A crusher is a machine that reduces large rocks into smaller rocks, gravel, or rock dust. Crushers are mainly used in the mining and construction industries, where they are used to break down very large rocks and boulders into smaller pieces.

 — A crusher, also known as a stone crusher, is a machine that uses mechanical action to break large rocks, ores, or other raw materials into gravel or rock powder. Crushers are widely used in ore crushing, aggregate production, construction waste recycling, and natural stone processing.

 — Crushers may be divided into three general classes, with respect to the manner in which they do their work: Pressure Crushers: This category embraces the several types of gyratory crushers and jaw crushers, as well as the double crushing rolls, with either smooth or corrugated shells.

 — Crushing Methods: Compression, Impact, Attrition, and Shear. Compression Crushing: Compression crushing, also known as compressive force, applies a compressive force to the material between two surfaces until it breaks. This way is frequently applied in jaw crushers and cone crushers.

 — Jaw crushers can be divided into two basic types, single and double toggle. In the single toggle jaw crusher, an eccentric shaft is on the top of the crusher. Shaft rotation, along with the toggle plate, causes a compressive action. A double toggle crusher has two shafts and two toggle plates.

 — Cone crushers; The cone crusher features a cone-shaped crushing surface. This unique shape allows it to perform a distinct crushing action that is essential in many industrial applications. A cone crusher squeezes the material between an eccentrically gyrating spindle and a concave hopper.

 — Consideration must also be taken in reference to the flowability of the feed material and if it has a tacky, clay-like quality. Are roll scrapers or differential roll speeds required to provide a self-cleaning action to prevent material build-up on the roll surfaces? Is water being added?

 — Primary crushing is the first stage in the comminution process and involves breaking down large rocks into smaller pieces of a size that can be handled by the downstream machinery. The purpose of primary crushing is to reduce the size of the material to a level that can be handled by the secondary and tertiary crushers.

 — Crushers, grinding mills and pulverizers are types of grinding equipment used to transform or reduce a coarse material such as stone, coal, or slag into a smaller, finer material. Grinding equipment can be classified into to …

Explain how crushing works. Explain the stages involved in crushing operation (Primary, Secondary and Tertiary) Recognize different types of crushing equipment used in Mineral industry. Compare different equipment components and different methods to control the crushing process.