A crusher is a machine designed to mechanically reduce large volumes of rock, stone, or ore into smaller, homogenous-sized particles. They are essential in producing aggregates used for concrete and asphalt in construction industries. Material is fed into the crusher via a vibrating feeder and crushed with jaw, cone, or impact mechanisms until the target size is reached. The crushed material is then screened, and oversized fragments are returned to the crusher. This process ensures uniform aggregate production. Crushers are widely used in road construction projects, dam and bridge works, concrete-asphalt plants, quarries, mining sites, and recycling facilities.

A mobile crusher is a portable crushing and screening plant mounted on wheels or tracks. It can be operated directly at the site, which reduces transport costs and setup time. Powered by diesel engines or electricity, the process involves feeding the crusher, crushing the material, screening it, and conveying the suitable aggregates to storage. Mobile crushers are commonly used in construction sites, road infrastructure, temporary mining sites, recycling yards, and disaster response efforts. They offer fast deployment and flexibility, but have lower production capacity than stationary systems.

A stationary crusher is a fixed, high-capacity crushing and screening installation built on concrete or steel foundations. These are used in quarries, mining operations, port fill projects, and concrete-asphalt plants. Material is loaded from bunkers or silos, first crusher is usually a jaw type, followed by cone or impact crushers. Vibrating screens separate particles by size, and conveyors transport final product to storage. PLC-controlled automation allows continuous 24/7 operation. Stationary crushers cannot be relocated, require substantial infrastructure and investment, but provide high capacity and lower per-unit costs long-term.

Differences between stationary and mobile crushers: Mobile systems offer portability, fast setup, low infrastructure need, and flexibility but have limited capacity. Stationary systems provide large capacity, continuous operation, low unit cost, but need high investment, infrastructure, long installation time, and are immovable.

A chromite crushing and screening plant is an integrated facility designed to process chromite ore blocks into graded fractions. Chromite is used in steel alloy production, refractory materials, metallurgy, and chemical industries. The plant first coarse-crushes material using a jaw crusher, then reduces size further with cone or impact crushers. Vibrating screens separate fractions according to size. Suitable chromite fractions are conveyed to packaging, storage, or directly to processing/refinery plants. Optional grinding or washing units can remove impurities for chemical or refractory applications. Such plants are commonly used by chromite producers, metallurgy plants, steel mills, chemical facilities, and refractory manufacturers.