With more and more customers inquiring which type of crusher is most suitable for cobble crushing and how to design a reasonable layout for the cobble crusher plant, we suggest it is helpful to get better knowledge of such stone material from its definition to applications as follows: 

Geologically defined on the Udden–Wentworth scale, a cobble is a clast of rock having a particle size or dimensions of 64–256 millimeters (2.5–10. inches), larger than a pebble and smaller than a boulder.  Cobblestone is a building material based on cobbles and a rock made predominantly of cobbles is termed a conglomerate.

The word ‘cob’ means a rounded lump which describes the cobblestones best. Cobbles are large pebbles which have often been rounded by flowing water. They are found on the bed streams where they are gathered. While many stones are quarried and shaped the cobblestone is naturally formed and shaped.

As for the application, the cobblestone has different uses due to its colorful and round shape. Nowadays, it is mainly used in roads and paths where it is mixed with a mortar and a binding agent.

The advantages of using the cobble stone are:

The road or driveway can be used heavily throughout and still be in good shape.

Tarmac roads and dirt roads can have ruts and potholes which are rarely found on cobblestone roads.

In early times the paths made of cobbles were known to be noisy when there was a horse carriage or even a vehicle as times went on but this can be an advantage to pedestrians of letting them know of vehicles approaching.

Also the stones are known to be environmentally friendly because they do not crack under heavy movement.

Tips for Selection of Suitable Cobblestone Crusher

With relatively high hardness, the cobble stone should be crushed by the crushing machine with strong wear resistance and durable parts, such as jaw crusher and hard rock crusher. Besides, it is necessary to pay close attention to the equipment condition during the operation process. In case of any failure, timely shut down the crusher and fix the problem as required.

The hard rock crusher manufactured by Zhongyu Dingli adopts hydraulically automatic-moving hammers with high chromium alloy material. With double feeding openings, it can crush the cobble materials as efficient as possible. In the cobble stone crusher plant, the hard rock crusher is generally combined with hammer crusher so as to obtain standard cobble stone products.