Crusher - Wikipedia
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.
The Advantages of Roller Crusher over the Traditional ...
Jun 30, 2019· Roller crusher has powerful functions among the countless mining machinery and equipment. It has many advantages over the traditional machines. Roller crusher working principle consists of low rotating speed, high pressure and the extraction between the two rollers.