Vertical Shaft Impactors
Vertical shaft impactor
The machine comprises a horizontal table or rotor that revolves rapidly about the vertical axis of the drive shaft. Crushed rock fed into the centre of the rotor is ejected at high speed by 'centripetal forces' and breaks by impact upon the hardened alloy anvils surrounding the rotor and by inter-particulate collision. The rotor is lined with extremely hard materials such as carbides where appropriate. Wear of the casing may be reduced by the addition of a low ledge or shelf forming a 'rock-box' within which broken rock accumulates thereby obscuring and protecting the internal surface of the casing. Rock particles thus impact upon similar material and not upon the liner plates. These two designs are referred to as 'stone on metal' and 'stone on stone' respectively. The former can produce a greater reduction ratio.
Tagged: Sand and Gravel CrusherVSI Stone CrusherHard Rock Crushing MachineVertical shaft impactorsVertical Shaft Impact Crusher
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