organic fertilizer production line – organic fertilizer granulator

Practical operation method of compound fertilizer production using rotary drum granulators

2026-01-30 by organic fertilizer production line

Rotary drum granulators are core equipment for large-scale compound fertilizer production due to their stable rolling molding and uniform nutrient mixing. The key to production lies in raw material matching and parameter control to ensure granule quality and nutrient content meet standards. The overall process is clear and easy to scale up.

Raw material pretreatment is fundamental. Raw materials such as urea, monoammonium phosphate, and potassium chloride are selected and precisely measured according to preset nutrient ratios. They are then processed by a fertilizer crusher to a fineness of 80 mesh or higher to avoid large particles affecting molding. Simultaneously, the moisture content is adjusted to 15%-20%, and appropriate binders such as bentonite are added to increase material viscosity, preventing loose and brittle granules and preparing them for subsequent granulation.

Rotary drum granulation is the crucial step. The pretreated material is fed into the equipment, where the centrifugal force and friction generated by rotation drive the material to roll and granulate. Precise control of the rotation speed (15-25 r/min) and inclination angle (3°-5°) is necessary. Too high a speed results in excessively fine granules, while too low a speed leads to low efficiency. The inclination angle must be adapted to the material’s flowability to ensure sufficient residence time of the granules within the drum for uniform molding.

Post-processing determines the quality of the finished product. The formed granules are dried to control the moisture content to 2%-5% to prevent clumping during storage. They are then graded by a fertilizer screener machine; qualified granules (2-4mm) enter the cooling stage, while unqualified granules are crushed and returned to the pre-treatment process for recycling, improving raw material utilization. Finally, they are quantitatively packaged and sealed for storage, completing the entire production process.

During production, the amount of binder and drum parameters need to be fine-tuned according to the characteristics of the raw materials to avoid nutrient loss, while maintaining the cleanliness of the equipment’s inner walls to prevent material adhesion from affecting granulation stability.

organic fertilizer equipment

On-demand fertilizer production: Simple methods for making organic fertilizers of different shapes

2026-01-30 by organic fertilizer production line

Organic fertilizers commonly come in powder, granular, and pellet forms. The core difference in their production lies in the molding process and equipment adaptation. The choice can be made flexibly based on planting needs, balancing efficiency and fertilizer effectiveness.

Powdered organic fertilizer: The simplest to produce, suitable for broadcasting. Composted materials (chicken manure, straw, etc.) are crushed and screened to remove impurities, requiring no molding step. Large-scale production can utilize mixing equipment in an organic fertilizer production line to adjust nutrients and then directly package the product. It is suitable for base fertilization in large fields and greenhouses, offering quick results and low cost.

Granular organic fertilizer: Suitable for mechanized application and convenient for storage and transportation. After crushing and screening the composted material, the moisture content is adjusted to 55%-60%, and then fed into a double roller press granulator for molding. After drying, cooling, and secondary screening, it is packaged. Small-scale composting can use small granulation equipment, while large-scale production can be integrated into an organic fertilizer production line. It is suitable for top dressing of fruit trees and vegetables, as it is less prone to caking and allows for even application.

Pellet organic fertilizer: Suitable for hole application and furrow application. A flat die pelleting machine is used to extrude the pre-treated composted material (a small amount of binder can be added) into pellets, which are then cut, dried, and cooled. It has high density and long-lasting fertilizer effect, suitable for hole application in fruit trees and seedlings, reducing nutrient loss.

In summary, the core of producing different shapes of organic fertilizers is “standardized composting + appropriate molding.” Powdered fertilizer focuses on crushing and screening, while granular and pellet fertilizers rely on granulation equipment. Choosing the appropriate form based on needs can improve application convenience and maximize fertilizer effectiveness.

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Compostable vs. Biodegradable: Don’t confuse these concepts

2026-01-30 by organic fertilizer production line

In everyday use, “compostable” and “biodegradable” are often used interchangeably, but they are not equivalent. Compostable is a subcategory of biodegradable, with the core differences lying in decomposition conditions, product requirements, and applicable scenarios.

Decomposition conditions and timelines differ significantly. Biodegradable substances can be decomposed by microorganisms in the natural environment, with no strict parameter requirements, and the decomposition period varies from months to years, greatly influenced by environmental factors. Compostable substances require a specific composting environment (temperature 55-65℃, humidity 55%-60%, aerobic), and require equipment such as compost turning machines to control temperature, humidity, and aeration, achieving complete decomposition within 3-6 months; in large-scale processing, organic fertilizer production lines can precisely control parameters to ensure decomposition efficiency.

Decomposition products and standards differ. Biodegradable substances only require decomposition into water, carbon dioxide, and microorganisms, with no specific residue requirements. Compostable materials must decompose into harmless humus. After processing on an organic fertilizer production line, they can be used as organic fertilizer to improve soil and must meet environmental standards for heavy metals and other pollutants, without causing secondary pollution.

The applicable scenarios differ. Biodegradable materials have a wide range and are suitable for natural degradation scenarios; compostable materials are mostly organic waste such as kitchen waste and straw, which are standardized and processed using organic fertilizer production equipment to ultimately achieve resource utilization.

A common misconception is that not all biodegradable materials are compostable. Some materials are difficult to completely decompose in a composting environment and may even pollute the byproducts. The core difference lies in whether “complete degradation + resource utilization” can be achieved under composting conditions.

organic fertilizer equipment

Drum Drying Technology: Principles, Applications, and Limitations

2026-01-30 by organic fertilizer production line

In modern industrial production processes, material drying technology plays a crucial role. Among these, drum drying, a classic drying method, has been widely used in various industries. This technology achieves rapid dehydration by evenly coating the material onto the surface of a heated rotating drum. However, behind this seemingly simple process lie complex technical details and application limitations.

Process Principles and Technical Flow

The core of drum drying lies in the clever combination of heat transfer and material movement. The entire process typically involves four continuous and precise steps, each of which significantly impacts the final product quality.

The feeding stage is fundamental to the success of the process. The wet material must be evenly coated onto the drum surface, with a thickness typically between 0.1 and 1.5 millimeters. A chemical company in Shanghai uses drum drying to process pigment slurry, and they ensure that the coating thickness error does not exceed ±0.05 millimeters through a precisely designed feeding device. This precision control is crucial for ensuring consistent product quality. Common feeding methods include immersion, spraying, and roller coating; the appropriate feeding method needs to be selected based on the material characteristics.

The design of the heating system directly affects drying efficiency. The drum is usually heated by steam, with the temperature controlled between 80 and 150 degrees Celsius. An engineer from a German equipment manufacturer explained that they use a double-shell design, with the inner layer serving as the heating medium channel and the outer layer as the material contact surface. This structure ensures uniform heat distribution. In actual operation, the heating temperature needs to be precisely adjusted according to the material characteristics and moisture content.

The evaporation process occurs during two-thirds of the drum’s rotation cycle. As the drum rotates slowly, the thin layer of material is gradually heated, and the moisture evaporates rapidly. Rotation speed control is a key parameter, usually maintained at 2-10 revolutions per minute. Too fast a speed can lead to insufficient drying, while too slow a speed may cause the material to overheat. A British food processing plant, when drying mashed potatoes, controls the rotation speed at 4.5 revolutions per minute, ensuring both effective drying and preventing starch denaturation.

The scraping stage requires extremely high precision. The scraper, installed at a specific angle, must remain sharp to ensure that the dried material is completely removed. A Japanese equipment manufacturing company has developed an automatically adjusting scraper system that can adjust the scraping angle and pressure in real time based on the roller surface condition, significantly improving product yield.

Technological Limitations and Challenges

Despite the maturity of roller drying technology, its inherent limitations restrict its application range. Heat-sensitive materials are particularly susceptible to damage, which is especially evident in the food and pharmaceutical industries. A French pharmaceutical company attempted to dry a certain antibiotic intermediate using roller drying, but found that the high temperature resulted in a 15% loss of active ingredients, ultimately forcing them to switch to vacuum drying technology.

Capacity limitations are another prominent issue. Compared to spray drying, the processing capacity per unit time of roller drying is significantly lower. A US dairy company conducted comparative tests and found that, under the same energy consumption, the capacity of spray drying was three times that of roller drying. This prompted them to upgrade most of their production lines to spray drying systems.

There are also significant limitations in material adaptability. High-sugar materials tend to stick to the roller surface and are difficult to scrape off. An Italian confectionery company attempted to dry caramel syrup using roller drying, but the product yield was less than 70%, with a large amount of material remaining on the roller surface. Similarly, materials containing salt or other corrosive components may damage the roller surface, shortening the equipment’s lifespan.

Equipment investment and maintenance costs are also factors to consider. Precisely machined rollers are expensive, and replacement costs are even higher. A Chinese chemical company calculated that the initial investment in a roller dryer was 30% higher than similar drying equipment, and the annual maintenance costs were also 15% higher.

Operational complexity cannot be ignored. Maintaining a stable film requires operators to have extensive experience and be able to balance multiple parameters such as feeding speed, roller rotation speed, and temperature. Novice operators typically require 3-6 months of training to become proficient.

Special Applications in Grain Processing

Roller drying has a rather unique application in the field of grain processing. Although technically feasible, there are significant limitations in practical application. For raw grains, the conditions of roller drying are too harsh. Experiments by a Canadian grain research institute showed that roller drying increased the cracking rate of wheat by 8% and increased the degree of protein denaturation by 12%, significantly reducing processing quality and storage stability.

However, in the processing of grain by-products, roller drying has found its niche. Materials such as flour, bran, and starch are particularly well-suited to this drying method. An Australian feed company uses drum drying to process wheat bran, controlling the drum temperature below 90 degrees Celsius to achieve effective drying while preserving nutrients. They have specifically improved the feeding system to ensure the wheat bran is evenly distributed on the drum surface.

Drying animal feed pellets is another suitable application. Drum drying can quickly remove surface moisture from the pellets while maintaining internal moisture content. A Danish feed factory uses drum drying to process fish feed pellets, precisely controlling the drying time to achieve the ideal moisture content while maintaining the integrity and nutritional value of the pellets.

Technological Development and Future Trends

Faced with the limitations of traditional drum drying technology, equipment manufacturers are actively seeking innovative solutions. New drum dryers employ a segmented heating design, with different temperatures set in different zones to adapt to the drying characteristics curve of the material. Intelligent control systems monitor material status in real time through sensors, automatically adjusting process parameters and reducing operational difficulty.

Advances in materials science have also brought new possibilities to drum drying technology. The application of special coating materials reduces material adhesion problems, and the development of corrosion-resistant materials expands the range of applicable materials. A ceramic-coated drum developed by a German engineering company has a lifespan twice as long as traditional stainless steel drums and also improves heat transfer efficiency.

With increasing environmental requirements, energy recovery systems have become a new development direction. The installation of waste heat recovery devices reduces the energy consumption of drum drying by 20-30%. A closed-loop drum drying system developed by a Japanese company not only recovers waste heat but also reduces dust emissions, meeting stricter environmental standards.

Despite facing numerous challenges, drum drying technology maintains its important position in specific fields due to its unique advantages. When choosing a drying technology, manufacturers need to consider various factors, including material characteristics, product quality requirements, investment budget, and operating costs. As technological innovation continues to advance, drum drying technology will undoubtedly find suitable applications in a wider range of fields, providing reliable technical support for industrial production.

Integrated Fertilizer Production Systems

While drum drying serves specific applications, modern fertilizer production relies on integrated systems of professional fertilizer manufacturing equipment tailored to product type. For compound fertilizers, a complete npk fertilizer line is essential, starting with precise formulation using an npk blending machine or npk bulk blending machine for dry powders. Granulation is then achieved via a disc granulator (forming the core of a disc granulation production line) or a double roller press granulator for compaction. In contrast, a bio organic fertilizer production line begins with organic waste processing, where a double screws compost turning machine is key for aerobic fermentation. The cured compost is then shaped in an organic fertilizer disc granulation production line, where the disc granulator for shaping creates uniform organic pellets. Together, the crushers, mixers, turners, and granulators form the comprehensive suite of fertilizer raw material processing machinery and equipment, enabling efficient transformation of diverse raw materials into high-quality fertilizer products.

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Double axis paddle mixers: The “efficiency champion” of fertilizer mixing

2026-01-30 by organic fertilizer production line

With their symmetrical, staggered paddle structure, double axis paddle mixers play an irreplaceable role in fertilizer mixing production. Adaptable to diverse applications such as BB fertilizers, organic fertilizers, and compound fertilizers, they are core equipment for high-quality fertilizer production.

Strong convection mixing, balancing uniformity and efficiency. The twin shafts rotate in opposite directions, and the staggered paddles create a multi-dimensional convection field, rapidly blending raw materials with different specific gravities and particle sizes. The mixing uniformity far surpasses that of single-shaft equipment, and the nutrient variation coefficient can be controlled within 3%. The mixing cycle is shortened by more than 40%, meeting the batch processing needs of NPK fertilizer production lines and significantly increasing overall capacity.

Outstanding adaptability, solving complex raw material challenges. Compared to ordinary fertilizer mixers, it can easily handle high-humidity, highly viscous raw materials (such as well-rotted organic fertilizers and sludge-based fertilizers). The special angle design of the paddles prevents adhesion to the walls and does not damage the properties of the granular raw materials. In BB fertilizer production, it can achieve uniform mixing of dry powder and small amounts of additives, ensuring precise formulation.

Low-loss and energy-saving, suitable for large-scale production. The extremely small gap between the impeller and the machine cavity results in minimal raw material residue and a material utilization rate exceeding 98%. The dual-shaft coordinated operation saves approximately 25% more energy than traditional equipment. It can also seamlessly integrate with screening and granulation equipment, achieving integrated mixing and pretreatment, simplifying the process.

In summary, the double shaft paddle mixer, with its structural advantages and high efficiency, versatility, and low consumption, has become a powerful tool in fertilizer mixing, stably ensuring fertilizer quality and helping fertilizer production upgrade towards higher efficiency and precision.

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Dry granulation double roller press granulator: Injecting new momentum into agricultural development

2026-01-30 by organic fertilizer production line

The dry granulation double roller press granulator, with its core advantages of “no drying, low energy consumption, and wide adaptability,” breaks through the bottlenecks of traditional granulation technology, providing solid support for high-quality agricultural development and becoming a key carrier for the upgrading of modern agricultural equipment.

Solving the pain points of traditional granulation. This equipment does not require high-temperature drying; it directly forms dry powder raw materials through roller pressing, reducing energy consumption by more than 30% and significantly reducing production costs. It is also compatible with various raw materials such as NPK compound fertilizers and mineral fertilizers. After pretreatment by a fertilizer screener machine and mixing by a fertilizer mixer, it can quickly produce high-strength granular fertilizers.

Optimizing fertilizer application efficiency. The granular fertilizers produced by this equipment have uniform strength and are not easily powdered, reducing transportation and storage losses to less than 2%; when applied, it is compatible with mechanized operations, and nutrient release is slow and sustained, effectively improving fertilizer utilization and preventing soil compaction. Especially in large-scale planting, granular fertilizers of different particle sizes can be customized to meet the differentiated needs of crops such as corn and fruits and vegetables.

Empowering green circular agriculture. This equipment can directly process dry powder raw materials made from agricultural waste such as livestock and poultry manure and crop straw, realizing the resource-based transformation of “waste → organic fertilizer.” At the same time, there are no wastewater or exhaust gas emissions, reducing agricultural non-point source pollution and promoting the transformation of agriculture from a “resource-consuming” type to a “circular and efficient” type.

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Modern NPK Fertilizer Granulation Technology

2026-01-30 by organic fertilizer production line

As global agriculture transforms towards high-yield, high-efficiency, and sustainable development, NPK compound fertilizer granulation technology is undergoing profound changes. From traditional disc granulation to today’s intelligent, low-carbon granulation systems, technological innovation is reshaping the entire fertilizer industry, driving fertilizer products towards greater efficiency, environmental friendliness, and precision.

High-Tower Melt Granulation: A Pioneer in High-Efficiency Production

High-tower melt granulation technology represents the highest level of current high-concentration NPK compound fertilizer production. The core of this technology lies in utilizing the physical properties of molten raw materials to achieve rapid molding. When urea or ammonium nitrate is heated to a molten state, it is mixed with phosphate fertilizer, potash fertilizer, and other raw materials to form a uniform slurry, which is then sprayed through precision nozzles at the top of the tower to form fine droplets. During the descent, the droplets rapidly solidify upon contact with cold air, forming unique spherical particles.

A large fertilizer company in Jiangsu Province has introduced a high-tower granulation production line capable of producing 300,000 tons of high-concentration compound fertilizer annually. The company’s technical director explained that compared to traditional granulation processes, high-tower granulation reduces energy consumption by 40%, controls product moisture content to below 1%, and completely eliminates the need for drying. Even more remarkably, this technology naturally creates micropores on the surface of the granules, enhancing their solubility and serving as a natural anti-counterfeiting measure.

Intelligent Control System: The Digital Brain of Precision Production

Modern granulation production lines are shifting from relying on manual experience to data-driven intelligent production. In an intelligent fertilizer factory in Shandong, a huge screen in the central control room displays every detail of the production line in real time: raw material ratios, granulation temperature, granule size, product composition, and other data are constantly updated. This system integrates PLC automatic control technology and an intelligent sensor network, achieving comprehensive digital management of the production process.

The improvement in precision during the batching stage is particularly significant. Using DCS control technology combined with a high-precision dynamic feeder, the raw material ratio error is controlled within ±0.1%. This means that the nitrogen, phosphorus, and potassium ratios in each fertilizer granule are almost perfectly consistent. The factory manager stated that this precise control not only improves product quality stability but also reduces raw material waste, saving approximately 3 million yuan in production costs annually.

Green Production Processes: Responding to the Demands of Carbon Neutrality

Faced with the global goal of carbon neutrality, fertilizer granulation technology is rapidly developing towards a more environmentally friendly direction. A fertilizer company in Zhejiang has established a closed-loop production system that successfully recovers and utilizes ammonia emitted during the granulation process, reducing environmental pollution and improving raw material utilization. The ammonia recovery device installed by the company can recover approximately 500 tons of ammonia annually, equivalent to saving 1,500 tons of urea raw materials.

The application of waste heat recovery technology further improves energy efficiency. In a modern fertilizer factory in Guangdong, waste heat generated during the drying and cooling processes is effectively recovered and reused for raw material preheating through a heat exchange system, reducing the energy consumption of the entire production line by 12%. The factory manager calculated that although this upgrade cost 2 million yuan, it saves 800,000 yuan in energy costs annually, recouping the investment in two and a half years.

Breakthroughs in dry-free granulation technology provide a new path for energy conservation and emission reduction. Through innovative improvements to the roller extrusion granulator, new roller skin materials and pressure control systems enable the direct production of high-strength granules at room temperature, completely eliminating the energy-intensive drying process. Application of this technology at a fertilizer company in Yunnan Province shows that compared to traditional processes, energy consumption is reduced by 35% and carbon dioxide emissions by 40%.

Functional Innovation: From Simple Granulation to Intelligent Fertilization

Modern granulation technology has transcended simple physical forming, developing towards functionalization and intelligence. Intelligent coating technology achieves controlled nutrient release by spraying biodegradable polymers onto the granule surface. A slow-release fertilizer developed by an agricultural technology company in Shanghai can automatically adjust the nutrient release rate according to soil temperature and humidity, increasing fertilizer utilization from the traditional 30% to over 60%.

The introduction of nanotechnology has opened up new avenues for fertilizer efficiency enhancement. Incorporating nano-sized phosphorus and potassium particles into the granulation process significantly increases the specific surface area and dissolution rate of nutrients. Field trials have shown that nano-fertilizers can increase crop phosphorus absorption by 25% and potassium absorption by 20%, ensuring crop yield while reducing application rates.

Bio-compound granulation technology perfectly combines chemical fertilizers with biological agents. Adding specific microbial agents in the later stages of granulation produces fertilizers that not only provide chemical nutrients but also improve the soil’s micro-ecological environment. A bio-compound fertilizer produced by a Sichuan company has shown excellent performance in corn cultivation, not only increasing yield but also significantly improving soil structure.

Future Outlook: Technological Integration and Industrial Upgrading

The innovative development of NPK fertilizer granulation technology is driving the upgrading of the entire industry. With the in-depth application of technologies such as the Internet of Things, big data, and artificial intelligence, future granulation production lines will be more intelligent and flexible. Personalized customized production will become possible, and specialized fertilizers for different crops and soil conditions will become more widespread.

Meanwhile, with the global emphasis on sustainable agriculture, low-carbon and environmentally friendly granulation technologies will gain greater development space. The application of renewable energy sources such as solar energy and biomass energy in the granulation process will further reduce the carbon footprint of fertilizer production. The in-depth practice of the circular economy concept will more closely integrate fertilizer production with the resource utilization of agricultural waste.

From high-tower melt granulation to intelligent control systems, from green production processes to functional innovations, the development trajectory of NPK fertilizer granulation technology clearly demonstrates a vivid picture of a traditional industry transforming towards modernization and intelligence. These technological innovations have not only improved the quality and efficiency of fertilizer products but also made significant contributions to global food security and sustainable agricultural development. Driven by both technological progress and market demand, fertilizer granulation technology will undoubtedly continue to advance towards greater efficiency, environmental friendliness, and intelligence.

System Integration: From Blending to Granulation

The advanced trajectory of npk fertilizer production technology encompasses a spectrum of solutions tailored to product specifications and scale. For facilities prioritizing formulation flexibility and lower capital expenditure, a system centered on a high-precision npk blending machine or bulk blending fertilizer machine is optimal. This npk bulk blending machine accurately mixes dry, powdered nitrogen, phosphorus, and potassium sources with other additives, a crucial stage in the broader npk fertilizer manufacturing process. For producing uniform, dust-free granules that enhance handling and nutrient release, a complete npk fertilizer production line is required. The heart of this line is the npk fertilizer granulator machine, with technologies like rotary drum or high-tower melt granulation representing the core of modern npk granulation machine technology. This key npk fertilizer granulator is supported by upstream and downstream units, including a pre-mixing fertilizer mixer machine, dryers, coolers, and coaters, which together form the complete suite of npk fertilizer granulator machine equipment. The choice between a bulk blend system and a full granulation line ultimately defines the product’s physical form, dissolution characteristics, and market application.

organic fertilizer equipment

Packaging machines for high-efficiency organic fertilizer production lines: The quality guardian in the final stage

2026-01-29 by organic fertilizer production line

As the core finishing equipment in a high-efficiency organic fertilizer production line, the packaging machine directly determines the storage and transportation stability and appearance regularity of the finished organic fertilizer. Its efficiency and adaptability are key to connecting production and distribution.

Mainstream packaging machine types cater to different production needs. Automatic quantitative packaging machines are the first choice for large-scale production lines, accurately controlling the weight of standard specifications such as 25kg and 50kg. Combined with a spiral feeding mechanism, it avoids particle breakage and blockage, achieving integrated feeding, weighing, and bagging, significantly improving efficiency. Vacuum packaging machines are suitable for bio-organic fertilizers that are prone to moisture absorption and contain active bacteria, effectively isolating them from air and moisture to extend shelf life. Sewing machines and heat-sealing machines, as supporting equipment, ensure sealed bag openings and prevent leakage and moisture absorption.

High-efficiency operation requires consideration of three key performance points. Quantitative accuracy is key; errors must be controlled within a reasonable range to ensure product standardization. The machine body must have an anti-sticking and anti-clogging design to address the sticky nature of organic fertilizers, reducing malfunctions and material waste. The level of automation must be compatible with the production line, linking with upstream granulation and screening processes to reduce manual intervention and improve overall efficiency.

High-quality fertilizer packaging machines can enhance the value of the finished product. Standardized packaging and reliable sealing reduce nutrient loss and clumping during storage and transportation, preserving fertilizer efficacy. Simultaneously, they can flexibly adapt to granular and powdered organic fertilizers, adjusting parameters to meet diverse production needs, ensuring a highly efficient closed-loop system for organic fertilizer production lines.

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Building a chicken manure organic fertilizer production plant from scratch: A complete practical guide

2026-01-29 by organic fertilizer production line

Chicken manure is rich in nitrogen, phosphorus, and potassium, but it is highly moist, sticky, and has a strong odor. Establishing a chicken manure organic fertilizer production plant requires focusing on the core principles of “harmlessness + resource utilization,” specifically addressing the challenges posed by the characteristics of the raw materials, balancing compliance, efficiency, and quality, and building a closed-loop production system.

Solidify the foundation of raw materials and site. Secure a stable source of chicken manure, sign long-term agreements with farms, and strictly control impurities in the raw materials. The site should be located far from residential areas and water sources, with reserved environmental protection distances. Different functional areas should be planned in zones, equipped with seepage-proof leachate collection ponds and odor treatment facilities to prevent secondary pollution.

Set up the production line with suitable equipment. Equipment configuration based on scale: Pre-treatment uses a solid-liquid separator for dehumidification, paired with a fertilizer crusher and fertilizer mixer to mix chicken manure and straw/sawdust at approximately a 1:2 ratio to adjust the carbon-to-nitrogen ratio; fermentation uses horizontal fermentation tanks or double screws compost turning machines, maturing at 55-65℃ for 7-15 days for sterilization; deep processing includes granulation, screening, and packaging equipment to form a complete organic fertilizer production line.

Improve compliance and process systems. Obtain environmental protection filings, discharge permits, and finished fertilizer registration certificates, and establish a quality testing mechanism. Addressing the odor-prone nature of chicken manure, precisely control oxygen supply and turning frequency, and use microbial agents to accelerate maturation and reduce odor diffusion.

Build an operational closed loop. Control raw material costs and transportation losses, determine finished product types based on market demand, and connect with growers and agricultural input channels. Develop a regular equipment maintenance plan to ensure continuous operation of the production line.

organic fertilizer equipment

Does compost smell bad? Only due to improper preparation!

2026-01-29 by organic fertilizer production line

Many people mistakenly believe that compost must smell bad. In fact, high-quality compost only emits a faint earthy smell. A pungent odor, such as putrid or ammonia-like smell, is caused by improper preparation. Composting is essentially the aerobic decomposition of organic matter by microorganisms. With proper methods, odorless composting can be achieved. However, improper handling can lead to anaerobic fermentation and nutrient imbalance, resulting in unpleasant odors.

Key errors include: 1. An imbalanced carbon-nitrogen ratio: Too much nitrogen and too little carbon causes microorganisms to decompose too quickly, releasing large amounts of ammonia and producing a pungent smell. 2. Insufficient ventilation: Overly compacted piles or untimely turning create an anaerobic environment, producing hydrogen sulfide and other substances that emit a putrid odor. 3. Uncontrolled humidity: Too high humidity causes material to clump together and poor ventilation, while too low humidity reduces microbial activity, leading to spoilage and unpleasant odors.

The correct method can completely eliminate odors. Using a carbon-to-nitrogen ratio of 25:1 to 30:1, compost is regularly turned using organic fertilizer composting equipment such as windrow compost turning machines. Large-scale production relies on organic fertilizer production lines, precisely controlling the turning frequency, ratio, and humidity to ensure an aerobic environment throughout the process. Maintaining the compost’s moisture content at 55%-60%, combined with composting microbial agents to accelerate decomposition, reduces odor.

In summary, compost odor is not an inherent characteristic but rather a warning sign of operational errors. By controlling the three key aspects of raw materials and employing scientific turning methods, odorless composting can be achieved.