How to use double roller granulator to make zeolite pellets

The process of pelletizing zeolite using a double roller granulator is a method favored for its low-energy consumption and absence of the need for drying or additional heat. Zeolites are microporous, aluminosilicate minerals commonly used as commercial adsorbents and catalysts. Here is a detailed guide on how you can use a double roller granulator to produce zeolite pellets.

Introduction to Double Roller Granulation

Understanding the Double Roller Granulator

A double roller granulator is a machine designed for the compacting and granulating of dry powder materials using mechanical pressure applied through two opposing rollers. The machine is widely used in the chemical, pharmaceutical, and food industries, and is particularly suitable for creating granules from materials that do not require a binding agent.

Preparing Zeolite Powder

Sourcing Quality Zeolite

The quality of the zeolite powder is crucial to the success of the granulation process. Source your zeolite from reputable suppliers to ensure it has the desired properties, such as pore size, surface area, and ion-exchange capacity.

Powder Preparation and Blending

Before feeding the zeolite powder into the double roller granulator, ensure it is finely ground and homogenized. If necessary, blend the zeolite powder with other components or additives that may improve the pellet quality or impart additional desired properties.

The Granulation Process

Feeding the Material

The zeolite powder is fed into the hopper of the double roller granulator, where it will be directed between two rotating rollers. The powder should be fed consistently to maintain a uniform flow and ensure consistent pellet size.

Roller Compaction and Granule Formation

As the powder passes through the rollers, it is compacted under high pressure, causing the particles to adhere to each other and form flakes or sheets. These sheets are then milled or broken down into the desired pellet size.

Besides this granulator, we can also offer disc granulation machinery and rotary drum pelletizer machine for you.

Post-Granulation Processing

Sizing and Quality Control

The pellets are then sized to ensure uniformity. Any fines or oversized pellets that are produced can be reprocessed, ensuring minimal waste. Quality control measures should be in place to check the hardness, integrity, and composition of the zeolite pellets.

Optional Coating Process

In some cases, a coating may be applied to the pellets to provide additional benefits such as controlled release of the zeolite’s properties, dust reduction, or to act as a protective barrier against moisture and other environmental factors.

Packaging and Storage

Packaging for Distribution

Once the zeolite pellets have passed quality control, they are packaged in materials that are compatible with zeolite and suitable for transportation. Common packaging options include bags, drums, or super sacks, depending on the quantity and intended use.

Storing Zeolite Pellets

Storage of zeolite pellets should be in a dry, well-ventilated area to maintain their quality. Since zeolites are hygroscopic, they should be protected from exposure to moisture to preserve their adsorptive properties.

Environmental and Safety Considerations

Safety Precautions

Operators of the double roller granulator should adhere to safety guidelines to prevent accidents. Personal protective equipment (PPE) such as gloves, masks, and safety goggles should be worn due to potential dust generation during the granulation process.

Environmental Impact and Disposal

The process of granulating zeolite is environmentally friendly since it does not typically require additional chemicals or solvents. However, any waste material should be disposed of in accordance with local environmental regulations.


The use of a double roller granulator for making zeolite pellets is an efficient and environmentally friendly process. It allows for precise control over pellet size and density, which is essential for the consistent performance of zeolite in its various applications. By following the steps outlined above, manufacturers can ensure high-quality zeolite pellets that meet industry standards and user requirements. And if you want to make zeolite pellets continuously, you can consider setting up a zeolite granulation plant.