Disc Granulator (Pan Granulator)

The Versatile Choice for Flexible, Batch or Continuous Production of Premium Spherical Granules

The Disc Granulator, also known as a Pan Granulator, is a highly efficient and visually controllable granulation system. Utilizing an inclined rotating disc, it creates perfectly spherical granules through a cascading and rolling motion. Renowned for its operational flexibility, ease of adjustment, and compact design, it is ideal for medium-scale production, pilot plants, and applications requiring frequent formula changes or superior granule sphericity.

Key Features

  • Inclined Rotating Disc

    The core component, with an adjustable angle (typically 35-60°), dictates the material's tumbling path and retention time.

  • Visual Process Control

    The open design allows operators to directly observe the granulation process, enabling real-time adjustments for optimal results.

  • Adjustable Parameters

    Granule size is easily controlled by varying disc angle, rotation speed, binder spray rate, and feed location.

  • Scraper Assembly

    An internal scraper ensures material does not adhere to the disc bottom, maintaining efficient operation.

  • Robust Support Structure

    Includes a heavy-duty base, central drive shaft, and often a gear and motor system for smooth rotation.

Advantages

  • Superior Granule Shape

    Produces the most uniform and spherical granules of any method, enhancing product appearance and fluidity.

  • Operational Flexibility

    Excellent for batch production, multi-product lines, or R&D due to quick cleanup and parameter changes.

  • High Granulation Rate

    Achieves a high yield of on-size granules with a low recycle rate of fines, improving overall efficiency.

  • Low Power Consumption

    Simple rotational movement requires less energy compared to high-pressure or large rotary drum systems.

  • Ease of Maintenance

    Straightforward mechanical design and easy access to the disc and scrapers simplify upkeep.

Applicable Raw Materials

  • NPK Powder Blends

    Excellent for compound fertilizers where precise nutrient distribution is needed.

  • Ammonium Salts & Urea

    With appropriate binding agents.

  • Organic & Bio-Fertilizer Mixes

    Compost, peat, and blended organic materials where gentle agglomeration is key.

  • Limestone, Gypsum & Soil Amendments

    For producing uniform prills.

  • Industrial Powders

    Such as ores, chemicals, and pigments where granulation is required.

Basic Structure & Components

Disc Granulator
Granulation Disc

The main, shallow, inclined rotating pan, often with a reinforced steel frame and wear-resistant lining.

Disc Support & Drive Assembly

Includes the central shaft, thrust bearing, gear reducer, and motor.

Angle Adjustment Mechanism

Allows precise setting of the disc’s inclination (manually or hydraulically).

Scraper System

One or multiple scrapers mounted to prevent material buildup on the disc.

Feed Hopper & Conveyor

Consistently delivers pre-mixed material to the disc.

Liquid Binder Spray System

Pipes and nozzles for uniformly applying binder (water, slurry, or steam) onto the bed of material.

Discharge Chute

Guides finished granules off the disc as they overflow the rim.

Base Frame & Guards

Provides stability and operational safety.

Technical Data

Specification mm

Production Capacity t/h

Rev r/min

Motor

Model

Power

φ2.2

2.5-3

13.3

Y132M-4

7.5

φ2.5

3-5

13.3

Y132M-4

7.5

φ3.0

4.5

11

Y160M-4

11

φ3.2

10

11.2

Y160M-4

11

φ3.6

12

11.2

Y180M-4

11

φ4.2

16

14.75

Y200L-4

30

φ5.0

15-25

8.3

Y225M-4

45

φ5.5

35-46

7.1

Y280M-4

90

φ6.0

45-60

7.1

Y280M-4

90

Key Differentiators vs. Other Granulators

Offers visual process control and easier size adjustment but generally has a lower continuous capacity. The disc is more open, while the drum is enclosed, making the disc better for flexible or batch production.

Produces smooth, spherical granules via agglomeration rather than dense, cylindrical pellets via compaction. It requires moisture/binders for growth, unlike the dry extrusion process.

Is a pure granulator for moist powders and requires a separate dryer. It cannot handle liquid slurries directly but offers superior granule shape control for its applicable materials.

Specializes in producing uniform spheres from a rolling action, whereas the gear shaping unit molds material into specific, often non-spherical shapes using pressure from intermeshing gears.