Every crushing site and operation is different, so the choice of crusher depends on the material to be processed and the desired size of the final product. The choice may seem difficult, but fortunately, there are tools and software that can simplify the weighting of different options and help in making decisions. At the heart of all these analyses are careful calculations that take into account the capabilities and limitations of different crushers as well as operational requirements. This involves combining theoretical conclusions with practical experience of different materials, operating conditions, maintenance needs, and economic aspects of various alternatives. In short - determining which technology is best suited for production with as few stages as possible.
All rock crushers can be divided into two main categories. Compression crushers crush the material until it is broken, and impact crushers use the rapid impact principle to break the material. Jaw crushers, gyratory crushers, and cone crushers operate according to the compression principle. In turn, impact crushers utilize the impact principle. Another way to classify the machines is according to the stage they are assigned to in the process. Examples are jaw or gyratory crushers in coarse crushing and cone crushers in medium crushing.
The first crushers invented were jaw crushers, designed to reduce the size of large pieces of material and to operate at high capacity in primary crushing. Their primary purpose was to reduce the material to a small enough size so that it could be conveyed to the next crushing stage by a conveyor. Jaw crushers can also be successfully used in recycling operations. The mechanical structure is very simple and easy to install and maintain.
As the name implies, the jaw crusher reduces rock and other materials between the fixed and movable jaws. The movable jaw is mounted on a connecting rod that has a reciprocating motion, and the fixed jaw remains stationary. As material flows between the two jaws, the jaws compress the larger boulders into smaller pieces.
Jaw crushers can be divided into two basic types: single-elbow bar and double-elbow bar. In a single-elbow jaw crusher, the eccentric shaft is located at the top of the crusher. The shaft rotates to create compression with the elbow plate. Double elbow joint crushers have two shafts and two elbow plates. The first shaft is the pivot shaft at the top of the crusher, while the other is the eccentric shaft that drives both elbow plates.
Another type of crusher commonly used in the primary crushing stage is the gyratory crusher with an oscillating shaft. The material is reduced in the crushing chamber, between the external fixed element, the bowl liner, and the internal moving element, the jacket, mounted on the swing shaft assembly. The crushing of the material is caused by the continuous compression that occurs between the liners around the chamber. The additional crushing action is created between the compressed particles, which reduces liner wear. The gyratory crusher is equipped with a hydraulic setting adjustment system that allows adjustment of the gradation of the crushed material.
If you want to get more information about the types of crushers, welcome to contact us today or request a quote. Welcome to contact us today or request a quote.
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