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

Centered around the disc granulator, it features simple structure, low investment, and quick changeover. Well-suited for processing livestock manure, straw, and biogas residue, this line offers low operating costs and is ideal for startups, farm-based facilities, and frequent formula switching.

OFEC Disc Granulation Line is an economical solution for small to medium-scale organic fertilizer projects and flexible production needs.

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

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

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.

Main Equipment of the Disc Granulation Line

Equipment	Function
Batching System	Continuous batching for 2–6 materials – simple or automatic batching options
Crusher	Vertical/horizontal chain crusher – reduces large lumps to suitable particle size
Mixer	Twin‑shaft mixer – uniformly blends materials, moisture, and binders
Disc Granulator	Core equipment – disc diameter 0.5–4.5 m, capacity 1–6 t/h (standard models) – rolling agglomeration
Dryer	Rotary dryer – reduces pellet moisture to safe storage level
Cooler	Rotary cooler – lowers pellet temperature to prevent moisture regain (can be simplified or omitted for small lines)
Screener	Trommel or vibrating screen – separates finished pellets from returns
Coating Machine	Optional – for anti‑caking or functional coating
Packaging Machine	Open‑mouth bag or ton bag – automatic metering optional
Conveying System	Belt or screw conveyor – connects all main equipment
Dust Collection System	Pulse jet bag filter or simple cyclone – controls dust emissions

Equipment

Function

Batching System

Continuous batching for 2–6 materials – simple or automatic batching options

Crusher

Vertical/horizontal chain crusher – reduces large lumps to suitable particle size

Drum Granulator

Core equipment – disc diameter 0.5–4.5 m, capacity 1–6 t/h (standard models) – rolling agglomeration

Dryer

Rotary dryer – reduces pellet moisture to safe storage level

Cooler

Rotary cooler – lowers pellet temperature to prevent moisture regain (can be simplified or omitted for small lines)

Screener

Trommel or vibrating screen – separates finished pellets from returns

Coating Machine

Optional – for anti‑caking or functional coating

Packaging Machine

Open‑mouth bag or ton bag – automatic metering optional

Conveying System

Belt or screw conveyor – connects all main equipment

Dust Collection System

Pulse jet bag filter or simple cyclone – controls dust emissions

Key Advantages of OFEC Disc Granulation Line

Customizable Disc Materials

Carbon steel, stainless steel, wear‑resistant liners – suitable for different material corrosiveness and abrasion levels.

Stepless Adjustment of Inclination & Speed

Disc angle adjustable from 35° to 55°; variable frequency speed control – precise control of pellet size and output.

Optimized Spray System

Multi‑point atomized spraying – even moistening, higher granulation rate, reduced powder waste.

Proven Process Technology

Validated through multiple global projects – stable granulation rate of 80%–90%, reliable operation.

Turnkey Delivery

Full services from design, manufacturing, installation, and commissioning to training – minimizing coordination costs.

Scalable and Upgradeable

Supports later addition of drying, cooling, coating modules – meeting future capacity or product upgrade needs.

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.

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