Impact crushers are a type of rock crusher that use high-speed impact force to break down materials. They are widely used in aggregate production, mining, recycling, and construction due to their efficiency in crushing various materials, including limestone, concrete, asphalt, and recycled demolition debris.
Types of Impact Crushers:
1. Horizontal Shaft Impactors (HSI)
– Use a horizontal rotor with hammers/blow bars to strike the material.
– Ideal for softer materials (limestone, recycled concrete).
– Examples: Nordberg NP Series, Metso Lokotrack LT1213.
2. Vertical Shaft Impactors (VSI)
– Use a vertical rotor that throws material against anvils or other particles.
– Best for producing high-quality cubical aggregates (sand & gravel).
– Examples: Barmac B-Series, Sandvik CV200.
Key Features & Benefits:
✔ High Reduction Ratio – Can crush large feed sizes into smaller particles in one pass.
✔ Cubical Product Shape – Produces well-shaped end products ideal for construction.
✔ Adjustable Settings – Control over output size via rotor speed and impact aprons.
✔ Low Operational Costs – Energy-efficient compared to jaw/cone crushers for certain materials.
Common Applications:
– Quarrying & mining (primary/secondary crushing)
– Recycling (concrete, asphalt demolition waste)
– Sand & gravel production (VSI crushers)
Limitations:
❌ Higher wear on blow bars/hammers with abrasive materials.
❌ Not ideal for very hard rocks like granite without proper configuration.
Would you like recommendations for specific models or brands based on your application?
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