Biomass pellet mill
Diverse Raw Materials
Biomass pellet mills efficiently process a wide range of renewable biomass wastes and compress them into high-density fuel pellets. Specifically, they can be divided into the following four categories:
Wood Materials
Primary raw materials include logs, branches and wood chips. Featuring high bulk density and compact fiber structure, wood-based materials produce pellets with high calorific value and remain the mainstream feedstock in the global biomass pellet market.
Crop Straw Materials
Agricultural residues such as corn stalks, wheat straw and rice straw are lightweight, bulky with long fibers and high toughness, requiring primary crushing prior to pelleting. Stalk pelleting effectively curbs air pollution caused by open-air burning.
Rice Husk Materials
As a by-product of rice processing, rice husk features low raw material cost and acts as a vital supplementary feedstock for regional biofuel production. Pre-treatment or blending with wood meal and stalk powder is commonly required before pelleting.
Alfalfa Materials
Our equipment can process alfalfa, oat grass, and other high-protein, high-fiber forage raw materials into high-density pellets, which can be used as high-quality biomass fuel or as high-nutrition feed pellets for ruminants.
Versatile
All-Scenario Use
RICHI biomass pellet mills specialize in high-fiber raw materials, transforming seemingly “misplaced resources” such as sawdust, straw, and rice husks into high-value pellet products.
●Global
Wood Processing & Furniture Factory
The woodworking industry generates massive sawdust and wood residues annually. Traditional disposal methods are costly and polluting. Equipped with 8-pole low-speed motors and 42CrMo alloy ring dies, RICHI pellet mills convert wood waste into high-calorie fuel pellets for factory heating or sales to boost profits.
- Customer output : 0.5-4 t/h
- Application : Wood pellets for heating & industrial boilers
●Europe
Biomass Energy Company
Biomass energy enterprises process sawdust, crop straw and rice husk to produce premium pellets meeting ENplus standards. RICHI biomass pellet lines are equipped with hammer mills, rotary dryers, forced feeders and heat-sealing packaging systems, making pellets suitable for sea transportation and long-term storage.
- Customer output : 1-10 t/h
- Application : Fuel pellets for power plants & home heating
●Global
Agricultural Waste Recycling Center
Open burning of crop straw causes severe pollution, prompting governments worldwide to promote straw recycling. Fitted with grinders and forced feeders, RICHI machines process long-fiber straw into fuel pellets or roughage for ruminants, helping businesses gain environmental subsidies and economic benefits.
- Customer output : 0.5-8 t/h
- Application : Straw pellets for combustion or roughage
●Southeast Asia
Palm Oil Companies
Palm oil production generates large quantities of empty fruit bunches (EFB). Traditional landfilling and burning cause serious pollution and resource waste. Our EFB pellet lines produce low-chlorine, eco-friendly pellets with heat value close to coal but far lower carbon emissions, enjoying strong advantages in EU carbon trading markets.
- Customer output : 2-10 t/h
- Application : EFB pellets for boiler fuel
Biomass pellet mills of various production scales
Our full line of biomass pellet mills includes specialized models tailored for wood pelleting, stalk and forage processing, perfectly adapting to the physical characteristics of different raw materials.
Heavy-duty Drive System
High Wear Resistance & Long Service Life
Grass Material Crusher
Wide Raw Material Compatibility
Capacity Powerhouse
Forage Pellet Specialist
Biomass pellet mill Production line solution
For biomass raw materials such as sawdust and straw, we provide fully automated production line solutions from raw material processing to finished pellets.
Wood Pellet Production Line
The pellet mill adopts a 6-8 grade high torque motor, which is suitable for pressing high fiber materials. The entire production line includes processes such as chipping, crushing, drying, pelleting, cooling, screening, and packaging. It can efficiently utilize forestry waste and process high fiber and low moisture wood raw materials into clean fuel with high calorific value and low pollution.
Core gear : MZLH Series
Ingredients : Forestry residues
Straw Pellet Production Line
The straw pellet production line includes a complete set of equipment for processing crop straw into biomass combustion pellets or ruminant feed pellets. The pelleting section uses a straw-specific crusher and a drum dryer. The heat source can be a biomass burner or gas. It is suitable for straw raw materials with high moisture content and strong fiber.
Core gear : CZLH & MZLH
Ingredients : Crop straw
Rice Husk Pellet Production Line
It is specially designed for processing light-weight and high-fiber raw materials such as rice husk, efficiently compressing them into dense fuel pellets with high calorific value. Each unit comes standard with arch-breaking and forced feeders, and is fitted with wear-resistant alloy steel ring dies, greatly enhancing the equipment’s durability and anti-clogging performance.
Core gear : MZLH Series
Ingredients : Rice bran
Alfalfa Pellet Production Line
Specifically designed for leguminous forage, equipped with a forced feeding mechanism and pneumatic conveying system. The entire line can be optionally equipped with a steam conditioner and oil spraying system to improve pellet quality and production efficiency. Suitable for forage growing areas, feed processing plants, and biomass energy companies.
Core gear : CZLH Series
Ingredients : Alfalfa, clover
About RICHI Machinery
Based in China and serving global markets, RICHI Machinery is a global manufacturer and engineering service provider specializing in pellet production equipment and complete processing systems. From feed, biomass, and organic fertilizer to cat litter and agricultural waste recycling, we help customers build efficient, reliable, and scalable production solutions tailored to their raw materials, capacity requirements, and market goals. With projects delivered across multiple industries and countries, our focus is always on practical performance, long-term operation, and customer success.
Advanced Engineering & Intelligent Manufacturing
Driven by technology and manufacturing expertise, RICHI integrates process engineering, equipment R&D, intelligent manufacturing, and project delivery into one complete service system. Our modern production facilities, precision machining capabilities, and experienced technical team allow us to provide customized equipment, complete plant design, automation integration, installation guidance, and ongoing technical support. From single machines to fully integrated production lines, we deliver solutions designed for stability, efficiency, and sustainable production growth.
Frequently Asked Questions
The following is a summary of frequently asked questions regarding configuration, installation, after-sales service, pricing, and complete plant setup, to help you quickly understand RICHI products.
Are wood pellet mills and stalk pellet mills interchangeable?
They can be used interchangeably in general scenarios, yet with significant output discrepancies. Due to distinct physical properties, dedicated stalk/forage pellet mills (CZLH Series) deliver 50%-100% higher output than wood pellet mills (MZLH Series) under the same power rating. We strongly recommend selecting a dedicated model according to your primary raw material for optimal return on investment.
Ring dies are vulnerable wearing parts. How do you guarantee their service life?
Our ring dies are manufactured with internationally advanced processing technology and precision machining equipment, adopting premium 42CrMo alloy steel and strict vacuum heat treatment. This significantly enhances hardness, wear resistance and fatigue strength. Meanwhile, customized ring die compression ratios are designed for different raw materials such as wood and stalks to maximize service life.
What safety protection features are equipped on the machine?
The equipment is equipped with a multi-level safety protection system. The feed inlet is equipped with an iron removal device to prevent metal debris from entering; the main drive has overload protection, automatically cutting off power and alarming in case of abnormal overcurrent. The electrical control cabinet uses star-delta starting to reduce motor starting impact. All maintenance doors are equipped with safety limit switches to comprehensively ensure operator safety.
Can wet wood chips be directly used for pelleting?
Direct pelleting is not feasible. Raw materials with moisture content above 50% must be processed via a drying system to reduce moisture to the optimal range of 15%–18%. Excessive moisture acts as a lubricant, preventing effective extrusion inside the ring die and resulting in extremely low output or even no pellet discharge. A rotary drum dryer is mandatory if your raw materials are high in moisture.
What is the overall height of the full production line?
The standard fully automatic production line has a designed overall height of around 12 meters. For factories with height limitations, we recommend a semi-automatic production line solution. This design separates crushing, drying and pelleting sections with material stockpile transfer, greatly lowering height requirements and fully adapting to 6-meter factory ceilings. The only trade-off is slight additional manual material handling.
What is the minimum requirement to start a commercial animal feed production project with RICHI?
We only focus on large-scale farming animal feed projects and commercial feed production projects. If you are looking for a small machine to produce your own animal feed at home, we are not the right choice – we would rather tell you upfront to save your time.Our configuration include small-scale equipment for crushing, mixing, granulating, etc. If you are unsure of your specific requirements, just send us your basic requirements. We will give you a direct response.
