Secondary Fine Shredder

The Precision Homogenization System for Refuse-Derived Fuel

Secondary fine shredders transform pre-processed waste into consistent, fuel-grade particles optimized for thermal recovery. These high-performance systems combine precision cutting with advanced classification technology to produce homogeneous RDF/SRF fractions meeting strict quality specifications for alternative fuel applications.

Engineered for Fuel Quality Optimization

The system features a heavy-duty single-shaft rotor with hardened steel cutting tools arranged in a helical pattern for progressive size reduction. The cutting chamber incorporates adjustable breaker plates and precision-ground screen decks that control final particle sizing between 10-50mm. High-torque direct drive systems deliver consistent power transmission while maintaining energy efficiency during continuous operation.

Advanced Particle Control Technology

Multi-stage cutting zones progressively reduce material through shearing and impact forces. The final sizing stage employs a patented particle-on-particle grinding action that homogenizes material density while minimizing fines generation. Integrated air classification removes lightweight contaminants, while magnetic separation ensures minimal metal content in the final product.

Operational Advantages

The shredder achieves bulk density consistency within ±10% of target specifications, critical for fuel handling systems. Automatic gap adjustment maintains optimal cutting geometry as tools wear. Water-cooled bearings allow 24/7 operation without thermal limitations. The system's forced discharge design prevents material buildup while ensuring consistent throughput.

Maintenance for Quality Assurance

Tool rotation every 200 operating hours maintains cutting efficiency. Weekly screen inspection ensures proper sizing control. Monthly vibration analysis predicts bearing maintenance needs. Quarterly calibration of classification systems guarantees fuel quality standards. Modern systems feature automated wear compensation that adjusts operating parameters to maintain product consistency.

Fuel Quality Specifications

The system produces RDF/SRF meeting international standards with: 

• Uniform particle size distribution (85% within target range) 

• Consistent calorific value (14-20 MJ/kg)

• Low moisture content (<15%)

• Minimal contaminants (<0.5% non-combustibles)

• Optimal bulk density (0.3-0.6 t/m³)