Ring Die Pellet Machine
A ring die pellet machine is a highly efficient pelletizing device widely used in various industries, especially large-scale feed mills, biomass fuel plants, organic fertilizer production lines, and cat litter pellet production lines.
Compared to flat die pellet machines, ring die pellet machines offer significant advantages such as higher output, lower energy consumption, and longer die life, making them particularly suitable for continuous, large-scale industrial production.
What is the ring die pellet machine?
A ring die pellet machine is a multi-functional, high-efficiency pelletizing device that compresses various powdery raw materials into dense, uniform, and durable pellets. Unlike traditional flat die pellet machines, ring die pellet machines use a circular die with an internal hole and rotating pressure rollers to continuously extrude materials under high pressure, achieving high-efficiency, automated, and large-scale pellet production.
This equipment is one of the core pieces of equipment in a modern pellet production line, suitable for pelleting various materials, including animal feed ingredients, biomass fuels, organic fertilizers, and cat litter base materials. It can compress loose or fibrous powders into dense cylindrical pellets, thereby significantly improving raw material utilization, transportation convenience, storage stability, and overall economic value.
The ring die pellet machine utilizes high-precision components and a heavy-duty steel structure, combined with advanced processing technology, ensuring the stability and energy efficiency of the equipment during long-term continuous production. Its capacity ranges from 1 ton/hour to 40 tons/hour, and the pellet diameter can be flexibly customized from 2mm to 12mm depending on the type of raw material and application requirements.
In summary, it is not only an indispensable core piece of equipment in the feed industry but also a flexible production solution for industries such as biomass fuel, organic fertilizer, and cat litter, helping companies achieve efficient, sustainable, and diversified production and return on investment.
With its multi-functional design and high adaptability, this equipment can provide customers with efficient, reliable, and environmentally friendly pelleting solutions in multiple industries.
How does the ring die pellet machine work?
The core principle of a ring die pellet machine is to compress loose, powdery or fibrous raw materials into dense, uniform pellets using mechanical pressure and heat. The entire pelleting process is mainly completed in three key structures: the conditioner, the pelleting chamber, and the cutting system.
The raw material first enters the conditioner, where it is thoroughly mixed with steam or hot air to achieve suitable humidity and temperature. This step softens the material, enhances its binding force, and provides ideal forming conditions for subsequent pressing processes.
Next, the conditioned material enters the pelleting chamber. This part consists of a rotating ring die and one or more sets of pressure rollers. As the pressure rollers rotate, the material is forcefully pressed into the ring die holes. Under high pressure and friction, moderate heat is generated, causing the natural binding components in the material (such as lignin in biomass raw materials or starch in feed raw materials) to melt and act as a binder, thereby forming dense cylindrical pellets.
After being extruded from the die holes, the material is cut into pellets of uniform length by a rotating cutter. The pellets are then discharged directly from the outlet and can proceed to subsequent cooling, screening, or packaging stages, completing the entire pelleting process.
This equipment provides continuous and efficient granulation, producing particles with uniform density and smooth surfaces. Furthermore, the gap between the pressure rollers, the die aperture, and the compression ratio are all flexibly adjustable to adapt to different raw materials and production needs.
Customized Ring Die Pellet Machines for Different Needs
Our ring die pellet machines are designed to handle a wide range of raw materials and cater to different types of animals, from poultry and livestock to aquatic species. Whether you are producing feed from corn, soybean, straw, or other raw materials, we provide specialized equipment that ensures high efficiency, uniform pellet quality, and reliable performance. Explore our diverse solutions to find the perfect match for your production needs.
The machines highlighted above represent just a portion of our comprehensive offerings. In addition to these, we provide a wide variety of ring die pellet machines tailored to different production capacities, raw materials, and animal types. Each model is designed with precision and reliability in mind, ensuring consistent pellet quality and optimal efficiency.
Video Showcase of ring die pellet machine
To help customers intuitively understand the equipment’s performance and structural design, we have prepared demonstration videos. These videos not only showcase the machine’s overall structure, stainless steel body, and feeding system in detail, but also clearly demonstrate the entire process of raw materials being conditioned, pressed, and formed into pellets. Through these two videos, you can clearly see that the equipment operates smoothly, has high pelleting efficiency, and produces uniform pellet quality, making it an ideal choice for various pellet production lines.
Different Technical Parameters of Ring Die Pellet Machine
Technical parameters of a ring die pellet machine are crucial indicators for evaluating its performance, production capacity, and applicability. These primarily include output, main motor power, ring die diameter, and pellet diameter range.
RICHI offers various models, ranging from small to ultra-large configurations. Single-unit capacity ranges from 1 ton/hour to 40 tons/hour, fully meeting the personalized production needs of customers of different sizes. Each model undergoes precise design and rigorous testing, achieving optimal configuration in terms of stability, production efficiency, and adaptability, providing users with an ideal choice for high-reliability and high-quality pellet production.
Ring Die Feed Pellet Machine
| Model | SZLH250 | SZLH320 | SZLH350 | SZLH420 | SZLH508 | SZLH558 | SZLH678 | SZLH768 |
| Main Motor Power (kW) | 22 | 37 | 55 | 110 | 160 | 185 | 250 | 315 |
| Feeder Power (kW) | 1.1 | 1.5 | 1.5 | 1.5 | 1.5 | 1.5 | 1.5 | 2.2 |
| Modulator Power (kW) | 1.5 | 4 | 4 | 7.5 | 7.5 | 11 | 11 | 11 |
| Ring Die Inner Diameter (mm) | 250 | 320 | 350 | 420 | 508 | 558 | 673 | 762 |
| Finished Pellet Diameter (mm) | 2~12 | |||||||
| Output (T/H) | 1.0-1.5 | 3-4 | 5-6 | 10-12 | 15-16 | 20-22 | 30-33 | 38-40 |
Ring Die Pellet Machine For Wood Pellet
| Model | MZLH320 | MZLH350 | MZLH420 | MZLH520 | MZLH678 | MZLH768 |
| Main Motor Power (kW) | 22 | 37 | 90 | 132 | 185 | 250 |
| Arch-Breaking Feeder Power (kW) | 2.2 | 2.2 | 3 | 3 | 3 | 4 |
| Forced Feeder Power (kW) | 0.75 | 0.75 | 1.5 | 1.5 | 1.5 | 1.5 |
| Ring Die Inner Diameter (mm) | 320 | 350 | 420 | 520 | 673 | 762 |
| Finished Pellet Diameter (mm) | 4~12 | |||||
| Output (T/H) | 0.2-0.3 | 0.3-0.5 | 1.0-1.2 | 1.5-2.0 | 2.5-3.0 | 3.0-4.0 |
Ring Die Pellet Machine For Grass Pellet
| Model | CZLH320 | CZLH350 | CZLH420 | CZLH520 | CZLH678 | CZLH768 |
| Main Motor Power (kW) | 22 | 37 | 90 | 132 | 185 | 250 |
| Arch-Breaking Feeder Power (kW) | 2.2 | 2.2 | 3 | 3 | 3 | 4 |
| Forced Feeder Power (kW) | 0.75 | 0.75 | 1.5 | 1.5 | 1.5 | 1.5 |
| Ring Die Inner Diameter (mm) | 320 | 350 | 420 | 520 | 673 | 762 |
| Finished Pellet Diameter (mm) | 4~12 | |||||
| Output (T/H) | 0.5-0.6 | 1.0-1.2 | 1.8-2.0 | 2.8-3.0 | 4.0-5.0 | 6.0-8.0 |
Ring Die Pellet Machine For Cat Litter Pellet
| Model | MSZLH250 | MSZLH320 | MSZLH350 | MSZLH420 | MSZLH508 | MSZLH558 | MSZLH678 | MSZLH768 |
| Main Motor Power (kW) | 22 | 37 | 55 | 110 | 160 | 185 | 250 | 315 |
| Feeder Power (kW) | 1.1 | 1.5 | 1.5 | 1.5 | 1.5 | 1.5 | 1.5 | 2.2 |
| Modulator Power (kW) | 1.5 | 4 | 4 | 7.5 | 7.5 | 11 | 11 | 11 |
| Ring Die Inner Diameter (mm) | 250 | 320 | 350 | 420 | 508 | 558 | 673 | 762 |
| Finished Pellet Diameter (mm) | 2~12 | |||||||
| Output (T/H) | 1.0-1.5 | 3.0-4.0 | 5.0-6.0 | 10-12 | 15-16 | 20-22 | 30-33 | 38-40 |
Ring Die Pellet Machine For Organic Fertilizer Pellet
| Model | FZLH250 | FZLH320 | FZLH350 | FZLH420 | FZLH520 | FZLH678 | FZLH768 |
| Main Motor Power (kW) | 22 | 22 | 37 | 90 | 132 | 185 | 250 |
| Arch-Breaking Feeder Power (kW) | 2.2 | 2.2 | 2.2 | 3 | 3 | 3 | 4 |
| Forced Feeder Power (kW) | 0.75 | 0.75 | 0.75 | 1.5 | 1.5 | 1.5 | 1.5 |
| Ring Die Inner Diameter (mm) | 250 | 320 | 350 | 420 | 520 | 673 | 762 |
| Finished Pellet Diameter (mm) | 4~12 | ||||||
| Output (T/H) | 1-1.5 | 2.0-3.0 | 3.0-5.0 | 6.0-8.0 | 9-12 | 18-22 | 22-26 |
structural characteristics of ring die pellet mill
The RICHI SZLH series ring die pellet machine boasts significant advantages in equipment structure, material selection, core components, and operational performance, providing a stable and reliable solution for feed pellet production. Its design prioritizes high output, high efficiency, low energy consumption, and long service life, ensuring consistent pellet quality across different feed types and production scales.
High-Quality Stainless Steel Structure
Key components are made of 304 stainless steel, offering superior oxidation resistance and structural strength compared to the 201 stainless steel used by some manufacturers. The outer shell utilizes an embossed stainless steel finish, enhancing both aesthetics and durability while improving wear resistance and rigidity. This high-quality structure ensures stable performance even under prolonged high-load operation. Furthermore, the reinforced frame design enhances reliability during long-term high-speed operation.
Variable Frequency Feeding System
Equipped with a variable frequency feeding device, the machine automatically adjusts the feeding speed based on the main motor load, ensuring uniform material entry into the pelleting chamber, maximizing output, and protecting the motor from overload. This system is compatible with forced feeding devices and is particularly suitable for lightweight, loose, or easily dispersed materials such as forage, shells, and fruit peels, ensuring continuous and stable feeding and improving pelleting efficiency.
High-Precision Ring Die with Uniform Compression Ratio
The ring die is manufactured using advanced CNC machining and vacuum heat treatment technology to ensure exceptional dimensional accuracy and surface smoothness. Each die hole features a carefully calculated compression ratio tailored to specific materials, whether producing animal feed, biomass pellets, or cat litter. This precision engineering ensures uniform pellet density, high forming rate, reduced wear on rollers and dies, and overall lower production costs.
International-Standard Core Components
The main motor is a Siemens brand, supporting four, six, or eight power settings. The transmission system is compact and smooth. The pressure rollers are made of 40CrMnTi steel, and the eccentric shaft structure allows for precise adjustment of the distance between the ring die and the pressure rollers. The equipment is also equipped with a quick die-changing system to improve production efficiency. Advanced core components ensure reliable operation, stable pellet density, and high output.
Different Ring Die Pellet Machine In Global Projects
For over 30 years, RICHI Machinery has successfully delivered hundreds of pellet processing projects in more than 140 countries and regions worldwide, spanning Asia, Africa, Europe, and South America. These projects involve various application fields including animal feed production, biomass fuel pellets, organic fertilizer pellets, and cat litter granulation. Each project is carefully customized based on the client’s raw materials, desired pellet size, and capacity requirements, ensuring stable performance and long-term economic benefits.
ring die pellet machine For Sale canada
- Project Output: 2T/H
- Project Country: Canada
- Raw Materials: 70% sawdust, 20% wood shavings, 10% bark powder
- Project Background: This 2–3T/H wood pellet production line is located in Canada, a country rich in forest resources. The client operates a medium-sized wood processing plant and wanted to utilize wood waste, such as sawdust and shavings, to produce biomass fuel pellets for both domestic heating and export to Europe.
The production line is equipped with a ring die pellet machine, rotary dryer, pellet cooler machine, and automatic packaging machine, achieving stable operation and continuous production. The project effectively turns waste into profit, reducing environmental pollution while generating sustainable economic value.
ring die pellet machine for feed In Senegal
- Project Output: 3-5T/H
- Project Country: Senegal
- Raw Materials: 40% Corn, 20% Peanut Meal, 15% Rice Bran, 10% Fish Meal, 10% Wheat Bran, 5% Premix & Additives
- Project Background: Located in Dakar, Senegal, this poultry feed project supports the rapidly growing chicken farming industry. The client previously relied on imported feeds with high costs and unstable quality. RICHI supplied a 3–5T/H poultry feed pellet plant with a hammer mill, poultry feed mixer machine, pellet machine, rotary screener, and automatic packaging system, achieving continuous and efficient production.
ring die pellet machine For Sale malaysia
- Project Output: 2T/H
- Project Country: Malaysia
- Raw Materials: 60% sawdust, 25% tofu residue, 10% corn starch, 5% water and additives
- Project Background: The client specializes in pet product manufacturing and decided to expand their business by investing a 2T/H cat litter production line in Malaysia. The pellet machine customized for fine powder materials, with enhanced compression ratio and low-temperature molding technology to ensure high pellet strength and rapid water absorption. The project has been running smoothly and helped the client gain a stable customer base in both domestic and export markets.
ring die pellet machine For Sale Uzbekistan
- Project Output: 10T/H
- Project Country: Uzbekistan
- Raw Materials: 35% Corn, 25% Alfalfa Powder, 20% Wheat Bran, 15% Cottonseed Meal, 5% Vitamin & Mineral Premix
- Project Background: This 10T/H cattle feed project in Tashkent, Uzbekistan, was launched by a large dairy cooperative to secure a stable local feed supply. The area is rich in corn, alfalfa, and wheat bran, ideal for feed production. RICHI designed a fully automated animal feed mill plant including grinding, SLHY animal feed mixer, pelleting, cooling, and animal feed bagging machine, plus a bulk storage silo and conveyor system for smooth material transfer.
Expanded Applications of Our Ring Die Pellet Machines
The RICHI ring die pellet machine offers diverse application solutions for production needs across various industries. Whether it’s livestock and poultry feed, aquatic feed, or ruminant feed, this equipment achieves precise control, efficient operation, and stable pellet quality. It can flexibly adapt to a variety of raw materials, helping users produce high-nutrient feed pellets suitable for different animal species and growth stages.
Livestock Feed Production Line
Shrimp Feed Production Line
Organic Fertilizer Pellet Line
Why Choose Our Ring Die Pellet Machine
RICHI Machinery is a global manufacturer specializing in pellet equipment products, providing complete solutions for feed, biomass fuel, and organic fertilizer pellet production. And the ring die pellet machine stands out as the core unit for large-scale industrial pelletizing. It combines advanced technology, durable construction, and intelligent control to ensure efficient, stable, and high-quality pellet production. Whether you are operating a commercial feed mill, a biomass pellet plant, or an organic fertilizer production line, RICHI offers tailored systems to meet your specific production goals.
Superior Manufacturing Quality
Each RICHI ring die pellet machine is built with precision craftsmanship and high-grade stainless steel, ensuring long service life, strong corrosion resistance, and reliable performance even under continuous high-load operation. All core components—such as the ring die, rollers, and gearbox—are made from wear-resistant alloy materials and go through strict quality testing before delivery.
Versatile Applications
The RICHI ring die pellet machine can process a wide variety of materials—from livestock and poultry feed to biomass fuel, cat litter, grass pellets, and organic fertilizer. With adjustable die hole sizes and conditioning systems, one machine can meet the needs of different industries, offering flexible production options for various market demands.
Energy Efficiency and Stable Output
Equipped with Siemens motors, SKF bearings, and variable-frequency feeding systems, the machine ensures smooth operation, consistent output, and low energy consumption. The intelligent feeding system adjusts automatically according to load, maximizing throughput and protecting the motor from overload.
Customizable Design
The RICHI ring die pellet machine is not limited to animal feed production—it can also be applied to biomass fuel pellets, cat litter, fertilizer granules, and other industrial pelletizing fields. With flexible configuration and mold options, one machine can serve multiple production purposes, greatly enhancing investment value and operational flexibility.
Easy Maintenance and Long Service Life
With a modular design and easy-access structure, daily maintenance and component replacement are simple and quick. The advanced lubrication system ensures smooth bearing operation and reduces wear, significantly extending the overall lifespan of the machine.
Reliable Global Service
RICHI pellet equipment products have been exported to more than 140 countries and regions, supported by a professional international service network. From equipment selection and factory layout to installation guidance and after-sales training, RICHI ensures every customer enjoys efficient and worry-free production.
FAQ
To help customers better understand our equipment, we have compiled frequently asked questions to provide clear guidance for their investments and help ensure efficient and worry-free equipment operation.
My large farm mainly raises livestock and poultry. I now plan to produce my own animal feed. How should I choose the right equipment?
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For large-scale farms raising broilers, layers, pigs, and cattle, RICHI recommends choosing a ring die pellet machine equipped with a double-layer conditioner and variable-frequency feeding system. This configuration ensures sufficient feed maturation, higher pellet density, and uniform nutrition distribution.
If your goal is to produce multiple types of feed, such as both poultry and cattle feed, RICHI can design a multi-formula feed production line with adjustable molds and automatic control, allowing flexible conversion between different feed types. Our technical team will analyze your raw materials, animal types, and desired capacity to provide a complete customized solution, including pelletizing equipment, mixers, grinders, coolers, and packaging machines.
I’m from Nigeria and recently want to invest in a feed mill. The main raw materials here are corn, soybean meal, peanut meal, and rice husks. Can your company provide formulations and customized equipment?
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Yes, of course. RICHI has rich project experience in Africa, including Nigeria, Kenya, Ghana, and Ethiopia. Based on your local raw materials such as corn, soybean meal, peanut meal, and rice husks, our engineers can design scientific feed formulas and provide customized ring die pellet machines optimized for your materials.
We will analyze the nutritional composition and physical properties of each ingredient to develop balanced and cost-effective feed recipes suitable for poultry, cattle, fish, or goats commonly raised in Nigeria. Meanwhile, RICHI can tailor the ring die structure, conditioner system, and layout design to ensure stable pelletizing performance and high feed conversion efficiency.
Is it possible to use one production line for both biomass and fertilizer pellet production?
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Yes, with proper configuration and process adjustments, a single production line can be used simultaneously for the production of biomass and organic fertilizer pellets. RICHI offers modularly designed pelleting systems that allow for flexible and rapid switching between different production applications. By simply replacing or adjusting key components, the same main unit can be used for producing biomass fuel pellets from sawdust, rice husks, and crop straw, as well as for manufacturing organic fertilizer pellets from livestock manure, compost, or biogas residue.
To ensure finished product quality, we employ independent feeding systems for different raw materials to prevent cross-contamination between organic and biomass raw materials. Simultaneously, the intelligent control system automatically optimizes temperature, moisture content, and compression ratio based on the raw material type, allowing operators to easily switch production modes with a single click. This multi-functional configuration not only significantly improves equipment utilization but also reduces enterprise investment costs, making it ideal for production companies simultaneously operating in the renewable energy and agricultural fertilizer sectors.
Can the ring die pellet machine process different types of biomass materials such as sawdust, rice husk, and straw?
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Yes. The ring die pellet machine can handle a wide range of biomass raw materials including sawdust, wood shavings, rice husks, straw, bagasse, palm fiber, and more. By adjusting compression ratios and die hole sizes, the machine can ensure stable molding and high pellet density even with materials of varying fiber content and moisture levels.
I plan to produce cat litter pellets using sawdust and tofu residue. Can your machine handle such mixtures?
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Yes, our ring die pellet machine can efficiently process mixed raw materials such as sawdust and tofu residue for the production of cat litter pellets. Sawdust provides a dry fibrous structure, which helps form strong pellets; tofu residue contains higher moisture and natural binding components, which enhances the compactness and formability of the pellets.
RICHI engineers will customize pelleting process parameters based on the characteristics of the raw materials, including adjusting the moisture content, conditioning temperature, compression ratio, and ring die aperture structure, to ensure a stable pelleting process and consistent pellet quality. For these high-moisture mixed raw materials, we also recommend equipping the machine with an integrated drying system and a variable frequency feeding system to maintain uniform feeding and prevent clogging.
