A crusher is an industrial machine that reduces large rocks, stones, or ore into smaller sizes by mechanical means. It is widely used in construction, mining, and infrastructure projects.

Function:
Converts raw materials into aggregates for concrete, asphalt, fill, or sub-base applications.

Operation:
Material is fed via a feeder into the crusher unit (jaw, cone, impact). Mechanical force breaks it into smaller fragments. These fragments pass through vibrating screens and are sorted by size. Conveyors direct the finished product to storage or loading zones.

Applications:

  • Aggregate production for concrete and asphalt

  • Road, bridge, and tunnel construction

  • Mining ore preparation

  • Dam, port, and airport infrastructure

  • Recycling of construction debris

2. Mobile Crusher

Mobile crushers are compact, transportable units with crushing and screening equipment mounted on tracks or tires. They offer site mobility and fast deployment.

Function:
Enable on-site crushing, reducing transport logistics and saving time and cost.

Operation:
Powered by diesel or electric engines, material is loaded into the hopper, crushed, screened, and sorted. The unit can operate within hours and load directly into trucks.

Applications:

  • Demolition and recycling in urban areas

  • Construction work in remote or mountainous areas

  • Temporary road and railway maintenance

  • Mining and quarrying sites

3. Fixed Crusher

Fixed crushers are permanently installed plants designed for high-volume operations and long-term deployment.

Function:
Support large-scale aggregate production required by continuous infrastructure and industrial projects.

Operation:
Trucks deliver material to the primary jaw crusher. Follow‑on secondary crushers (cone or impact) refine the product. Multiple screen decks sort it. Conveyors transport it to storage. Central control systems ensure efficiency.

Applications:

  • Major infrastructure works (roads, dams, ports)

  • Large concrete and asphalt plants

  • Heavy mining operations

4. Differences Between Mobile and Fixed Crushers

  • Mobility: Mobile crushers are portable; fixed ones remain stationary.

  • Setup Time: Mobile units can start in minutes; fixed systems require lengthy installation.

  • Capacity: Fixed plants generally handle higher throughput.

  • Cost: Mobile has higher initial cost but saves logistics; fixed is more cost-effective long-term.

  • Versatility: Mobile units adapt to changing sites; fixed units serve specific locations.

5. Clinker Crushing and Screening Plant

Definition:
A facility that breaks down cement clinker into finer sizes and separates it via sieving before final processing.

Function:
Prepares clinker for grinding and ensures grain size consistency required in cement production.

Operation:

  • Feeding: Clinker is fed into jaw or cone crusher.

  • Primary Crushing: Brought to 20–40 mm size.

  • Secondary Crushing: Further reduced to finer sizes using cone, impact, or ball crushers.

  • Screening: Vibrating screens classify the output by size.

  • Storage/Distribution: Sorted material is conveyed to storage or the milling section.

Applications:

  • Cement industry (clinker preparation)

  • Pre‑grinding in concrete plants

  • Production of filler aggregates