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More crusher is recognized around the world

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    The crusher is a machine designed to reduce large rocks into smaller rocks, gravel, or rock dust. Crusher may be used to reduce the size, or change the form, of waste materials so they can be more easily disposed of or recycled, or to reduce the size of a solid mix of raw materials, so that pieces of different composition can be differentiated. Crusher is the process of transferring a force amplified by mechanical advantage through a material made of molecules that bond together more strongly, and resist deformation more, than those in the material being crushed do. 

    The crusher devices hold material between two parallel or tangent solid surfaces, and apply sufficient force to bring the surfaces together to generate enough energy within the material being crushed so that its molecules separate from, or change alignment in relation to, each other. The earliest crusher were hand-held stones, where the weight of the stone provided a boost to muscle power, used against a stone anvil. Querns and mortars are types of these crusher devices.

    For the most part advances in crusher design have moved slowly. Jaw crusher have remained virtually unchanged for sixty years. More reliability and higher production have been added to basic cone crusher designs that have also remained largely unchanged. Increases in rotating speed, have provided the largest variation. These production improvements come from speed increases and better crusher equipment chamber designs.

    The largest advance in cone crusher reliability has been seen in the use of hydraulics to protect crusher from being damaged when uncrushable objects enter the crusher chamber. Foreign objects, such as steel, can cause extensive damage to a cone crusher, and additional costs in lost production. The advance of hydraulic relief systems has greatly reduced downtime and improved the life of these crusher.

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