A Secondary Impact Crusher is a type of crushing machine used in aggregate production, kitar semula, and mining operations to reduce the size of materials after primary crushing. It is designed to handle softer to medium-hard materials (mis., batu kapur, asfalt, konkrit, sisa perobohan) and produce a more uniform, cubical end product compared to primary crushers.

Key Features of a Secondary Impact Crusher:
1. Tujuan:
- Further reduces material size after primary crushing (mis., jaw or gyratory crusher).
- Ideal for producing high-quality, well-shaped aggregates for construction (jalan, konkrit).

2. Working Principle:
- 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. Kelebihan:
- Produces a more uniform, hasil kubus (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. Kekurangan:
- Higher wear on blow bars compared to compression crushers (mis., penghancur kon).
- Not ideal for very hard or highly abrasive materials (mis., granit).

5. Aplikasi biasa:
- Menghancurkan batu kapur, konkrit kitar semula, asfalt, dan serpihan perobohan.
- Aggregate production for road base, Ballast kereta api, dan isian pembinaan.

6. Types of Secondary Impact Crushers:
- Impak aci mendatar (HSI): Most common for secondary crushing; material is fed horizontally into the rotor.
- V

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

Comparison with Other Crushers:
| Ciri | Crusher impak sekunder | Penghancur kon | Kursus rahang |
||-|--|-|
| Crushing Method | Impact force | Mampatan | Mampatan |
| Bentuk output | Kubik | Flaky/Elongated | Pembolehubah |
| Pakai & kos | Higher wear on blow bars | Lower wear parts | Moderate wear |
| Best