An impact crusher is a machine designed to break materials (e.g., rocks, concrete, recycled asphalt) using impact force rather than compression. It is widely used in mining, construction, and recycling industries due to its ability to produce uniform, cubical-shaped aggregates.

Key Features:

  1. Mechanism:

    • High-speed rotor with blow bars (hammers) strikes incoming material.

    • Material is shattered against impact plates or anvils, creating smaller particles.

  2. Adjustable Output:

    • Control over product size via adjustable rotor speed, impact plate gap, and blow bar configuration.

  3. High Reduction Ratio:

    • Can reduce large feed material (up to 1,500 mm) to fine outputs (≤40 mm) in a single stage.

  4. Cubical Product Shape:

    • Ideal for concrete and asphalt production due to angular, uniform aggregates.

  5. Versatility:

    • Processes soft to medium-hard materials (limestone, coal, recycled concrete) and abrasive stones.

  6. Low Operational Costs:

    • Simple design with fewer wear parts compared to cone crushers.

Advantages:

  • Suitable for both primary and secondary crushing.

  • Energy-efficient due to direct impact force.

  • Easy maintenance (replaceable blow bars and impact plates).

  • Compact design for mobile or stationary setups.

Applications:

  • Quarrying (limestone, granite).

  • Recycling (concrete, asphalt).

  • Aggregate production for roads and railways.

  • Coal crushing in power plants.