Jaw Crushers are one of the primary crushers frequently used in the mining, quarry, metallurgy, building, construction and the chemical industry.
Jaw Crushers are often the perfect choice for primary then secondary crushing.
A Jaw Crusher crushes large rocks or ore by placing the rock under compression.
Crushers are used in reducing the size and the structure of materials that need to be recycled or disposed of just reduce the size of rock ore or a mix of solid raw materials
A fixed jaw is the non-moving breaking surface, while the moving jaw crusher the rock by forcing it against the non-moving plate. The rock gets crushed again and again until it is small enough to pass through the opening at the bottom of the jaw crusher.
All Mining operations utilize crushers, classified by calling them primary and secondary crushers for crushing coarse materials, before moving the material to other crushers reduce the ore particles to finer grades.
Typically, crushing stages are followed by milling if the materials need to be ever smaller. Crushers reduce the size of particles so that the material can be refined into finer particles with a grinder. A standard crushing plant at a mine might be made up of a crusher followed by a SAG mill then a ball mill.In this type of setup, the SAG mill and ball mill would be considered as grinders instead of crushers.
Jaw Crushers offer may advantages such as …
- A High reduction ratio
- Easy Operation
- Simple Construction
- Jaw Crushers are easy to maintain
In operation, raw material is delivered to the primary crusher’s hopper by excavators, front-end loaders, dump trucks etc .
A feeder device normally a conveyor or vibrating screen grid controls the flow of material to enter the crusher, it often contains a screening device which allows smaller material to bypass the crusher altogether. Primary crushing crushes the large pieces to a size which can be made even smaller to produce the finished product using grinders downstream.