The rotary drum granulator is a key piece of equipment in modern organic and compound biofertilizer production lines. Known for its high efficiency and continuous operation, this machine uses wet granulation technology to turn fine powder materials into uniform, spherical granules. With strong adaptability to various raw materials—such as animal manure, composted organic matter, and NPK compounds—it is widely used in both organic and compound fertilizer industries. Thanks to its robust structure, high output (up to 10 t/h), and granule hardness up to 15–20 N, the rotary drum granulator ensures stable, large-scale production with excellent pellet quality. Welcome to consult!
The basic information about drum granules making machine
The biofertilizer drum granulator is suitable for use in the process of making bio fertilizer. Rotary Granulator belongs to one of the key fertilizer granulating equipment for making biological fertilizer granules. It is applyed to both cold and heat granulation with high, medium and large scale production. It is the machine that helps in the granulation process, which granules organic materials. The drum granulator consists of a rotating drum. It can mix and agglomerate the organic materials with added nutrients and binders to form uniform-sized granules.
What is the working principle of the Drum Pelletizer in biofertilizer production ?
The rotary drum granulator is driven by a motor that rotates a slightly inclined cylindrical shell. Inside the drum, materials experience the combined forces of centrifugal force, gravity, and friction, which cause them to roll in a spiral motion. During this movement, steam or liquid binder is sprayed into the drum through nozzles, moistening the particle surfaces and enhancing adhesion. As fine powders roll and collide, they gradually agglomerate into uniform bio fertilizer granules. Qualified pellets exit through the discharge end, while undersized particles are separated by a screening system and returned for re-granulation, forming a closed-loop process.
Which granulation method the bio fertilizer drum pelletizer adopts?
The rotary drum granulator adopts wet granulation technology, which uses moisture and binder to agglomerate fine materials into uniform bio fertilizer granules.
Compared to dry granulation, wet granulation offers better granule formation and higher particle strength, typically achieving hardness levels of 15–20 N. This can ensure better durability during handling and transportation. At the same time, by customizing the the spray device, you can add liquid microbial agents during the granulation process. This allows for even distribution of beneficial microorganisms, which is essential in biofertilizer production. But pay attention to dry biological fertilizer in a rotary dryer after granulation to improve shelf life and prevent microbial degradation.
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Large capacity ( 1-30 t/h) : The drum pelletizer excels in high – volume production, making it the top choice for large – scale biofertilizer manufacturing. Whether you’re launching a new large – scale biofertilizer production project or upgrading your existing operation, this equipment delivers. It guarantees consistent, high – capacity output, with a production range spanning from 1 to 30 tons.
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Wide range of applications : The drum granulator offers unparalleled versatility, seamlessly adapting to both bio – organic and NPK biofertilizer granulation production lines. This can reduce the cost of bio fertilizer production effectively. At the same time, crafted from durable 304 stainless steel with an inner rubber lining, it has high corrosion resistance, reliable performance. Moreover, you can get different size of biofertilizer pellets by changing the rotation speed of the granulation drum and the angle of the blades.
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93% granulation rate : Besides, the drum pellets making machine has a high granulation rate up to 93% . It ensures that a vast majority of the processed material is successfully formed into high – quality biofertilizer pellets. This high efficiency not only minimizes waste but also guarantees that you produce a consistent, market – ready product.
Buying high-quality biofertilizer drum pelletizer with $5,000-$15,000 from YUSHUNXIN
There are many factors that affect the price of the rotary drum granulator in the biofertilizer production project, including specifications, production capacity, production process and other factors.
Large rotary pelletizer
For fertilizer manufacturers with sufficient funds who want to occupy the biofertilizer market, choosing a large drum granulating machine will be even more powerful. The price of this equipment sold by YUSHUNXIN is $12,000-$15,000. Of course, in addition to this, you can also contact us to customize the drum granulator.
At the same time, you can not only buy the biological fertilizer rotary granulator separately, but also choose to buy the drum bio fertilizer granulation production line. Of course, the cost of the production line will be higher. If you are interested, please contact us. We can customize a suitable biofertilizer production line according to your budget.
| Model | Power(KW) | Diameter(MM) | Length(MM) | Capacity(T/H) |
|---|---|---|---|---|
| SXZGZ-1560 | 11 | 1500 | 6000 | 3-5 |
| SXZGZ-1870 | 15 | 1800 | 7000 | 5-8 |
| SXZGZ-2080 | 18.5 | 2000 | 8000 | 8-15 |
| SXZGZ-3210 | 37 | 3200 | 10000 | 15-30 |
The common FAQ about drum pelletizer in biofertilizer production project
What types of materials can the rotary drum granulator process?
The rotary drum granulator is highly versatile. It is suitable for processing a wide range of raw materials including animal manure, compost, agricultural waste, urea, DAP, potassium sulfate, and other organic or inorganic fertilizers. It is especially ideal for compound fertilizer and bio-organic fertilizer production.
What If My Raw Materials of Making biofertilizer Have Low Stickiness?
Low-viscosity materials often fail to form biofertilizer granules. The rotary drum granulator solves this by allowing the addition of adhesive solutions or steam through spray systems, increasing surface stickiness. The continuous rolling and tumbling motion inside the drum enhances material contact and bonding, enabling even dry powders or coarse compost to granulate effectively.
Is it compatible with automatic fertilizer production lines?
Absolutely. Our rotary drum granulator can be integrated seamlessly with fermentation systems, mixers, screening machines, coating machines, and automatic packing units to form a complete biological fertilizer production line. YUSHUNXIN also provide layout design and full-line support.
The other equipment used in drum granulation production line
While the rotary drum granulator is the core machine for forming uniform biological fertilizer granules, a complete and efficient biofertilizer production line requires additional post-processing equipment to ensure product quality.
Fertilizer Coating Machine
After granulation, not all particles meet the required size specifications. The rotary drum screening machine separates qualified microbial fertilizer granules from oversized and undersized materials. Oversized granules are crushed and recycled, while fines are returned for re-granulation. This process guarantees consistent particle size distribution, a key factor in fertilizer performance and user satisfaction.
Rotary Drum Screening Machine
To further improve the granules’ appearance, moisture resistance, and storage stability, you can use the fertilizer coating machine. This machine applies a uniform layer of anti-caking agent or functional coating material onto the granule surface, preventing clumping during storage and enhancing market competitiveness.
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