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All Impact Type Crushing Machines Use Speed to Crush!!
While there are many factors that affect the crushing efficiency of impact crushers, the most important of these is material velocity. This determines the amount of crushing which is done and the overall grading of the crusher discharge. Generally, the faster the material is accelerated, the greater the amount of crushing that is achieved. For this reason, it is essential that the impact crusher used have a wide operating speed range to accommodate a broad spectrum of material types and feed gradings.
REMco vertical shaft impact crushers have the broadest operating range of all VSI crushers. Please refer to the rotor velocity scale chart. For material reduction, the general velocity range is for particles traveling from 100 feet per second (30 MPS) to 325 feet per second (100 MPS). These are:
Shaping Speed – 100 to 175 feet per second (30 MPS to 53 MPS). At this speed tumbling, rubbing and mild impacts shape the stone. Soft material can often be reduced at these lower speeds which produce superior aggregate shape in all particles feed to the crusher. Very hard rock may only be mildly cubed at these speeds.
Whether your crushing requirement is for shaping, general crushing or grinding and pulverizing, a REMco VSI can be custom applied to produce your product. Contact REMco for guidance.
How is speed applied to a REMco VSI?
As the rocks are fed to the crusher, each particle experiences a rapid acceleration and deceleration in microseconds. This fills the crushing chamber with a violent rock cloud. Depending on the desired product, the crushing forces applied can be controlled by the operating speed of the machine. This speed control when combined with a variety of crushing chamber features results in optimum crushing efficiency for the power employed.
Hard rocks may only be shaped at crushing speeds and soft rocks can often be crushed at shaping speeds.
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