Crusher Classification & Types

Crushers may be divided into three general classes, with respect to the manner in which they do their work: (1) Pressure Crusher. This category embraces the several types of gyratory crushers and jaw crushers, as wile as the double crushing rolls, with either smooth or corrugated shells. (2) Impact Crushers. This division is represented chiefly by the various styles of hammermill; also by the cage type disintegrator. (3) Combination Impact and Sledging Crushers. In this class we have the single or double sledging roll crushers. An example of the former, the Edison roll crusher.

Some further sudvising and qualification might be applied to these general might be applied to these general classifications, but these, for the most part, are not of particular importance. Pressure crushers, for example, may be divided into two sub-classes: the reciprocating, and the continuous-pressure, types. The gyratory and jaw crushers come under the first category, the crushing rolls under the second. Strictly speaking, the gyratory motion is not a reciprocating one, but it is so with respect to any vertical radial plane through the crushing chamber; therefore it is convenient to view it in that light. Some roll crushers, notably the light coal crushing type, have more of a tearing action, as contrasted to the heavy sledging performance of such machines as the Fairmount crusher.

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