Straw Pellet Mill
RICHI MZLH straw pellet mill is special ring die pelleting equipment customized for light, fluffy, high-fiber agricultural crop residues. It converts corn stalk, wheat straw, rice straw, cotton stalk, alfalfa and other farm waste into solid cylindrical pellets.
According to different customer needs, RICHI designs different equipment models.
Straw Pellet Mill for Sale
This set of equipment largely solves straw disposal problems and creates extra stable profit sources for growers.
Finished straw products
The finished straw pellets specifications:
- Shape: Solid cylindrical, length adjustable by cutting blade;
- Advantages: High density, low transportation volume, no need for chemical binders, dual-purpose for fuel and animal feed;
- Export standard: Complete supporting pretreatment and dust removal systems can produce pellets that meet EU ENplus certification standards;
Pellet Diameter: 4.0-12.0 T/H
Output: 0.5-8.0 T/H
According to different customer needs, RICHI designs different equipment models.
Equipment Structure
Arch-breaking Forced Feeding Bin
Straw powder has extremely low bulk density and easily forms bridging blockage inside silos. Standard vibratory arch breaker and mechanical forced feeding device ensures continuous and uniform feeding without shutdown caused by material hanging.
High-hardness Alloy Ring Die & Roller Assembly
Straw contains high silicon which easily causes severe abrasion. The thickened heat-treated alloy mold extends the service life of wearing parts by over 30% compared with ordinary carbon steel molds. Ring dies with 4–12 mm apertures are interchangeable for different pellet sizes.
Steam Conditioner
High-temperature steam softens straw fiber and activates internal natural lignin for self-bonding without extra glue. Temperature can be adjusted separately for feed pellets and fuel pellets.
SKF Heavy-Load Bearing
High-precision SKF heavy-duty bearings are adopted for the main transmission unit. They greatly cut down friction loss, reduce breakdown frequency and enhance the overall reliability during large-scale production.
Adjustable Pellet Cutting Mechanism
Freely control pellet length to reduce broken particles and improve finished product appearance.
According to different customer needs, RICHI designs different equipment models.
Straw Pellet Machine for Sale
Technical parameters of biomass pellets machine for straw.
Various Capacities Of Straw Pellet Machine
| Model | CZLH320 | CZLH350 | CZLH420 | CZLH520 | CZLH678 | CZLH768 |
| Main Motor Power(kw) | 22 | 37 | 90 | 132 | 200 | 250 |
| Arch-breaking Feeder Power(kw) | 2.2 | 2.2 | 3 | 3 | 3 | 4 |
| Forced Feeder Power(kw) | 0.75 | 0.75 | 1.5 | 1.5 | 1.5 | 1.5 |
| Ring Die Diameter（mm） | 320 | 350 | 420 | 520 | 673 | 762 |
| Finished Pellet Diameter(mm) | 4~12 | |||||
| Capacity（T/H） | 0.5-0.6 | 1.0-1.2 | 1.8-2.0 | 2.8-3.0 | 4-5 | 6-8 |
On-site Running Display
RICHI features spacious factory premises, a tidy office environment and complete production lines.
Why choose RICHI？
Great enterprise, quality products, tangible strength.
South African straw pelleting production line
RICHI’s equipment is capable of producing high-quality and efficient straw pellets.
Core Advantages
The staw pellet mill possess a range of core advantages for production applications.
RICHI Crafted, Fully Trusted.
Success Stories
RICHI has accumulated numerous successful project cases through our dedicated full-service support.
Iowa, USA
2 t/h Corn Straw Fuel Pellet Line, Iowa, USA
- Raw material: Air-dried corn stalk from local farmland Capacity: 2 t/h, pellet diameter 8 mm
- Core equipment: Straw cutter, straw crusher, rotary dryer, MZLH420 pellet mill, counter-flow cooler, auto packing scale
- Project Introduction: Local biomass power plants sign long-term purchasing contracts for straw fuel pellets. The complete line can process over 10,000 tons of straw yearly, fully complying with power plant calorific value standards.
Alberta, Canada
3 t/h Wheat Straw Feed Pellet Line, Alberta, Canada
- Raw material: Wheat straw
- Capacity: 3 t/h, pellet diameter 6mm Core equipment: Special straw crusher, MZLH520 pellet mill with forced feeder, cooling and full packaging system
- Project Introduction: The conditioner runs at low temperature to retain straw nutrition as cattle supplementary roughage. Self-made feed pellets cut breeding cost by more than 20% compared with purchased hay.
New South Wales, Australia
4 t/h Rapeseed Straw Export Fuel Pellet Line, New South Wales, Australia
- Raw material: Rapeseed stalk Capacity: 4 t/h, pellet diameter 8 mm
- Core equipment: Crusher, dryer, MZLH678 pellet mill, cooling and automatic packing unit
- Project Introduction: Rapeseed straw has higher oil content to lift pellet calorific value. Supporting cleaning and dust removal systems control ash and chlorine content to meet EU import ENplus standards for European biofuel export.
Supporting Production Line
Raw Material Preprocessing
Unpack straw bales and cut overlong stalks. Remove stones, soil and iron wires through cleaning screen and magnetic separator to avoid scratching ring dies and rollers.
Drying
Fresh harvested straw moisture reaches 20%–40%, while pelleting standard moisture is 15%. Too much moisture leads to loose pellets, cracking and mildew. Dryers are necessary in rainy humid areas; natural air drying is acceptable in dry harvest zones.
Pelleting
Anti-bridging forced feeding system solves straw blockage. Steam conditioner softens straw lignin for natural adhesion. High-pressure extrusion through ring die holes, then cut into uniform pellets by blades. Dry pelleting without steam is available but brings lower output and softer pellets.
Counter-flow Cooling
New pellets discharge at 70–80℃. Cooler reduces temperature and stabilizes moisture to harden pellets and prevent mildew during storage.
Vibrating Screening
Sift out powder and broken fragments; fine materials are recycled back to pellet mill for reprocessing to realize zero waste.
Automatic Packing
Qualified pellets are temporarily stored in the finished product bin, then automatically weighed and sealed into standard bags by the packaging machine for warehouse stocking or commercial export.
RICHI equipment delivers reliable performance anywhere.
Application Scenarios
Biomass Fuel Supply
Used for household heating stoves, factory industrial boilers and biomass power stations. Main export markets: EU, USA, Canada, Australia. Supported by local carbon trade and renewable energy subsidies, market demand remains strong.
Livestock Supplementary Roughage
For cattle, sheep, dairy cow breeding ranches in North America, Australia and Argentina. Solves winter pasture shortage, convenient for storage and long-distance transportation.
District Centralized Heating Raw Material
Agricultural cooperatives collect straw from surrounding villages to produce heating pellets for urban community heating projects in Europe.
RICHI Crafted, Fully Trusted.
Core Advantages of RICHI
Reliable, hassle-free and reassuring — these are the hallmarks of RICHI.
Your challenges, our solutions.
FAQs
Should you have any questions, RICHI will provide you with professional answers.
What’s the difference between feed-grade and fuel-grade straw pellet production?
The main machines are identical; only conditioner temperature differs. Feed pellets use 80–90℃ low temperature to retain nutrition; fuel pellets adopt higher temperature to fully soften lignin for higher pellet density and hardness.
How to deal with fresh straw with super high moisture?
Pre-drying is compulsory. Rotary dryers reduce moisture from 30%–40% to the optimal 15%. Natural air drying is feasible in arid regions but needs large storage yards; dryers are essential for rainy humid areas.
How long is the service life of ring die?
Service life varies by raw material. Straw with high silicon causes faster abrasion than wood. RICHI high wear-resistant alloy ring die has better cost performance than ordinary molds and can be shipped globally as spare parts.
