A Secondary Impact Crusher is a type of crushing machine used in aggregate production, reciclaje, and mining operations to reduce the size of materials after primary crushing. It is designed to handle softer to medium-hard materials (p.ej., caliza, asfalto, concreto, residuos de demolición) and produce a more uniform, cubical end product compared to primary crushers.

Key Features of a Secondary Impact Crusher:
1. Objetivo:
- Further reduces material size after primary crushing (p.ej., jaw or gyratory crusher).
- Ideal for producing high-quality, well-shaped aggregates for construction (caminos, concreto).

2. Principio de funcionamiento:
- Uses high-speed impact forces (rotor with hammers/blow bars) to break materials.
- Material is fed into the crushing chamber and struck by rotating blow bars before being thrown against impact aprons/liners for additional fragmentation.

3. Ventajas:
- Produces a more uniform, producto cúbico (better for asphalt and concrete).
- Higher reduction ratio than cone crushers in certain applications.
- Adjustable output size via hydraulic or mechanical settings.
- Handles moderately abrasive materials efficiently.

4. Desventajas:
- Higher wear on blow bars compared to compression crushers (p.ej., trituradoras de cono).
- Not ideal for very hard or highly abrasive materials (p.ej., granito).

5. Aplicaciones comunes:
- Crushing limestone, hormigón reciclado, asfalto, y escombros de demolición.
- Aggregate production for road base, lastre de ferrocarril, y relleno de construcción.

6. Types of Secondary Impact Crushers:
- Impactadores de eje horizontal (HSI): Most common for secondary crushing; material is fed horizontally into the rotor.
- V

ical Shaft Impactors (TODOS): Used for shaping and fine crushing (more common in tertiary stages).

Comparison with Other Crushers:
| Característica | trituradora de impacto secundaria | trituradora de cono | Cursor de mandíbula |
||-|--|-|
| Crushing Method | Impact force | Compresión | Compresión |
| Forma de salida | Cúbico | Flaky/Elongated | Variable |
| Tener puesto & Costo | Higher wear on blow bars | Lower wear parts | Moderate wear |
| Mejor