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Disc Granulator (Pan Granulator)

Huaqiang disc granulators use a rotating inclined pan to form fertilizer granules through wet agglomeration. The equipment is available in multiple specifications for processing suitable organic fertilizer, compound fertilizer and blended fertilizer materials. Model selection depends on the required output, raw material properties, target granule size and the configuration of the complete production line. Compare the technical specifications below or contact us for equipment selection support......
 
 
 
 
 
Model: ZL-500/ZL-800/ZL-1000/ZL-1200/ZL-1500/ZL-1800/ZL-2000/ZL-2500/ZL-2800/ZL-3000/ZL-3200/ZL-3600      
 
 
 
 
 
Capaticy: 0.05-0.15/ 0.1-0.3/0.1-0.35/0.1-0.35/0.3-1/0.5-1.2/0.5-1.5/1-2.5/2-3/2-3/3-5/3.5-6
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What Is a Disc Granulator?

A disc granulator, also known as a pan granulator, is a machine used to convert prepared powder materials into granules through a wet rolling-agglomeration process.

Its main working component is an inclined rotating disc. Powdered materials enter the disc and move continuously as it rotates. Water or a suitable liquid binder is sprayed onto the material to help fine particles attach to one another.

As the particles roll and collide, small nuclei gradually grow into larger granules. The finished particles move toward the edge of the disc and discharge when they reach the required size and weight.

This forming method is commonly considered for suitable organic fertilizer, compound fertilizer and blended fertilizer formulations.

disc granulator machine

Disc Granulator Machine

How Does a Disc Granulator Work?

The machine forms granules through repeated rolling, wetting and particle adhesion. The operator can adjust the feeding rate, liquid addition and disc angle according to the material and finished product requirements.

  1. Material Feeding

    Prepared and properly mixed powder materials are fed into the inclined rotating disc at a controlled rate.

  2. Liquid Spraying

    Water or a suitable binder is sprayed onto the moving material to create the conditions needed for adhesion.

  3. Particle Nucleation

    Fine particles attach to one another and form small nuclei through repeated rolling and collision.

  4. Granule Growth

    Additional powder adheres to the nuclei, allowing the particles to grow toward the target size.

  5. Discharge

    Formed granules move toward the disc edge and leave the pan for the next processing stage.

  6. Drying

    Wet granules are sent to a drying system when moisture reduction is required by the finished product specification.

  7. Screening

    A screening machine separates qualified granules from oversized and undersized particles.

  8. Material Recycling

    Suitable undersized or oversized material can be returned to the relevant process stage according to the line design.

Process note: Granule formation depends on material composition, particle size, moisture distribution, binder properties and operating conditions. The actual process should be confirmed through material evaluation and production testing.

What Materials Can a Disc Granulator Process?

A disc granulator can process different fertilizer formulations when their physical properties are suitable for wet agglomeration. Material testing is recommended for formulations with uncertain granulation behavior.

  1. Organic Fertilizer Materials

    Prepared organic materials can be considered for disc granulation after fermentation, drying or other necessary pretreatment.

    • Livestock and poultry manure compost
    • Fermented organic materials
    • Crop straw-based materials
    • Spent mushroom substrate
    • Suitable organic soil conditioners
  2. Compound Fertilizer Materials

    Selected compound fertilizer formulations can be granulated after the ingredients have been prepared and mixed.

    • NPK fertilizer mixtures
    • Nitrogen-based fertilizer formulations
    • Phosphate-containing fertilizer mixtures
    • Potassium-containing fertilizer mixtures
    • Suitable blended fertilizers
  3. Other Suitable Materials

    Some mineral-based and industrial powder materials may also be processed if they have suitable agglomeration properties.

    • Selected mineral powders
    • Suitable soil amendment materials
    • Some industrial powder mixtures
    • Other test-confirmed formulations

Material suitability: Not every powder can be processed successfully using the same disc configuration. Moisture content, particle size, viscosity, bulk density and binder requirements should be evaluated before selecting the equipment.

Main Components of a Disc Granulator Machine

The disc, drive system, adjustment mechanism and liquid application assembly work together to support stable material movement and granule formation.

  1. Granulation Disc

    The turning disc provides the working surface for material rolling and agglomeration. As the disc rotates, prepared powder materials move along its inclined surface and gradually form granules. The disc lining material can be selected according to the characteristics of the processed materials.

  2. Scraper Assembly

    The scraper and scraper support are positioned above the rotating disc. The scraper helps remove material adhering to the disc surface and reduces material buildup during operation. Its position and clearance should be adjusted according to operating requirements.

  3. Drive System

    The drive system consists of the motor, speed reducer, belt, belt pulley, motor wheel, connecting flange and transmission shaft. These components transfer power from the motor to the turning disc, providing the rotational force required for granulation.

  4. Supporting and Adjustment Structure

    The base support and movable support provide structural stability for the machine. The push rod works with the movable support to assist in adjusting and securing the disc position. This structure helps maintain the required operating angle and machine stability.

Structural Diagram of A Disc Granulator

How to Choose the Right Disc Granulator

Choosing a suitable disc granulator requires consideration of the raw materials, production capacity, finished granule specifications and installation conditions. The largest model is not necessarily the best choice for every production requirement.

  1. Required Production Capacity

    Determine the target hourly output and expected operating schedule. Use the model capacity range as a reference, then confirm the selection according to the actual material and production conditions.

  2. Raw Material Characteristics

    Evaluate particle size, moisture content, viscosity, bulk density and agglomeration behavior before deciding on the disc granulator configuration.

  3. Finished Granule Requirements

    Confirm the target granule diameter, particle size distribution, strength and appearance. These specifications influence the granulation process and subsequent screening requirements.

  4. Liquid and Binder Requirements

    Determine whether water, a binder or another process liquid is needed. The spray system should provide even liquid distribution to support consistent granule formation.

  5. Installation Space

    Check the machine footprint, feeding height, discharge arrangement, maintenance access and connections with upstream and downstream equipment before installation.

  6. Complete Production Line Capacity

    Ensure that the mixer, granulator, dryer, screening machine and conveyors are properly coordinated. The actual production output depends on the capacity and operating efficiency of the complete processing line.

To recommend a suitable model, provide the raw material type, required capacity, target granule size, moisture condition and available installation space.

Equipment for a Complete Disc Granulation Production Line

A disc granulator is usually integrated with material preparation, mixing, conveying and finished-product handling equipment. The final configuration depends on the fertilizer formulation and required output.

  1. Batching System

    Measures and distributes different raw materials according to the fertilizer formulation. The system configuration depends on raw material types, weighing accuracy, and production capacity.

    Explore Fertilizer Equipment
  2. Crusher

    Reduces oversized material particles to a suitable size before mixing and granulation. Crusher selection depends on material hardness, moisture content, and required particle size.

    Explore Crushing Equipment
  3. Mixer

    Blends prepared materials to improve mixture uniformity before granulation. Mixing performance depends on material characteristics, batch size, and operating conditions.

    Explore Fertilizer Mixers
  4. Disc Granulator

    Forms wet fertilizer granules through rolling and particle adhesion inside the rotating pan. Disc diameter, inclination, and rotational speed should match the material properties and production requirements.

    View Disc Granulator Models
  5. Rotary Dryer

    Reduces moisture in wet granules when drying is required by the finished product specifications. Dryer capacity depends on feed moisture, processing volume, and target moisture content.

    Explore Drying Equipment
  6. Screening Machine

    Separates qualified granules from oversized and undersized particles to maintain consistent product size. Screen selection depends on the target particle size range and processing capacity.

    Explore Screening Equipment
  7. Conveyor

    Transfers raw materials and granules between different processing stages. Conveyor type and configuration depend on material characteristics, conveying distance, and production layout.

    Explore Conveying Equipment
  8. Packaging Machine

    Weighs and packs qualified finished fertilizer granules according to the required bag weight. Packaging equipment should match the production rate, bag specifications, and weighing requirements.

    Explore Packaging Equipment
  9. Auxiliary Equipment

    Includes storage, dust collection, coating, and other supporting equipment when required by the production process. The configuration depends on plant layout, environmental requirements, and finished product specifications.

    View Disc Granulation Production Line

Organic Fertilizer Disc Granulation Line

An organic fertilizer production line may include fermentation or compost preparation, crushing, batching, mixing, disc granulation, drying, screening and packaging.

The actual equipment arrangement depends on the condition of the organic material before granulation, especially moisture content and particle size.

View Organic Fertilizer Disc Granulation Line
disc granulation production line

disc granulation production line

The equipment list is a typical process reference, not a fixed configuration. Some projects may not require every machine listed above. Confirm the process according to the raw material, target output, site conditions and finished product requirements.

What Affects the Price of a Disc Granulator?

The price of a disc granulator depends on the selected model, manufacturing specifications and project requirements. A complete production line quotation also includes supporting equipment and installation scope.

  • Equipment Size and Capacity

    Disc diameter, side height and required processing capacity affect the machine configuration.

  • Material and Lining

    Disc material, lining type, wear protection and fabrication requirements can influence cost.

  • Drive System

    Motor power, reducer specifications and transmission components affect the equipment setup.

  • Spray and Scraper System

    Liquid application and scraper configurations should match the properties of the feed material.

  • Auxiliary Equipment

    Conveyors, mixers, dryers, screening machines and packaging equipment affect total project cost.

  • Installation and Project Scope

    Electrical requirements, shipping, installation, commissioning and technical support should be included in the project evaluation.

Frequently Asked Questions About Disc Granulators

1.What is a disc granulator used for?

A disc granulator is used to form powder materials into granules through wet agglomeration. It is commonly considered for suitable organic fertilizer, compound fertilizer and blended fertilizer production.

2.What is the difference between a disc granulator and a pan granulator?

The terms generally refer to the same type of equipment. Both describe a granulation machine that uses an inclined, rotating pan to form particles through rolling and adhesion.

3.What is the production capacity of a disc granulator?

The listed ZL series models cover nominal capacities from 0.05 to 6 tons per hour. Actual output depends on the material, formulation, moisture content and operating conditions. Confirm the expected capacity for your specific material before selecting a model.

4.What materials can be processed by a disc granulator?

Suitable materials may include prepared organic fertilizer materials, compound fertilizer mixtures and selected mineral-based powders. Material properties should be evaluated before confirming equipment suitability.

5.Does a disc granulator require water or a binder?

Wet disc granulation generally requires liquid addition to help particles adhere. The liquid type and amount depend on the raw material and formulation.

6.Does a disc granulator need a dryer?

A dryer is commonly used when the moisture content of discharged granules is higher than the required finished product specification. The need for drying should be determined by the process and product requirements.

7.What is the difference between a disc granulator and a rotary drum granulator?

Both machines can use wet agglomeration, but their material movement and equipment structures are different. A disc granulator forms particles in an inclined rotating pan, while a rotary drum granulator uses a rotating cylindrical drum.

8.How do I choose the right disc granulator model?

Consider the required hourly output, raw material properties, target granule size, moisture conditions, installation space and supporting equipment. The selected model should be confirmed against the actual production process.

9.Can a disc granulator be used in an organic fertilizer production line?

Yes. It can be used as the granulation unit in a suitable organic fertilizer production line. The process may include material preparation, mixing, granulation, drying, screening and packaging.

10.What information is needed to get a disc granulator quotation?

Provide the raw material type, required production capacity, target granule size, material moisture condition, power supply and installation location. Photos or a material sample can also help with preliminary equipment evaluation.

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Parameters
Model Capacity(t/h) Diameter(mm) Side Height(mm) Rotation Speed(r/min) Motor Power(Kw)
ZL-500 0.05-0.15 500 150 25 1.5
ZL-800 0.1-0.3 800 200 25 1.5
ZL-1000 0.1-0.35 1000 250 25 2.2
ZL-1200 0.1-0.35 1200 250 25 3
ZL-1500 0.3-1 1500 300 18 3
ZL-1800 0.5-1.2 1800 350 18 4
ZL-2000 0.5-1.5 2000 400 18 5.5
ZL-2500 1-2.5 2500 400 13.6 7.5
ZL-2800 2-3 2800 500 13.6 11
ZL-3000 2-3 3000 500 11 11
ZL-3200 3-5 3200 500 10 11
ZL-3600 3.5-6 3600 500 10 18.5
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