Top 10 Hot Types of Granulator From China

A granulator is a mechanical device that transform powdered or fine particulate raw materials into granular products with specific shapes, sizes, and densities through specialized processes and equipment. Granulators are widely used in various industries such as chemical, pharmaceutical, and food. Below, we detail 10 hot types of granulation equipment.

1. Extrusion Granulator

Extrusion granulator is a device that processes raw materials into granules through extrusion. It mainly consists of a hopper, a screw, an extrusion die, and a cutting blade. The raw material is pushed by the screw, passes through the forming hole of the extrusion mold, and is cut into particles of a certain length by the cutter.

Extrusion granulator is mainly suitable for granulation of coarse fibers, such as sawdust, rice husks, cotton stalks, cottonseed hulls, weeds and other crop straw, household waste and factory waste, as well as granulation, molding and rod making of materials with low adhesion rates that are difficult to form. It is also used for low-temperature granulation of bio-bacterial fertilizers, organic fertilizers, and compound fertilizers.

2. Drum Granulator

A drum granulator is a device that forms raw materials into spherical granules through the rotation of a drum and the action of internal lifters. It mainly consists of a drum, lifters, transmission device, and heating device. The raw material is gradually formed into spherical granules under the stirring of the lifters and the rotation of the drum.
The drum granulator is suitable for powdered or fine granular raw materials, such as fertilizers, mineral powder, etc. It can be produced on a large scale and operated continuously, making it widely used in industrial production.

3. Spray Drying Granulator

The spray drying granulator atomizes the raw material solution into small droplets through a sprayer, which then contact hot air in the drying chamber to dry and shrink into granules. It mainly consists of a sprayer, drying chamber, hot air device, and collection device. The spray drying granulator is simple to operate, produces good particle morphology, and generates minimal dust.

Spray drying granulator is applicable to heat sensitive raw materials or raw materials that need rapid drying, such as food, medicine, etc.

4. Fluidized Bed Granulator

Fluidized bed granulator is a device that uses airflow to suspend raw material powder in a fluidized bed, and sprays adhesive into the fluidized bed through a spraying device to bond the powder into particles. It mainly consists of a fluidized bed, a liquid spraying device, a hot air device, and a collection device.
Fluidized bed granulator is suitable for loose and difficult to agglomerate raw material powders, such as pesticides, dyes, etc.

5. Disc Granulator

A disc granulator is a disc-shaped granulating equipment that transforms a certain fineness of powdered material into spherical material that meets the requirements of the next process. During its operation, the granulation material is placed in a tilted and rotating disc, which is subjected to the combined effects of gravity, centrifugal force, and friction to produce finished spherical particles that meet the requirements and are discharged from the disc edge. It is also commonly called a pan granulator or disc pelletizer.

The disc granulator mainly uses powder homogeneous materials with good adhesion for rolling ball granulation, such as feed, fertilizer, food, etc.

6. Swing Granulator

Swing granulator is a device used to grind wet powder or block shaped dry materials into the required granules. The swing granulator can effectively granulate, pulverize, crush dry materials, and promote rapid granulation. The oscillation motion of the drum driven by mechanical force squeezes out the granules through the sieve, ensuring uniform particle formation.

Swing granulator is widely used in pharmaceuticals, food, and chemical industries for granulation, crushing, and sizing.

7. Tablet Granulator

The tablet granulator is mainly used to convert powdered materials into particles with a certain shape, size, and density through physical pressing and granulation processes, which do not require the addition of liquid binders. The tablet granulator usually adopts the stamping forming method, which applies pressure to the powder material through the mold to tightly bond and form particles. Its core components include stamping dies, pressure wheels, and feeding mechanisms.

The application of tablet granulators is particularly widespread in the pharmaceutical industry.. In addition, in the chemical and food industries, tablet granulators are also commonly used to prepare granular products such as catalysts, fertilizers, seasonings, etc.

8. Roller Granulator

A roller granulator is a device that compresses materials into particles through two relatively rotating rollers. Dense cake material is formed by squeezing dry powder material with double rollers, and then crushed and screened to produce particles. The binding force between particles comes from molecular forces such as van der Waals force, adsorption force, crystal bridge, and embedded connection, without the need for adhesive. It belongs to the dry granulation process.

The advantages of roller granulator include uniform, high-strength granules. But it has lower output and higher material adhesion requirements.

9. Centrifugal Granulator

A centrifugal granulator is a device that uses centrifugal force to eject materials and form particles. The centrifugal granulator achieves powder deposition and granulation through the centrifugal force of a turntable and the buoyancy of gas.

The advantage of a centrifugal granulator is that the particle size is uniform, making it suitable for producing pellets, coated formulations, and granular materials.. The disadvantage is that the equipment has a large volume and high energy consumption.

10. Mixing Granulator

A mixing granulator consists of a mixing chamber, a stirring device, a granulation device, a transmission system, a control system, and other parts. Mixing Granulator integrates mixing and granulation, reducing production cycles and costs. It ensures uniform mixing and stable particle properties through wet or dry granulation, depending on material characteristics.

Mixing granulator is widely used in the pharmaceutical, food, chemical and feed industry.