Biomass Pellet Machine
Biomass pellet machine convert agricultural and forestry waste into clean, efficient energy. RICHI offers solutions ranging from single units to complete production lines with capacities from 0.2 to 40 t/h.
Biomass Pellet Machine for Various Materials
Different raw materials require specific processing solutions. We customize pellet mills to handle diverse feedstocks efficiently, ensuring high production value for your facility.
Heavy-Duty System Designed for Wood
RICHI biomass pellet machines feature a heavy-duty design specifically for high-hardness wood.
Direct precision gear transmission ensures smooth operation and higher efficiency. To withstand continuous impact, the main shaft is forged and paired with SKF bearings for stable, low-noise performance under heavy loads. Additionally, wear-resistant treatments on the ring die and rollers resist wood fiber friction, reducing maintenance downtime significantly.
Anti-Tangle Feeding for Grass
Fluffy grass materials that typically clog can be pelleted smoothly here thanks to a standard “bridge-breaking + forced” dual feeding system.
A variable-pitch screw breaks up clumps before the forced feeder pushes material into the pelleting chamber. Even long fibers won’t cause issues because internal anti-tangle scrapers prevent spindle wrapping. This continuous, uniform feeding structure greatly improves overall stability when processing grass.
Variable Frequency Feeding for Straw
Straw often has fluctuating moisture levels and contains sand or soil, yet the RICHI biomass pellet machine handles it with high tolerance.
The bridge-breaking feeder supports variable frequency speed adjustment to regulate discharge based on material dryness. An enlarged inlet combined with Siemens variable frequency motors allows various straw types to enter the chamber smoothly, effectively lowering blockage risks.
Anti-Slip Gripping for Shell
Shell materials are smooth and low in oil, making them prone to slipping inside the ring die. Our eccentric shaft roller structure precisely adjusts the gap between the ring die and roller to maintain uniform clearance. Proper gap adjustment ensures effective gripping of smooth shells, preventing roller slippage and poor discharge.
Heat treatment strengthens key components throughout the machine, while advanced serpentine spring couplings ensure safe operation with minimal failure rates.
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Customizable Biomass Pellet Machine
Sawdust Pellet Machine
Wood processing waste is fine, dry, and flows easily, so we enlarged the equipment inlet size. A variable-frequency anti-caking feeder works with a forced feeding system to make smooth, uniform supply the norm.
Softwood Pellet Machine
Softwoods like pine, fir, and poplar have moderate oil content, but their long fibers continuously wear down molds. Therefore, MZLH series ring dies and rollers use high-wear-resistant alloy steel to extend service life considerably.
Hardwood Pellet Machine
Processing high-density hardwoods like oak or hickory tests the equipment’s compression resistance most severely. This machine carries a precision gear drive system and reinforced main shaft to withstand extremely high radial loads.
Alfalfa Pellet Machine
Forced feeding systems and stainless steel conditioners improve bonding for fluffy alfalfa significantly. Finished pellet diameters adjust flexibly between 4 and 12 mm to meet different market requirements easily.
Wheat Straw Pellet Machine
An anti-caking feeder with variable pitch design actively breaks apart smooth, fibrous wheat straw much like a grinder. It then forces the material directly into the pelleting chamber without interruption.
Corn Stalk Pellet Machine
Coarse, hard stalks with fluctuating moisture present complex working conditions, so we invested heavily in feeding R&D. A unique variable pitch design breaks arches automatically during operation while a forced feeder sends fluffy stalks precisely into the forming zone.
Rice Husk Pellet Machine
Rice husks are extremely smooth and lack natural binders, yet the CZLH series presses them tightly into the ring die. A wide inlet, variable frequency motor, and anti-arch feeding system work together perfectly to achieve this.
Coffee Shell Pellet Machine
Precision ring dies and rollers compress poorly cohesive coffee shells into high-density 6–12 mm pellets. This new fuel offers considerable calorific value, easy transport, and emissions far below traditional coal.
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RICHI MZLH Series Pellet Mill Technical Parameters
Designed for high-density wood fibers, this biomass pellet machine for sale produces high-quality fuel pellets. Data reflects rated output on complete production lines; actual capacity depends on raw material density and compression ratio.
MZLH320
Capacity: 0.2–0.3 t/h
Main motor power: 22 kW
Ring die diameter: 320 mm
As an ideal entry-level choice, this compact unit is easy to operate. It suits small biomass fuel workshops, family farms, or initial R&D testing as a first step into wood pellet production.
MZLH350
Capacity: 0.3–0.5 t/h
Main motor power: 37 kW
Ring die diameter: 350 mm
Built for medium wood processors and regional distributors, it delivers stable, high-quality output while keeping energy and maintenance costs low. Produced pellets supply boilers and home heating markets directly.
MZLH420
Capacity: 1.0–1.2 t/h
Main motor power: 90 kW
Ring die diameter: 420 mm
This model upgrades operations to commercial scale production. Standard variable-frequency anti-arch and forced feeders boost pellet formation rates significantly, meeting professional factory standards for continuous operation.
MZLH520
Capacity: 1.5–2.0 t/h
Main motor power: 132 kW
Ring die diameter: 520 mm
Acting as the backbone of large production lines, it relies on a high-torque gear drive for 24/7 stability. Special wear-resistant alloys in the ring die and rollers extend core wearing part life noticeably.
MZLH678
Capacity: 2.5–3.0 t/h
Main motor power: 200 kW
Ring die diameter: 673 mm
A true industrial heavyweight designed for intense capacity demands. Facilities like large wood processing parks or biomass power plants deploy it to guarantee steady pellet fuel supply.
MZLH768
Capacity: 3.0–4.0 t/h
Main motor power: 250 kW
Ring die diameter: 762 mm
Customized for ultra-large production lines, this flagship equipment conquers high-density hardwood pressing challenges effortlessly. It produces 4–12 mm pellets flexibly, serving as the cornerstone for major biomass energy projects.
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Core Advantages of Biomass Pellet Machine
Versatile Material Compatibility
From forestry sawdust and branches to agricultural straw, rice husks, peanut shells, palm shells, bagasse, waste boards, and alfalfa, our biomass wood pellet machines handle them all. Whatever biomass organic material you have, it transforms into high-value fuel or feed reliably.
High-Efficiency Gear Drive
We equip Siemens industrial motors alongside high-quality gearboxes, imported bearings, and oil seals. This configuration raises transmission efficiency by about 15% compared to traditional belt drives. Strong, stable power output lowers your long-term operating energy consumption effectively.
Anti-Clog Feeding System
Light or powdery materials often cause blockages, so we optimized the inlet with Siemens variable-frequency anti-arch and forced feeding systems. This combination pushes material forcefully to ensure continuous, uniform supply. Your production line stays smooth as a result.
Premium Wear-Resistant Parts
Core components receive extensive attention to maximize longevity. Ring dies use high-wear-resistant alloy steel with deep carburizing and quenching for extreme durability. Rollers made of 40CrMnTi alloy feature adjustable eccentric shafts, while a sturdy heavy-duty frame reduces resonance to guarantee biomass pellet machine lifespan.
Built-In Safety Protection
Equipment safety remains our top priority throughout the design process. Overload protection and real-time monitoring prevent damage from operational errors effectively. Furthermore, pneumatic quick-discharge doors clear blockages rapidly to avoid motor burnout or core component damage.
Automated and Easy Operation
Daily operation becomes worry-free since RICHI pellet mills support one-button startup. PLC control systems detect and adjust feeding automatically to keep machines running at optimal conditions. Optional automatic bearing lubrication adds grease on schedule, while quick-release clamp ring dies allow single-person replacement to lower maintenance barriers significantly.
Biomass Pellet Production Process Flow
High-quality pellets require more than just a biomass pellet making machine; they demand a precise process flow. Below outlines the key processes and auxiliary equipment in a complete biomass pellet production line.
Raw Material Pre-processing
Raw materials undergo chipping, crushing, grinding, and cleaning to remove impurities. This prepares everything properly for subsequent pelleting steps.
Wood chippers reduce logs and branches into chips, while crushers grind chips and straw into 3–5 mm powder. Fine sawdust skips directly to impurity removal.
Drying
Processed materials must reach appropriate moisture content ranges for success.
Excessively high or low moisture affects pellet formation and output negatively. Fresh wood often exceeds 30% moisture and requires drying. Dryers bring raw material water content to the optimal 13%–18% pelleting range.
Pelleting
In this process, sawdust and straw are transformed into finished particles in the biomass pellet machine.
Dry, crushed, and evenly mixed materials enter the chamber via variable-frequency feeders and forced feeders. High pressure and friction heat from the ring die and rollers extrude cylindrical pellets, with cutter length adjustment controlling size. Finished pellet diameters typically range from 4 to 12 mm.
Cooling
Pellets exiting the machine reach 80–90°C and remain relatively moist and soft. Cooling equipment helps them cool, dehumidify, and solidify quickly. Only after dropping to room temperature can they be packaged safely without cracking, sticking, or spontaneous combustion.
Screening and Grading
Finished pellets pass through screening to separate impurities, unqualified powder, and debris. This ensures final product uniformity and quality consistently. Non-compliant pellets return to the production line for re-pelleting, minimizing material loss effectively.
Packaging
Qualified biomass pellets are weighed, bagged, and sealed using automatic packaging machines according to preset weights. Automated packing systems boost production efficiency greatly while cutting labor costs.
Auxiliary Equipment for Biomass Pellet Production
The biomass pellet machine gives the core of the pellets the ability to shape, while the auxiliary equipment improves the quality of the pellets through precise pretreatment and post-processing.
Wood Debarker
Removes bark from log surfaces quickly for easier downstream processing.
Template Crusher
Features a wider inlet to crush broad, flat wood into 3–5 cm pieces.
Drum Chipper
Reduces large wood blocks into 2–3 cm coarse material efficiently.
Hammer Mill
Thoroughly crushes pre-processed wood into 3–5 mm sawdust.
Bale Breaker
Primarily disperses compressed straw bales for further processing.
Biomass Dryer
Lowers raw material moisture to the optimal 13%–18% pelleting range.
Counterflow Cooler
Rapidly cools, dehumidifies, and solidifies freshly made pellets.
Vibrating Screen
Separates qualified pellets from fines and oversized particles.
Packaging Machine
Automatically packages qualified biomass pellets by preset weight.
Actual Shots of Biomass Pellet Production
Here we show real videos of customers testing machines from past projects. These unedited videos help you quickly evaluate the performance of RICHI biomass pellet machine, giving you confidence in your purchase.
American Hay Pellet Processing Plant
We focused the camera on this hay line where the machine was being tested. The electric control cabinet is powered on and the entire line is started. The hay goes in, is first crushed into powder, and then extruded through a pellet mill, and comes out as pellets. The finished particles are rolled and screened on the grading screen, and finally enter the packaging section.
The whole process is smooth and there is no clogging. As you can see in the close-up of the video, the hay powder is finely crushed, the finished particles have a smooth surface, uniform color, and good molding quality.
Australian Biomass Fuel Processing Plant
The video mainly captures the operation of the biomass pellet machine, with a production capacity of 2-2.5 tons/hour running quite steadily.
There is a close-up of the finished particles in the video, and you can see that the surface of the particles is smooth and the density is high. The electrical control cabinet is also provided with a lens, and the circuits of the entire line strictly comply with Australian and New Zealand electrical standards. Feedback from customers has been positive, saying they are new to the industry but this line has never bothered them.
Argentina Alfalfa Pellet Production Line
The video was taken after the production line was installed. An overview of the entire line, from crushing and granulating to screening, conveying, and packaging, all sections are smoothly connected. The noise of the granulator is well controlled when it is working. In the camera, you can see the finished granules on the screen rolling and screening, and the conveyor belt sends the granules into the packaging section.
This 3-4 tons/hour alfalfa pellet line is very suitable for local small and medium-scale biomass pellet processing plants.
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Listen to Real Voices
We collected genuine feedback from customers worldwide using RICHI biomass pellet machine and production lines. These responses from frontline factory owners help you understand our machine performance intuitively.
Winters here hit -15°C, freezing wood solid. A domestic line installed in 2015 kept clogging constantly. Then RICHI visited without pushing new sales; they simply changed our old line’s ring die compression ratio from 1:5 to 1:6.8 and swapped belts for their small gearbox module. That old line actually runs now—just needs a 10-minute warmup, then it’s smooth sailing.
Johann Karlsson
Operations Director, Iceland Biomass Fuel Plant
As newcomers to the pellet fuel industry with tight budgets, we appreciated RICHI not pushing full equipment sets immediately. Instead, they suggested sourcing used debarking and splitting equipment secondhand, directing saved funds toward the critical MZLH520 pellet mill and screening system. They called it ‘spending money where it matters most.’ Those practical words earned my trust completely.
David Harrison
Partner, Australia Pellet Fuel Processing Plant
Our first pellet mill ran steadily for years. When seeking a new line, we returned directly to RICHI without looking elsewhere—one email sealed the deal. Brazil has abundant coffee shells previously discarded as waste. Now pellet mills press them into 6 mm pellets with calorific values approaching mid-low grade coal. Customers say they sell better than wood pellets.
Marcos Oliveira
Purchasing Manager, Brazil Biomass Pellet Plant
Their biomass pellet machine really isn’t picky about feedstock. We’ve fed it damp, blackened aged straw containing some soil without issues, though output slowed slightly. We bought two units: one makes fuel pellets for biomass boiler plants, while the other tests various formulas. With cheap straw, trial errors don’t hurt financially. Combined hourly output reaches one ton, covering local heating needs sufficiently.
Krzysztof Wojciechowski
Renewable Energy Technical Lead, Poland Biomass Processing Plant
Buyer’s Guide & Support Center
We have compiled this concise guide in response to frequently asked questions from global customers in their consultations. We provide you with professional and transparent answers so that you can buy and use with confidence.
What Is a Biomass Pellet Machine?
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Simply put, a biomass pelletizer compresses loose agricultural or forestry waste like sawdust, corn stalks, or peanut shells into high-density cylindrical pellets. Everyone uses them because pelleting drastically reduces bulky waste volume for easier storage and transport. Burning efficiency increases while dust decreases, making pellets a superior clean energy alternative to coal.
Biomass pellets serve extremely broad purposes:
Fuel: Sawdust or straw pellets generate electricity, heat industrial boilers, or warm homes with far lower carbon emissions than fossil fuels.
Feed: Alfalfa or wheat bran pellets improve livestock digestion and nutrient absorption significantly.
Cat Litter/Bedding: Sawdust or paper pulp pellets offer strong moisture absorption and odor control for pets.
Industrial Raw Materials: Specific pellets support activated carbon production or biomass gasification applications.Estimate capacity needs and budget
How Do I Choose the Right biomass pellet maker?
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Selecting the correct machine requires comprehensive consideration across four aspects:
Step 1: Define Your Raw Material and Planned Output
Woody materials like sawdust or soft/hardwood are dense with long fibers. Choose ring die pellet mills such as the RICHI MZLH series featuring high-torque gear drives and wear-resistant parts. Expect slightly lower output compared to straw processing.
Straw or grass materials like alfalfa and wheat straw are fluffy and light, causing feeding difficulties. Select models with forced and anti-arch feeders like the RICHI CZLH series.
Shell materials including rice husks and coffee shells are smooth and hard to grip. Machines need knurled rollers and high-compression-ratio ring dies to prevent slippage.
For output, a small biomass pellet maker suits small workshops producing hundreds of kilograms per hour; medium factories need 1–3 t/h, while large commercial lines require industrial equipment exceeding 5 t/h.
Step 2: Focus on Raw Material Moisture Content
Most pellet mills demand 13%–18% moisture content, with 15% being optimal. Excessive moisture causes loose, brittle pellets, while insufficient moisture increases energy consumption and machine wear. Always add drying equipment before pelleting if materials are too wet.
Step 3: Evaluate Core Machine Configuration
Prioritize gear transmission achieving roughly 98% efficiency over belt drives for greater stability and lower failure rates during continuous production. Quality ring dies use alloy steel with vacuum heat treatment for wear resistance; rollers should be carburized alloy steel for strong gripping. Light or fluffy materials absolutely require forced feeders to prevent clogging.
Step 4: Consider Supplier Comprehensive Strength
Buying equipment means purchasing long-term service, not just hardware. When evaluating biomass pellet machine manufacturers, verify their strict quality control systems, market qualifications, and successful case studies with similar materials. More importantly, confirm they provide customized plans based on your site and budget, ensuring the biomass pellet machine price reflects true value alongside rapid after-sales response.
We strongly recommend communicating your actual situation thoroughly before confirming orders. Support for factory visits and machine testing ensures peace of mind. In fact, this aligns with RICHI’s consistent service standards—transparent on-site inspections, free material trials, tailored solutions, and responsive after-sales support are all ready for you. We aim to make your purchase secure and operation worry-free. Look forward to your message.
Is Your Biomass Pellet Machine Easy to Maintain?
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Easy maintenance guided our core design principle: make repairs and daily upkeep fast, intuitive, and hassle-free. Here is how our design and after-sales support guarantee this:
Quick Wearing Part Replacement
Ring dies and rollers are primary wear components. Our quick-release clamp system lets workers extract ring dies by loosening a few bolts without heavy lifting tools or welding. Ordinary mechanics complete full replacements in just 30–40 minutes, saving hours compared to older models.
Globally Universal Key Components
All core parts like SKF bearings, Siemens motors, oil seals, and belts use international standard models. If damage occurs, buy original accessories locally from authorized agents for same-day replacement. This eliminates long downtimes waiting for overseas shipments entirely.
Intelligent Fault Diagnosis
Troubleshooting shouldn’t rely on blind guessing. PLC control systems feature intelligent self-diagnosis capabilities. Blockages, overheating, or overloads trigger clear English fault codes with step-by-step resolution guides on screen. Operators pinpoint causes accurately to fix issues fast, avoiding secondary damage from unnecessary disassembly.
Reliable Remote Video Technical Support
For complex electrical or hydraulic problems, after-sales engineers provide remote video guidance anytime. Regardless of time zones, we guide your team through troubleshooting step-by-step via video calls combined with technical drawings whenever needed.
In short, our design baseline is clear: any frequently maintained part must be serviceable by ordinary workers using basic tools within two hours. We built this machine as a truly reliable production workhorse—powerful yet easy to maintain for worry-free operation.
