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Product Introduction
Our Double Roller Crusher for Construction Waste Recycling (also known as a twin roll crusher) is a highly reliable, heavy-duty crushing machine purpose-built for urban renewal and environmental recycling initiatives. It is specifically engineered to process tough, mixed construction and demolition (C&D) waste, including concrete blocks, bricks, asphalt pavement, roof tiles, and glass. Unlike traditional impact crushers that suffer extreme wear from abrasive materials, or jaw crushers that easily clog with wet debris, this equipment delivers stable, high-efficiency reduction with minimal dust, transforming bulky construction debris into high-quality recycled aggregate.
Technical Performance
Applicable Materials: Concrete debris, bricks, masonry blocks, asphalt, ceramics, glass, and mixed demolition waste.
Production Capacity: Designed for versatile operations, offering outputs from 5 to over 100 tons per hour depending on configuration.
Feed Size Acceptance: Capable of handling mixed, irregular materials up to 40mm–100mm (Depending on the specific roller model and tooth profile).
Adjustable Output Size: The gap between the rollers is highly adjustable, allowing operators to fine-tune the final recycled aggregate from less than 2mm up to 20mm.
Moisture Resilience: Highly effective for both dry and wet materials; the scraping and squeezing action completely prevents clogging when processing muddy or wet construction debris.
Working Principle
The double roller crusher relies on high-torque, low-speed compression and shearing forces to break down rigid materials:
Material Regulated Feeding: Construction waste is fed into the V-shaped crushing chamber directly above the two parallel rollers.
High-Pressure Counter-Rotation: Driven by heavy-duty motors, the two high-strength steel rollers rotate toward each other. The incoming rubble is drawn into the gap between them by friction.
Extrusion & Shearing: As the waste passes through the wedge-shaped gap, the immense mechanical squeeze and shear force instantly crush the concrete and bricks into smaller fragments.
Safety Discharge: Crushed aggregate falls by gravity out of the bottom of the machine onto a discharge conveyor. If an unbreakable object (like a stray piece of structural steel or rebar) enters the chamber, the built-in safety spring or hydraulic system automatically allows one roller to retreat, widening the gap to let the foreign object pass safely without damaging the machine.
Key Features & Advantages
High Wear Resistance (Long Lifespan): The roller shells are cast from ultra-tough manganese steel or specialized chromium alloy. This ensures excellent resistance to the highly abrasive nature of concrete and silica-heavy bricks.
Low Dust & Low Noise Operation: Operating at a lower RPM (rotations per minute) than impact or hammer crushers, it generates significantly less airborne dust and structural vibration, making it ideal for urban or eco-sensitive recycling yards.
Overload Hydraulic/Spring Protection: Equipped with an automated buffer system that handles accidental uncrushable materials (like large bolts or tramp iron), preventing catastrophic gear or motor failure.
Uniform Product Sizing: The precise control over the roller gap ensures a highly uniform, cubical shape for the final recycled aggregate, which is highly preferred for making recycled concrete or road base.
Minimal Maintenance Costs: The simple, robust mechanical design features fewer moving parts than complex impactors, resulting in dramatically lower routine maintenance costs and reduced operational downtime.
Applications: Widely used in urban C&D waste recycling plants, road construction projects (for on-site asphalt recycling), concrete batching plants utilizing eco-aggregates, and environmental remediation sites.
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