The 1200 primary impact crusher is a heavy-duty machine designed for the initial stage of crushing large and abrasive materials such as stone, ore, and concrete. The term “1200” typically refers to the rotor diameter or feed opening (1200 mm), which allows it to handle massive feed sizes.

2. Structure

  • Large Feed Opening: Accommodates large rock blocks.

  • High-Speed Rotor: Throws material forcefully against impact plates.

  • Adjustable Impact Curtains: Enables control of output size.

  • Wear-Resistant Liners: Protects against abrasive wear.

  • Hydraulic Opening System: Facilitates maintenance and inspection.

3. Working Principle

  1. Material enters through the feed opening.

  2. The rotor, equipped with blow bars or hammers, propels the material against stationary impact plates.

  3. The impact breaks the material into cubic-shaped particles.

  4. Re-circulation is possible for further size reduction.

  5. Crushed product exits from the bottom.

4. Advantages

  • High crushing efficiency and throughput

  • Produces uniform, cubic aggregates

  • Adjustable final product size

  • Ideal for concrete and asphalt recycling

  • Compatible with automation and control systems

5. Application Areas

  • Quarry operations (granite, basalt, limestone)

  • Aggregate production plants

  • Construction and demolition waste recycling

  • Civil engineering projects (dams, roads, railways)

  • Mining operations (metallic ores, coal, etc.)