A Horizontal Shaft Impact Crusher (HSI) is a type of rock crusher that uses a high-speed rotating rotor with hammers (blow bars) to throw material against impact plates, breaking it into smaller pieces. It is ideal for processing medium-hard to hard materials like limestone, granite, and recycled concrete.

Purpose

  • Aggregate Production: Produces cubic-shaped aggregates for construction.

  • Recycling: Processes demolition waste into reusable materials.

  • Size Reduction: Reduces material to fine fractions (e.g., 0-25 mm).

  • High Efficiency: Achieves multiple crushing effects with a single rotor, saving energy.

How It Works

  1. Feeding: Material is fed into the crushing chamber via a hopper.

  2. Acceleration and Impact: Rotor hammers fling material against impact aprons at high velocity (50-70 m/s).

  3. Fragmentation: Material breaks upon collision with aprons and other particles.

  4. Screening (Optional): Integrated screens classify output; oversized particles recirculate.

  5. Discharge: Crushed material exits via a discharge conveyor.

Technical Specifications:

  • Rotor Size: Determines capacity (e.g., 1000x1200 mm).

  • Power Requirement: 150-500 kW motor.

  • Max Feed Size: 200-500 mm.

  • Output Size: Adjustable (typically 0-40 mm).

Advantages

  • Cubic Output: Produces angular aggregates, enhancing concrete strength.

  • Adjustability: Easy control over product size via apron settings and rotor speed.

  • Low Operating Costs: Fewer wear parts and lower energy consumption.

  • Compact Design: Suitable for mobile or stationary setups.

Applications

  • Quarries: Crushing limestone, basalt, and granite.

  • Cement Plants: Pre-grinding size reduction of raw materials.

  • Recycling Plants: Processing concrete and asphalt debris.

  • Mining: Pre-crushing ores for beneficiation.