Williams Reversible Impactors are among the most advanced of the secondary or tertiary crushers to achieve a high reduction ratio. Reversible Impactors are used effectively as stone crushers, and are also well suited for reducing a variety of other materials such as coal, ore, clay, shale, refractories, ceramics, scrap glass, chemicals, fertilizers, and more to a uniform cubical shape.
Impact crushers are traditionally classified to two main types: horizontal shaft impact (HSI) crushers and vertical shaft impact (VSI) crushers. These different types of impact crushers share the crushing principle, impact, to reduce the material to smaller sizes, but features, capacities and optimal applications are far from each other.
Pressure crushers, for example, may be divided into two subclasses: 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
Compression style crushers, such as a jaw crusher or a cone crusher, are typically used with more abrasive materials. Impact style crushers, such as a horizontal shaft impactor or a vertical shaft impactor, are used more for material that is less abrasive. Some plants will use both styles of crusher.
Impact Crushers create material reduction by providing a sudden impact force that causes the material to shatter along all the weakest fissures in the stone. Controlling the flow of the material through the Impact Crusher requires features that vary from one style of impactor to another, and this is what separates McLanahan from the other