A crusher is an industrial machine designed to break large rocks, stones, or minerals into smaller pieces for further processing or direct use. It is widely used in industries such as construction, mining, road building, and aggregate production. Its primary purpose is to convert bulk materials into usable forms such as gravel, sand, or crushed stone.

Crushers operate using mechanical forces such as impact, compression, or attrition. Material is fed into the crusher chamber where crushing units like jaw, cone, or impact crushers reduce its size. The crushed output is then screened into desired sizes using vibrating screens.

Typical applications include quarries, mining operations, infrastructure development, recycling plants, concrete batching, dam construction, and railway substructures.

2. What is a mobile crusher, what is it used for, how does it work, and where is it used?

A mobile crusher is a portable crushing unit designed to process materials directly at the job site. Mounted on tracks or wheels, it allows flexible and fast deployment in remote or temporary projects.

Mobile crushers contain all necessary systems—feeders, crushers, screens, conveyors—on a single platform. Materials are loaded into the machine and crushed on-site, eliminating the need for transportation to a fixed plant.

They are commonly used in roadworks, quarrying, construction sites, mining areas, demolition recycling, and asphalt production facilities.

3. What is a stationary crusher, what is it used for, how does it work, and where is it used?

A stationary crusher is a fixed crushing and screening plant built for long-term, high-volume production. It is typically used in permanent quarry sites or major mining projects.

Stationary plants usually include multiple crushing stages—primary, secondary, and tertiary—connected by conveyor belts. Crushed material is screened and sorted into specific grades and stored in stockpiles.

It is used in cement plants, large-scale infrastructure projects, aggregate production, and industrial mining operations.

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

  • Mobility: Mobile crushers can move easily; stationary ones remain fixed.

  • Installation Time: Mobile crushers require minimal setup; stationary plants need substantial construction time.

  • Production Capacity: Stationary plants are suited for high-output operations.

  • Cost Structure: Stationary units have higher initial costs but are cheaper to operate long-term. Mobile units are more economical for short projects.

  • Project Flexibility: Mobile crushers are better for short-term or location-variable projects.

  • Maintenance: Stationary units require less frequent servicing; mobile ones may need more maintenance on-site.

5. What is a vertical shaft mobile crusher, what is it used for, how does it work, and where is it used?

A vertical shaft mobile crusher is a mobile unit equipped with a Vertical Shaft Impact (VSI) crusher. It crushes materials using a high-speed rotor that propels the feed material against hard surfaces in a vertical chamber.

The centrifugal force and velocity generate intense impacts that shatter the material, producing cubical and high-quality aggregates. VSI crushers are especially effective for sand making, fine aggregates, and shaping hard rock particles.

These units are mobile and used in concrete and asphalt aggregate production, sand manufacturing, recycling of construction waste, and crushing of marble, granite, and basalt.