Disc Granulation Line
Characterized by simple structure, low investment, and flexible operation, suitable for small to medium-scale organic fertilizer production and frequent formula changes. Produces uniform, spherical granules with good appearance. Capacity range: 1–6 TPH.
Production Line Overview
OFEC Disc Granulation Line is an economical solution for small to medium-scale organic fertilizer projects and flexible production needs.
Main Equipment of the Disc Granulation Line
Equipment | Function |
Continuous batching for 2–8 materials – simple or automatic batching options | |
Vertical/horizontal chain crusher – reduces large lumps to suitable particle size | |
Twin‑shaft mixer – uniformly blends materials, moisture, and binders | |
Core equipment – disc diameter 0.5–4.5 m, capacity 1–6 t/h (standard models) – rolling agglomeration | |
Rotary dryer – reduces pellet moisture to safe storage level | |
Rotary cooler – lowers pellet temperature to prevent moisture regain (can be simplified or omitted for small lines) | |
Trommel or vibrating screen – separates finished pellets from returns | |
Optional – for anti‑caking or functional coating | |
Open‑mouth bag or ton bag – automatic metering optional | |
Belt or screw conveyor – connects all main equipment | |
Pulse jet bag filter or simple cyclone – controls dust emissions |
Equipment
Function
Continuous batching for 2–8 materials – simple or automatic batching options
Working Principle of Organic Fertilizer Granulation
Disc granulation is a wet agglomeration process. The material rolls and tumbles inside an inclined rotating disc due to the disc’s rotation. Simultaneously, water or binding agents are sprayed to moisten fine powders, causing them to adhere, roll, and compress into spherical pellets. Both the disc inclination (35°–55°) and rotation speed are infinitely adjustable, allowing operators to adjust parameters in real time based on raw material characteristics and target pellet size. The granulation process is intuitive and visible. Once pellets reach the desired size, they naturally discharge from the disc edge, then go through drying, cooling, and screening to obtain finished products.
Production Line Specifications
Parameter | Details |
Suitable Raw Materials | Livestock manure, straw, biogas residue, sludge, organic waste, etc. |
Granulation Method | Disc agglomeration (wet process) |
Capacity Range | 1–6 t/h (customizable) |
Pellet Shape | Spherical or oval, diameter 2–8 mm |
Drying Method | Rotary drum dryer with heat sources: coal, gas, oil, or biomass |
Final Moisture Content | ≤15% |
Line Configuration | Batching, crushing, mixing, granulation, drying, cooling, screening, packaging, dust collection |
Key Advantages of OFEC Disc Granulation Line
Customizable Disc Materials
Stepless Adjustment of Inclination & Speed
Optimized Spray System
Proven Process Technology
Turnkey Delivery
Scalable and Upgradeable
Advantages and Disadvantages for Organic Fertilizer Granulation
Advantages
● Low Investment Threshold: Simple structure and low manufacturing cost – ideal for startups or budget‑limited projects.
● Flexible Changeover: Adjustable angle and speed; easy cleaning – suitable for multiple formulas and small batch switching.
● Intuitive Operation: Visible granulation process with real‑time parameter adjustment – easy to master.
● Small Footprint: Short overall line length – low space requirements, easy installation.
● Simple Maintenance: Few moving parts – easy daily maintenance and quick replacement of wear parts, minimizing downtime.
Disadvantages
● Limited Single‑Unit Capacity: Typical capacity 1–6 t/h – not suitable for very large‑scale production.
● Slightly Lower Pellet Strength: Lower compaction compared to drum granulation – care needed during storage and transport.
● Higher Dust Control Requirement: Dust generation during operation – dust collection equipment recommended.
● Operator Experience Dependent: Granulation results influenced by operator skill – requires proper training.
Limited Single‑Unit Capacity
Contact a Process Engineer to evaluate the technical solution.
Resources
The “Multi-Talented” Organic Fertilizer Solution
In organic fertilizer production, flexibility often matters more than maximum
The “Golden Starting Point” for Organic Fertilizer Projects
In organic fertilizer production, the selection of granulation equipment determines
