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With the comprehensive advancement of green and ecological agriculture, the drawbacks of traditional chemical fertilizer planting methods are becoming increasingly apparent. Organic fertilizer, with its advantages of being green and environmentally friendly, and improving soil quality, has become the mainstream of agricultural development. Purchasing an organic fertilizer production line has become a high-quality choice for agricultural input enterprises, planting bases, and livestock farmers to transform and upgrade, possessing multiple values ​​in terms of ecology, economy, and society, with significant development advantages.

Choosing an organic fertilizer production line is a key measure to practice ecological environmental protection and realize the resource utilization of waste. Agricultural production generates a large amount of waste such as livestock and poultry manure, crop straw, and kitchen waste. Randomly dumping these wastes can easily breed bacteria, pollute soil and water sources, and cause agricultural non-point source pollution. An organic fertilizer production line can transform various organic wastes into valuable resources through high-temperature fermentation, crushing and composting, and harmless treatment processes. The entire set of equipment adopts a closed production system with deodorization and dust removal processes, ensuring a clean and pollution-free process. This not only solves the problem of agricultural waste disposal but also reduces environmental pollution at the source, contributing to the ecological cycle development of agriculture.

This production line can improve soil quality and help improve the quality and increase the yield of agricultural products. Long-term application of chemical fertilizers can lead to soil compaction, decreased fertility, and excessive heavy metal levels, negatively impacting crop quality and yield. Organic fertilizer processed on this production line is rich in organic matter, microbial flora, and various trace elements, effectively loosening the soil, improving soil structure, and enhancing its water and fertilizer retention capacity. Long-term application of organic fertilizers results in superior crop growth, better taste and appearance of fruits and vegetables, and green, organic agricultural products that better meet market demands, significantly enhancing their market competitiveness.

The efficient and low-cost production model brings stable and considerable economic benefits. Modern organic fertilizer production lines are highly automated, integrating raw material processing, fermentation and granulation to finished product packaging. Only a small number of personnel are needed to operate, greatly reducing labor costs. The equipment allows for large-scale continuous production with stable capacity and uniform product quality, effectively avoiding the problems of low efficiency and inconsistent quality associated with manual composting. Furthermore, organic fertilizer raw materials are readily available and inexpensive, while the finished product enjoys strong market demand, broad sales channels, a short return on investment cycle, and ample profit margins.

In addition, choosing an organic fertilizer production line aligns with national agricultural development policies. Currently, the nation is vigorously supporting the development of green and circular agriculture, issuing numerous subsidy policies to encourage the substitution of chemical fertilizers with organic fertilizers while strictly controlling the overuse of chemical fertilizers. Investing in organic fertilizer production aligns with industry trends and the strategy of sustainable agricultural development. It allows businesses to benefit from policy dividends, seize early opportunities in the green agricultural input market, and achieve long-term stable development.

Organic fertilizer production line equipment is constantly exposed to damp and corrosive organic materials, making it highly susceptible to blockages, wear, and corrosion. Stable equipment operation is the core guarantee for organic fertilizer production capacity and quality. Proper scientific maintenance can effectively extend equipment life, reduce downtime, and lower production costs. Mastering the following maintenance secrets can ensure efficient and stable production of the entire production line.

Daily cleaning to prevent blockages is key to basic maintenance. Organic fertilizer raw materials are mostly damp materials such as livestock manure and straw, which easily adhere to the inside of the equipment after production. After daily shutdown, thoroughly clean the residual material in the crusher, granulator, mixer, and conveyor belt, and clean the air ducts and screens to prevent material agglomeration, corrosion of the machine body, and blockage of the discharge port. At the same time, keep the equipment body and electrical control area clean and dry to prevent dust and moisture from causing circuit failures, reducing high-frequency failures at the source.

Precise lubrication to reduce wear is the core of equipment lifespan extension. Bearings, gears, chains, reducers, and other transmission components are the core of equipment operation and also the most vulnerable to wear. Strictly follow the equipment manual specifications, adding appropriate lubricating oil on time and in the correct quantities to prevent dry running due to insufficient oil and oil buildup. Under normal operating conditions, complete a full lubrication every 200 hours, regularly check belt tension, and promptly adjust or replace aging belts to reduce mechanical friction and ensure smooth equipment operation.

Regular thorough inspections are crucial for stable production. Adhere to a three-tiered inspection system before, during, and after each shift, focusing on checking bolts, nuts, and other fasteners, and promptly tightening any loose or vibrating parts. Monthly inspections of electrical systems such as motors, control cabinets, and sensors are necessary, checking for aging or loose wiring and calibrating intelligent monitoring components. Quarterly comprehensive maintenance is required, replacing easily worn parts such as seals, screens, and blades, checking the condition of drying and cooling system components, and proactively identifying potential faults.

Proper operation and equipment protection are key to long-term efficiency. Strictly prohibit starting equipment under load or operating it overloaded to avoid motor burnout and machine deformation. During production, strictly control the moisture content and impurity content of raw materials to prevent hard objects from entering the crusher and granulator and causing damage to components. Adhering to the principle of "minor faults not resolved overnight, and regular major repairs not delayed," we must eliminate the practice of operating equipment with defects.

Chicken manure is a high-quality natural organic fertilizer raw material, rich in nitrogen, phosphorus, potassium, and various trace elements. However, fresh chicken manure has high moisture content, easily burns roots, breeds bacteria, and has a strong odor, making it unsuitable for direct application. Utilizing a complete organic fertilizer production line, processing chicken manure into granular organic fertilizer not only eliminates these drawbacks and locks in fertilizer effectiveness but also facilitates storage, transportation, and mechanized fertilization, making it an excellent way to integrate crop and livestock farming and promote ecological recycling.

The first step is raw material pretreatment and proportion adjustment. Fresh chicken manure has a high moisture content and an unbalanced carbon-nitrogen ratio. It needs to be mixed with auxiliary materials such as straw powder, rice husks, and sawdust in a 7:3 ratio to effectively reduce moisture, adjust the carbon-nitrogen ratio, and meet fermentation requirements. Simultaneously, remove feathers and debris from the chicken manure to ensure purity. Then, evenly sprinkle in a compound fermentation agent to accelerate organic matter decomposition and shorten the fermentation cycle.

The second step is high-temperature aerobic fermentation and maturation, which is the core step in fertilizer production. The mixed materials are piled into windrows, approximately 2-3 meters wide at the base and 1.5 meters high, with the length adjusted as needed. During fermentation, the temperature is maintained between 55℃ and 70℃, and the material is turned over every 2-3 days using a windrow compost turner to ensure sufficient oxygen supply. Fermentation continues for 7-15 days to thoroughly kill insect eggs, pathogens, and weed seeds, and eliminate the chicken manure odor. The material is considered fully decomposed when it is loose, odorless, and dark brown in color.

The third step is crushing, sieving, and mixing. The decomposed material is prone to clumping, so it needs to be finely crushed using a crusher and then sieved through a 4-6 mm screen to remove incompletely decomposed impurities and hard lumps. Depending on soil requirements, appropriate amounts of micronutrients can be added and mixed thoroughly to improve the fertilizer's nutrient balance, laying a good foundation for subsequent granulation.

The fourth step is granulation, drying, cooling, and packaging. The mixed powder is fed into a new type organic fertilizer granulator to produce uniform granules of 2-4 mm. Freshly formed granules have high moisture content and a soft texture, requiring initial drying to strictly control the fertilizer moisture content below 10%. The dried granules are still very hot and must not be directly screened or packaged. They must be sent to a cooling machine for professional cooling treatment. The equipment uses air circulation to dissipate heat, allowing the hot granules to cool quickly and evenly to room temperature. Compared to natural cooling, the cooling machine is more efficient, effectively preventing the granules from becoming damp, clumping, or moldy due to residual heat accumulation, stabilizing granule hardness, and significantly improving the overall quality of the finished product. After cooling, a second screening is performed to select uniformly sized finished granules; substandard granules can be reprocessed. The processed granular organic fertilizer is clean, odorless, and has long-lasting fertility. It can be stored or applied after sealing and packaging.

In organic fertilizer production, the efficiency of the granulator directly determines the capacity and production cost of the entire production line. The mainstream organic fertilizer granulators on the market are mainly divided into four categories: disc granulators, flat die granulators, rotary drum granulators, and stirring tooth granulators. Different models differ significantly in their working principles, suitable raw materials, and production efficiency, and each has its own focus for different application scenarios. Choosing the right model according to specific needs is crucial for efficient production.

In terms of overall efficiency for large-scale mass production, the rotary drum granulator is the industry's preferred high-efficiency model. It relies on the rotation of the drum to lift and agglomerate the material, has a stable structure, and can operate continuously for extended periods. A single machine can achieve a capacity of 5-50 tons, which is 3-5 times that of a typical disc granulator. This equipment is highly adaptable to high-moisture, high-viscosity fermentation materials, requires no complex pretreatment, has a low raw material loss rate, and boasts excellent operational stability, making it suitable for large-scale, standardized production in large organic fertilizer plants. The only drawback is its large size and high initial investment, making it unsuitable for small workshops.

For small to medium-sized production lines prioritizing high forming efficiency, the stirring tooth granulator is the top choice. This equipment utilizes high-speed stirring and impact molding, specifically designed for high-moisture fermentation materials such as chicken and sheep manure. It allows for direct granulation without drying, eliminating pretreatment steps and significantly improving production efficiency. Its pelleting rate can reach over 90%, producing uniform and rounded particles. A single machine can achieve a stable output of 3-10 tons per hour. With low energy consumption, simple operation and maintenance, and extremely high cost-effectiveness, it is a mainstream high-efficiency model for small to medium-sized production lines.

For multi-functional raw materials and energy-efficient production scenarios, the flat die pellet machine offers outstanding overall performance. This equipment uses a pressure roller extrusion molding principle, making it highly adaptable. It can process dry and wet mixtures such as livestock and poultry manure, straw, and mushroom residue, as well as various powdery and lumpy organic raw materials. No complex pretreatment is required, making its adaptability far exceed that of ordinary models. The equipment operates stably with a low failure rate, can operate continuously for extended periods, and achieves a forming rate of over 88%. The finished particles are compact, have uniform hardness, and are not easily loosened or broken. Meanwhile, it has low energy consumption, a small footprint, simple operation, and low maintenance costs, balancing efficiency and economy, making it very suitable for the routine production of small and medium-sized organic fertilizer plants and cooperatives.

In fields such as agricultural waste resource utilization and organic solid waste treatment, large wheel compost turners are an indispensable core piece of equipment. With their highly efficient material turning capabilities, they inject crucial power into the composting fermentation process, rapidly transforming organic matter into high-quality fertilizer.

By definition, a large wheel compost turner is a mechanical device with a "large-diameter disc" as its core working component, specifically designed for turning and mixing materials in a compost pile. It is widely used in the aerobic composting treatment of organic materials such as livestock and poultry manure, straw, kitchen waste, and garden waste. Compared to traditional small compost turners, it boasts a larger operating radius and stronger power output, adapting to the operational needs of large-scale composting sites and solving the industry pain point of difficulty in uniformly turning large-area compost piles.

Its core structure revolves around the "disc": the machine body is equipped with 1-2 large discs with a diameter of 5-10 meters, with high-strength teeth evenly distributed along the edges of the discs. Below, it features an adjustable-height walking device (tracked or wheeled). The machine body also integrates the power system, hydraulic control system, and operating platform. During operation, the equipment moves to the side of the compost pile via a walking device. A hydraulic system drives the rotating disc to spin at high speed, with the teeth penetrating deep into the pile to turn the bottom layer of material to the surface and press the surface material back into the bottom layer, simultaneously crushing, mixing, and loosening the material.

This operating method offers three core advantages: First, it enhances oxygen supply. The turning process breaks up the compacted layer of the pile, allowing air to fully penetrate the material, meeting the respiratory needs of aerobic microorganisms and accelerating the decomposition of organic matter. Second, it balances temperature and humidity. Through material exchange, it avoids fermentation stagnation caused by excessively high local temperatures or humidity, ensuring the entire pile is in an optimal fermentation environment. Third, it increases efficiency. A single unit can process 300-800 cubic meters of material per hour, more than 50 times the efficiency of manual turning, significantly reducing labor costs for large-scale composting.

In organic fertilizer production lines, waste treatment, and other scenarios requiring material fermentation, the choice of compost turning equipment directly impacts production efficiency and finished product quality. Large wheel compost turners, with their multiple core advantages, have become the preferred choice for many enterprises.

The turning efficiency of large wheel compost turners far surpasses traditional equipment. Their extra-large diameter disc design, combined with multiple sets of high-strength teeth, allows for coverage of a wider area in a single operation, processing up to tens of tons per hour. This enables rapid completion of large-scale material turning tasks, significantly shortening the fermentation cycle. Compared to the multiple-round operation mode of small compost turners, large disc models reduce the number of equipment start-ups and shutdowns, improving the continuity of the overall production process, making them particularly suitable for large-scale production scenarios.

In terms of turning effect, large wheel compost turners excel. The powerful and uniform rotation of the discs thoroughly mixes deep and surface materials, ensuring even oxygen penetration into the material's interior. This effectively solves the pain point of traditional compost turning—"surface thoroughly turned, deep layer oxygen deficiency"—promoting efficient microbial reproduction and accelerating material maturation. Meanwhile, the powerful turning force breaks up material clumps, resulting in uniform granules in the fermented product and improving product quality.

High adaptability is another major advantage. The large wheel compost turner can adapt to different moisture levels and material types, whether it's organic fertilizer raw materials such as livestock manure and straw, or materials for processing such as urban sludge and garbage, it can operate stably. Its tracked or wheeled walking design can flexibly handle complex sites, moving smoothly even in muddy fermentation workshops without the need for complex site modifications.

From a long-term usage perspective, the large wheel compost turner offers better cost performance. The equipment uses thickened steel and wear-resistant parts, resulting in a robust structure, low failure rate, and reduced maintenance costs and downtime. Its power system is energy-efficient, with energy consumption per unit processing capacity far lower than traditional equipment, significantly reducing operating costs over the long term. Furthermore, some models are equipped with intelligent control systems, enabling automated operation, reducing manual labor, and further improving production efficiency.

Fertilizer granulators are core equipment in the production of organic fertilizers and compound fertilizers. The mainstream models on the market are mainly divided into four categories: disc granulators, rotary drum granulators, roller extrusion granulators, and flat die granulators. Different models have significant differences in granulation principles, capacity, granulation effect, and suitable raw materials, directly determining production efficiency and fertilizer quality, and adapting to different scales of production needs.

Disc granulators are commonly used in small and medium-sized production. They rely on the centrifugal force generated by the rotation of an inclined disc to make the material roll and agglomerate into granules, belonging to the wet granulation process. They have a simple structure, low operating threshold, low investment cost, and a pelletizing rate of over 90%, producing round and uniform granules. However, their shortcomings are obvious: limited capacity, and the raw materials need to have a certain degree of viscosity. They are suitable for livestock manure, straw organic fertilizer, etc., but not suitable for dry, non-sticky materials, and are mostly used in small fertilizer processing plants.

Rotary drum granulators are suitable for large-scale industrial production. They also use the wet adhesion granulation principle, using the continuous rotation of the drum to drive the material to roll and adhere into shape. This equipment boasts high capacity, stable operation, and continuous operation, making it suitable for large-scale compound fertilizer production. Its disadvantages include a large footprint, high energy consumption, and generally low granule hardness, making it prone to slight pulverization during storage. It requires complementary drying equipment to improve the process.

The double-roller extrusion granulator uses dry, high-pressure extrusion molding, eliminating the need for water addition, humidification, or drying. It is suitable for various dry powders, including non-sticky mineral fertilizers and compound fertilizer raw materials, producing granules with high hardness, minimal clumping, and no nutrient loss. Its drawbacks include irregular columnar granules with generally lower quality and moderate capacity, making it suitable for medium-sized production lines where granule appearance is less critical and high efficiency and energy saving are prioritized.

The flat die pellet machine is specifically designed for refined organic fertilizer production. It uses rollers to extrude materials, resulting in compact granules, high forming rate, and no material return. It is suitable for high-organic-content raw materials, producing low-moisture finished products and significantly reducing drying energy consumption, making it suitable for high-end organic fertilizer production. However, the equipment wears out faster, leading to relatively higher maintenance costs.

In organic fertilizer granule production, drying is a core process that determines the quality, storage period, and effectiveness of the finished product. After granulation, the moisture content of wet organic fertilizer granules is generally between 20% and 25%. Excessive moisture easily leads to granule clumping, mold growth, and bacterial proliferation, making long-term storage and transportation impossible. Therefore, standardized drying processes are an indispensable key link in organic fertilizer production lines. Through scientific temperature control and uniform air drying, the moisture content of the granules is stably reduced to below 15%, and for bio-organic fertilizers, it is strictly controlled below 12%, ensuring that the fertilizer quality meets standards.

The core equipment for drying organic fertilizer granules is a drum fertilizer dryer, suitable for organic fertilizer granules made from various types of livestock and poultry manure and straw fermentation. It boasts high stability and high production capacity. The equipment incorporates a multi-layer lifting plate structure, which is crucial for achieving uniform drying. After wet granules continuously enter the drum from the feed end, the lifting plates continuously lift, scatter, and disperse the granules as the drum rotates at low speed, forming a uniform floating curtain of material. This prevents granules from piling up and sticking together, ensuring that the granules are in full contact with the hot air, eliminating the problems of uneven drying and uneven drying with the outside being dry while the inside is still wet.

The production line adopts a mature hot air counter-current drying process, resulting in higher heat utilization efficiency. The equipment is heated by clean energy sources such as biomass and natural gas, and the heat exchanger generates constant-temperature hot air. The hot air flows back into the drum from the discharge end, making counter-current contact with the moving wet granules. Temperature parameters are strictly controlled during production, with the inlet air temperature maintained at 150-200℃ and the outlet temperature not exceeding 60℃. This ensures rapid evaporation of internal moisture from the granules while avoiding high-temperature burning of organic matter and killing of beneficial microorganisms in the fertilizer, thus preserving the biological activity of the organic fertilizer.

With the rapid development of green and ecological agriculture, organic fertilizer is gradually replacing traditional chemical fertilizers, becoming a core agricultural input for improving soil quality and increasing yield. Organic fertilizer production equipment, as the core carrier for the resource utilization of agricultural waste such as livestock manure and straw, achieves the harmless and resource-based treatment of organic waste, providing solid equipment support for the sustainable development of ecological agriculture. The entire set of equipment operates as a streamlined production line with a high degree of automation, adaptable to various production scales of all sizes.

A complete organic fertilizer production system encompasses four core systems: pretreatment, fermentation, deep processing, and packaging. These systems work collaboratively to form a standardized production process. The raw material pretreatment equipment includes a crusher, screening machine, and double axis paddle mixer, which can refine raw materials such as straw and livestock manure, precisely adjust the moisture and carbon-nitrogen ratio of the materials, remove impurities, and achieve uniform proportions, laying a solid foundation for subsequent fermentation and effectively improving fermentation efficiency.

The fermentation equipment is the core device of the production line, mainly consisting of a windrow compost turning machine. The equipment continuously turns and tosses the material, increasing its oxygen content and promoting rapid microbial fermentation and decomposition. The high-temperature fermentation stage effectively kills insect eggs, pathogens, and weed seeds, completing the harmless composting process in just over ten days. Compared to traditional natural composting, this significantly shortens the production cycle while avoiding odor pollution and ensuring environmental compliance.

Post-processing equipment includes a granulator, dryer, cooler, and coating machine. The granulator forms uniform granules from the composted powder. The dryer and cooler control the material's humidity and temperature to prevent clumping. The coating machine sprays a slow-release protective layer, extending the fertilizer's shelf life and improving its effectiveness. Finally, an automatic packaging scale completes the quantitative packaging. The entire process is automated, saving time and labor, and producing products with uniform appearance and stable quality.

An organic fertilizer production line is a complete system of equipment for the resource utilization of organic waste such as livestock and poultry manure, crop straw, and kitchen waste. Relying on the systematic division of labor among equipment, it completes the entire process from raw material processing, fermentation and maturation, molding and processing, to finished product packaging. It is a core supporting facility for the circular development of ecological agriculture. The entire production line can be divided into four major systems: pretreatment, fermentation, deep processing, and finished product processing. The precise coordination of each piece of equipment ensures efficient and standardized production of organic fertilizer.

The raw material pretreatment equipment is the foundation of production and mainly includes a crusher, mixer, screening machine, and conveying equipment. The crusher is responsible for crushing straw and hard lumps, refining the particle size of the raw materials, and preventing large pieces from affecting subsequent fermentation. The mixer can mix multiple raw materials and precisely adjust the moisture and carbon-nitrogen ratio to meet aerobic fermentation standards. The screening machine removes impurities and unqualified materials, while the conveying equipment enables automated material transfer, significantly improving pretreatment efficiency.

The fermentation and maturation system is key to improving the quality of organic fertilizer. The core equipment is a compost turning machine, paired with intelligent temperature control equipment. Common trough-type and mobile compost turners can periodically turn the material, increasing its permeability, promoting aerobic fermentation by microorganisms, and quickly completing the composting, deodorization, and sterilization processes, effectively killing insect eggs and pathogens. Intelligent monitoring equipment controls temperature and humidity in real time, stabilizing the fermentation environment at its optimal state, shortening the fermentation cycle, and ensuring thorough composting.

Deep-processing equipment determines the fertilizer quality, with core components including granulators, dryers, and coolers. The composted material is granulated by the granulator to produce uniform organic fertilizer granules with moderate hardness; the dryer removes excess moisture from the granules using constant-temperature hot air, preventing mold and clumping; the cooler rapidly cools and shapes the granules, stabilizing their quality and improving their storage life.

An organic fertilizer production line is a core equipment system for the resource utilization of organic waste such as livestock and poultry manure, straw, and kitchen waste. Through standardized and automated processes, it transforms waste organic matter into high-quality ecological fertilizer, contributing to the development of green agriculture. The entire production line features a coherent process and complete equipment, mainly divided into four core stages: raw material pretreatment, high-temperature fermentation, deep processing and molding, and finished product packaging. Each process is closely linked and operates collaboratively.

Raw material pretreatment is the fundamental stage of organic fertilizer production. Various organic raw materials contain many impurities, vary in form, and have uneven moisture content, requiring specialized equipment to optimize their state. Core supporting equipment includes a material crusher, screening machine, and horizontal mixer. This crushes and refines large materials such as straw and oilseed cake, removes stones and other impurities, and simultaneously mixes and blends livestock and poultry manure with auxiliary materials in a specific ratio, adjusting the material moisture content to 50%-60% and optimizing the carbon-nitrogen ratio to create stable conditions for subsequent fermentation, ensuring fermentation efficiency and effectiveness.

High-temperature aerobic fermentation is the core process of organic fertilizer production, determining the maturity and safety of the fertilizer. The pre-treated material is fed into a fermentation tank, where fermentation is completed using a compost turning machine and ventilation/oxygenation equipment. During production, the material is turned regularly every 3-5 days to ensure aeration and oxygen supply, promoting rapid temperature rise to 55-70℃, effectively killing pathogens, insect eggs, and weed seeds. After 7-10 days of high-temperature fermentation and 15-30 days of post-fermentation maturation, the material is completely rendered harmless and humified, losing its odor and becoming loose in texture, completing the conversion to organic matter.

Organic fertilizer is a green fertilizer that improves soil quality and increases yield. Its raw materials are widely available and diverse, mostly consisting of various organic wastes, processed through fermentation, crushing, and granulation processes on the organic fertilizer production line. A high-quality raw material ratio is crucial for ensuring the fertility and quality of organic fertilizer. Commonly used raw materials in organic fertilizer production lines are mainly divided into four categories, all sourced naturally and environmentally friendly, enabling the resource utilization of waste.

Livestock and poultry manure is the core raw material for organic fertilizer production and is the most widely used. Common types include chicken manure, pig manure, cow manure, and sheep manure. These raw materials are rich in nitrogen, phosphorus, potassium, and various trace elements, with ample organic matter content, making them the main source of organic fertilizer fertility. Chicken manure has a high nutrient concentration, while cow manure is loose in soil and easily decomposes. After being treated with harmless fermentation on the production line, all types of manure can completely eliminate pathogens and insect eggs, avoid root burn problems, and provide a mild and long-lasting fertilizer effect, suitable for various crops and soils.

Agricultural waste is a key auxiliary material for adjusting the raw material ratio, mainly including crop straw, rice husks, corn cobs, soybean meal, and rapeseed cake. These raw materials are high in carbon, which can adjust the carbon-nitrogen ratio of the raw materials, loosen the fermentation pile, improve aeration, and promote microbial fermentation and decomposition. At the same time, straw and cake materials, after decomposition, can replenish soil organic matter, improve soil compaction, and are important ingredients for producing high-quality organic fertilizer.

Industrial organic by-products are high-quality supplementary raw materials, encompassing distiller's grains, vinegar residue, sugar residue, medicinal herb residue, and mushroom residue. After harmless treatment, these industrial wastes have high organic matter content, few impurities, balanced nutrients, and a fine texture that is easy to ferment. This not only reduces the production cost of organic fertilizer but also enables the recycling of industrial waste, aligning with the concept of green production.

Granulators are core equipment in fertilizer production. They come in various types, adapting to different raw materials, production capacities, and finished product requirements, directly determining the quality and application effect of fertilizer granules. With the development of agricultural modernization and the promotion of fertilizer reduction and efficiency policies, various granulators are constantly being optimized to meet the production needs of enterprises of different sizes. The following introduces several mainstream types.

Disc granulators are one of the most widely used models, suitable for the production of organic fertilizers and compound fertilizers, especially for small and medium-sized enterprises. They utilize centrifugal force to roll and agglomerate raw materials within a rotating disc, achieving a granulation rate of over 93%. The granules are round and uniform. The equipment has a simple structure, low investment cost, and convenient operation and maintenance. However, its production capacity is limited, and it requires a supporting drying equipment to treat the moisture content of the finished product.

Rotary drum granulators are the preferred choice for large-scale production, mostly used in the processing of compound fertilizers and organic-inorganic compound fertilizers. Raw materials are granulated within a rotating drum using steam or binders. They offer high production capacity flexibility, enabling continuous operation, high granule strength, and good stability, reducing the subsequent drying load. However, the equipment is large in size and requires a higher initial investment.

The double roller press granulator is the core type of extrusion granulator. It employs a non-drying, room-temperature process, requires no binders, and has a wide range of applications. It uses two opposing rotating rollers to extrude raw materials into flakes, which are then crushed and screened to form granules. These granules have high density and strength, making them suitable for the production of high-concentration compound fertilizers, slow-release fertilizers, and some organic fertilizers. They offer advantages such as energy saving, reduced consumption, and zero waste discharge. However, the granule shape regularity is insufficient, and they have strict requirements on the moisture content and fineness of the raw materials.

The flat die pellet machine is the mainstream type of extrusion granulator. It has a compact structure and small footprint, making it suitable for small to medium-scale fertilizer production. It uses the extrusion action of a flat die and pressure rollers to compress raw materials into granules. It is suitable for various raw materials such as organic fertilizers and compound fertilizers. It is simple to operate and easy to maintain. Its disadvantage is lower production capacity, making it suitable for small processing plants.

The ring die granulator, compared to the flat die granulator, has higher production capacity and better granule forming effect. It is mostly used in medium to large-scale organic fertilizer and feed fertilizer co-production. This type of granulator uses the relative motion of a ring die and pressure rollers to extrude raw materials, resulting in uniform particle density and high strength. It is suitable for various organic and inorganic raw materials, but the equipment wears out relatively quickly, leading to slightly higher maintenance costs.

With the booming development of green agriculture, the market demand for organic fertilizer continues to rise due to its advantages in improving soil and enhancing the quality of agricultural products. A complete organic fertilizer production line is like a precisely operating "nutrient factory." From raw material processing to finished product packaging, each step relies on specialized equipment, and its rational configuration directly determines production efficiency and product quality.

The raw material pretreatment stage is the foundation of the production line. Core equipment includes vibrating screens, crushers, and mixers. Vibrating screens are responsible for screening impurities such as stones and plastics from the raw materials, ensuring product purity.Chain crushers pulverize raw materials such as straw and livestock manure to a suitable particle size, creating conditions for microbial fermentation. Double axis paddle mixers mix different raw materials in a scientific ratio, adjusting the carbon-nitrogen ratio and moisture, laying the foundation for fermentation.

The fermentation stage is the core of organic fertilizer production, with key equipment including turners and fermentation tanks. Trough-type or windrow compost turners periodically turn the materials to ensure an aerobic environment and control the fermentation temperature between 55-70℃, achieving harmless treatment of the materials. Closed fermentation tanks are suitable for scenarios with limited space, significantly shortening the fermentation cycle through automated temperature and oxygen supply control.

Post-processing equipment determines the quality of the finished product and mainly includes granulators, dryers, coolers, and screening machines. Disc or rotary drum granulators produce uniform granules from the composted material, improving product marketability; drum dryers reduce the moisture content of the granules to a standard range, preventing clumping and spoilage; coolers rapidly cool the material, protecting the activity of beneficial microorganisms; and drum screeners separate substandard granules, ensuring uniform particle size in the finished product.

Finally, in the packaging stage, automatic packaging machines accurately weigh and automatically bag the materials, while sewing machines complete the sealing, achieving standardized packaging for easy storage and transportation. In addition, belt conveyors serve as auxiliary equipment, connecting various production stages to ensure continuous material transport and improve the automation level of the production line.

With the implementation of policies to reduce chemical fertilizer use and increase efficiency, the organic fertilizer industry is experiencing a boom. Choosing the right production machinery has become crucial for those starting their businesses. Currently, the market is flooded with equipment of varying levels and low-priced, under-equipped products. Blindly purchasing machinery can easily lead to numerous production failures and high operating costs. Based on industry experience, purchasing organic fertilizer production machinery should focus on the following four core aspects, balancing practicality, economy, and long-term development.

First, accurately match production needs to avoid a mismatch between capacity and operating conditions. Equipment specifications should be determined based on the scale of production and the characteristics of raw materials: small-scale farms can choose simple, low-investment single-machine equipment; medium and large-scale processing plants need to be equipped with complete organic fertilizer production lines. At the same time, select suitable models based on the moisture content and fiber content of different raw materials such as livestock manure and straw. For example, high-moisture materials should prioritize new type organic fertilizer granulators, while high-fiber raw materials require powerful crushing devices to ensure smooth and efficient production.

Second, strictly control equipment quality to build a solid foundation for stable production. The materials and core components of the equipment directly determine its service life. Priority should be given to models using stainless steel or wear-resistant alloy steel for parts in contact with materials to resist corrosion and wear. Key components such as motors and reducers should be from well-known brands, and the equipment should be verified for quality certification to avoid potential malfunctions due to substandard materials and reduce future maintenance costs.

Furthermore, environmental compliance and alignment with industry development trends are crucial. With increasingly stringent environmental regulations, equipment must be equipped with comprehensive waste gas and dust treatment devices to ensure that ammonia and dust emissions meet standards. At the same time, priority should be given to models with low energy consumption and low noise, which not only meet policy requirements but also reduce long-term operating costs and achieve green production.

Finally, the manufacturer's strength and after-sales service are paramount for long-term operation. Choose reputable fertilizer machinery manufacturers with R&D capabilities and extensive case studies. Prioritize their after-sales service system, clarifying the warranty period for core equipment, fault response time, and spare parts supply capabilities. Comprehensive after-sales service can promptly resolve equipment failures, reducing downtime losses, while the manufacturer's technical support can also help optimize production processes.

Amid the wave of green agricultural transformation, the organic fertilizer industry is experiencing rapid growth, attracting many investors to establish organic fertilizer production lines. However, while the industry appears to have low barriers to entry, it actually harbors multiple risks. Blindly entering the market can easily lead to losses. Four core risks require special attention.

Compliance risk is the primary red line for investment. Organic fertilizer production lines must strictly adhere to environmental protection, product quality, and qualification regulations. Violations will face severe penalties. Regarding environmental protection, inadequate treatment of odors and wastewater generated during fermentation may result in fines and production shutdowns for rectification. In terms of product quality, issues such as incomplete fermentation and excessive heavy metals can lead to failed inspections, impacting sales and reputation. Regarding qualifications, operating without fertilizer registration, pollution discharge permits, etc., constitutes unlicensed operation and may result in the revocation of qualifications. Furthermore, land use compliance cannot be ignored; illegal occupation of arable land or failure to register land use as required will face the risk of land repossession.

Raw material supply risks directly affect production continuity. Raw materials are the core of organic fertilizer production. The prices of raw materials such as livestock and poultry manure and straw fluctuate greatly, and some regions experience periodic supply shortages. Failure to secure stable supply channels can lead to soaring production costs or even production stoppages. Furthermore, the quality of raw materials varies greatly. Using materials with excessive heavy metals or pesticide/veterinary drug residues can directly result in substandard products and create safety hazards.

Market and technological risks are equally significant. The low-end organic fertilizer market is characterized by fierce price competition and continuously shrinking profit margins, while the high-end market requires substantial R&D investment, which is difficult for small and medium-sized investors to bear. Technologically, frequent problems such as unstable fermentation processes and equipment malfunctions not only affect product quality but can also lead to production line shutdowns and increased operating costs. In addition, farmers' misconception that organic fertilizers have a slow effect can also hinder product promotion.

The core of purchasing an organic fertilizer production line is the scientific matching of equipment. It must not only fit the production process and match the production capacity, but also be suitable for the characteristics of the raw materials. Avoiding "using oversized equipment" or "capacity bottlenecks" is crucial for achieving efficient, environmentally friendly, and low-cost production. A reasonable equipment matching is key to improving the quality of organic fertilizer and reducing operating costs. Below, we share practical matching techniques based on the entire production process.

Equipment matching should follow three principles: "closed-loop process, capacity matching, and raw material matching," focusing on four core stages: "pretreatment—fermentation—post-processing—packaging." Equipment for each stage must be seamlessly integrated and indispensable. The pretreatment stage is fundamental and requires equipment matching based on the characteristics of the raw materials: high-moisture livestock and poultry manure requires a solid-liquid separator to reduce the moisture content to below 60%; straw-like raw materials require a straw crusher to crush them to 3-5cm to accelerate fermentation; various raw materials require a double axis paddle mixer to precisely mix them at a carbon-to-nitrogen ratio of 25:1 to 30:1 to ensure uniform fermentation.

Fermentation is the core process, directly determining the maturity of organic fertilizer. Equipment selection must be based on production capacity. Small production lines can opt for windrow fermentation combined with a windrow compost turning machine, offering low investment costs and high flexibility. Medium and larger production capacities should prioritize trough-type aerobic fermentation equipment, paired with a hydraulic compost turning machine and aeration system, which can shorten the fermentation cycle by 30% and improve automation. Deodorization equipment is also necessary to ensure environmental compliance.

Post-processing and packaging determine the product's commercialization level and must be tailored to specific needs. Powdered organic fertilizer can be simplified, requiring only a drum screen to remove impurities. Granular organic fertilizer requires additional equipment such as a granulator, dryer, and cooler, with drying temperatures controlled below 80℃ to prevent the inactivation of beneficial microorganisms. Automatic quantitative packaging machines are preferred for packaging, improving efficiency and ensuring accurate measurement.