A crusher is a machine which uses a metal surface to break materials, typically minerals. Crushers are commonly classified by the degree to which they fragment the starting material, with primary crushers handling coarse materials and tertiary and quaternary crushers reducing finer gradations. Typically, crushing stages are followed by milling stages if the materials... Product Knowledge
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| type | hardness | abrasion limit | moisture content | reduction ratio | main use |
| jaw crusher | soft to very hard | no limit | dry to slightly wet not sticky | 3/1 to 5/1 | quarried materials,sand & gravel |
| gyratory crusher | soft to very hard | abrasive | dry to slightly wet not sticky | 4/1 to 7/1 | quarried materials |
| cone crusher | medium hard to very hard | abrasive | dry to slightly wet not sticky | 3/1 to 5/1 | sand & gravel |
| horizontal shaft impact crusher | soft to medium hard | slightly abrasive | dry to slightly wet not sticky | 10/1 to 25/1 | quarried materials,sand & gravel |
| vertical shaft impact crusher | medium hard to very hard | slightly abrasive | dry to slightly wet not sticky | 6/1 to 8/1 | sand & gravel |