A crusher is a heavy-duty machine designed to reduce large rocks, stones, and minerals into smaller, manageable pieces. Crushers are widely used in mining, quarrying, construction, and recycling industries. Their main function is to process raw materials into usable sizes for further operations such as aggregate production or mineral processing.

2. What is the purpose of a crusher?

The main purpose of a crusher is to break down hard and massive materials like stones and ores into smaller fractions such as gravel, sand, or dust. The resulting material is used in a wide range of applications including road construction, concrete production, railway infrastructure, and drainage systems.

3. How does a crusher work?

Crushers operate using mechanical forces such as compression, impact, or abrasion. The working process generally involves the following steps:

  • Large rocks or materials are fed into the crusher via a hopper.

  • Depending on the crusher type (jaw, impact, cone, or vertical shaft), the material is broken down by squeezing, hitting, or grinding.

  • The crushed material is then passed through a screen to classify it by size.

  • Properly sized materials are transported via conveyors, while oversized particles are returned for further crushing.

4. In which fields are crushers used?

  • Quarries: For aggregate and crushed stone production.

  • Mining: For breaking down ore before beneficiation.

  • Construction: To produce materials for concrete and asphalt.

  • Recycling: To reprocess demolition debris and old concrete.

  • Infrastructure: For use in roads, bridges, dams, and tunnels.

5. What is a mobile crusher?

A mobile crusher is a compact, portable crushing plant that can be easily transported and installed at various job sites. These systems are mounted on tracks or trailers and are capable of conducting crushing and screening operations directly on-site without the need for a fixed installation.

6. What is the purpose of a mobile crusher?

Mobile crushers are primarily used to reduce material transportation costs and allow on-site material processing. They are especially useful in remote construction sites, mining zones, and in disaster recovery projects where quick deployment and operation are required.

7. How does a mobile crusher work?

  • The mobile crusher is delivered and set up on-site.

  • Raw materials are loaded into the feeder unit.

  • The material enters the crusher (jaw, impact, or cone) and is reduced in size.

  • After crushing, it passes through a screening system to separate fractions.

  • Final products are either stored via conveyors or loaded directly for use.

8. In which fields are mobile crushers used?

  • Remote quarries and mining sites.

  • Urban construction sites to minimize logistics.

  • Recycling operations for concrete and asphalt.

  • Emergency projects such as landslides or road repair after natural disasters.

9. What is a stationary crusher?

A stationary crusher is a fixed crushing plant permanently installed at a designated site. It is designed for high-capacity, continuous production and is typically used in large-scale aggregate and mining operations.

10. What is the purpose of a stationary crusher?

The purpose of a stationary crusher is to support long-term production by handling large quantities of rock or ore with high efficiency. These systems are often part of an integrated processing facility used in cement plants, mining operations, and industrial construction projects.

11. How does a stationary crusher work?

  • Raw materials are delivered to the hopper by trucks or loaders.

  • Material enters the primary crusher and is broken into smaller sizes.

  • The output goes through multiple stages of crushing and screening.

  • The final products are conveyed to stockpiles or directly to the production line.

  • Operations are usually automated and optimized for continuous output.

12. In which fields are stationary crushers used?

  • Large-scale quarries and mining plants.

  • Cement and concrete production facilities.

  • Major infrastructure works like dams, highways, and railways.

  • Industrial mineral processing sites.

13. What are the differences between mobile and stationary crushers?

  • Mobility: Mobile crushers can be transported between sites, whereas stationary crushers are fixed installations.

  • Setup time: Mobile crushers are faster to deploy, while stationary systems require longer construction and installation periods.

  • Capacity: Stationary plants generally offer higher production capacity.

  • Operational flexibility: Mobile crushers can be relocated as needed; stationary ones are location-bound.

  • Investment cost: Mobile systems are more affordable initially; stationary plants are more cost-efficient for long-term projects.

14. What is a gravel (aggregate) production plant?

A gravel production plant is a facility designed to produce crushed stone or gravel (also known as “macadam”) in various sizes using a combination of crushers and screening units. The output is used in multiple sectors including construction, roads, and drainage systems.

15. What is the purpose of a gravel production plant?

The main purpose is to transform raw rocks or recycled concrete into specific-sized gravel aggregates. These materials are essential for road base layers, concrete mixtures, railway ballast, and water drainage infrastructures.

16. How does a gravel production plant work?

  • Raw material is delivered by truck and fed into the primary crusher.

  • After initial crushing, material passes through secondary and tertiary crushers.

  • Screening units classify material by size.

  • Finished products are stockpiled by conveyor systems and made ready for dispatch.

17. In which fields are gravel production plants used?

  • Highway and road construction.

  • Railway track ballast production.

  • Concrete batching plants.

  • Drainage and stormwater systems.

  • Landscaping and foundation works.