Disc Granulator

The OFEC Disc Granulator is the core granulation equipment in organic fertilizer production lines. Adopting a wet agglomeration process, it is specifically designed for organic fertilizer manufacturing and organic waste valorization. It delivers high pelletization rates, uniform spherical granules, and intuitive operation, with a single-unit capacity ranging from 0.2 to 20 t/h.

Product Overview

It uses a non-pressure (rolling growth) agglomeration method: materials roll on an inclined rotating disc while binders and feed materials are continuously added, allowing fine particles to gradually adhere and grow into spherical granules. This equipment is widely used in organic fertilizer production and organic waste treatment, particularly suitable for producing organic fertilizer granules that are easy to transport and store.

The OFEC Disc Granulator (also known as pan granulator or disc pelletizer) is a key piece of equipment for converting powdered organic materials into uniform spherical granules.

Equipment Components

The disc granulator consists of the following main components:

A – Mounting Base: Supports the entire equipment

B – Mounting Platform: Equipment installation foundation

C – Inclination Adjustment Device: Adjusts the disc inclination angle

D – Support Column: Support structure

E – Support Arm: Supports the disc body

F – Granulating Disc: Core working component

G – Collection Chute: Collects finished granules

H – Scraper Holder: Secures the scraper

I – Scraper Assembly: Cleans the disc surface, prevents material buildup

J – Drive Shaft: Transmits power

K – Motor: Power source

Mounting Base: Supports the entire equipment

Mounting Platform: Equipment installation foundation

Inclination Adjustment Device: Adjusts the disc inclination angle

Support Column: Support structure

Support Arm: Supports the disc body

Granulating Disc: Core working component

Collection Chute: Collects finished granules

Scraper Holder: Secures the scraper

Scraper Assembly: Cleans the disc surface, prevents material buildup

Drive Shaft: Transmits power

Motor: Power source

Working Principle

The OFEC Disc Granulator mimics the natural “snowball” process, transforming organic powders into 1–6 mm spherical granules through wet agglomeration. The entire process consists of three independent yet continuous stages:

1. Nucleation: Dry organic powder is continuously fed onto the inclined rotating disc, while a measured liquid binder (water or organic binder solution) is sprayed through the spray system, forming small seed pellets.

2. Layered Growth: The formed seed pellets enter a continuous “forging” process through the complex motion of the disc, constantly absorbing new powder and being compacted layer by layer as they grow.

3. Automatic Classification: The most distinctive feature of the disc granulator – without additional screening equipment, it automatically separates qualified granules using the difference between particle gravity and centrifugal force.
Key factors affecting granulation performance include: disc diameter, inclination angle, rim height, rotation speed, feed position, and scraper position.

Technical Specifications

Model	Disc Diameter (mm)	Disc Depth (mm)	Speed (r/min)	Capacity (t/h)	Power (kW)	Dimensions (mm)
ZL-800	800	200	21	0.1–0.2	1.5	900×1000×1100
ZL-1200	1200	250	21	0.3–0.5	1.5	1200×1470×1700
ZL-1800	1800	300	21	0.8–1.2	3	2060×1650×2250
ZL-2500	2500	450	14	1.5–2.0	7.5	2900×2000×2750
ZL-3000	3000	450	14	2–4	11	3400×2400×3100
ZL-3600	3600	450	13	4–6	18.5	4100×2900×3800

Model

Disc Diameter (mm)

Disc Depth (mm)

Speed (r/min)

Capacity (t/h)

Power (kW)

Dimensions (mm)

ZL-800

800

200

0.1–0.2

1.5

900×1000×1100

ZL-1200

1200

250

0.3–0.5

1.5

1200×1470×1700

ZL-1800

1800

300

0.8–1.2

3.0

2060×1650×2250

ZL-2500

2500

450

1.5–2.0

7.5

2900×2000×2750

ZL-3000

3000

450

2.0–4.0

11.0

3400×2400×3100

ZL-3600

3600

450

4.0–6.0

18.5

4100×2900×3800

Note: Disc diameters from 0.8 to 5 meters, capacities from 0.1 to 15 t/h. Custom specifications available upon request.

Features and Benefits

High Pelletization Rate

Arc-shaped design achieves a pelletization rate of 90%–95%.

Uniform Granules

Finished pellets are mostly 1–6 mm in diameter with excellent roundness and strong automatic classification capability.

Reasonable Structure

Lightweight design, flexible granulation position adjustment; large disc consists of disc body and disc section, the latter vertically adjustable.

Low Energy Consumption

Unique non-powered scraper system effectively reduces power consumption.

Adjustable Angle

Disc inclination (35°–55°) easily adjustable via shims to suit different organic materials.

High Efficiency

Complete granulation in one pass, low return rate, high production efficiency.

Easy Operation

Intuitive operation, convenient maintenance, stable performance.

Flexible Configuration

Stainless steel and other materials available for different organic feedstock corrosion resistance requirements.

Wide Application Range

Disc diameters from 0.8 to 5 meters – meeting various organic fertilizer production scales.

Applicable Materials

The OFEC Disc Granulator can efficiently agglomerate materials ranging from dry powders to wet sludge-like organic materials. Typical applications include:

Material Category	Typical Examples
Livestock & Poultry Manure	Fermented pig manure, chicken manure, cow manure, sheep manure, etc.
Agricultural Straw	Corn straw, wheat straw, rice straw, etc.
Organic Wastes	Municipal sludge, paper mill sludge, distiller’s grains, sugar filter mud, pharmaceutical residue, fermented food waste, etc.
Other Organic Materials	Peat, biogas residue, humic acid, etc.

Material Category

Typical Examples

Livestock & Poultry Manure

Fermented pig manure, chicken manure, cow manure, sheep manure, etc.

Agricultural Straw

Corn straw, wheat straw, rice straw, etc.

Organic Wastes

Municipal sludge, paper mill sludge, distiller’s grains, sugar filter mud, pharmaceutical residue, fermented food waste, etc.

Other Organic Materials

Peat, biogas residue, humic acid, etc.

Disc Granulator vs. Drum Granulator

Comparison Aspect	Disc Granulator	Drum Granulator
Scale	Small-scale, flexible production (annual output ≤50,000 tons)	Large-scale, continuous operation (annual output ≥100,000 tons)
Single-Unit Capacity	0.5–8 t/h	3–30 t/h
Equipment Investment	Lower	Higher
Operating Cost	Lower – saves 15%–25% energy compared to drum granulator	Higher, but lower unit energy consumption at scale
Material Adaptability	High-moisture, high-viscosity organic materials (fermented organic fertilizer, wet sludge, livestock manure, etc.)	Wide range of organic materials, especially low-moisture feedstocks
Pellet Shape	Spherical, well-rounded, moderate strength	Spherical/oval, higher strength
Operation & Maintenance	Simple, intuitive, easy to maintain	Highly automated – requires trained personnel
Production Flexibility	Very high – quick formula and parameter changes	Lower – suited for long-term fixed products
Environmental Control	Open system	Closed system – easier dust and odor control

Comparison Aspect

Disc Granulator

Drum Granulator

Scale

Small-scale, flexible production (annual output ≤50,000 tons)

Large-scale, continuous operation (annual output ≥100,000 tons)

Single‑Unit Capacity

0.5–8 t/h

1–200 t/h

Equipment Investment

Lower

Higher

Operating Cost

Lower – saves 15%–25% energy compared to drum granulator

Higher, but lower unit energy consumption at scale

Material Adaptability

High-moisture, high-viscosity organic materials (fermented organic fertilizer, wet sludge, livestock manure, etc.)

Wide range of organic materials, especially low-moisture feedstocks

Pellet Shape

Spherical, well‑rounded, moderate strength

Spherical/oval, high strength

Operation & Maintenance

Simple, intuitive, easy to maintain

Highly automated – requires trained personnel

Production Flexibility

High, quick formula and parameter changes

Lower, suited for long‑term fixed products

Environmental Control

Open system, dust control more challenging

Closed system – easier dust and odor control

Resources

Техническое обслуживание Барабанных Грануляторов

Барабанный гранулятор является одним из ключевых оборудований в промышленности сложных

Learn More >

Подробный процесс производства органического удобрения из птичьего помета методом гранулирования в роторном барабане

Переработанный навоз домашнего скота (навоз КРС, овечий помет, куриный помет

Learn More >

Disc Granulator

Product Overview

Equipment Components

Working Principle

Technical Specifications

Features and Benefits

High Pelletization Rate

Uniform Granules

Reasonable Structure

Low Energy Consumption

Adjustable Angle

High Efficiency

Easy Operation

Flexible Configuration

Wide Application Range

Applicable Materials

Disc Granulator vs. Drum Granulator

Resources

Техническое обслуживание Барабанных Грануляторов

Подробный процесс производства органического удобрения из птичьего помета методом гранулирования в роторном барабане

Please leave a message for customized service.