have blind spots, resulting in incomplete fermentation of some materials. Large wheel compost turning machines, through symmetrical turning and a speed-adjustable, shifting trolley, achieve seamless turning, ensuring more even mixing and more complete fermentation.

How to choose a suitable drum screener machine for organic fertilizer production?

In the organic fertilizer production process, the quality of material screening directly affects the particle uniformity and application effectiveness of the finished fertilizer. Therefore, selecting an appropriate drum screener machine is crucial. Considering the material characteristics and process requirements of organic fertilizer production, the following key aspects should be considered when selecting a suitable drum screening machine.

First, focus on the equipment’s processing capacity and screening efficiency. Organic fertilizer production is often a continuous process, so the equipment must be able to match the overall production line capacity to avoid material accumulation due to slow screening speeds. Furthermore, screening efficiency must meet industry standards to ensure rapid separation of materials of varying particle sizes and minimize unscreened material residue. When selecting a drum screener machine, pay particular attention to its ability to screen wet and easily agglomerated materials. The equipment must be able to effectively handle these materials and avoid clogging of the screen openings.

Second, consider the equipment’s wear and corrosion resistance. Organic fertilizer materials may contain corrosive components or hard impurities. A high-quality drum screener machine should use wear-resistant and corrosion-resistant materials for its core components, especially the screen and drum lining. This reduces the need for routine maintenance, extends the equipment’s lifespan, and minimizes the risk of production interruptions.

Finally, the equipment’s adjustable flexibility and ease of operation must also be considered. Different batches of organic fertilizer may require different screening accuracies, and the equipment should be able to flexibly adjust parameters such as mesh size and vibration frequency to accommodate diverse production needs.

Chain crusher: An all-round aid for material crushing in multiple industries

Chain crushers are not limited to organic fertilizer production; they also play a vital role in a variety of industries, including chemicals, building materials, and mining. They are truly versatile tools for material crushing in various industries, their flexible adaptability enabling them to deliver outstanding performance in diverse production scenarios.

In the chemical industry, they can pre-process and crush various medium-hardness industrial raw materials (such as sulfur lumps and soda ash agglomerates), providing uniformly sized materials for subsequent chemical reactions or processing steps. This prevents incomplete reactions caused by uneven raw material size and improves the quality and stability of chemical products.

In the building materials sector, chain crushers offer efficient crushing of materials such as limestone and shale. They can adjust the output particle size to meet the diverse particle size requirements of building materials production, such as cement and bricks.

In the mining industry, their high adaptability is particularly evident when dealing with ores of varying hardness, allowing crushing parameters to be adjusted based on the ore’s characteristics to ensure optimal crushing results.

In addition, this chain crusher can also be used in scenarios such as agricultural fertilizer crushing. With its wide applicability, it has become an important equipment in the material crushing process of various industries.

Reducing costs and improving efficiency: Several core advantages of disc granulators

For manufacturing companies, equipment performance and cost control are crucial. Disc granulators excel in both areas, making them a powerful tool for enhancing competitiveness.

First, they offer exceptional energy efficiency. Compared to traditional granulation equipment, they consume less energy. Long-term use can save companies significant energy costs and effectively reduce production and operating costs. Second, disc granulators offer high production efficiency and enable continuous production. Depending on production needs, hourly output can range from several tons to tens of tons, meeting the production needs of companies of all sizes and helping them quickly complete production tasks.

Disc granulators offer even greater advantages in granulation quality. They produce highly uniform, strong, and resistant granules, ensuring high product quality for fertilizers, mineral powders, and chemical raw materials. Furthermore, they are easy to operate, requiring minimal training for operators to master their operation. This reduces production risks associated with complex operations. Maintenance is also relatively simple, further reducing management costs.

From pretreatment to maturity! Standard operating procedures for a windrow compost turner

To maximize the performance of a windrow compost turner, a scientific and standardized operating process must be followed. The entire process of the windrow compost turner revolves around four key steps: raw material pretreatment, windrow accumulation, turning and fermentation, and determination of maturity.

Raw material pretreatment is fundamental. Collected organic materials must first be sorted to remove impurities such as metal and plastic. Livestock and poultry manure should be air-dried to a moisture content below 65%, and straw should be pulverized to 5-10 cm in length. The raw materials should then be mixed at a carbon-to-nitrogen ratio of 25-30:1. The carbon and nitrogen content can be adjusted by adding straw or manure, ultimately achieving a moisture content of 55%-60%. At this point, the material will clump when held and fall apart upon contact, achieving optimal fermentation conditions.
Next, the pre-treated raw materials are stacked into trapezoidal stacks at the fermentation site. These stacks are typically 3-5 meters wide at the base, 1.5-2.5 meters wide at the top, and 1-1.8 meters high. The stack length can be adjusted flexibly based on the site and production volume. A 1.5-2 meter passageway is left between the stacks to facilitate equipment access and ventilation.

Turning and tossing is a key step in fermentation. After starting the windrow compost turner, the depth of the tossing mechanism is adjusted according to the height of the stack, ensuring that the tossing teeth penetrate 10-20 cm into the bottom of the material. The initial fermentation lasts 1-3 days, with the first tossing occurring when the material temperature reaches 50-60°C. The high-temperature period lasts 4-10 days. When the temperature rises to 60-70°C, the stacks are tossed every 1-2 days to kill harmful bacteria. The cooling period lasts 11-20 days. When the temperature drops to 40-50°C, the stacks are tossed every 2-3 days to promote humus formation. The entire fermentation cycle lasts 15-25 days.

Finally, the material is judged by maturity. When the temperature is close to room temperature, the color is dark brown, the texture is loose, and there is no odor or earthy smell, it is considered mature and can be sent to the next stage for processing.

Common organic fertilizer production line types and key equipment configurations

In the fertilizer production industry, different types of fertilizer production lines correspond to varying production requirements and process characteristics. Understanding common fertilizer production line types and key equipment configurations is crucial for companies to plan production and improve efficiency.

Currently, mainstream fertilizer production lines include organic fertilizer production lines, NPK fertilizer production lines, and bio-organic fertilizer production lines. Organic fertilizer production lines primarily use agricultural waste and livestock manure as raw materials, producing organic fertilizer through fermentation, crushing, and granulation. NPK fertilizer production lines focus on optimizing the ratio of nitrogen, phosphorus, and potassium to produce compound fertilizers. Bio-organic fertilizer production lines build on traditional organic fertilizer production by incorporating biological strains to enhance the bioactivity of the fertilizer.

While different production lines have different focuses on equipment configuration, they share common core equipment. The crushing stage typically requires a fertilizer crusher to ensure the raw material particle size meets subsequent processing requirements. The granulation stage utilizes fertilizer granulators, such as disc granulators and rotary drum granulators. The mixing stage relies on a fertilizer mixer to ensure uniform mixing of the raw materials. Furthermore, fertilizer conveyors, screening machines, dryers, and coolers are essential equipment, collectively forming the complete fertilizer production process.

When configuring equipment, companies should carefully select equipment specifications and models based on the production line’s capacity, raw material characteristics, and product requirements to ensure optimal compatibility across all stages and improve overall production efficiency.

Key points for daily maintenance of BB fertilizer mixers to extend equipment life

As a long-term operating equipment in fertilizer production, BB fertilizer mixers require scientific daily maintenance to effectively reduce downtime, extend their service life, and ensure stable production. Maintenance should focus on the core components of the BB fertilizer mixer, with the mixing mechanism being the key. Regularly inspect the agitator shaft and blades for wear. Deformed or damaged blades should be replaced promptly to prevent poor mixing performance. Regular lubrication of the agitator shaft bearings is also crucial to reduce friction and minimize the risk of damage.

Maintenance of the drive system, including the motor and reducer, is also crucial. Regularly monitor the motor’s temperature and noise during operation. Any abnormal heating or noise should be promptly investigated to prevent motor burnout. Reducer lubrication should be regularly replaced to ensure transmission efficiency and avoid excessive wear due to insufficient lubrication.

Maintenance of the feed and discharge systems is equally critical. After each run, check the feed and discharge ports for residual material blockages and clean them promptly to ensure smooth material flow. Also, check the seal of the discharge valve to prevent material leakage that could cause waste or pollute the production environment.

In addition, after each production, the inside of the mixing drum needs to be thoroughly cleaned to avoid residual raw materials from clumping and to prevent contamination of new raw materials during the next production. With the help of the easy-to-clean design features of the BB fertilizer mixer, the cleaning work can be completed efficiently.

How does a disc granulator create round, uniform fertilizer granules?

The roundness and uniformity of fertilizer granules directly impact the ease of application (spreading uniformity) and product competitiveness. Disc granulators, with their unique “rolling forming” principle, are key equipment for producing high-quality granules. The key lies in precisely controlling parameters to achieve the ideal shaping process within the disc.

Disc granulators do not rely on extrusion to form granules, but instead continuously roll the raw materials within a rotating disc. Initially small granules continuously absorb surrounding powder, gradually growing larger like a “snowball.” During this process, the granules rub against each other, naturally forming a rounded appearance. These granules are particularly suitable for products with high requirements for granule shape, such as organic fertilizers and biological fertilizers.

Pellet quality is determined by several parameters. The first is the disc’s inclination angle. A small angle prolongs the material’s residence time within the disc, resulting in larger particles. A large angle causes the particles to overflow quickly, resulting in smaller particles. The second is the disc’s rotational speed. Low speeds are suitable for low-viscosity raw materials, preventing powder splashing; high speeds are suitable for sticky raw materials like organic fertilizer, enhancing the rolling adsorption effect. The third is the feed rate. Maintaining a uniform feed rate prevents excessive feed from causing particle accumulation and deformation, while insufficient feed leads to uneven particle size.

Furthermore, for fertilizers such as biofertilizers that require the preservation of bacterial inoculants, disc granulators eliminate the need for high-temperature extrusion. The forming process temperature is kept below 40°C, ensuring the survival of the inoculant. The resulting rounded particles are easy to package and transport, ensuring both functionality and commercial appeal.

How does a large wheel compost turner adapt to large-scale organic fertilizer production lines?

With the large-scale development of the organic fertilizer industry, production lines are placing increasingly stringent demands on equipment adaptability. With its exceptional integration capabilities, large wheel compost turners have become core equipment for large-scale organic fertilizer production lines.

Within the production line process, they seamlessly connect pre-treatment and processing. During pre-treatment, raw materials such as livestock and poultry manure processed by a solid-liquid separator and pulverized straw from a pulverizer are piled into windrows 5-8 meters wide and 1.5-2 meters high. The large wheel compost turner slowly moves along the windrows, turning and fermenting the material. The fermented material is then conveyed by conveyor to equipment such as granulators, screens, and dryers, forming a complete production chain from pre-treatment to fermentation, enabling continuous production.

For large-scale production lines with an annual output of over 100,000 tons, the equipment rotates through multiple windrows: one receiving fresh raw material, one performing high-temperature fermentation, and one completing cool-down composting. This fixed cycle allows for a daily processing capacity of 800-1,500 tons, meeting the needs of large-scale production.

In addition, its electronic control system flexibly adjusts the turning and travel speeds, adjusting the fermentation progress based on the raw material supply and pelletizing capacity, ensuring a stable production line. Furthermore, compared to tank fermentation, it improves site utilization by over 30%, saving valuable land resources for large-scale production lines.

Common troubleshooting and solutions for double screws compost turning machines

Double screws compost turning machines operate frequently in organic fertilizer fermentation workshops. Improper operation or untimely maintenance can easily lead to problems such as uneven turning, insufficient power, and equipment jamming, impacting fermentation progress.

1. Dead corners remain after turning, and some areas remain uncomposted

The main cause is excessive clearance between the spiral blades and the sidewalls of the fermentation tank (over 10 cm), or the double screws compost turning machine is moving too fast, preventing material from being turned over the edges. To address this, adjust the position of the spiral blades to reduce the clearance to within 5 cm. Also, reduce the double screws compost turning machine’s speed to ensure that every area is thoroughly turned.

2. Motor overload and tripping, insufficient power

This is often caused by excessive moisture content (over 70%) in the raw materials, resulting in increased friction on the spiral blades due to high viscosity, or by large impurities in the raw materials that may be blocking the blades. To address this, adjust the moisture content of the raw materials to 60%-65% before clearing impurities from the fermentation tank. If the compost tank is frequently overloaded, check the tightness of the motor belt and tighten or replace it.

3. Rapid wear of spiral blades, reducing turning capacity

This is primarily due to the presence of hard impurities (such as sand and gravel) in the raw materials, or the blade material not being suitable for wear resistance. To address this, install a screen to filter out hard particles before the raw materials arrive. Regularly inspect the blades for wear. If the blade thickness has decreased by 1/3 or cracks appear, replace them promptly.