A stone crusher is a special equipment to crush non-metallic and ore materials used in industrial and construction industries. There is a wide range of crushing equipment on the market that can process even very hard material in large volumes. Stone crushers allow you to quickly process soft and hard, plastic and brittle materials: for example, dolomite, marble, granite, gabbro-diabbase, limestone. The size of the outlet fractions is determined by the type of sieve installed and the size of the exposed outlet slot. The number of crushing cycles of a stone or other material is determined by its physical, mechanical properties and the type of crushers used. At the first stage of crushing, as a rule, jaw crushers are used, at the second - impact or cone crushers, at the final stage of processing, centrifugal or cone machines are used. The choice of a crusher is determined by the tasks, complexity and volume of work. Impact crushers crush materials with strength less than 90.0 MPa. If the material has a higher strength, then cone or centrifugal crushers are used.
With the increase in industrial, transport, hydraulic engineering and other types of construction, a sufficiently large amount of gravel, crushed stone, sand and other types of nonmetallic building materials is required, which are used in the manufacture of asphalt concrete, cement concrete structures and ballast layers in transport construction. For the production these construction materiales, a series of equipment such as jaw crusher, impact crusher, cone crusher and centrifugal crusher are used.
Traditionally, the jaw and cone crushers has become widespread, used for medium and large crushing facility, However, in the finished products they produce, the proportion of cube particles is very low. The impact crushers and modernized cone crushers with a cubic grain yield of up to 90.0% are used. However, compared to impact crushers, cone crushers have a higher energy consumption. Compared with crushing equipment of cone and jaw type impact crushers, the latter have higher technical and economic characteristics: greater degree of crushing and productivity, smaller size and weight, rather simple design and ease of maintenance.
