A jaw crusher is a primary crushing machine commonly used in the processing of concrete aggregates (crushed stone, gravel, or recycled concrete). It works by compressing material between two jaws—one fixed and one moving—to break large chunks into smaller, usable sizes.
Key Features of a Jaw Crusher for Concrete Aggregates:
1. Crushing Mechanism:
– The movable jaw exerts force on the concrete by pressing it against the fixed jaw.
– Ideal for hard, abrasive materials like concrete with embedded rebar or rocks.
2. Output Size Control:
– Adjustable discharge opening to produce different aggregate sizes (e.g., 20mm, 40mm).
– Suitable for producing base material, drainage layers, or recycled concrete for new construction.
3. Durability & Wear Resistance:
– High manganese steel jaws withstand abrasion from concrete crushing.
– Some models have hydraulic adjustment for quick setting changes.
4. Applications:
– Recycling demolition waste (concrete blocks, slabs).
– Quarrying natural stone for construction aggregates.
5. Types of Jaw Crushers for Concrete:
– Single-toggle: Efficient for softer materials but less robust for heavy-duty concrete.
– Double-toggle: Better for hard, abrasive concrete but more complex mechanically.
.jpg)
Advantages Over Other Crushers:
✔ Better at handling large chunks of uncrushed concrete.
✔ Lower operating costs compared to impact crushers (for primary crushing).
✔ Can process reinforced concrete (though metal separation may be needed afterward).
Limitations:
✖ Not ideal for final shaping (cone/impact crushers are better for finer aggregates).
✖ Requires pre-screening if feed contains excessive fines or dirt.
Would you like recommendations on specific models or maintenance tips?
Leave a Reply