A mobile crusher is a portable system designed to crush, size, and classify rocks and aggregates. Unlike fixed plants, mobile crushers are mounted on tracked or wheeled chassis, enabling easy relocation between sites. They are ideal for quarries, construction projects, and recycling due to their operational flexibility.

Stages of Mobile Crushing:

  1. Primary Crushing:

    • Large rocks (≈1 m diameter) are reduced to 150-300 mm using jaw crushers or impact crushers.

  2. Screening (Pre-Screening):

    • After primary crushing, materials pass through vibrating screens. Oversized particles proceed to secondary crushing, while correctly sized aggregates are stockpiled.

  3. Secondary Crushing:

    • Cone crushers or secondary impact crushers further reduce material to 20-100 mm for improved aggregate quality.

  4. Tertiary Crushing:

    • Vertical shaft impactors (VSI) produce finely shaped cubic aggregates (0-32 mm).

  5. Final Screening and Stockpiling:

    • Aggregates are classified into sizes (gravel, sand) via screens and transported via conveyors to storage areas.

Mobile Crusher for Quarries:
In quarries, mobile crushers are positioned close to extraction points, minimizing haulage distances. Tracked units navigate rough terrain, and the system adapts as the quarry face advances. A typical setup combines a mobile jaw crusher (primary) with a cone crusher (secondary). Benefits include:

  • Reduced transportation costs,

  • Quick setup,

  • Lower environmental impact (less truck movement).