A rock crusher is used to reduce large rocks in order to use the reduced rocks in various applications. A rock quarry may start the process by drilling and blasting natural rock formations. The spacing of the drill holes, diameter of the drill holes, depth of the drill holes and the actual amount of dynamite in each hole will produce the specific desired results.
Once material is blasted it may be necessary to further reduce any large chunks that remain. There are various ways to reduce the large chunks including hydraulic hammers or drop balls and drop crosses.
Once material is processed it is ready to be fed into the rock crusher primary. The primary crusher is most often a jaw crusher with a large feed opening. The jaw is a heavy duty crusher that is specifically designed to reduce the large chunks into a more manageable size to be further reduced by a series of smaller secondary and or tertiary crushers.
It is industry standard to have each crusher perform an approximate 5 to 1 reduction to maximize efficiency and by allowing each machine to share in the work.
Prior to the primary crusher and in between each crusher would most often be a screening system. The concept of screening prior to each crusher is to maximize production while reducing wear and tear on crusher wear parts. By screening prior to each crusher, it ensures that the only rocks that go into the crusher are rocks that require crushing.
The screening systems can be multiple layers or decks and can have a variety of screen media installed to achieve the desired rock sizes. The desired rock sizes are then conveyed into stock piles to be loaded on trucks and delivered to prospective clients or job sites.
This is a simplistic overall explanation that will vary for each quarry operation.
Please contact us for assistance or a more detailed explanation.
