Disc Granulator (Pan Granulator)

DETAILS

The disc granulator (also known as a pan granulator) is a piece of equipment designed to agglomerate and granulate powdery or granular materials through the action of a rotating disc. It is widely used in the granulation of organic fertilizers, compound fertilizers, animal feed, chemical raw materials, and other substances.

With years of expertise in the R&D and manufacturing of granulation equipment, Huaqiang Heavy Industry has launched an enhanced, heavy-duty disc granulator. This model features comprehensive upgrades in materials, structural design, and manufacturing processes, making it suitable for granulating a wide range of organic fertilizer raw materials. The disc body is formed from a single piece of thickened, high-quality steel plate and reinforced at the bottom with multiple radial steel ribs, ensuring exceptional structural rigidity and load-bearing capacity.

What is the working principle of the disc granulator?

The disc granulator consists of a large disc, a large gear, a drive assembly, a frame, a base, a scraper holder, and a non-powered scraper. Its working principle is as follows: the main motor drives a pulley and belt, which transmit power through a speed reducer to a small gear; this small gear meshes with a large gear fixed to the bottom of the disc, causing the granulation disc to rotate. Once the material enters the granulation disc, it moves in a spiral upward and tumbling motion along the disc wall, driven by the combined forces of centrifugal force, friction, and gravity. As a binding agent (such as water or slurry) is sprayed, the material particles rub against, compress, and adhere to one another, gradually agglomerating into spheres. Continuous batch production is achieved through the constant rotation of the disc and the continuous feeding of material.

The equipment’s inclination angle can be precisely adjusted between 30° and 60°, and the rotation speed can be controlled as required; particle size and sphericity can be flexibly regulated by adjusting parameters such as the disc’s inclination angle and rotation speed.

Applications of the Disc Granulator

The disc granulator is widely used for granulating powdery materials across various industries:

Fertilizer industry: Production of spherical granules such as organic fertilizer, compound fertilizer, bio-organic fertilizer, and blended fertilizer.

Chemical industry: Granulation of materials including chemical raw materials and fertilizers.

Mining sector: Pelletizing of powdery materials such as coal dust, cement, clinker, and iron ore fines.

Other industries: Pharmaceuticals, food processing, ceramics, iron and steel, animal feed, etc.

The equipment handles powders with a moisture content of ≤15% and is compatible with a wide range of complex organic fertilizer raw materials, including high-moisture manure/sludge, humic acid, straw powder, and microbial fertilizers.

What are the advantages of using a disc granulator?

High granulation rate: Achieves a rate of 93%–95%; produces round, uniform granules with a flexibly adjustable diameter of 2–6mm.

Robust structure: Features a thickened steel disc body with radial reinforcing ribs, an anti-corrosive fiberglass lining, and quenched main gears for significantly extended service life.

Smooth operation: Utilizes a flexible belt drive for shock absorption, resulting in low noise and minimal malfunctions; operates stably without the need for anchor bolts.

Convenient operation: Equipped with multiple automatic scrapers to clean the disc surface and three discharge outlets for flexible production; features a compact design with a small footprint and requires no complex foundation.

Energy-efficient and economical: Granulates at ambient temperature in a single pass; investment costs are over 40% lower than extrusion equipment; offers simple maintenance and quick returns.

What equipment makes up a production line featuring a disc granulator?

The disc granulator is the core granulation equipment in organic and compound fertilizer production lines. It is typically paired with the following equipment to form a complete fertilizer production line:

Fermentation compost turner—for the fermentation of organic raw materials

Crusher—to reduce large material chunks to the appropriate particle size

Batching system—for precise, automated ingredient proportioning

Mixer—to blend materials and additives evenly and adjust moisture content

Disc granulator—the core granulation equipment

Dryer—to dry the granulated particles

Cooler—to lower particle temperature for easier storage

Screening machine—to separate finished products from substandard ones

Automatic packaging machine—for packaging the finished product

The equipment units are connected by belt conveyors, creating a continuous, automated production line. Huaqiang Heavy Industry offers designs and complete equipment sets for organic fertilizer production lines with annual capacities ranging from 10,000 to 500,000 tons.

Why Choose Huaqiang Disc Granulators?

Direct Manufacturer with Significant Price Advantages

Huaqiang Heavy Industry is a specialized manufacturer of organic fertilizer equipment. By eliminating middlemen, we offer competitive pricing; all disc granulators are available as ready-to-ship stock, with customization options for specifications and dimensions.

Reliable Quality and Durability

The disc body is formed from a single piece of thickened, high-quality steel, featuring a wear-resistant, anti-corrosive lining that significantly reduces material abrasion. Both the motor and gearbox are ISO 9001 certified, ensuring dependable performance.

Leading Technology and High Granulation Rate

The equipment features an integrated arc-shaped disc design combined with an adjustable tilt angle and variable-frequency speed control, achieving a stable pelletizing rate of over 93%. It is a recognized product and a promoted technology for environmental protection in my country.

Comprehensive, One-Stop Service

Huaqiang Heavy Industry provides end-to-end services, including site surveys, production line layout, equipment installation and commissioning, technical training, and after-sales support. We supply complete organic fertilizer production line equipment and can design lines with annual capacities ranging from 10,000 to 500,000 tons based on client requirements.

Versatile Application and Flexible Selection

Equipment specifications cater to diverse production needs, with small models offering an hourly output of 1–3 tons and medium models producing 3–10 tons per hour. They are compatible with various complex organic fertilizer raw materials, such as high-moisture manure, humic acid, straw powder, and microbial fertilizers. The equipment features a high degree of automation, allowing for single-operator control, and is easy for beginners to master with minimal training.

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