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Biomass Pellet Mill

Biomass pellet mill is a special equipment that uses forestry waste, agricultural waste, industrial processing waste, urban waste and some special raw materials to process cylindrical pellets. The pellets processed by this equipment are mainly used as biomass fuel, animal feed, cat litter, animal bedding, fertilizer pellets, paving materials, etc. Our biomass pelleting equipment has the established track record of cost savings, durability and unmatched performance.

biomass pellet mill

Biomass Pellet Mill manufacturer

Biomass pellet mill is a special equipment that processes agricultural and forestry waste (such as wood chips, straw, rice husks, feces, forage, etc.) into high-density pellet fuel or feed through mechanical compression. Its core principle is to plasticize the lignin in the raw materials through high temperature and high pressure, and naturally bond them into shape without adding chemical adhesives.

Therefore, biomass pellet machine is the core equipment of "turning waste into treasure", which converts organic waste into high value-added products, and has the triple value of economy, environmental protection and policy drive. When choosing, you need to match the model according to the characteristics of the raw materials, the target market, and the production capacity requirements. The biomass pellet mill from RICHI MACHINERY has the best of both technology and engineering expertise.

The high engineered ring die pelletizing system has proven to be a very efficient and reliable method. Since its inception, the biomass pellet mill design is highly regarded as the benchmark for reliable waste pelleting and its robust design and reliability. Below, explore RICHI's full line of biomass pelletizers, our most popular selling equipment. See for yourself how RICHI has earned its worldwide reputation for providing producers with some of the hardest working machines in the industry.

MZLH

Equipment Model

0.2-8.0

Production Capacity (T/H)

1-9

Cost (Ten thousand USD)

RICHI

Company & Brand

biomass pellet mill uses

application

Biomass pellet mill can be used to process all organic matter and some inorganic raw materials. As long as you have sufficient raw materials, you can start the biomass pellet processing business at any time.

  • Pellet fuel production - used for home heating, industrial boilers, barbecue charcoal, etc.
  • Feed pellet processing - processing straw feed, rice husk pellet mixed feed and other crude fiber feed, pellets with added probiotics.
  • Organic fertilizer pellet processing - chicken manure pellets, cow dung pellets, horse manure pellets, etc. are used in agricultural production.
  • Animal bedding processing - cat litter, livestock bedding (such as pine wood pellets used as stable bedding), etc.
  • Waste resource utilization - urban greening garbage, coffee grounds, etc. are made into pellets to reduce landfill.
  • Others - processing of special products such as coal pellets, paper pellets, rubber pellets, plastic pellets, RDF pellets, bentonite pellets, zeolite pellets, etc.
RICHI MACHINERY
Sawmills
Farms
Furniture Factories
Biomass Power Plants
Palm-oil Mill
Sugar Refinery

[Testing Video] Wood-based biomass pellet mill

This is a test video of the Biomass Pellet Mill before delivery. The equipment comes from one of our 2-3 ton Australian pellet processing projects, and the customer's raw materials are wood scraps generated during furniture processing. In addition to this pelletizer, we also configure slicers, sawdust machines, coolers, screener, auto packaging scales and other equipment for customers. The pellets processed by the equipment will be sold to industrial users using biomass boilers. This type of equipment is mainly used to process fuel pellets, biomass-based cat litter pellets and animal bedding pellets.

【Testing Video】Grass-based biomass pellet mill

This is also a video of a test run based on customer requirements. The customer is from South Africa and will use grass and straw as raw materials to process ruminant feed pellets for cattle, sheep, horses, etc. Different from the wood-based biomass pellet mill, this project uses more grass pellet machines. The biggest difference is the conditioner. Grass pellets need to be equipped with a conditioner to increase the process of maturing materials, while fuel pellets do not need it. This type of equipment is equipped with a conditioner and is mainly used to process biomass-based animal feed pellets.

biomass pellet mill types

At RICHI we believe that there's no one-size-fits-all solution to biomass pelleting. Instead, we understand that no forest waste or agri waste is the same with each having their own unique needs and challenges. This is why we continue to produce and service Different types of biomass pellet machines:

Biomass Pellet Mill Types

Raw materials for biomass pelleting

You can be a pellet processing company, you can come from a wood processing plant, furniture factory, agricultural product processing enterprise (such as rice mill, oil mill), food factory, paper mill, you can come from a biomass energy company, power plant, heating center, you can also be a farmer, forest owner... No matter you are from forestry, agriculture, animal husbandry, energy and environmental protection industry, manufacturing or other industries, as long as you have waste or suitable raw materials, contact us and start your profitable business. Our wide range of biomass pelletizing solutions allow us to service a variety of applications and customer needs.

Wood


Crop Straw


Rice Husk


Grass


Hay


Leaves


Empty Fruit Bunch


Palm Shell


Sugarcane Bagasse


Wine Making Waste


Walnut Shell


Peanut Shell


Sunflower Hulls


Beet Pulp


Coffee Shell


Coconut Shell


RDF


Bentonite


Bamboo


Cassava


Manure Compost


Paper Waste


Coal


Waste Tires


Customisation for Unique Requirements

At RICHI Company, we understand that one size doesn't fit all. We offer bespoke solutions tailored to the specific needs and constraints of each client. Whether it's production capacity, raw material types, raw material physical state, product type to be processed, biomass pellet plant structure, or integration with existing systems (be it ours or another manufacturer's), our expert team collaborates closely with clients to deliver customised

TALK TO AN EXPERT

RICHI biomass pellet mill can offer a robust and reliable solution no matter your industry or application. Pelletizers are critical machinery in any biomass raw materials pellet processing because they are responsible for controlling the quality of the final product. Our biomass pellet press operate in some of the most challenging environments in the industry. That is why our machines are expertly designed and proven to withstand even the harshest of operating conditions.

RICHI MACHINERY

Technical characteristics of Biomass pellet mill

RICHI SERIES New generation ring die type biomass pellet mill machine has been designed using latest engineering tools for high reliability. It has premium features like high-efficiency gear drive and die roller gap management. Its features and the unique design help manufacture sand at lowest possible power consumption and accessories wear cost. Our biomass pellet mill is designed to maximise throughput and product shape in a wide range of pelleing applications. Its cost effectiveness is justified by its low consumption, low operating and maintenance costs as well as high capacity. Designed to perform, our products require as little attention as possible and assure ease of operation.

Technical Characteristics Of Biomass Pellet Mill
The ring die roller adjustment device adopts an external structure, which can adjust the mold roller gap without stopping the machine; The pressure roller is cooled by circulating water.
Technical Characteristics Of Biomass Pellet Mill
Adopting international advanced technology on this biomass pelletizing machine: German gun drill and vacuum furnace heat manufacturing process in ring die making to ensure the pellets smooth and of high quality;
Technical Characteristics Of Biomass Pellet Mill
RICHI adopts high-qualified components on this biomass pellet making machine, with stable performance, long service life and low noise. The bearing has low operating temperature and long service life, which can reduce grease consumption;
Technical Characteristics Of Biomass Pellet Mill
The spindle system adopts a supporting structure, so the spindle will not shake and can provide greater ring die extrusion force;
Technical Characteristics Of Biomass Pellet Mill
Technical Characteristics Of Biomass Pellet Mill
Door is made by stainless steel material, durable use; The cutter assembly - To control the length of final organic fertilizer pellets, means through adjust the distance between cutter and ring die to get thedifferent length of pellets.
Technical Characteristics Of Biomass Pellet Mill

This biomass pellet machine is equipped with full single layer stainless steel feeder, forced feeder, ring die and cutter. RICHI biomass pellet mill is equipped with advanced gear-driving system with motors on this wood pellet machine, stable and reliable;

Technical Characteristics Of Biomass Pellet Mill

Whole transmission parts (including motor) of this biomass pellet press machine chooses high-quality SKF bearings to ensure the transmission efficient, stable, low noise. Main motor choose Siemens;

Technical Characteristics Of Biomass Pellet Mill

The main shaft and pressure roller bearings are equipped with temperature measuring devices to monitor the working status of the bearings;

Advantages of biomass pellet mill

 

High capacity, suitable for industrial production

The single biomass pellet mill capacity can reach 0.2-8 tons/hour, meeting the needs of continuous production of various scales. No matter how much your output is, we can meet your needs.

Stable particle quality and high density

High pressure (100~300 bar) extrusion makes the particle density ≥1.0 g/cm³ and durability ≥97.5%, which meets international certification standards such as ENplus/PFI.

Excellent energy efficiency

Unit power consumption is 70~100 kWh/ton, energy saving is more than 20%, and long-term operating costs are low.

Strong raw material adaptability

It can process hardwood (oak), softwood (pine) and mixed raw materials (various wastes), and adapt to different materials by adjusting the mold compression ratio (6:1~10:1).

Long mold life

Alloy steel ring molds (such as 42CrMo) have high wear resistance and a service life of 800~1000 hours, which is longer lasting than other molds.

High degree of automation

Supports PLC fully automatic control (feeding, lubrication, alarm), reduces manual intervention, and is suitable for 24-hour continuous production.

Advantages Of Biomass Pellet Mill

How it works

 

Pellets are produced in a biomass pellet mill machine that generally consists of a die with cylindrical press channels and rollers that force the biomass to flow into and through the channels. Due to the friction between the steel surface and the biomass in the press channel, a high back pressure is built up and heat is generated.

The physical forces built up in the press channel are crucial for understanding and optimizing the pelletizing process. A ring die with press channels and roller(s) are the basic parts of a biomass pellet making machine.

When the extrusion force is increased enough to overcome the friction between the material in the die hole and the inner wall, the material with a certain density and cohesive force is squeezed into the ring die hole. Due to the continuous rotation of the die and roll, the material is continuously squeezed into the ring die hole.

Therefore, the material in the pelletizer machine ring die hole is continuously squeezed out of the ring die hole after being formed, and is cut by the cutter to form biomass pellets.

 

Parameters and specifications

We mainly provide the following 6 models of biomass pellet making machines, with a production capacity of 0.2-8t/h, suitable for biomass pellet processing businesses of all sizes. We understand that the continued production of quality end-products is of critical importance, that's why our biomass pellets mill products are manufactured to be quickly installed and commissioned. They are also fully supported by our global service network. For more information about our range of biomass pelletizer equipment, please get in touch with our team.

Model MZLH320 MZLH350 MZLH420 MZLH520 MZLH678 MZLH768
Capacity (t/h) 0.2~0.6 0.3~1.2 1.0~2.0 1.5~3.0 2.5~5.0 3.0~8.0
Main motor power (kw) 22 37 90 132 185 250
Main motor series 8P
Ring die diameter (mm) 320 350 420 520 673 762
Finished pellet diameter (mm) 4-12
Device Configuration Ring die material: 42CrMo
Stainless steel feeder: with anti-caking function
Door of pelleting room: 6mm /SUS304
Forced feeding: Worm gear reducer
Gear box: HT250
Gear: 42CrMo
Gear shaft: 42CrMo
Spindle: 42CrMo
Empty shaft: 42CrMo
Bearings: The gear shaft and main shaft bearings are SKF, and the pressure roller bearings are domestic high-quality bearings
Oil seal: Germany/Taiwan
Overload mechanical protection: safety pin
Serpentine spring coupling drive
Lubrication system: Configurable automatic oil injection system

different capacity biomass pellet mill for sale

Explore individual models to see additional, compelling features to help you find the biomass pellet mill that's right for you.

MZLH320

  • Capacirty(T/H): 0.2-0.6
  • Main Power(KW): 22
  • Ring die inner diameter(mm): 320
  • Biomass Pellet Mill Cost: $12,000-15,000
+INFO

MZLH350

  • Capacirty(T/H): 0.3-1.2
  • Main Power(KW): 37
  • Ring die inner diameter(mm): 350
  • Biomass Pellet Mill Price: $14,000-16,000
+INFO

MZLH420

  • Capacirty(T/H): 1.0-2.0
  • Main Power(KW): 90
  • Ring die inner diameter(mm): 420
  • Biomass Pellet Mill Cost: $19,000-21,000
+INFO

MZLH520

  • Capacirty(T/H): 1.5-3.0
  • Main Power(KW): 132
  • Ring die inner diameter(mm): 520
  • Biomass Pellet Mill Price: $28,000-30,000
+INFO

MZLH678

  • Capacirty(T/H): 2.5-5.0
  • Main Power(KW): 185
  • Ring die inner diameter(mm): 673
  • Biomass Pellet Mill Cost: $44,000-46,000
+INFO

MZLH768

  • Capacirty(T/H): 3.0-8.0
  • Main Power(KW): 250
  • Ring die inner diameter(mm): 762
  • Biomass Pellet Mill Price: $66,000-68,000
+INFO

Are you looking for a competent partner for biomass pellet production? Then you have found the right partner!

Talk To An Expert

biomass pellet mill project

Currently, our biomass pellet mill equipment has been exported to the United States, Canada, Poland, Germany, France, Australia, New Zealand, Thailand, Vietnam, Mexico, Ecuador, South Africa, Greece, Brazil, Argentina, Colombia, Indonesia, India, Russia, Kazakhstan, Turkmenistan, Kyrgyzstan, United Kingdom, Serbia, Hungary, Japan, South Korea, Malaysia, Senegal, Angola, Tunisia, Morocco, Chile, Egypt and many other countries. If you want to learn about the cases we have worked on in your country, feel free to contact us for project details!

Biomass Pellet Mill In Poland

5T/H biomass pellet mill In poland

This customer utilizes rye straw, pine sawdust and post-harvest sunflower stalks as main raw materials. The high-capacity MZLH678 biomass pellet mill processes these abundant agricultural residues into premium ENplus-certified pellets for Central European heating markets.

Biomass Pellet Mill In Indonesia

2T/H biomass pellet mill In indonesia

This Indonesia biomass project processes palm kernel shells (EFB), rubberwood waste and rice husks - Indonesia's three most abundant biomass resources. The compact MZLH420 system converts these high-fiber materials into industrial-grade fuel pellets.

Biomass Pellet Mill For Sale Brazil

3T/H biomass pellet mill for sale brazil

Optimized for Brazil's sugarcane bagasse and eucalyptus forestry residues, this pelletizer produces export-quality pellets meeting EU sustainability criteria, with special wear-resistant components for abrasive tropical feedstocks.

Biomass Pellet Mill For Sale USA

2T/H biomass pellet mill for sale USA

Designed for North American softwood sawdust, corn stover and peanut hull blends, this turnkey MZLH420 biomass pellet mill produces PFI-certified pellets with automatic moisture control for the domestic heating market.

Biomass Pellet Mill For Sale Canada

6T/H biomass pellet mill for sale Canada

Processing British Columbia's abundant Douglas fir sawdust and Alberta wheat straw, these industrial biomass pelletizing system includes advanced drying technology for Canada's harsh climate conditions.

Biomass Pellet Mill For Sale Turkey

4T/H biomass pellet mill for sale turkey

This configuration handles Turkey's unique hazelnut shells, cotton stalks and olive pomace mixtures. The MZLH678 biomass pellet press features enhanced compression ratios for these dense Mediterranean feedstocks.

Biomass Pellet Mill For Sale Russia

10T/H biomass pellet mill for sale russia

Engineered for Russia's massive birch/pine logging residues and sunflower husk volumes, this MZLH520 mega-plant produces industrial pellets for European export with Siberian-winter rated components.

Biomass Pellet Mill For Sale Argentina

8T/H biomass pellet mill for sale Argentina

Specialized for pampas grass, soybean stalks and vineyard prunings, this biomass pelletizer addresses Argentina's high-ash agricultural byproducts with intelligent sorting technology.

Biomass Pellet Mill For Sale Austria

6T/H biomass pellet mill for sale Austria

Precision-built for Alpine spruce/fir sawdust and straw mixtures, this MZLH520 biomass pellet mill machine meets Austria's strict ÖNORM M7135 standards with integrated emission controls.

Biomass Pellet Mill For Sale Pakistan

12T/H biomass pellet mill for sale Pakistan

Massive capacity for Pakistan's rice husk and sugarcane bagasse surpluses. The MZLH520 biomass pellets mill features monsoon-proof construction and handles high-silica feedstocks.

Biomass Pellet Mill For Sale Ecuador

3T/H biomass pellet mill for sale Ecuador

This customer uses banana stems, oil palm residues and sugarcane bagasse as the main raw materials. The model of the biomass pellet mill purchased is MZLH520, specially designed for tropical agricultural waste processing.

Biomass Pellet Mill For Sale Colombia

1-2T/H biomass pellet mill for sale Colombia

This customer uses coffee husks, African palm waste and rice straw as the main raw materials. The model of the biomass pellet mill purchased is MZLH420, optimized for Andean region biomass processing.

Biomass Pellet Mill For Sale Singapore

2-3T/H biomass pellet mill in Singapore

This customer uses urban green waste, imported wood chips and horticultural trimmings as the main raw materials. The model of the biomass pellet mill purchased is MZLH520, compact for limited urban spaces.

Biomass Pellet Mill For Sale Australia

10T/H Biomass pellet mill for sale Australia

This customer uses eucalyptus mill waste, wheat straw and macadamia shells as the main raw materials. The model of the biomass pellet mill purchased is MZLH678, built for high-volume Australian biomass processing.

Biomass Pellet Mill For Sale Kyrgyzstan

5T/H biomass pellet mill for sale Kyrgyzstan

This customer uses walnut shells, pasture grasses and cotton stalks as the main raw materials. The model of the biomass pellet mill purchased is MZLH678, designed for cold climate operation.

Biomass Pellet Mill For Sale Malaysia

2T/H biomass pellet mill for sale Malaysia

This customer uses palm kernel shells, rubberwood waste and rice husks as the main raw materials. The model of the biomass pellet mill purchased is MZLH420, specialized for tropical biomass processing.

Biomass Pellet Mill For Sale Belarus

4T/H biomass pellet mill for sale Belarus

This customer uses flax straw, peat and wood processing residues as the main raw materials. The model of the biomass pellet mill purchased is MZLH678, adapted for Eastern European biomass conditions.

Biomass Pellet Mill For Sale United Kingdom

4T/H biomass pellet mill in United Kingdom

This customer uses wheat straw, energy crops and wood shavings as the main raw materials. The model of the biomass pellet mill purchased is MZLH678, meeting UK sustainability standards.

Biomass Pellet Mill For Sale Thailand

10T/H biomass pellet mill for sale Thailand

This customer uses rice husks, cassava residues and sugarcane leaves as the main raw materials. The model of the biomass pellet mill purchased is MZLH768, built for large-scale ASEAN biomass processing.

Biomass Pellet Mill For Sale Peru

6T/H biomass pellet mill Machine for sale Peru

This customer uses quinoa stalks, alpaca manure and agricultural residues as the main raw materials. The model of the biomass pellet mill purchased is MZLH520, designed for high-altitude operation.

Biomass Pellet Mill For Sale Uzbekistan

0.8T/H biomass pellet mill for sale Uzbekistan

This customer uses cotton stalks, desert shrubs and orchard prunings as the main raw materials. The model of the biomass pellet mill purchased is MZLH350, compact for small-scale Central Asian operations.

Biomass Pellet Mill For Sale South Africa

10T/H Biomass pellet mill for sale South Africa

This customer uses macadamia shells, blue gum residues and maize stalks as the main raw materials. The model of the biomass pellet mill purchased is MZLH678, engineered for African biomass conditions.

View Biomass Pellet Project

WHAT OUR CLIENTS HAVE TO SAY

"Many thanks to the RICHI team. The team’s approach to assist to get any of my issues or questions resolved was greatly appreciated as well as your willingness to assist where and as required. As we discussed I am very impressed with the RICHI work on the biomass granulator and the manufacturing team have done an excellent job, with the equipment very high quality, including good steel, equipment layout and installation. Again, the manufacturing team were more than happy to help with any of my questions on granulator and it was a pleasure to work with your group."

Glen Robles

Engineering Director, From Biomass Pellet Plant in USA

Your Trusted Partner in biomass pellet Processing

Customized Turnkey Design/Top-Quality Equipment/Expert Installation/Complete Training and Support
At RICHI MACHINERY, we believe in seeing projects through. We’ll be with you every step of the way to deliver a premium product to your customers. Our biomass pellet manufacturing solution ensure a seamless transition from project conception to completion. Our process starts with a goal and is only complete when biomass pellet product has been successfully delivered. RICHI has over 30 years of experience making business better for our customers. Contact us to get started streamlining your production today.
 
RICHI MACHINERY

Why choose ring die type biomass pellet mill?

Ring die biomass pellets mills are the only type of machine in the world that meets industrial mass production + high quality standards (capacity, density, certification compatibility). In addition, it has the lowest life cycle cost (energy consumption, mold life, maintenance costs). More importantly, the technology is the most mature, and the world's leading manufacturers all use ring die machines as their core products. Especially horizontal ring die pellet machines.

ring die type biomass pellet mill

This type of biomass pelletizer is the only choice for large-scale, high-quality, low-energy production, especially suitable for export markets or industrial-grade pellet processing;

EU ENplus and US PFI certification both require pellet density ≥ 1.0 g/cm³, and only the ring die biomass pellet mill can stably meet the standard

Excellent pellet quality, density and durability: Ring die pellet density 1.0~1.2 g/cm³ (flat die pellets only 0.9~1.0), in line with ENplus A1 standard (durability ≥97.5%).

Leading energy efficiency and low unit energy consumption. The energy consumption of the ring die biomass pellet machine is 70~100 kWh/ton.

The mold life and maintenance cost are low. The ring mold is made of 42CrMo alloy steel (hardness HRC55-60), with a life of 1000+ hours.

The raw material adaptability is wide and can be adapted to different raw materials by adjusting the gap between the die and roller (±0.1mm).

Fully automatic and intelligent, Siemens PLC monitors temperature, pressure, production capacity in real time, and automatically lubricates.

Industrialized high capacity, the world's mainstream choice, 90% of the world's large pellet plants (capacity greater than 5t/h) use ring die biomass pellet making machines.

Flat die granulator/screw granulator

Flat die pelletizers and screw pelletizers are only temporary substitutes in small-scale or special raw material scenarios, but they must compromise efficiency and cost.

The biomass pellets density is relatively low, usually between 0.8 and 1.0 g/cm³, and has no durability. In some cases post-processing is required.

The unit energy consumption is relatively high, the flat die pelletizer is usually 80~120 kWh/ton, and the energy consumption of the screw extruder is ≥120 kWh/ton.

Compared with the ring die pelletizer, the die life is shorter, 300~500 hours for the flat die pelletizer and 200~400 hours for the screw extruder.

The adaptability to raw materials is poor. Flat die pelletizers are suitable for softwood and low-fiber raw materials, while screw pelletizers are suitable for high-fiber raw materials (palm shells, etc.).

The automation level is very low and they cannot achieve fully automatic control. They are not suitable for projects that want to achieve continuous production.

If the raw material is palm shell/bagasse, it can be used in the short term, but it still needs to be upgraded to a ring die biomass pellet machine in the long term.

Small-scale users (capacity < 1 ton/hour) can consider flat die machines, but they need to accept compromises in quality and energy efficiency.

TURNKEY PRODUCTION LINES
FOR BIOMASS PELLETS

OUR EXPERIENCE, YOUR BENEFIT

RICHI Machinery enables individual solutions for your workpiece. The combination of the multitude of industries in which we are active, the various technologies we master, and our own research and development department is unique.

Given each operation and site has its own unique challenges and specific requirements, we work closely with our customers to provide the best design, equipment and machinery to suit their application. We help biomass pellets manufacturers optimise their plant by analysing and assessing equipment and processes holistically, rather than looking at each piece of equipment in isolation.

Our all-of-biomass pellets processing equipment capabilities make us the ideal partner to help biomass pellets manufacturers produce more with less. At RICHI, we offer a diverse portfolio of biomass pellet machinery and auxiliary processing equipment designed to perform in the toughest of applications.

TURNKEY PRODUCTION LINES FOR BIOMASS PELLETS

Technological process

With a portfolio of design and products that span the entire flowsheet – from cleaning to crushing, drying, pelleting and packaging, automation management solutions – we are the trusted biomass equipment manufacturer because we’re uniquely placed to deliver all their processing equipment needs. We can provide a complete set of biomass pellet production lines, or we can provide a single system, such as biomass crushing system, biomass drying system, biomass pelletizing system, biomass pellet packaging system, etc. All your needs can be met at RICHI. (Different raw materials have different pellet processes. If you have biomass pellet processing needs, please consult customer service online directly.)

1 Preparation

Preparation
Prepare suitable raw materials such as sawdust, wood chips, agricultural waste, etc. according to the needs. The raw material yard needs to be rainproof and moisture-proof, and stored in partitions.

2 Cleaning

Cleaning
In almost all projects, raw materials contain impurities, and a multi-stage sorting system is required to clean the raw materials. Cleaning equipment includes magnetic separators, vibrating screens, airflow sorting, etc.

3 Crushing

Crushing
Different crushing system configurations are required for different raw materials. Common biomass raw material crushing equipment includes slicers, shredders, hammer mills, straw crushers, efb crushers, bamboo crushers, ultrafine crushers, etc.

4 Mixing

Mixing
When customers use two or more raw materials, when lignin and other adhesives need to be added to the raw materials, a mixer is required. However, in most cases, biomass pellet processing does not require a mixing system.

5 Drying

Drying
Before entering the biomass pelletizing system, the raw materials need to meet the moisture requirements, that is, less than 20%. If it is higher than this value, a drying system needs to be configured. The main equipment for the drying process is a rotary drum dryer. Some customers will choose a belt dryer.

6 Pelleting

Pelleting
This is the core process of biomass pellet processing. According to the type of product to be processed and the type of raw material, select the appropriate biomass pellet machine, and then process it into cylindrical pellets. The core parameter of the ring die pellet machine is the compression ratio.

7 Cooling

Cooling
After pelleting, the biomass pellets product is very hot, therefore it's necessary to cool the product at approximately +5°C in respect to the room temperature, in order to give it the right hardness and the best consistence to store and handle it.

8 Screening

Screening
The qualified and unqualified organic fertilizer pellets are distinguished by screening equipment. Upper screen hole Φ6mm removes large particles, lower screen hole Φ1mm removes powder. The qualified pellets enter the next stage, and the unqualified pellets are re-granulated.

9 Packaging

Packaging
According to customer needs, we can configure fully automatic packaging lines for customers (25kg/bag (home market), ton bags (500kg for industrial use), and can provide heat sealing + anti-counterfeiting label). Bulk bins and conveying devices can also be configured for direct loading.

10 Auxiliary systems

Auxiliary systems
We can provide customers with a fully automatic control system that integrates all process parameters (temperature, pressure, and production capacity). We can also provide various environmental protection systems, conveying systems, silo systems, dust removal systems, etc.

View Biomass Pellet Production Line Solution

Auxiliary equipment of biomass pellet mill

As a trusted biomass pellet mill manufacturer across the globe, we offer a diverse portfolio of biomass pellet processing equipment that covers the entire flowsheet, from biomass cleaning and crushing to biomass pellet packaging. In addition to the necessary equipment such as crushers, dryers, pelletizers, coolers, screeners, and packaging scales in the biomass pellet processing process, we will also configure cleaning equipment, conveying equipment, dust removal equipment, and fully automatic control equipment for customers. In addition, according to customer needs, we can also configure mixers, silos and other equipment. If the standard technical parameter equipment cannot meet your needs, we also provide customized services and can customize equipment and processes according to customer needs. We also provide a wide range of high quality biomass pellet machinery parts in order to ensure smooth operation and optimum performance on site.

Chipper Machine

Chipper Machine

Bale Breaker

Bale Breaker

Grass Crusher

Straw/Grass Crusher

Biomass Dryer

Biomass Dryer

Biomass Hammer Mill

Biomass Hammer Mill

Biomass Pellet Cooler

Biomass Pellet Cooler

Automatic Bagging Machine

Automatic Bagging Machine

Ton Bag Packaging Machine

Ton Bag Packaging Machine

Biomass Pellet Screener

Biomass Pellet Screener

Scraper Conveyor

Scraper Conveyor

Control Cabinet

Control Cabinet

Dust Removal Equipment

Dust Removal Equipment

Shredder Equipment

Shredder Equipment

Belt Conveyor

Belt Conveyor

Bucket Elevator 

Bucket Elevator

Steam Boiler

Steam Boiler

Sawdust Equipment

Sawdust Equipment

Small Chipper

Small Chipper

Frequently Asked Questions

You may want to know the energy consumption of our biomass pellet mill machine, the FOB price of the biomass granulator, and the process and investment of a 3-4-ton biomass pelletizing system. Below are some FAQs we have listed briefly. If you have any questions, please contact us now for technical support.

The following is a detailed description of the classification and characteristics of raw materials suitable for biomass pellet mill machines based on actual application data from major biomass pellet producing countries around the world, covering forestry, agriculture, industrial by-products, etc., with regional application cases attached:

Forestry and wood processing residues

Coniferous wood raw materials

Representative species: pine, spruce, fir

Characteristics:

  • High lignin content (25~30%), good natural adhesion, easy to press.
  • Calorific value 16~18 MJ/kg, ash content 0.5~1% (ENplus A1 grade preferred).

Global applications:

  • Nordic: 90% of pellet raw materials are spruce/pine sawdust.
  • North America: Southern yellow pine is used for PFI certified pellets.
Hardwood raw materials

Representative types: oak, beech, eucalyptus

Characteristics:

  • Long fibers, requiring a higher compression ratio (8:1~10:1), particle density ≥1.1 g/cm³.
  • Slightly higher calorific value (17~19 MJ/kg), but ash content 1~2% (suitable for industrial grade).

Global applications:

  • Brazil: short-rotation eucalyptus energy forest (annual export of 5 million tons of pellets+).
  • China: poplar/birch mixture (ash content ≤3%).
Wood industry waste

Representative types: sawdust, shavings, scraps, bark, construction waste

Key requirements:

  • Remove adhesives (formaldehyde content <5mg/kg).
  • Bark proportion ≤10% (otherwise ash content exceeds the standard).

Case: German furniture factory: recycled beech shavings to make pellets for local heating.

Agricultural waste

Straw

Representative types: corn straw, wheat straw, rice husk

Characteristics:

  • The fiber is loose, and 20~30% sawdust needs to be mixed to improve the molding rate.
  • Heat value 14~16 MJ/kg, ash content 5~15% (needs desiliconization).

Global application:

  • China: Straw pellet plant (government subsidy ¥200/ton).
  • India: Rice husk pellets are used for co-firing in power plants (ash content ≤20%).
Shell raw materials

Representative types: palm empty fruit bunches (EFB), coconut shells, peanut shells

Characteristics:

  • High fiber, high silicon content, requires screw extruder or wear-resistant ring die.
  • Heat value 18~20 MJ/kg, but ash content 3~8%.

Global application: Malaysia Palm EFB pellets are exported to Japan (annual production capacity of 3 million tons).

Other crop waste

Representative types: bagasse, cotton stalks, coffee shells

Special process: bagasse needs to be pre-dried to a moisture content of ≤12% (byproduct utilization of Brazilian ethanol plants).

Energy crops

Fast-growing tree species

Representative types: willow, poplar, black wattle

Characteristics:

  • 3~5-year rotation period, specially planted for pellet production.
  • Calorific value 15~17 MJ/kg, mold compression ratio needs to be adjusted.
  • Global application: UK: short-rotation willow energy forest (10 tons of dry matter per hectare per year).
Herbaceous energy crops

Representative types: Miscanthus, reed, sweet sorghum

Requirements: poor fiber structure, need to add adhesives (such as lignin or starch).

Organic waste

Food processing waste

Representative types: coffee grounds, olive residues, wine lees

Requirements: moisture content ≤15%, avoid mildew (Italian coffee grounds pellets are popular in Germany).

Urban greening waste

Representative types: garden pruning branches, fallen leaves

Difficulty in processing: Plastics/stones need to be sorted and removed (case of the municipal pellet plant in Amsterdam, the Netherlands).

Special raw materials

Animal feces, algae, bentonite, pyrolytic carbon, waste paper, cartons, waste tires, RDF, plastics, etc.

Practitioners in agriculture and forestry industry

Suitable for: farmers, forest owners, wood processing plants, furniture factory owners

Investment advantages:

  • Raw materials are free of cost or low price: own straw, sawdust, branches and other waste materials can be used directly to reduce production costs.
  • Ready-made site: existing warehouses or open spaces can be transformed into production workshops.

Practitioners in energy industry

Suitable for: coal-fired boiler operators, biomass power plants

Investment advantages:

  • Fuel self-sufficiency: pellets replace coal and reduce energy costs (European pellet prices are 10-20% lower than coal).
  • Policy dividends: "Coal to biomass" subsidies are up to 30% of equipment investment.

Environmental protection and renewable resources enterprises

Suitable for: garbage disposal companies, organic waste recyclers

Investment advantages:

  • Waste value-added: urban greening garbage, kitchen waste, etc. can be converted into pellets to solve disposal problems.
  • ESG bonus: in line with the trend of carbon neutrality, improve the environmental rating of enterprises.

Foreign trade and supply chain enterprises

Suitable for: agricultural product exporters, international trading companies

Investment advantages:

  • High export profit: European ENplus pellets have a landed price of ¥1800-2200/ton, and the cost is only ¥800-1200. For example, Vietnamese rubber factories process waste into pellets for export to South Korea, with a profit margin 40% higher than direct sales of raw materials.
  • Channel reuse: Utilize existing logistics and customer networks (such as exporting wood pellets to Japan).

Government and public welfare organizations

Suitable for: rural cooperatives, rural revitalization project teams

Investment advantages:

  • Policy and financial support: For example, China's straw utilization subsidy is as high as ¥500/ton, and the EU Rural Development Fund provides low-interest loans.
  • Social benefits: Solve the problem of straw burning and create jobs. For example, the Punjab government in India subsidizes villages to build pellet plants together, each plant creates 20 jobs and digests 50,000 tons of straw annually.

Small and medium-sized investors and entrepreneurs

Suitable for: green energy entrepreneurs, small processing plant owners

Investment advice:

  • Asset-light model: focus on the local market (such as bedding pellets for farms).
  • Processing model: provide OEM production for large power plants or exporters.

Investment prerequisites:

Raw material guarantee: stable supply radius ≤ 50 kilometers (such as 10,000 tons of raw materials per year, 5,000 acres of farmland or 2,000 acres of forest land).

Market positioning:

  • Domestic sales: connect with boiler plants and farms (need low ash pellets).
  • Export: obtain ENplus/SBP certification (invest ¥500,000-1 million).

The most suitable sawdust moisture for pelleting: 15% - 20%, if the sawdust moisture is lower than 15%, it will lead to:

  • 1- Increase the difficulty of pressing the sawdust into pellets
  • 2- Reduce the molding/forming rate of pellets
  • 3- Reduce the length of pellets

Our pelletizer can process sawdust with a moisture of 15%- 25% into a final pellet moisture of <10%.

Because the high temperature & high pressure during the pressing process of the ring die will evaporate the excess 5-15% moisture into steam, which is very helpful for the pelletizing process:

  • Steam will soften the sawdust and help with pressing
  • And lubricate the holes in the ring die during the pressing process.

Therefore, proper moisture can improve productivity.

  • 25% moisture sawdust will get 8-9% moisture pellets.
  • 20% moisture sawdust will get 7-8% moisture pellets
  • 15% moisture sawdust will get 6-7% moisture pellets.

Therefore, we recommend that the moisture content of sawdust be controlled at 15-20% before pelletizing.

Some customers do not add any adhesive to biomass pellets, while others choose to add it. It depends on the customer's own formula, both are okay.

If you want to add binder, organic binder/adhesive can be added to sawdust, usually in an amount of 5%. It must be organic, because only organic matter can be 100% burned without any pollution. Commonly used are corn flour and cassava flour.

there are two ways :

  • A: Add a small additive storage bin and conveyor on top of the pellet machine, the cost is cheaper.
  • B: Add a mixing system in front of the biomass pellet machine to mix the adhesive and sawdust. This is more expensive, but the mixing uniformity is the highest , can reach 98% .

Ring die:

Determines the hardness of the pellets. After 4 months of wear, the pellets will become softer. If you can accept the hardness of the pellets, you can continue to use it, unless you cannot accept the hardness of the pellets, then replace it with a new ring die. Maybe wait another 2 months, maybe another 4 months.

Roller shell:

The new one has a molding rate of about 98% and contains only 1-2% powder. But after 4 months of wear, the powder contained in the pellets will increase. If you can accept it, you can continue to use it until you can no longer accept the powder rate. Maybe wait another 2 months, maybe another 4 months.

Materials of Ring die :

  • 42CrMo
  • hardness is HRC55-62

Roller shell : material is 20CrMnTi, hardness is HRC50-55

Regarding the use time of ring die and roller shell, our suggestion is:

  • *- If the working time is =< 10 hours per day, it can be used for 4 months.
  • *- After 4 months of wear :
    1. The diameter of the die hole becomes larger, resulting in a decrease in the compression rate, so the hardness of the final pellets will be softer than before
    2. The roller shell is worn, the pressing force between the ring die and the roller becomes smaller, and the powder rate will be higher
    3. The ring die can be fixed 1-2 times with a special tool and used for another 2-4 months. For tool information, we will provide you with photos of tools and detailed information after advance payment.

So our suggestion :

  • New: 4 months
  • Repair: 1-2 months
  • Repair again : 1-2 months

If the difference is within 5% (360V-400V), there is no problem. If it exceeds 5% (415V, 440V, 600V), it will cause the motor to run at too high a temperature and mismatch the speed, thereby reducing the hourly output and shortening the life of the whole machine.

  1. we don't suggest you to use 380V motors on 440V Voltage.
  2. All motors can work well in the voltage range of +5% to -5%.
  3. Compared with 380V, your voltage has been different by more than 5%.
  4. If it runs for a long time:
    • The motor temperature will rise quickly and become very hot. Disconnect the motor windings and the motor will burn out more easily.
    • 50Hz works on 60Hz: The motor temperature will rise quickly. The noise will also be very loud.
    • 50Hz works on 60Hz, the motor speed will be 20% faster.
      The speed from the motor to the machine is calculated by the gear set, if motor speed is changed , it means the original design of the machine speed has been changed.
      Resulting in:
      This will reduce the forming rate and reduce the hourly output.
      This will shorten the service life of the machine.
  5. Small motors less than 10KW, no problem.
    But in your production line, most of the motors are very large.

So in general:

  • We can customize the voltage and hertz from the motor manufacturer, and customize the electrical components in conotrol cabinet with the correct voltage from the electrical component manufacturer.
  • The cost is only 5% higher. But it is valuable, it can save electricity costs and ensure the safe and long-term operation of the machine.

So we recommend: The motor and the electrical control cabinet all use the correct voltage to protect the normal operation of the motor and the equipment

d/h =compression ratio:

For the ring die, it has the following data:

  • “d”, which is the diameter of the ring die, it decide the diameter of pellets.
  • “h”, which is the effective pressing depth of the hole, you can say the thickness of the hole, it decide the hardness of pellets.

The “h” is more longer, more longer time is needed to press the materials out from the ring die, ,so the final feed pellet will be harder.

Compression ration for different kinds of biomass pellets

  • hard wood : 1:4-1:5.5
  • soft wood : 1:5-1:6
  • straw/husk/shell/corncob : 1:5-1:5.5

There are two types of ring die clamps/hoop on the market:

  • forged clamp
  • cast clamp

We use forged ones, which are more durable, more beautiful and more better quality than cast ones.

Our factory adopts a higher standard process, using powder spraying technology instead of painting technology.

Advantages of powder spraying technology:

  1. First spray powder, then electric baking, and finally drying. The final effect is far better than painting.
  2. High machine brightness
  3. High thickness
  4. Not easy to rust
  5. Powder spraying technology has higher requirements on the quality of equipment. Only high-quality machines can be powdered. If the machine is rough, powder cannot be sprayed on. Painting is not the same. Whether the machine is of good quality or not, paint can be sprayed on.

service & support

Consultation and Definitions

With over 30 years of experience, we can identify issues and provide effective solutions in your biomass pellet mill & production lines. We can advise on a consultancy basis whether you have questions about the right solution for your problem, or simply want to better understand the options available to you.

Project Planning and Budgeting

When we begin a new design-build biomass pellet machine plant construction project, our team will plan out and analyze every aspect of the proposed design to make sure it will elevate your current business model and address specific concerns in the biomass feed production process.

Design and Engineering

RICHI team manages every aspect of the biomass pellet plant build process, including the design, planning, engineering, and construction of your new system. With expertise across the agricultural, industrial and manufacturing industries, we can create a custom solution for your facility.

Equipment Manufacturing

Our self-designed and manufactured equipment and products are all made to meet the regulations and quality requirements of various countries, which applies to the execution of different types of biomass fuel pellet processing plants, feed plant and animal bedding plants.

Equipment delivery

RICHI has been working hard to make every detail perfect, especially in the equipment preparation and shipment stage. In the equipment packing and packaging, we use professional packaging and modular solutions to ensure the safe and damage-free delivery of the equipment.

Fabrication Services

We offer comprehensive steel detailing and drafting services, encompassing detailed drawings, erection plans, shop drawings, isometric details, fabrication cut sheets, weld procedures, quality control documentation, and powder coating.

Equipment Installation

According to customer needs, Richi Machinery installation engineers will guide the construction of site infrastructure, equipment installation and commissioning, and trial operation of the entire biomass pellet production factory.

Maintenance & Support

With continually rising demand and quality standards, many pellet manufcturers are struggling to cope and have significant engineering challenges. Timely repairs and maintenance are critical to avoid costly downtime and disruption.

Evaluation

Design

Manufacturing

Delivery

Engineering

Installation

Training

Automation

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Our waste-to-fuel biomass pelleting plant solutions reduce landfill use and greenhouse gas emissions while providing a sustainable energy source that can replace traditional fossil fuels.

RICHI's innovative biomass pelletizing technology makes it an industry leader in fueling eco-friendly waste-to-fuel and waste-to-energy processes, offering advanced solutions for densification, size reduction, and all waste material processing needs. 

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Join forces with RICHI to access innovative biomass processing solutions that advance your sustainability goals. Our technologies are at the forefront of the green energy transition, helping to build a more environmentally responsible future.

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POSITION IN INDUSTRY

Meet global product demands and quality standards with industry-leading pellet plant design, engineering, equipment, and construction services for pellet processors.

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RICHI is the leading designer, manufacturer and builder of pellet plants in the world, completing over 2000 projects in 140 countries across 6 continents.

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With biomass pellet mills, hammer mills, biomass dryers, coolers and more, plus aftermarket parts and service, our biomass portfolio is expansive and offers customers the flexibility they need to run a smooth operation.

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Industries We Serve

For nearly 30 years, RICHI Machinery has had the opportunity to work with a variety of industries – learning the complexities of diverse materials, navigating unique industry challenges, and discovering innovative pellet plant solutions along the way. Whether you work with feed, biomass, wood, organic fertilizer or cat litter products, RICHI is committed to being your partner in innovation, success, and operational excellence.

 

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RICHI MACHINERY

Founded in 1995, RICHI Machinery began as a pellet machine manufacturer and pellet plant system provider that steadily grew into the comprehensive service and equipment provider it is today. We pride ourselves on the knowledge and skill that each team member possesses – from our technical sales team to our process design engineers. You can count on RICHI to take your operation to the next level of success.

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Expertise

With our expert team, we precisely implement your process engineering requirements in pellet mill and pelletizing plant systems. No matter which industry you’re in – we understand your needs and deliver solutions that meet the highest standards.

Quality

At RICHI, quality comes first. Our pellet making machine and related pellet line equipment undergo rigorous quality controls to ensure they meet the highest standards. Rely on products that are durable, safe, and efficient.

Experience

With decades of experience in pellet machine and pellet production line production, we have earned a reputation as a trusted partner in various industries. Our expertise allows us to cover a wide range of applications.

service

Not only do we offer premium pelleting equipment, but we are also experts at designing, building, installing, and maintaining facilities from the ground up. Our expertise is within pellt plant process design, discovering the most efficient, productive, and profitable way to handle your materials in an end-to-end cycle.

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Keeping in touch with us is an effective way to solve all your problems. If you have any needs or questions, please leave your contact information, then RICHI technical consultants will send design, quotation, videos to your mailbox. You can also contact us directly via WhatsApp: +86 13838389622

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