Organic Fertilizer Processing Machinery

With global agriculture entering a new era of low-carbon development, sustainability, and soil health management, the treatment of livestock and poultry farming waste, agricultural straw, municipal sludge, and industrial organic solid waste has become a core strategy for promoting resource recycling and improving agricultural ecosystems. Organic fertilizers are rich in organic matter, humic acid, and various secondary and trace elements, playing an irreplaceable role in alleviating soil compaction, enhancing microbial activity, and improving crop quality. However, raw organic waste generally has complex physicochemical characteristics such as high moisture content, strong viscosity, easy agglomeration, and mild acidic or alkaline corrosiveness, placing extremely high technical requirements on the continuous operating capability, structural strength, wear resistance, and corrosion resistance of industrial processing machinery.

As an enterprise in the global fertilizer engineering and heavy equipment manufacturing industry, Zhengzhou Yizheng Heavy Machinery Equipment Co., Ltd. has been deeply engaged in fertilizer machinery R&D and manufacturing for decades. With solid manufacturing capabilities, rigorous process design, and extensive Turnkey Project experience, the company provides global customers with specialized, efficient, and stable complete organic fertilizer processing machinery and system engineering solutions.

I、Product Overview

The complete organic fertilizer processing machinery manufactured by Zhengzhou Yizheng Heavy Machinery Equipment Co., Ltd. is a highly efficient industrial manufacturing system integrating biotechnology, thermodynamics, fluid mechanics, and modern mechanical automation. This machinery system is specially designed for the large-scale treatment of various organic wastes, aiming to transform high-moisture, odorous, and scattered raw materials into high-value commercial granular organic fertilizers with uniform nutrient content, high density, rounded appearance, and convenient storage and transportation through standardized industrial processes.

As a professional organic fertilizer processing machinery manufacturer, Zhengzhou Yizheng Heavy Machinery provides complete machinery covering the entire lifecycle process from raw material pretreatment, aerobic fermentation, fine crushing, dynamic batching, mixing and homogenization, advanced granulation, high-temperature dehydration, forced cooling, fine screening, anti-caking coating, to automatic quantitative packaging. The complete machinery system adopts a modular structural design, with annual production capacities ranging from 10,000 to 200,000 tons. Customized layouts can be flexibly designed according to the customer’s actual plant configuration, investment scale, and raw material characteristics, such as chicken manure, cattle manure, pig manure, sheep manure, biogas residue, mushroom residue, sugar mill filter mud, municipal sludge, etc. The complete line fully integrates an intelligent PLC central control system, realizing dynamic interlocking among all individual machines and real-time adjustment of material flow, greatly reducing labor intensity and helping fertilizer enterprises establish modern green demonstration plants with low energy consumption and no fugitive dust emissions.

II、Working Principle

The continuous operation of organic fertilizer processing machinery is a highly coordinated physical and biological transformation process. Zhengzhou Yizheng Heavy Machinery’s organic fertilizer processing machinery system consists of the following seven core sections, with each individual machine closely connected and operating smoothly in coordination:

1. Biological Aerobic Fermentation and Harmless Treatment Section
   After raw organic waste materials, such as fresh livestock and poultry manure, enter the plant, the moisture content is first adjusted and maintained at 55%-65%, while the carbon-to-nitrogen ratio (C/N) is also adjusted. The material is conveyed into fermentation trenches or fermentation tanks, where groove-type compost turners, crawler-type compost turners, or vertical high-temperature aerobic fermentation tanks manufactured by Zhengzhou Yizheng Heavy Machinery perform regular turning and forced aeration. Under suitable conditions, aerobic microorganisms multiply rapidly, generating high temperatures of 55°C-70°C inside the material pile for 7–14 days, thoroughly eliminating pathogens, parasite eggs, and weed seeds, and completing harmless treatment, deodorization, and maturation of the material.
2. Fine Material Crushing Section
   After fermentation, organic materials generally have a moisture content of 20%-40% and contain agglomerates and coarse fibers of varying sizes. The material is conveyed into a semi-wet material crusher. The equipment adopts high-speed rotating dual-row wear-resistant alloy blades and rotors to apply intensive impact, shearing, and tearing forces to high-moisture materials, rapidly reducing them into fine powder suitable for granulation and fundamentally solving the industry problems of wall adhesion and blockage commonly encountered with conventional crushers.
3. Dynamic Weighing and Precision Mixing Section
   To ensure balanced nutrient content in the finished fertilizer, the crushed organic base material, inorganic nutrients (nitrogen, phosphorus, and potassium), and trace elements are fed into a multi-bin dynamic batching machine according to a preset formulation. The batching machine performs continuous precision metering through high-precision weighing sensors and variable-frequency feeding mechanisms. The materials are then discharged into a twin-shaft horizontal mixer. Driven by counter-rotating twin-shaft paddles, the materials undergo cross-convection and kneading, achieving highly uniform molecular-level mixing within a very short period.
4. Composite Shaping and Advanced Granulation Section
   The uniformly mixed powder enters the granulation section. Depending on material characteristics, customers may select a new-type stirring-tooth granulator, rotary drum granulator, or double-roll extrusion granulator. Taking the new stirring-tooth granulator as an example, under the combined action of high-speed rotating mechanical stirring teeth and centrifugal force generated by the drum, the fine powder rapidly aggregates into spherical granules under the combined effects of surface tension and mechanical force, producing fertilizer granules with a granulation rate exceeding 95%, a dense structure, and a rounded appearance.
5. High-Temperature Dehydration and Forced Cooling Solidification Section
   Freshly granulated particles contain relatively high moisture and have a soft structure. The material is conveyed through the upper feed inlet at the front end of the dryer and enters the dryer. The drum is equipped with composite lifting flights designed through thermal engineering calculations. As the drum rotates slowly, the particles are continuously lifted to form a uniform material curtain and undergo thorough heat exchange with the high-temperature airflow introduced from the hot air furnace; after drying, the material is discharged through the lower outlet at the rear end onto the conveyor belt, significantly reducing the moisture content of the granules. Subsequently, the high-temperature particles are conveyed through the upper feed inlet at the front end of the cooler and enter the cooler, where ambient cold air is forcibly introduced for rapid cooling; after cooling, the material is discharged through the lower outlet at the rear end onto the conveyor belt. This process rapidly hardens the granules, significantly improves crystallization strength, and brings them to safe storage standards.
6. Multi-Stage Fine Screening and Closed-Loop Recycling Section
   The cooled granules are conveyed through the upper feed inlet into the rotary screening machine. Through high-strength screens with different aperture sizes, the material is accurately separated: qualified finished granules proceed to the next process section; oversized particles are discharged through the lower outlet and returned to the crusher for reprocessing; undersized particles are returned to the granulator for secondary granulation, achieving zero-waste closed-loop production throughout the entire line.
7. Anti-Caking Coating and Automatic Quantitative Packaging Section
   Qualified granules enter the rotary coating machine for surface powder coating or oil spraying, forming a dense protective film that enhances moisture resistance and compressive strength. Finally, the material enters the automatic quantitative packaging machine, where a computerized control system performs precision weighing, automatic discharging, bag clamping, sewing, and sealing to complete standardized commercial packaging.

III、Product Applications

The organic fertilizer processing machinery manufactured by Zhengzhou Yizheng Heavy Machinery Equipment Co., Ltd. offers broad material adaptability and process flexibility and is widely used in the following fields:

-          Intensive Livestock and Poultry Waste Treatment Projects: Suitable for the harmless deep processing of manure from large chicken, pig, cattle, and sheep farms, converting harmful waste into high-efficiency commercial organic fertilizer.

-          Comprehensive Utilization of Agricultural, Forestry, and Biomass Waste: Used for processing large quantities of agricultural and forestry residues such as crop straw, rice husks, peanut shells, mushroom residue, bagasse, and distiller’s grains.

-          Urban Environmental Protection and Municipal Sludge Treatment: Applied in projects involving the reduction, harmless treatment, and resource utilization of sludge from municipal wastewater treatment plants, food waste, and organic solid waste.

-          Bio-Organic Fertilizer and Organic-Inorganic Compound Fertilizer Manufacturing: Specific functional microbial inoculants or chemical nutrients are precisely added during the mixing and granulation stages to produce premium bio-organic fertilizers and compound fertilizers.

IV、Product Features

Direct Manufacturer Capability with Complete Turnkey Project Solutions
Zhengzhou Yizheng Heavy Machinery possesses independent capabilities in R&D, casting, machining, and assembly, enabling the company to provide one-stop turnkey services covering plant design, process planning, equipment selection and manufacturing, installation, and commissioning.

-Industrial-Grade Corrosion and Wear Resistance for Long Equipment Life
To withstand the harsh environment associated with high-moisture, mildly acidic or alkaline organic fertilizer materials and corrosive gases, critical components such as mixer liners, granulator stirring teeth, dryer and cooler lifting flights, and screening machine frames are manufactured from thickened wear-resistant alloys or lined with ultra-high molecular weight polyethylene anti-stick panels, significantly reducing equipment wear and corrosion.

-Intelligent PLC Central Control and Automated Operation
The complete production line is equipped with an advanced PLC central control system and Human-Machine Interface, featuring individual machine current monitoring and interlocking protection functions. The upstream feeding speed can be automatically adjusted according to the downstream equipment load, effectively preventing material accumulation, blockage, and idle operation.

-Energy-Efficient, Environmentally Friendly, and Dust-Free Workshop
The airflow systems of the dryer and cooler are optimized through thermal fluid dynamics, achieving high heat utilization efficiency and significantly reducing energy consumption; all transfer points throughout the production line are equipped with enclosed covers and high-efficiency cyclone dust collection and water curtain dust suppression systems, ensuring that the workshop environment complies with stringent environmental standards.

-Excellent Granule Quality and High Granulation Rate
The granulation and thermal processes are perfectly integrated. The produced fertilizer granules achieve a granulation rate exceeding 95%, uniform particle size, smooth surfaces, and high physical compressive strength, effectively preventing moisture absorption and caking during transportation and storage.

V、 Product Specifications

The following table presents the standard technical specifications for complete organic fertilizer processing machinery systems with different production capacities manufactured by Zhengzhou Yizheng Heavy Machinery:

(Note: The above parameters are based on standard process configurations. Actual data can be adjusted and customized according to customer raw material characteristics and specific process requirements.)

Building an efficient, stable, and durable organic fertilizer processing machinery line is the foundation for fertilizer manufacturers to reduce costs, improve efficiency, and expand market share. As a leading organic fertilizer processing machinery manufacturer, Zhengzhou Yizheng Heavy Machinery Equipment Co., Ltd. has accumulated years of R&D expertise in fertilizer equipment, established a rigorous quality control system, and developed a comprehensive after-sales engineering service network. The company remains committed to providing global customers with complete organic fertilizer processing equipment featuring advanced technology and reliable quality.

Organic fertilizer processing machinery refers to mechanical equipment used for processing and handling materials during organic fertilizer production, including crushers, mixers, granulators, screening machines, dryers, and other equipment. These machines can process raw materials into organic fertilizer products suitable for agricultural production. In organic fertilizer manufacturing, processing machinery is a critical part of the production system, helping improve both production efficiency and product quality. From individual equipment selection to turnkey projects, Zhengzhou Yizheng Heavy Machinery will continue to leverage its professional technical expertise to help customers transform various organic wastes into green value and promote the high-quality development of circular agriculture and environmental protection.

For more inquiries or more information, please contact:

Sales Department / Tina Tian
+86 – 15538237222
Zhengzhou Yizheng Heavy Machinery Equipment Co., Ltd
Email: tianyaqiong@yz-mac.cn
Website: www.yz-mac.com