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Exim Advantage with Biomass Briquettes

Biomass briquettes are reshaping the energy trade landscape. Crafted from organic residues like sawdust, rice husk, and nut shells, these compact fuel blocks deliver consistent performance and eco-friendly credentials. For exporters and importers, understanding key product metrics ensures a competitive edge.

Product Knowledge: Core Technical Figures

Moisture Content and Water Activity

Top-quality briquettes hold moisture between 5–10 %, enabling efficient combustion and preventing microbial growth

Calorific Value (Heating Potential)

  • Standard rice husk briquettes: 14,300–14,500 kcal/kg (≈59–61 MJ/kg) .

  • Cashew shell briquettes: 29.5 MJ/kg (~7,050 kcal/kg) with low moisture (5.3 %) and ash (4.96 %)

Ash Content

Low ash output is critical for boiler efficiency:

  • Adhesive-enhanced briquettes record 5–8 % ash, depending on binders

  • Cashew shell briquettes report a cleaned ash of 4.96 %, meeting major SNI and ISO standards

Fixed Carbon and Volatile Matter

  • High-grade briquettes show fixed carbon of 74 %–75 % and volatile matter around 14 %

  • Volatiles (17 %) are acceptable in premium briquettes such as cashew shell variants .

Density and Durability

Densification ensures consistent density (~1 t/m³ for extrusion types) and integrity during shipping .

Ignition and Burn Rates

Briquettes ignite in 66–111 seconds with burn durations of 27–39 minutes depending on biomass blends

Advanced Features: Torrefaction and Extrusion

Torrefied briquettes offer a step-up in performance:

  • Lower heating value reaches 20–21 GJ/ton (~5,500–5,800 kcal/kg), become hydrophobic, and resist spoilage

  • Extruded forms with density 1.0–1.2 t/m³ provide stable size and uniform burn characteristics

Export Relevance: Why Metrics Matter

  • Efficiency and cost transparency: Moisture, calorific value, and ash metrics determine energy output per kilogram—essential for client cost calculations.

  • Regulatory compliance: Standards like SNI, ISO 17225, and Japanese/Japanese-English benchmarks demand moisture < 10 %, ash < 7 %, and calorific value > 5 000 kcal/kg

  • Logistics and reliability: High density, uniform durability, and hydrophobic traits reduce transport costs and strengthen shelf resilience.

Strategic Export Recommendations

  1. Test rigorously: Include moisture, heating value, ash, and fixed carbon reports in every shipment.

  2. Choose best biomass and binder mix: Optimize for low ash and high calorific output.

  3. Consider torrefaction/extrusion steps: For premium markets, offer hydrophobic and dense briquettes.

  4. Highlight standards: Emphasize compliance with global norms (ISO/SNI/JIS) in spec sheets.

  5. Provide traceable specs: Use batch-coded, sealed samples with lab reports accompanying each FOB container.


By showcasing precise metrics—moisture ≤10 %, calorific value ≥14 000 kcal/kg, and ash ≤5 %—exporters position biomass briquettes as a reliable, high-performance solid fuel. Meeting international standards and packaging these figures boosts buyer trust and opens new export opportunities.

For lab testing setup, spec templates, or export certification support, visit site:exportimport.guru or connect via WhatsApp: https://wa.me/918128111191.


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