fertilizer production line

Disc granulation: A key to formation in modern organic fertilizer production equipment

fertilizer granulator Dec 8, 2025

In modern organic fertilizer production, transforming fermented and decomposed powdery raw materials into uniform granules is a crucial leap in enhancing the product’s marketability and practical value. This process relies heavily on specialized organic fertilizer production equipment, and the selection and application of the organic fertilizer granulator directly determines the final product’s shape and quality.

In the granulation stage, the diversity of equipment technology provides flexible production options. Among them, the organic fertilizer disc granulator is highly favored for its unique working principle and visualized granulation process. This granulation method boasts a high pelletizing rate, good granule strength, and particle size controllable by adjusting the disc’s tilt angle and rotation speed, making operation intuitive and maintenance simple.

However, high-quality granulation begins with high-quality raw material pretreatment. Before the material enters the organic fertilizer disc granulator or other types of organic fertilizer granulators, the fertilizer crusher plays a vital “gatekeeper” role. It finely crushes any lumps or agglomerates, ensuring that the raw materials entering the granulation process are uniformly fine and loosely textured.

From the fine pretreatment by the fertilizer crusher to the precise shaping by the organic fertilizer disc granulator, the close coordination of these core organic fertilizer production equipment forms a highly efficient chain in the back-end processing of a modern organic fertilizer production line, greatly promoting the large-scale application and industrial upgrading of organic fertilizer.

Anaerobic-Aerobic Two-Stage Fermentation Technology

fertilizer granulator Dec 8, 2025

In the field of organic waste treatment, anaerobic-aerobic two-stage fermentation technology represents the most advanced comprehensive processing solution currently available. This technology skillfully combines the energy recovery advantages of anaerobic fermentation with the fertilizer quality enhancement capabilities of aerobic fermentation, achieving maximum resource utilization of waste, and is becoming the preferred technology for large-scale organic waste treatment projects worldwide.

Technical Principle: Perfect Microbial Collaboration

The core of anaerobic-aerobic two-stage fermentation technology lies in the orderly cooperation of two different microbial communities. In the first stage, anaerobic microorganisms decompose readily degradable organic matter in a sealed environment to produce usable biogas energy. In the second stage, aerobic microorganisms take over, decomposing residual difficult-to-degrade substances under sufficient oxygen conditions while transforming nutrients into forms more easily absorbed by crops.

This “first produce energy, then improve quality” design philosophy effectively addresses the limitations of single fermentation technologies. The anaerobic stage focuses on energy recovery, while the aerobic stage focuses on fertilizer quality improvement. Their combination avoids excessive loss of nutrients like nitrogen while ensuring the final product’s fertilizer effectiveness, achieving maximum value extraction from waste materials.

Process Flow: Stage-by-Stage Precise Control

The implementation of this technology is divided into two distinct stages. The first stage employs medium-temperature anaerobic fermentation, treating mixed raw materials within the temperature range of 35-40°C, focusing on biogas energy recovery. After fermentation completion, the products undergo solid-liquid separation, with the biogas slurry directly usable as liquid fertilizer and the biogas residue proceeding to the next treatment stage.

The second stage subjects biogas residue to aerobic fermentation treatment. By adding specialized microbial agents and adjusting appropriate moisture and temperature conditions, thorough decomposition of difficult-to-degrade organic matter is completed within 10-15 days. This stage not only improves nutrient conversion efficiency but also effectively eliminates residual pathogenic microorganisms, ensuring the safety and effectiveness of the final product.

Technical Advantages: Triple Benefits

The advantages of two-stage fermentation technology are mainly manifested in three aspects. First, it significantly reduces nutrient loss, with total nitrogen loss rates controllable within 10%, improving nutrient retention efficiency compared to single fermentation technologies. Second, it achieves dual production of both energy and fertilizer, with each ton of raw material capable of producing 150-200 cubic meters of biogas while yielding high-quality organic fertilizer.

Most importantly, this technology possesses excellent environmental performance. The resource utilization rate of organic waste can reach over 90%, and the pollution indicators of final emissions more easily meet environmental standards. This efficient treatment method is particularly suitable for projects near urban areas with strict environmental requirements, providing reliable technical support for achieving circular economy.

Application Practices and Future Development

In European countries, this technology has already been successfully applied. Agricultural waste treatment centers in southern Spain process 50,000 tons of organic waste annually through this technology, achieving energy self-sufficiency and fertilizer supply. German breweries also apply this technology to spent grain treatment, forming internal industrial circular utilization systems.

Although equipment investment is relatively high, two-stage fermentation technology is particularly suitable for large-scale, centralized organic waste treatment projects. With increasing global emphasis on carbon neutrality and circular economy, this technology will encounter broader development opportunities. In the future, combined with the development of intelligent control systems, two-stage fermentation technology will achieve more precise and efficient operations, making greater contributions to sustainable development.

Selection and Application Recommendations

When selecting fermentation technology, considerations should include raw material characteristics, processing scale, and economic feasibility. For large projects with annual processing capacity exceeding 10,000 tons, particularly those requiring both energy recovery and high-quality fertilizer production, two-stage fermentation technology is the most suitable choice.

This technology is particularly suitable for large-scale integrated farming operations, industrial enterprises generating high-concentration organic waste, and centralized urban-rural organic waste treatment projects. Through scientific process design and operational management, anaerobic-aerobic two-stage fermentation technology can transform organic waste into valuable resources and energy, achieving dual goals of economic benefit and environmental protection.

Advanced Fermentation Systems in Modern Organic Fertilizer Manufacturing

Anaerobic-aerobic two-stage fermentation represents a sophisticated advancement within modern fermentation composting technology for organic fertilizer. This process is effectively integrated into the complete organic fertilizer production line of a modern organic fertilizer factory. The initial stage utilizes specialized organic fertilizer fermentation equipment under anaerobic conditions for energy recovery, followed by aerobic treatment for quality refinement. The resulting stabilized material can then be processed through a bio organic fertilizer production line to create products enriched with beneficial microorganisms.

Following fermentation, the material proceeds to granulation, where innovations like the new type two in one organic fertilizer granulator combine processing steps for enhanced efficiency. While the initial investment in such advanced systems, reflected in the organic fertilizer machinery price, may be higher, the long-term benefits of producing high-value, energy-efficient fertilizers justify the cost. This integrated approach demonstrates how cutting-edge biological and mechanical technologies converge to transform organic waste into valuable, nutrient-rich soil amendments, supporting circular economy principles and sustainable agricultural practices on a large scale.

In-depth Analysis of Aerobic Fermentation Technology

fertilizer granulator Dec 8, 2025

In the field of organic fertilizer production, aerobic fermentation technology has become the most mainstream treatment method worldwide due to its maturity, stability, efficiency, and environmental friendliness. Through scientifically controlling microbial activity, this technology transforms organic waste such as crop straw and livestock manure into high-quality organic fertilizer, achieving dual goals of resource recycling and environmental protection.

Principle of Aerobic Microbial Conversion

The core of aerobic fermentation lies in utilizing the metabolic activities of aerobic microorganisms such as Bacillus and Actinomycetes. Under oxygen-sufficient conditions, these microorganisms can efficiently decompose complex macromolecular substances like proteins, cellulose, and fats in organic raw materials. During decomposition, microorganisms release significant heat through respiration, raising pile temperature to 55-70°C. This creates suitable growth conditions for microorganisms while achieving harmless treatment of raw materials.

Temperature control is crucial in this process. Ideal fermentation temperatures not only promote rapid organic matter decomposition but also effectively eliminate pathogens, insect eggs, and weed seeds with eradication rates exceeding 95%. Simultaneously, high-temperature environments facilitate the action of specialized microorganisms like cellulose-decomposing bacteria, accelerating the transformation of difficult-to-degrade materials such as straw.

Systematic Fermentation Process

Successful fermentation requires strict process control. During pretreatment, raw materials undergo crushing and mixing, while adjusting the carbon-to-nitrogen ratio to the ideal range of 25-30:1 and moisture content to 55-60%. Scientific control of these parameters creates optimal conditions for microbial activity.

Depending on production scale and site conditions, fermentation can adopt different forms such as windrow, trough, or tower systems. Windrow fermentation suits small to medium-scale production with lower costs and operational flexibility; trough fermentation better suits large-scale factories providing more stable fermentation environments; tower fermentation, with its high automation and small footprint advantages, becomes the preferred choice for large production lines.

Key Control Factors and Operational Essentials

Turning operations are critical to ensuring fermentation success. By regularly turning compost piles, fresh oxygen is replenished, temperature and humidity are regulated, and efficient microbial activity is maintained. Generally, turning operations are required every 1-2 days during fermentation.

The length of fermentation cycles depends on multiple factors, typically ranging from 7-21 days. Intuitive standards for determining fermentation completion include: color changing from yellowish-brown to dark brown, disappearance of pungent odors, pile temperature dropping to ambient levels, and materials becoming loose. Professional production also requires testing organic matter content, total nutrients, and other indicators to ensure compliance with national standard requirements.

Practical Applications and Global Promotion

In places like Shouguang, China, aerobic fermentation technology has been successfully applied to large-scale organic fertilizer production. Local vegetable bases adopt a “straw + chicken manure” raw material combination, achieving annual processing capacity of 200,000 tons of organic waste through windrow fermentation. This successful case fully demonstrates the practicality and economic viability of aerobic fermentation technology.

The global popularity of this technology stems from its multiple advantages: significant environmental benefits with resource utilization rates reaching over 80%; relatively low equipment investment with high localization rates; strong adaptability capable of processing various types of organic waste. With the development of intelligent technology, modern fermentation systems have achieved real-time monitoring and automatic control of parameters like temperature and humidity, further improving production efficiency and product quality.

Future Development Trends

As global emphasis on sustainable agriculture and environmental protection continues to increase, aerobic fermentation technology will continue to develop and improve. The development of intelligent control systems, specialized microbial agents, and integration with other treatment technologies will promote this traditional technology toward more efficient and environmentally friendly directions.

Aerobic fermentation technology not only addresses the challenge of organic waste treatment but also provides high-quality organic fertilizer for agricultural production, promoting soil health and agricultural sustainable development. The continuous innovation and application promotion of this technology will play an increasingly important role in the construction of global circular agricultural systems.

Advanced Fermentation Systems for Modern Organic Fertilizer Production

The efficiency of the organic fertilizer fermentation process is significantly enhanced by modern fermentation composting turning technology and specialized equipment. Large-scale aerobic fermentation operations utilize various turning machines, including the windrow compost turner for open-air composting, the trough-type compost turner for controlled indoor processing, and the large wheel compost turner for efficient handling of extensive windrows. For challenging materials or continuous operation requirements, the chain compost turner provides robust performance. These essential equipments required for biofertilizer production ensure optimal aeration, temperature control, and microbial activity throughout the fermentation cycle.

Following complete maturation through scientifically managed aerobic fermentation, the stabilized organic matter proceeds to a disc granulation production line for transformation into uniform, market-ready fertilizer granules. This integrated approach demonstrates how biological decomposition technologies combine with mechanical processing systems to create a complete value chain from organic waste to agricultural input. The synergy between advanced turning equipment and controlled fermentation processes not only accelerates decomposition and ensures pathogen elimination but also produces consistent, high-quality organic fertilizers that improve soil health, enhance crop productivity, and support sustainable agricultural systems worldwide. As circular economy principles gain prominence, these technologies play an increasingly vital role in transforming organic waste streams into valuable soil amendments.

NPK Compound Fertilizer Formulation Principles

fertilizer granulator Dec 8, 2025

Core Logic of Formulation Sequence

NPK compound fertilizer formulation involves two key aspects: the industry-standard nutrient labeling sequence and the practical raw material formulation sequence for production. The former represents globally unified standardization norms, while the latter constitutes scientific formulation logic based on raw material compatibility, production processes, and crop requirements. Only by organically combining both can efficient and stable compound fertilizer products be designed.

The labeling sequence is fixed as nitrogen-phosphorus-potassium (N-P₂O₅-K₂O), while the formulation design follows the priority principle of “total nutrients → three-element ratio → phosphorus source → nitrogen source → potassium source → auxiliary components.” This represents the core essence of NPK compound fertilizer formulation design.

Standardized Nutrient Labeling Norms

The global compound fertilizer industry strictly adheres to a unified nutrient labeling sequence: nitrogen (N) – phosphorus (as P₂O₅) – potassium (as K₂O). This standard is clearly specified in fertilizer regulations worldwide, such as China’s GB/T 15063-2020 “Compound Fertilizers” standard. The three numbers in the labeling represent the percentage content of nitrogen, phosphorus, and potassium respectively, unrelated to the actual sequence of raw material addition.

For example, “15-15-15” indicates that every 100 kilograms of fertilizer contains 15 kilograms of nitrogen, 15 kilograms of phosphorus pentoxide, and 15 kilograms of potassium oxide, with total nutrient content reaching 45%, classifying it as high-concentration compound fertilizer. Meanwhile, “20-10-10” indicates the fertilizer emphasizes nitrogen supply, suitable for leafy vegetable crop growth requirements.

Scientific Sequence of Formulation Design

Determining Total Nutrients and Element Ratios

First, determine the total nutrient concentration grade according to the target application. High-concentration compound fertilizers (≥45%) primarily use high-concentration raw materials like urea and monoammonium phosphate, while medium and low-concentration products can incorporate some low-concentration materials or fillers. Simultaneously, establish the nitrogen-phosphorus-potassium ratio framework based on crop requirements and soil characteristics, such as universal type using 1:1:1 ratio, high-nitrogen type suitable for leafy vegetables, and high-potassium type applicable during fruit enlargement stages.

Phosphorus Source Priority Selection Strategy

In specific raw material selection, phosphorus sources should be determined first because they most significantly impact raw material compatibility and granulation effectiveness. Monoammonium phosphate is the preferred choice due to its excellent water solubility and slightly acidic nature, while diammonium phosphate better suits acidic soil conditions. Through precise calculation of phosphorus source dosage, not only can phosphorus element requirements be met, but the nitrogen content within can also offset partial nitrogen needs.

Nitrogen and Potassium Source Supplementation Balance

After determining phosphorus sources, nitrogen sources need supplementation to meet total nitrogen requirements. Urea becomes the preferred nitrogen source due to its high nitrogen content and good binding properties. Potassium source selection should consider crop sensitivity to chlorine elements, with potassium chloride being cost-effective for field crops, while potassium sulfate suits chlorine-sensitive crops like tobacco and fruit trees.

Auxiliary Component Optimization

After determining main nutrient raw materials, appropriate auxiliary components need addition according to granulation process requirements. Binders improve raw material aggregation effectiveness, functional additives provide trace elements or slow-release functions, fillers adjust product concentration and granulation humidity, while anti-caking agents ensure products maintain good physical properties during storage.

Formulation designs must undergo verification testing after completion, ensuring nutrient content compliance, good raw material compatibility, and feasible granulation processes. Through step-by-step scaling from laboratory tests to pilot production, the optimal production formula is ultimately determined.

Common Misunderstandings and Considerations

Several common misunderstandings need avoidance in formulation design: neglecting raw material compatibility may cause nutrient loss or granulation difficulties; incorrect potassium source selection affects quality of chlorine-sensitive crops; excessive filler usage reduces nutrient utilization efficiency. Additionally, practical raw material purity, specific production process characteristics, and cost control factors require consideration.

From Formula Design to Industrial Production

The scientific formulation logic of NPK fertilizers is realized through sophisticated industrial processes. Modern npk fertilizer production technology begins with precise material preparation using specialized equipment like the npk blending machine and bulk blending fertilizer machine, which ensure uniform distribution of raw materials according to the designed nutrient ratios. This critical mixing stage, often involving a fertilizer mixer machine, sets the foundation for consistent product quality throughout the manufacturing of npk fertilizer.

The complete npk fertilizer production line then transforms these precisely blended powders into granules using advanced npk granulation machine technology. Equipment such as the npk fertilizer granulator machine and disc granulator machine convert the mixed materials into uniform, market-ready particles. This integrated approach—from formula calculation through precision blending to controlled granulation—ensures that the final product accurately reflects the designed N-P-K ratios. The synergy between formulation science and production engineering enables the creation of compound fertilizers that meet specific agricultural needs while maintaining efficiency and quality throughout the industrial npk fertilizer production process, supporting global agriculture with reliable, precisely formulated nutrient sources.

Conclusion

NPK compound fertilizer formulation design represents an interdisciplinary field integrating agricultural chemistry, process engineering, and economic management. Only by deeply understanding the intrinsic connection between labeling standards and formulation logic, while fully considering crop requirements, raw material characteristics, and process demands, can high-quality compound fertilizer products meeting both standards and practical application needs be designed. With precision agriculture development, compound fertilizer formulation design is evolving toward more specialized and customized directions.

Rotary drum granulator: converts powdered materials into uniform granules.

fertilizer granulator Dec 8, 2025

In today’s industrial production and agricultural development, the rotary drum granulator, as an efficient and reliable granulation equipment, is playing an increasingly important role. Through unique mechanical design and process principles, this equipment transforms powdered materials into uniform granules, providing high-quality product forms for various industries.

Working Principle and Basic Structure

The core of a rotary drum granulator is an inclined rotating cylinder. When mixed materials enter the cylinder, driven by an electric motor, the cylinder rotates uniformly at 5-20 rpm. Under the combined action of gravity, friction, and centrifugal force, materials continuously tumble and collide within the cylinder. Simultaneously, a spray device applies appropriate amounts of water or binder to the materials, moistening particle surfaces and causing them to adhere together, gradually aggregating into granules with certain strength and size. This wet granulation method is particularly suitable for processing various materials, capable of producing high-quality granules with good sphericity and moderate strength.

The rotary drum granulator not only features simple structure and easy operation but also possesses strong production capacity and wide material adaptability, making it the preferred granulation equipment in multiple industries such as fertilizers and chemicals.

Wide Application Across Multiple Fields

The application scope of rotary drum granulators is extremely broad. In the fertilizer field, it can produce various compound fertilizers, organic fertilizers, and inorganic fertilizers, mixing basic fertilizers such as nitrogen, phosphorus, and potassium in certain proportions to produce fertilizer products meeting different crop and soil needs. In the chemical industry, this equipment can be used for granulating chemical raw materials like catalysts, pigments, and detergents, improving product fluidity, stability, and performance. Additionally, in metallurgical and building materials industries, rotary drum granulators also play important roles, usable for granulating metal ore powders and cement raw materials to improve material properties and enhance product quality and production efficiency.

Systematic Fertilizer Production Process

Using rotary drum granulators for fertilizer manufacturing is a systematic process. First, raw materials require pretreatment including crushing, screening, and batching to ensure materials reach particle size and proportions suitable for granulation. Subsequently, uniformly mixed materials are fed into the rotary drum granulator, where under appropriate rotation speed and inclination angle, combined with water or binder spraying, granule formation is completed. Post-granulation products require post-processing steps such as drying, cooling, and screening before finally obtaining qualified fertilizer products. The entire process requires careful process control and equipment coordination to ensure stable quality of final products.

With continuous technological advancement and growing industrial demands, rotary drum granulators will continue to play important roles across various industries. Their characteristics of efficiency, stability, and strong adaptability make them indispensable key equipment in modern granulation technology, providing powerful technical support for global industrial development and agricultural production.

The Central Role of Drum Granulation in Modern Fertilizer Manufacturing

The rotary drum granulator, also commonly referred to as a drum granulator, is a cornerstone technology in the wet granulation segment of the npk manufacturing process. As a key component of a complete npk production line, this equipment efficiently transforms blended powders into uniform, spherical granules through a tumbling and layering mechanism. Its operation stands in contrast to dry granulation processes that rely on fertilizer granules compaction without added moisture.

The widespread adoption of rotary drum granulators underscores their efficiency and reliability for large-scale, continuous fertilizer production. Their ability to handle diverse raw material formulations and produce consistent, high-strength granules makes them an indispensable part of modern compound fertilizer manufacturing, supporting global agriculture with a steady supply of precisely formulated nutrients.

Key equipment for high-efficiency pretreatment in bio-organic fertilizer production lines

fertilizer granulator Dec 5, 2025

In the field of organic waste resource utilization, sticky and moist livestock and poultry manure, pasty kitchen waste, and insufficiently dried agricultural straw often pose pretreatment challenges due to their high moisture content and tendency to stick together. As an important member of the bio-organic fertilizer equipment system, the widespread application of half-wet material crushers has successfully transformed this technical bottleneck into a starting point for high-efficiency production.

The core capability of the half-wet material crusher lies in its excellent “moisture resistance” and “anti-clogging” design. It can efficiently process viscous materials with a moisture content of 30%-50%. This pretreatment not only solves the problems of subsequent conveying and mixing but also creates an ideal material state for deep fermentation.

In a complete bio-organic fertilizer production line, this equipment plays a crucial “pioneer” role. Its refined processing of raw materials directly improves fermentation efficiency and homogenization. The thoroughly crushed material has a significantly increased specific surface area, which is beneficial for the uniform inoculation and rapid reproduction of functional microorganisms.

The raw materials processed by this equipment exhibit significant advantages when entering the new type organic fertilizer granulator. The uniform and fine material properties significantly improve the granulation rate and enhance particle compactness and uniformity during the granulation process.

From a broader perspective, the technological advancements in half-wet material crushers have greatly broadened the range of raw material choices for bio-organic fertilizer production lines. This not only improves resource utilization but also provides a reliable guarantee for the production of high-quality bio-organic fertilizer products.

NPK fertilizer mixing technology: From homogeneous slurry to precision blending

fertilizer granulator Dec 5, 2025

In modern NPK fertilizer production, the mixing process is not merely simple stirring, but a core technology permeating the entire production process. It directly determines the uniformity of nutrient distribution, affecting the stability and fertilizer efficacy of the final product. From liquid to solid, from chemical to physical, the mixing process, in its diverse forms, supports the production quality of compound fertilizers.

In the initial stages of production, the chemical reaction itself is accompanied by deep mixing of raw materials. When the basic nitrogen, phosphorus, and potassium raw materials undergo chemical reactions under specific conditions, continuous mechanical stirring ensures sufficient contact between the reactants. The homogeneous slurry formed in this process lays the necessary physical foundation for subsequent granulation.

After chemical mixing, the materials enter the refined physical mixing stage. When the slurry or powder needs to be combined with other auxiliary materials, specialized fertilizer mixer machines, through scientifically designed motion trajectories, can achieve a highly uniform distribution of each component in a short time.

In another important branch of NPK fertilizer production—the production of physically blended fertilizers (BB fertilizers)—NPK fertilizer production technology exhibits different technical requirements. Faced with basic fertilizer granules of varying densities and sizes, the mixing process must achieve both uniform nutrient distribution and minimize granule breakage and separation. This targeted mixing technology enables the perfect coexistence of various granule types.

From mechanical stirring in the chemical reactor to the uniform distribution of the finished granules, the mixing process remains a crucial node in the NPK fertilizer production line. Its technological advancements not only improve the intrinsic quality of fertilizer products but also provide a reliable material foundation for the development of precision agriculture.

The impact of material moisture on flat die pelleting machines in organic fertilizer production

fertilizer granulator Dec 5, 2025

In organic fertilizer production, flat die pelleting machines are highly favored for their strong adaptability and low investment cost. However, the moisture content of the material directly determines the success and efficiency of granulation—it can be considered the “lifeline” of the process.

1.Excessively Low Moisture: Results in Failure to Form Pellets and Reduced Output

When the material is too dry (usually with a moisture content below 20%), its viscosity significantly decreases. Under the pressure of the rollers, the powdered material cannot bind effectively, leading to loose, poorly formed pellets or granules with very low strength that break easily.

2.Excessively High Moisture: Causes Blockage and Sticking, Halting Production

If the material is too wet (usually with a moisture content above 40%), it becomes too soft and overly sticky. During compression, the material adheres to the rollers and the flat die mold, forming a thick layer of paste that causes serious clogging.

3.Ideal Moisture Range

Generally, the ideal moisture content for materials processed by a flat die pelleting machine falls within the range of 25%–35%. Within this range, the material exhibits optimal plasticity and viscosity. Therefore, to achieve the best performance of the flat die pelleting machine, it is essential to accurately monitor and pre-treat the moisture content of the incoming material. This can be done by adding dry auxiliary materials (such as straw powder or rice husk powder) or returned material to reduce moisture, or by adding water or slurry to adjust overly dry material.

In summary, precise control of material moisture is key to unlocking the full potential of flat die pelleting machines.

Organic Fertilizer Manufacturing Technology

fertilizer granulator Dec 5, 2025

In the global pursuit of sustainable agriculture, organic fertilizer manufacturing technologies are rapidly developing, forming a complete technological system centered on biological fermentation, supplemented by physical-chemical conversion, and enhanced by deep processing technologies. These technologies transform agricultural waste into valuable resources, achieving a win-win situation for environmental protection and agricultural production.

Biological Fermentation Technology: Harnessing Natural Forces

Aerobic fermentation technology is currently the most widely used organic fertilizer production method worldwide. Through microbial action, organic wastes such as livestock manure and crop straw are decomposed and transformed under sufficient oxygen conditions. The high temperatures generated during fermentation not only eliminate pathogens and weed seeds but also effectively degrade complex organic matter like cellulose. In large agricultural bases like Shouguang in China, this technology has achieved large-scale production of 200,000 tons of organic fertilizer annually.

Anaerobic fermentation technology is particularly suitable for treating organic waste with high moisture content. In enclosed environments, microorganisms decompose organic matter under oxygen-free conditions while producing usable biogas energy. The United States and European Union countries often combine this technology with large-scale biogas projects, achieving dual benefits of energy recovery and fertilizer production. The recently developed anaerobic-aerobic two-stage fermentation technology combines the advantages of both methods, demonstrating excellent results in agricultural waste treatment projects in Spain and Germany.

Physical-Chemical Conversion: Breakthroughs in Technological Innovation

For difficult-to-degrade organic raw materials, physical-chemical conversion technologies provide new solutions. Pyrolysis carbonization technology produces biochar with special structures by treating lignocellulosic materials at high temperatures in low-oxygen environments. This material not only contains abundant organic carbon but also improves soil physical properties, commonly used in Europe for soil improvement in high-end organic agriculture.

Acid-alkali hydrolysis technology uses chemical means to break down the complex structure of cellulose, converting it into easily absorbable small molecules. This technology is particularly suitable for producing highly active liquid organic fertilizers, applied in special crop cultivation in countries like the United States. Oxidation degradation technology utilizes oxidants to treat organic waste, producing liquid fertilizers with good water solubility, suitable for resource utilization of urban organic waste.

Deep Processing Technology: Enhancing Product Value

Granulation technology transforms powdered organic fertilizer into granular form, greatly improving product commercial value and usability. Disc granulators and double-roller extrusion granulators are two mainstream equipment types, with the former producing uniform spherical particles and the latter excelling in energy efficiency. In places like Zhejiang, China, these technologies are also used to produce specialized fertilizers with added trace elements.

Functional additive technology significantly enhances organic fertilizer effectiveness by introducing beneficial microorganisms or special additives. Adding functional microorganisms like nitrogen-fixing bacteria and phosphorus-solubilizing bacteria can produce bio-organic fertilizers; adding components like humic acid and seaweed extracts enables production of specialized fertilizers for specific crops. Through technological innovation, companies like Kingenta Group have successfully developed high-end products with organic matter content exceeding 50%.

Intelligent Control and Environmental Technology

Modern organic fertilizer production increasingly emphasizes intelligent control and environmental protection. Through real-time monitoring of parameters like temperature and oxygen during fermentation using sensors, combined with automated control systems, fermentation cycles are shortened to within 15 days. Simultaneously, advanced dust removal and deodorization equipment effectively control environmental pollution during production, achieving clean production.

With increasing global emphasis on sustainable agriculture, organic fertilizer manufacturing technologies will continue developing toward greater efficiency, environmental friendliness, and intelligence. These technological advancements not only improve organic fertilizer quality and yield but also provide strong support for global agricultural sustainable development, promoting the establishment and improvement of circular agriculture models.

Integrated Systems for Advanced Organic Fertilizer Production

Modern organic fertilizer manufacturing technology is embodied in comprehensive organic fertilizer production line systems that integrate various specialized equipment. The process begins with efficient organic fertilizer fermentation equipment, including the chain compost turning machine for continuous operation and the large wheel compost turning machine for large-scale processing. These systems optimize biological decomposition through controlled aeration and temperature management. Following complete fermentation, the bio organic fertilizer production line incorporates additional microbial inoculation stages to enhance biological activity before proceeding to granulation.

The final stage of processing involves the organic fertilizer granulator, which transforms matured organic matter into uniform, market-ready pellets. This integrated approach demonstrates how advanced manufacturing technologies work synergistically—from initial biological transformation through fermentation to final physical shaping—to produce high-quality organic fertilizers. The continuous innovation in organic fertilizer manufacturing technology enables efficient conversion of diverse organic waste streams into valuable soil amendments while improving production efficiency, product consistency, and environmental performance. These technological advancements support the growing global demand for sustainable agricultural inputs that enhance soil health, promote crop productivity, and contribute to circular economy principles through effective organic waste utilization.

A new type two in one organic fertilizer granulator solves raw material processing challenges

fertilizer granulator Dec 5, 2025

In organic fertilizer production, the challenge of bridging the gap between “mixing” and “granulation” is often amplified by differences in raw material characteristics. The new type two in one organic fertilizer granulator, integrating mixing and granulation, solves these problems with a design more closely suited to the characteristics of the raw materials.

Its most prominent advantage is its ability to handle “dry-wet mixtures.” For example, when mixing fresh chicken manure with a moisture content of 30% with dry straw powder with a moisture content of only 12%, the fertilizer granulator, within the same chamber, first uses the staggered rotation of a spiral stirring paddle to quickly interweave and blend the dry and wet materials. Simultaneously, a built-in micro-humidification device replenishes moisture to the dry material and guides the wet material to dry, resulting in a stable moisture content of 18%-22% after mixing.

It can also precisely control the proportions when dealing with “multi-component mixtures” of raw materials. Many organic fertilizers mix 3-4 raw materials, such as mushroom residue, rice husks, and humus, to enhance fertilizer efficiency. However, the densities of these different raw materials vary greatly. The new type two in one organic fertilizer granulator can automatically adjust the mixing speed according to the density of the raw materials. It slows down the mixing of heavier materials and speeds up the mixing of lighter materials, ensuring precise proportions of each raw material.

Even “difficult-to-bind fibrous raw materials” can be handled effectively. Raw materials like rice husks and peanut shells, with a fiber content exceeding 40%, tend to be loose when mixed alone. During the mixing stage, the two-in-one model uses a built-in shearing blade to cut long fibers into short fibers of 2-3 mm, which are then thoroughly mixed with other raw materials to form a mixture of “fiber skeleton + binding component.” No additional binder is needed during subsequent granulation, and the granules achieve the required hardness.