A crusher is a machine designed to reduce large rocks into smaller rocks, gravel, or rock dust. Crushers 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 (as in rock ore), so that pieces of different composition can be differentiated.

Crushing 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. Crushing 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 (fracturing), or change alignment in relation to (deformation) each other.

Machines used for crushing hard materials can take materials with edge lengths of up to2500 mm and reduce them to sizes of a few hundredths of a Millimeter in a series of processes. In these machines – crushers, Mills and presses – moderately to extremely hard stones, other minerals, coal and sands are processed. Depending on the material and on the desired end product, the following machines may be used:

•  Jaw crushers
• Cone crushers
• Hammer crushers
• Roller grinding Mills
• Roller press

As a leading crusher manufacturer, Liming are making their contribution to meeting these requirements. The merits of Liming crushers feature the following merits:

• High productivity and capacity, the impact crusher can reach 2000t/h
• Energy-saving and low consumption
• Low noise, little dust, environmental protection
• Reliable lubrication system, and convenient parts replacement
• Simple structure, even discharge granularity