Rotary Drum Granulators
Granulation Drums Designed for your Granulation/Agglomeration Process
Our Rotary drum granulators are manufactured with quality and safety in mind. Each drum is built by our team of engineers, designers, and craftsman who together have more than 300 years of experience in granulation technology. In addition, our on-site laboratory and pilot plant equipment and facilities produce the data needed to design and size your rotating granulator for your own process.
We understand that your rotary drum granulator/agglomerator may require specialized internals. We have the experience and expertise to help you with the special internals that your process needs. We also build granulation drums that perform functions in addition to granulation such as drying, classifying, and coating. In addition to the rotary drum itself, we design granulation systems that may include air handling, product screening and recycle, drying, and more.
Materials of Construction: Carbon Steel, Stainless Steel, and Specialty Alloys
Diameters: 1 foot to 14 foot diameter
Lengths: Up to 60 feet (single segment), Up to 150 feet (multiple segments)
Air Handling/ Emissions Control Systems Available:
- Combination of the Above
Benefits of an ACT Rotary Drum
- Quality Tested
- Backed by Years of Experience in Rotary Drum Engineering, Design, and Fabrication
- Proven Customer Service
- Customizable for Your Process
- On-site Laboratory and Pilot Testing
- Built with Safety in Mind
Some Typical Types of Rotary Drum Granulation
- Wet Granulation/Agglomeration
- Melt Spray Granulation
- Falling Curtain Granulation
- Steam/Water Granulation
- Ammoniation Granulation
ACT Standard Rotary Drum Granulators Include the Following:
- Shell Thicknesses Up to 1 1/2"
- Drive System Built for Your Application and Preference
- Optional Internals
- Lifting Flights
- Mixing Flights
- Spiral Flights
- Anti-slip Flights
- Bed Shaping Flights
- Collection Pans
- Liquid/Solid/Slurry/Gas Distribution Systems
- Scrapers - Reciprocating Scraper Bars
- Beater Bars
- Spray Systems- Air Atomized
- Heating/Cooling Systems
- We Provide On-site Precision Alignment for Every Drum We Sell
- Unitized Base or Two Tier Design
- Modular or Complete System Designs
- Easy Operation and Clean Up
How Does A Rotary Drum Granulator Work?
In a rotary drum granulator, a fine material or powder is bound together to form larger particles/granules. This is accomplished as the powder in the bed of the rotary drum granulator is tumbled due to the rotation of the drum.
Tumbling alone is typically not enough to produce granulation. Other additives are often necessary to bind the particles together. For example, in wet granulation/agglomeration either water or a soluble binder is used to produce a final granule that maintains its strength after drying. For melt spray granulation, a solid is melted and sprayed onto the bed or a curtain of the seed material being granulated. Reactants can also be used as is the case for ammoniation granulation.
In addition to the use of additives, sprays, or reactants; a rotary granulator often includes special flight internals, lifts, or plows. These provide additional mixing, drying, and/or cooling needed to form the granule or agglomerate.