The following table describes typical uses of commonly used crushers:
|
Type |
Hardness
|
Abrasion limit |
Moisture content
|
Reduction ratio |
Main use |
|
Jaw crushers |
Soft to very hard |
No limit |
Dry to slightly wet, not sticky |
3/1 to 5/1 |
Heavy mining, Quarried materials, sand & gravel, recycling |
|
Gyratory crushers |
Soft to very hard |
Abrasive |
Dry to slightly wet, not sticky |
4/1 to 7/1 |
Heavy mining, Quarried materials |
|
Cone crushers |
Medium hard to very hard |
Abrasive |
Dry or wet, not sticky |
3/1 to 5/1 |
Quarried materials, Sand & gravel |
|
Compound crusher |
Medium hard to very hard |
Abrasive |
Dry or wet, not sticky |
3/1 to 5/1 |
Mine, Building Materials |
|
Horizontal shaft impactors |
Soft to medium hard |
Slightly abrasive |
Dry or wet, not sticky |
10/1 to 25/1 |
Quarried materials, sand & gravel, recycling |
|
Vertical shaft impactors (shoe and anvil) |
Medium hard to very hard |
Slightly abrasive |
Dry or wet, not sticky |
6/1 to 8/1 |
Sand & gravel, recycling |
|
Vertical shaft impactors (autogenous) |
Soft to very hard |
No limit |
Dry or wet, not sticky |
2/1 to 5/1 |
Quarried materials, sand & gravel |
|
Mineral sizers |
Hard to soft |
Abrasive |
Dry or wet and sticky |
2/1 to 5/1 |
Heavy mining |
Jaw crusher
A jaw or toggle crusher consists of a set of vertical jaws, one jaw being fixed and the other being moved back and forth relative to it by a cam or pitman mechanism.
Gyratory crusher
A gyratory crusher is similar in basic concept to a jaw crusher, consisting of a concave surface and a conical head; both surfaces are typically lined with manganese steel surfaces.
Cone crusher
a cone crusher is similar in operation to a gyratory crusher, with less steepness in the crushing chamber and more of a parallel zone between crushing zones.
Impact crusher
Impact crushers involve the use of impact rather than pressure to crush material. The material is contained within a cage, with openings on the bottom, end, or side of the desired size to allow pulverized material to escape.
Horizontal shaft impactor (HSI) / Hammer mill
The HSI crushers break rock by impacting the rock with hammers that fixed upon the outer edge of a spinning rotor. The practical use of HSI crushers is limited to soft materials and non abrasive materials, such as limestone, phosphate, gypsum, weathered shales.
