I. Product Overview
Under the macro trends of modern sustainable agriculture and chemical fertilizer reduction, the harmless treatment and resource utilization of livestock manure, crop straw, municipal waste, and industrial organic residues (such as distillers’ grains and sugar mill filter mud) have become central to ecological cycling. As a specialized manufacturer in the fertilizer machinery sector, Zhengzhou Yizheng Heavy Machinery Equipment Co., Ltd. leverages decades of experience in solid waste processing and composite shaping technologies to deliver standard, industrial-grade organic fertilizer processing systems.
Our systems are designed to transform complex, raw organic waste streams into premium commercial organic fertilizers characterized by stable nutrient profiles, uniform particle size, and high safety standards. A Yizheng engineering solution is not merely a collection of standalone machines; it is an automated production line that deeply integrates biological fermentation principles with mechanical engineering. Built with heavy-duty industrial configurations, our designs fully account for the high moisture, severe corrosivity, and fibrous nature of organic inputs. Covering capacities ranging from 10,000 to 200,000 tons per annum (TPA), these turnkey lines provide the essential hardware foundation for modern fertilizer plants, large-scale livestock operations, and environmental treatment centers.
II. Working Principle and Process Workflow
The organic fertilizer processing layout engineered by Zhengzhou Yizheng follows a strict technical sequence: “Scientific Fermentation, Precision Crushing, Composite Granulation, and Closed-Loop Cycling.” The physical operations and material transitions across the line are divided into six core sections: 
1. Aerobic Fermentation and Bio-Sanitation (Pre-treatment)
This phase forms the foundation of the entire process. Raw waste (e.g., chicken or pig manure) is blended with structural auxiliaries (e.g., straw powder or rice husks) to adjust the moisture content to 50%–60% before entering the fermentation troughs. Trough-type or wheel-type compost turners forcefully agitate and oxygenate the organic mass via high-speed rotating drums. Driven by aerobic microorganisms actively decomposing organic matter under optimal oxygen levels, the stack temperature rapidly climbs to 55–70°C and is sustained for 7–15 days. This high-heat phase destroys pathogens, parasite eggs, and weed seeds while driving off excessive moisture, yielding a thoroughly stabilized, deodorized base material.
2. Semi-Wet Material Crushing and Refinement
Post-fermentation compost typically exhibits irregular clumping. Our semi-wet material crusher utilizes a vertical shaft architecture housing high-speed rotating blades or chains that apply high-frequency impacts and shear forces. By transforming mechanical kinetic energy generated at high linear velocities, the unit instantly reduces organic feedstocks with moisture levels between 25%–40% into fine powders below 3mm. This ensures microscopic uniformity across the material matrix, providing an optimal particle foundation for subsequent granulation.
3. Computerized Dynamic Batching and Mixing
To meet precise fertilizer formulas—such as the integration of inorganic NPK nutrients or functional microbial inoculants—the organic base is measured via a computerized multi-silo batching system. The material then feeds into a horizontal twin-shaft paddle mixer. Counter-rotating shafts equipped with specialized paddles force material convection, creating a complex, overlapping circulating fluid field within the chamber. This multi-dimensional spatial mixing action ensures a final blend homogeneity exceeding 90%.
4. Advanced Composite Granulation (Process Core)
The blended powder moves into our signature organic fertilizer granulator. Yizheng integrates two distinct mechanical principles within this unit:
- Stirring Tooth Segment: High-speed rotating teeth apply intense mechanical friction to the powder, causing it to condense around moisture film and form dense micro-nuclei.
- Rotary Drum Segment: These micro-nuclei then slide into the rolling drum zone. Under the combined action of centrifugal force and gravity generated by the rotating shell, the nuclei roll continuously, adsorbing surrounding powder and growing layer by layer. This composite mechanical action significantly increases the balling rate of challenging organic materials.
5. Thermal Exchange Drying and Cooling
Freshly formed granules carry elevated moisture and lack structural integrity. A rotary drum dryer utilizes hot flue gas from a clean-energy hot blast stove as its thermal source. Internal flights (lifting plates) continuously lift and shower the granules across the drum cross-section, maximizing the thermal exchange surface area for rapid moisture evaporation. The granules then immediately enter a rotary cooler, which uses high-velocity ambient air for convective cooling. The resulting surface-stress solidification from rapid temperature reduction increases granule hardness to 15N, preventing product deformation or caking after packaging.
6. Fine Screening and Closed-Loop Re-feed
A trommel screening machine uses a rotating mesh barrel to separate finished granules from off-spec chunks and fines. Qualified products flow directly to automated packaging scales for precise dosing, sealing, and warehousing. Concurrently, oversized chunks are directed to a secondary crusher and, along with the screened fines, are returned via an automated re-feed belt conveyor to the granulator intake, establishing a zero-waste, closed-loop circuit.
III. Industry Applications
Yizheng’s organic fertilizer processing lines offer excellent material compatibility across diverse sectors:
- Industrial Livestock Operations: Transforming solid waste from large-scale swine, poultry, dairy, and ovine facilities into highly marketable fertilizer assets, converting environmental compliance pressures into economic returns.
- Agricultural Waste Recycling Centers: Processing bulk crop residues, straw, rice husks, peanut shells, and spent mushroom substrates to return carbon back to the soil matrix for land remediation.
- Agro-Industrial By-product Processing: Deep processing of nutrient-rich industrial residues—including distillers’ grains, vinegar dregs, spent herbs, and sugar factory filter mud—to capture residual value.
- Municipal Environmental Infrastructure: Converting dewatered municipal sludge, green waste, and sorted food waste into safe, pelletized organic compounds for urban landscaping, forestry, and nursery applications.
- Bio-Organic and Inoculant Fertilizers: Serving as a specialized production carrier for functional microbial strains, generating high-viability bio-organic compound pellets for premium cash-crop cultivation.
IV. Equipment Features and Structural Advantages
- Industrial-Grade Anti-Corrosion Engineering: Organic fertilizer environments feature high moisture, persistent dust, and corrosive compounds like ammonia and organic acids. Yizheng extensively deploys premium manganese steel, specialized stainless steels, or high-molecular-weight polymer liners at critical contact zones—including composter paddles, granulator interiors, twin-shaft mixer blades, and dryer flights. Combined with multi-layer heavy anti-corrosion industrial coatings, the machinery delivers excellent structural longevity under harsh chemical stress.
- Optimized Granule Quality & Balling Efficiency: Addressing the technical pain points of low bulk density, high fiber content, and poor natural binding in organic waste, our composite granulator achieves a balling rate above 95%. The resulting pellets are round and uniform (typically adjustable between 2.0–4.5mm) with high compressive strength, ensuring clean compatibility with modern automated agricultural seeders without fracturing.
- Centralized PLC Intelligence: The complete processing line can be governed by a centralized PLC cabinet equipped with an intuitive HMI touch-screen interface. All operational metrics—from dynamic batching ratios to drying zone thermal profiles, device RPMs, and mass flow rates—are displayed digitally in real time, backed by automated fault diagnostics and early-warning alerts.
- Thermal Efficiency and Dust Suppression: The rotary drying system features optimized hot air duct configurations, improving thermal efficiency by over 20% compared to conventional layouts. All dust-generation points (crushing, screening, packaging) are fully sealed and ducted to a high-efficiency pulse baghouse filter. Process tail gases from fermentation and drying integrate seamlessly with our matching biological scrubbing towers to ensure emissions fully comply with regional environmental standards.
- Flexible Modular Plant Configurations: All machinery adopts a modular layout, allowing for flexible positioning in “L-shape,” “U-shape,” or “straight-line” geometries depending on the physical boundaries and topography of the client’s facility. This modularity offers excellent investment elasticity, allowing operators to deploy a simple powder fertilizer line in Phase I and seamlessly upgrade to pelletization and automated packaging units later without structural rebuilding.
Technical Procurement and Configuration Support
The industrial organic fertilizer systems engineered by Zhengzhou Yizheng Heavy Machinery Equipment Co., Ltd. directly resolve the core operational bottlenecks of extended composting cycles, low granulation rates, rapid equipment degradation, and environmental compliance risks. We provide global producers with a stable, high-throughput, and low-OPEX solution.
For tailored process flowcharts, specific equipment sizing tables, or comprehensive factory floor layout drawings matching your target output, please contact our engineering division for factory-direct technical consultations.
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
Post time: May-25-2026