Macchina per pellet con stampo ad anello
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 offre diversi modelli, dalle configurazioni più piccole a quelle più grandi. La capacità di una singola unità varia da 1 tonnellata/ora a 40 tonnellate/ora, soddisfacendo pienamente le esigenze di produzione personalizzate di clienti di diverse dimensioni. Ogni modello è sottoposto a una progettazione precisa e a test rigorosi, per ottenere una configurazione ottimale in termini di stabilità, efficienza produttiva e adattabilità, offrendo agli utenti la scelta ideale per una produzione di pellet ad alta affidabilità e qualità.
Macchina per pellet di alimentazione con stampo ad anello

| Modello | SZLH250 | SZLH320 | SZLH350 | SZLH420 | SZLH508 | SZLH558 | SZLH678 | SZLH768 |
| Potenza del motore principale (kW) | 22 | 37 | 55 | 110 | 160 | 185 | 250 | 315 |
| Potenza di alimentazione (kW) | 1.1 | 1.5 | 1.5 | 1.5 | 1.5 | 1.5 | 1.5 | 2.2 |
| Potenza del modulatore (kW) | 1.5 | 4 | 4 | 7.5 | 7.5 | 11 | 11 | 11 |
| Diametro interno dello stampo ad anello (mm) | 250 | 320 | 350 | 420 | 508 | 558 | 673 | 762 |
| Diametro del pellet finito (mm) | 2~12 | |||||||
| Produzione (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

| Modello | MZLH320 | MZLH350 | MZLH420 | MZLH520 | MZLH678 | MZLH768 |
| Potenza del motore principale (kW) | 22 | 37 | 90 | 132 | 185 | 250 |
| Arch-Breaking Feeder Power (kW) | 2.2 | 2.2 | 3 | 3 | 3 | 4 |
| Potenza di alimentazione forzata (kW) | 0.75 | 0.75 | 1.5 | 1.5 | 1.5 | 1.5 |
| Diametro interno dello stampo ad anello (mm) | 320 | 350 | 420 | 520 | 673 | 762 |
| Diametro del pellet finito (mm) | 4~12 | |||||
| Produzione (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

| Modello | CZLH320 | CZLH350 | CZLH420 | CZLH520 | CZLH678 | CZLH768 |
| Potenza del motore principale (kW) | 22 | 37 | 90 | 132 | 185 | 250 |
| Arch-Breaking Feeder Power (kW) | 2.2 | 2.2 | 3 | 3 | 3 | 4 |
| Potenza di alimentazione forzata (kW) | 0.75 | 0.75 | 1.5 | 1.5 | 1.5 | 1.5 |
| Diametro interno dello stampo ad anello (mm) | 320 | 350 | 420 | 520 | 673 | 762 |
| Diametro del pellet finito (mm) | 4~12 | |||||
| Produzione (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

| Modello | MSZLH250 | MSZLH320 | MSZLH350 | MSZLH420 | MSZLH508 | MSZLH558 | MSZLH678 | MSZLH768 |
| Potenza del motore principale (kW) | 22 | 37 | 55 | 110 | 160 | 185 | 250 | 315 |
| Potenza di alimentazione (kW) | 1.1 | 1.5 | 1.5 | 1.5 | 1.5 | 1.5 | 1.5 | 2.2 |
| Potenza del modulatore (kW) | 1.5 | 4 | 4 | 7.5 | 7.5 | 11 | 11 | 11 |
| Diametro interno dello stampo ad anello (mm) | 250 | 320 | 350 | 420 | 508 | 558 | 673 | 762 |
| Diametro del pellet finito (mm) | 2~12 | |||||||
| Produzione (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

| Modello | FZLH250 | FZLH320 | FZLH350 | FZLH420 | FZLH520 | FZLH678 | FZLH768 |
| Potenza del motore principale (kW) | 22 | 22 | 37 | 90 | 132 | 185 | 250 |
| Arch-Breaking Feeder Power (kW) | 2.2 | 2.2 | 2.2 | 3 | 3 | 3 | 4 |
| Potenza di alimentazione forzata (kW) | 0.75 | 0.75 | 0.75 | 1.5 | 1.5 | 1.5 | 1.5 |
| Diametro interno dello stampo ad anello (mm) | 250 | 320 | 350 | 420 | 520 | 673 | 762 |
| Diametro del pellet finito (mm) | 4~12 | ||||||
| Produzione (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.
Different Ring Die Pellet Machine In Global Projects
Da oltre 30 anni, Macchinario RICHI 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
- Produzione del progetto: 2T/H
- Paese del progetto: Canada
- Raw Materials: 70% sawdust, 20% wood shavings, 10% bark powder
- Project Background: This 2–3T/H linea di produzione di pellet di legno 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, macchina per il raffreddamento dei pellet, 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
- Produzione del progetto: 3-5T/H
- Paese del progetto: Senegal
- Materie prime: 40% Mais, 20% Farina di arachidi, 15% Crusca di riso, 10% Farina di pesce, 10% Crusca di frumento, 5% Premiscela e Additivi
- Contesto del progetto: Situato a Dakar, in Senegal, questo progetto di mangimi per pollame sostiene l'industria dell'allevamento di polli in rapida crescita. In precedenza, il cliente si affidava a mangimi importati dai costi elevati e dalla qualità instabile. RICHI ha fornito un impianto da 3-5T/H impianto di pellet per mangimi per pollame con un mulino a martelli, macchina miscelatrice per mangimi per pollame, macchina per pellet, vagliatore rotante e sistema di imballaggio automatico, per ottenere una produzione continua ed efficiente.

ring die pellet machine For Sale malaysia
- Produzione del progetto: 2T/H
- Paese del progetto: Malesia
- 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.

macchina per la produzione di pellet con trafila ad anello in vendita Uzbekistan
- Produzione del progetto: 10T/H
- Paese del progetto: Uzbekistan
- Materie prime: 35% di mais, 25% di erba medica in polvere, 20% di crusca di frumento, 15% di farina di semi di cotone, 5% di premiscela di vitamine e minerali.
- Il contesto del progetto: Questo progetto di alimentazione del bestiame da 10T/H a Tashkent, in Uzbekistan, è stato avviato da una grande cooperativa lattiero-casearia per garantire una fornitura stabile di mangimi a livello locale. L'area è ricca di mais, erba medica e crusca di grano, ideali per la produzione di mangimi. RICHI ha progettato un impianto completamente automatizzato impianto di macinazione per mangimi animali compresa la rettifica, Miscelatore per mangimi SLHY, pellettizzazione, raffreddamento e macchina insaccatrice per mangimi animali, oltre a un silo per lo stoccaggio di materiali sfusi e a un sistema di trasporto per un trasferimento agevole del materiale.
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.

Linea di produzione di mangimi per il bestiame

Shrimp Feed Production Line
Why Choose Our Ring Die Pellet Machine
RICHI Machinery is a global manufacturer specializing in Prodotti per la produzione di pellet, 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
Per aiutare i clienti a comprendere meglio le nostre apparecchiature, abbiamo raccolto le domande più frequenti per fornire una guida chiara ai loro investimenti e contribuire a garantire un funzionamento efficiente e senza preoccupazioni delle apparecchiature.
La mia grande azienda agricola alleva principalmente bestiame e pollame. Ora ho intenzione di produrre il mio mangime per animali. Come devo scegliere l'attrezzatura giusta?
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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.
Se il vostro obiettivo è produrre più tipi di mangimi, come quelli per il pollame e per il bestiame, RICHI può progettare una linea di produzione di mangimi multiformula con stampi regolabili e controllo automatico, consentendo una conversione flessibile tra diversi tipi di mangimi. Il nostro team tecnico analizzerà le vostre materie prime, i tipi di animali e la capacità desiderata per fornire una soluzione completa e personalizzata, che comprenda attrezzature per la pellettizzazione, miscelatori, macinatori, raffreddatori e confezionatrici.
Vengo dalla Nigeria e recentemente vorrei investire in un mangimificio. Le materie prime principali sono mais, farina di soia, farina di arachidi e lolla di riso. La vostra azienda può fornire formulazioni e attrezzature personalizzate?
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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.
Analizzeremo la composizione nutrizionale e le proprietà fisiche di ciascun ingrediente per sviluppare ricette di mangimi equilibrate ed economicamente vantaggiose, adatte a pollame, bovini, pesci o capre comunemente allevati in Nigeria. Nel frattempo, RICHI è in grado di personalizzare la struttura della trafila, il sistema di condizionamento e il design del layout per garantire prestazioni di pellettizzazione stabili e un'elevata efficienza di conversione del mangime.
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.

























