Double roll crushers (especially double-tooth roll crushers) have demonstrated outstanding performance in asphalt crushing, with their effectiveness primarily manifested in the following aspects:
1. Superior Crushing Quality
Uniform particle size and low fine powder rate
Double-tooth roll crushers crush asphalt through the squeezing and shearing action of the tooth rolls, with controllable output particle size (typically 10-200 mm), and well-formed particles with low over-crushing rates
Preservation of Aggregate Original Structure
Using a “flexible crushing” process, it avoids secondary damage to aggregates caused by impact crushing, ensuring that the angularity and mechanical properties of asphalt aggregates are not compromised, thereby enhancing the road performance of recycled materials
No blockage of sticky materials
Special tooth designs (such as wolf teeth or sharp wavy teeth) enhance tearing capability for viscous asphalt, combined with hydraulic adjustment of roller spacing to effectively prevent material from sticking to rollers or causing blockages.
2. Processing Efficiency and Environmental Performance
High efficiency and energy savings
Low-speed, high-torque design reduces energy consumption (30% more energy-efficient than traditional equipment), with single-unit production capacity ranging from 5 to 2,000 tons per hour, suitable for large, medium, and small-scale projects.
For example
small machines (such as the 2PGC400×250) have an hourly production capacity of 7 to 15 tons, while large machines (such as the 2PGC1200×1500) can reach 200 to 300 tons per hour.
Environmental Protection and Low Noise
Closed-structure design minimizes dust leakage; when combined with a dust collection system, dust emissions are reduced by 40%-60%; operating noise level ≤75dB, compliant with construction site environmental standards
3. Durability and Maintenance Convenience
Wear-resistant design
The roller shells are made of high-chromium manganese steel and other wear-resistant alloys (with a lifespan twice that of ordinary materials), suitable for high-wear environments with sand and gravel in asphalt.
Intelligent maintenance
The hydraulic system automatically adjusts roller spacing and pressure; overload protection functionality can reverse to remove foreign objects;
Modular design supports quick replacement of teeth; daily maintenance only requires regular lubrication and screen cleaning.
4. Application Scenarios and Model Recommendations
| Project Scale | Recommended Model | Production Capacity (t/h) | Output Particle Size (mm) | Features |
| Municipal patching | 2PGC400×250 | 7-15 | 10-50 | Small footprint, suitable for narrow spaces |
| Medium-sized road repair | 2PGC600×900 | 80-120 | 30-150 | alances efficiency and mobility |
| Large-scale regeneration projects | 2PGC1200×1500 | 200-300 | 30-200 | High productivity, automated control |
| High-fineness powder control requirements | Customized wolf tooth roller | 150-200 | 20-40 (graded) | Powder output rate < 10% |
Summary
Double-roll crushers, with their precise particle size control, low fine powder rate, high wear resistance, and energy-efficient and environmentally friendly characteristics, have become the ideal equipment for asphalt recycling. Among these, double-tooth roll crushers (especially wolf tooth-type) perform optimally in processing sticky milled materials, while brands like Huashengming, with their durable roll casing materials and flexible models (such as the 2PGC series), have become the industry’s top choice.
