In the context of agricultural modernization and sustainable development, the quality of fertilizer depends not only on its chemical nutrient content but also on the standardization of its physical form. As a core component of the production process, the efficiency of screening equipment directly impacts the market value and brand image of the final product.
Zhengzhou Yizheng Heavy Machinery Equipment Co., Ltd., a leading enterprise with decades of expertise in fertilizer machinery, produces screening equipment renowned for exceptional stability and precision. It has become the preferred choice for major fertilizer producers globally.
I. Product Overview
The Fertilizer Screening Machine is an indispensable link in the production line, responsible for the precise grading of granulated materials. During the production of organic, compound, MAP/DAP, and BB fertilizers, granulation processes (such as rotary drum, extrusion, or disc granulation) often produce particles with uneven size distribution. High-quality finished products must be maintained within a specific range (typically 2.0mm to 4.5mm), while oversized or undersized particles must be removed for reprocessing.
Zhengzhou Yizheng offers two primary categories: Rotary Drum Screens and Vibrating Screens. Trommel screens are widely used in high-capacity lines due to their simple structure and low failure rates, while vibrating screens excel in grading precision and compact footprint.
Our designs specifically address the harsh realities of fertilizer production:
- Corrosivity: Resistance to acidic or alkaline chemical components.
- Hygroscopicity: Preventing mesh blinding and clogging caused by moisture-heavy materials.
- Abrasiveness: Ensuring durability of the mesh and drivetrain under continuous, high-intensity operation.
II. Working Principle
The core objective is “Material Stream Separation,” achieved through two distinct mechanical methods:
This machine uses an inclined cylindrical drum. As the drivetrain rotates the drum along its central axis:
- Feeding & Motion: Material enters at the elevated end. The rotation lifts and drops the material in a “tumbling motion.”
- Sifting: Particles smaller than the mesh openings drop into the hopper below (finished product), while larger particles slide toward the discharge outlet at the end of the drum.
- Multi-Stage Sorting: The drum can be designed in segments with different mesh sizes to separate materials into multiple grades (finished, oversized, and fines) in a single pass.
Vibrating screens use a motor-driven exciter to generate directional vibration:
- Jumping Motion: High-frequency oscillation causes particles to perform a linear or circular jumping motion across the screen surface.
- Self-Cleaning: The vibration breaks surface tension between particles, reducing the chance of sticking and allowing for high-efficiency dry grading.
Technical Note: Zhengzhou Yizheng has optimized the cleaning mechanism for trommel screens by adding high-strength beaters or rotary brushes at the top. This provides real-time cleaning for sticky or oil-rich organic fertilizers.
III. Product Applications
The application of screening machines spans the entire processing cycle:
- Finished Product Grading: Ensuring uniform, spherical granules enter the packaging system to enhance market competitiveness.
- Integrated Re-feed Systems: Linking with crushers for oversized material and returning fines to the granulator. Our “Screening-Re-feed” integrated solution optimizes floor space and automates material cycling.
- Raw Material Pre-treatment: In Bulk Blending (BB) fertilizer lines, screening raw materials like Urea or DAP removes clumps before mixing, protecting the mixer and ensuring formula accuracy.
- Cross-Industry Utility: Beyond fertilizer, these machines are used for solid material grading in coal, construction, mining, and chemical industries.
IV. Product Features
1. High Precision & Customization: We offer woven mesh, perforated plates, or rod screens in various shapes (round, square, rectangular). Grading efficiency exceeds 95% for specific ranges like 2–4mm or 3–5mm.
2. Robust Structure & Low Noise: Built with heavy-duty steel and brand-name reducers, the equipment operates smoothly. The support-roller or gear-drive systems used in our trommel screens significantly reduce vibration and noise.
3. Superior Corrosion & Wear Resistance: To combat ammonia corrosion, screens are made of special manganese steel or stainless steel. The body undergoes shot-blasting and multi-layer anti-corrosion coating.
4. Rapid Maintenance: Our modular design allows the protective cover to be opened easily, enabling a single operator to inspect or replace the mesh quickly, minimizing downtime.
5. Environmental Compliance: The fully enclosed design features professional dust extraction ports, preventing dust escape and ensuring the workshop meets environmental impact assessment standards.
Pricing and Selection Guidance
The price of a fertilizer screening machine is influenced by several variables, typically ranging from tens of thousands to over a hundred thousand RMB. Key factors include:
- Capacity Requirements: Significant differences in material and motor power exist between 1 ton/hour and 50 tons/hour models.
- Material Specifications: Pricing varies between all-carbon steel, partial stainless steel, or full stainless steel configurations.
- Configuration Level: Inclusion of automated cleaning devices, integrated conveyors, and specific motor brands.
As a direct manufacturer, Zhengzhou Yizheng Heavy Machinery Equipment Co., Ltd. provides competitive factory pricing by eliminating intermediaries. We recommend providing specific material characteristics (moisture content, stickiness) and target output when inquiring so our engineers can provide the most accurate technical selection and quotation.
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: Mar-10-2026