A mobile stone crushing and screening plant is a portable system designed to crush and classify rocks, minerals, or recycled materials. Mounted on a tracked or wheeled chassis, it integrates jaw crushers, impact crushers, cone crushers, vibrating screens, feeders, and conveyors into a single unit. Unlike stationary plants, it can be rapidly relocated between sites.

2. Purpose

  • On-Site Processing: Eliminates material transportation costs by crushing directly at the source.

  • Versatility: Performs primary, secondary, and tertiary crushing with screening in one system.

  • Recycling: Converts construction waste (concrete, asphalt) into reusable aggregates.

  • Quick Deployment: Operational within 30 minutes to 2 hours.

3. Key Components

  • Chassis: Tracked or wheeled undercarriage for mobility on rough terrain.

  • Crusher Units:

    • Jaw Crusher: Reduces large rocks (1.5 m) to 100-300 mm.

    • Impact Crusher: Crushes medium-hard materials with high cubicity.

    • Cone Crusher: Produces 20-100 mm aggregates for concrete.

  • Screening System: Vibrating screens classify material into 3-4 sizes (e.g., 0-5 mm, 5-15 mm).

  • Feeders & Conveyors: Automate material flow between components.

  • Power Source: Diesel engine or external electric power.

  • Control Panel: PLC system for remote adjustment of crushing speed and screen size.

4. Working Principle

  1. Transport & Setup: The plant is driven or towed to the site.

  2. Feeding: Material is loaded into the feeder via excavator.

  3. Crushing Stages:

    • Primary Crushing: Jaw crusher breaks down large rocks.

    • Secondary Crushing: Cone crusher refines material for construction use.

    • Tertiary Crushing (Optional): Impact crusher produces 0-25 mm sand.

  4. Screening & Recirculation: Screens sort material; oversized particles return to the crusher.

  5. Stockpiling: Final product is conveyed to storage or trucks.

5. Advantages

  • Mobility: Operates in remote or rugged locations.

  • Energy Efficiency: Consumes 30-40% less energy than stationary plants.

  • Modular Design: Customizable with additional crushers or screens.

  • Eco-Friendly: Equipped with dust suppression and noise reduction systems.

6. Applications

  • Quarries: Processing limestone, granite, and basalt.

  • Construction Sites: Producing aggregates for roads, dams, and buildings.

  • Mines: Pre-processing gold, copper, and iron ores.

  • Recycling Plants: Repurposing concrete and asphalt debris.