A sawdust briquette machine—often referred to as a sawdust log maker—is specialized biomass equipment that compresses loose wood waste (sawdust, shavings, agricultural residues) into uniform, high-density briquettes suitable for fuel applications . These briquettes can burn cleaner and hotter than traditional firewood due to their low moisture content and high compactness. At Weiwa Machinery, we specialize in providing top-tier solutions like the Sawdust Briquette Machine to help businesses turn waste into wealth.
- Screw Press vs. Piston Press: Screw-type extruders produce hollow, hole-through briquettes, increasing combustion efficiency, while piston presses yield solid blocks without central holes.
- Lignin Binding: High pressure and temperatures (typically around 280 °C) melt natural lignin in the sawdust, binding particles without added adhesives .
How It Works
Preparation of Raw Material
- Raw sawdust must be milled to < 5 mm particle size and dried to moisture < 12% for optimal briquetting .
- Optional pre-dryers and crushers ensure consistent feedstock quality .
Heating & Extrusion
- The machine’s heating rings raise the chamber temperature to ~ 280 °C, activating lignin .
- A rotating screw pushes material through a hardened steel mold under high pressure, forming logs of 50–70 mm diameter .
Cooling & Collection
- Briquettes exit the mold and quickly cool, solidifying into durable fuel logs ready for storage or carbonization into charcoal .
Charcoal made from Sawdust Log Maker
Key Features & Components
Core Components
- Spiral Propeller (Screw): Drives raw material forward; made from wear-resistant Cr40 steel for longevity .
- Heating Elements: External coils maintain stable temperatures; replacement coils recommended as spare parts .
- Molding Sleeves: Interchangeable hexagonal or square dies (4.8–5 cm) determine briquette shape and density .
- Motor & Drive System: Copper-core motors (18.5–22 kW) ensure high torque and extended service life .
Benefits of Using a Sawdust Briquette Machine
Economic Advantages
- Low Investment & Operating Costs: Core machinery investment is modest; power consumption ~ 11 kW for extrusion, total line ~ 26 kW, translating to 180–200 kWh/day .
- High Profit Margins: Briquettes can fetch higher prices than raw sawdust, creating new revenue streams.
- Business Opportunity: Compact production lines fit small to large-scale operations, enabling entrepreneurs to turn waste into marketable fuel.
Environmental & Operational Gains
- Eco-Friendly Fuel Substitute: Briquettes emit 13.8–41.7% less CO₂ and NOₓ than coal, reducing greenhouse gases.
- Sustainable Waste Management: Converts agro-forestry residues into value-added products, alleviating landfill pressure.
- High Heating Value: Briquettes deliver 19.3–20.5 MJ/kg, higher than many fossil fuels.
Applications of Sawdust Briquettes
- Residential & Commercial Heating: Efficient for stoves, fireplaces, and district heating.
- Industrial Boilers & Power Plants: Co-firing with coal or as standalone fuel in biomass-dedicated boilers.
- Charcoal Production: Further processing in machines like our Sawdust Charcoal Making Machine yields high-quality charcoal.
- Animal Bedding & Feed Additives: Pelletized sawdust briquettes can serve as livestock bedding or feed supplements in pastoral applications.
Choosing the Right Sawdust Log Maker
When selecting a sawdust log maker, consider:
- Material Type: Ensure compatibility with your biomass source.
- Production Capacity: Match the machine’s output with your energy needs.
- End Use: Determine if the briquettes will be used directly or further processed.
For those looking to produce charcoal briquettes, our Charcoal Briquettes Making Machine offers an integrated solution.
About Weiwa Machinery
Weiwa Machinery is a leading provider of biomass processing equipment, specializing in turnkey sawdust briquette machines designed for reliability, efficiency, and ease of maintenance. With years of R&D and hundreds of successful installations worldwide, Weiwa delivers tailored solutions that meet your capacity, automation, and budget requirements. Our range of products, including the Wood Charcoal Making Machine, is designed with efficiency and environmental responsibility in mind.
Ready to transform your biomass waste into valuable energy? Contact our sales team today for a free consultation and quote:
- WhatsApp: +8613838093177
- Email: info@cjlmachinegroup.com
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