Mobile coal crushing plant variety and crushing systems based on different types of combination of single machines including jaw crusher, cone crusher, hammer crusher, etc. There are two coal crushing systems: open-circuit crushing system and closed-circuit crushing system. Open-circuit system is often used for those that have not serious requirement of end product’s granularity or those that will not produce the particle too large than imagined. In the closed-circuit system, the end product should be sieved through the screen coal which cannot go through the screen should be transported into crusher cavity for secondary crushing until through the screen. The coal selecting plant often uses open-circuit crushing system. While the latter system is also called recycling-circuit crushing system, which is used for crushing the material with end product smaller than a given size under the situation the crusher itself cannot achieve this requirement.
Mobile coal jaw crushing plant
Mobile coal jaw crushing plant uses the method of extruding, as well as simultaneously adopts the way of curving, impacting and peeling. It mainly includes simple-pendulum jaw crusher and duplicate-pendulum jaw crusher. The advantage of simple and duplicate pendulum jaw crusher is reliable working with capacity of hardness material. When coal is crushing, the tooth roller crusher is the most used. Jaw crusher is suitable for coal with high amount of gangue or yellow iron. The coal separating plant often uses the small and medium-sized jaw crusher.
The coal separating plant use single-tooth roller crusher and double tooth roller crusher. The advantage of tooth roller mill is low power content with low power consumption.Tooth-roller crusher has the main function of splitting as well as impacting and twisting. But the disadvantage is easily worn of tooth roller without crushing material with high hardness and low efficiency.
Mobile Coal hammer crushing plant
Mobile Coal hammer crushing plant use high speed rotary hammer to strike the material for crushing, which is suitable for the fragile material with the finished product ranging from 3-13mm. What’s more, it can guarantee the finished products without mixing too large-sized particle. The advantage of hammer crusher is simple structure with intense organization, high output and ratio, low power consumption, etc. The disadvantage is that the grate is easy blocking when the material has high water content with wear tear of hammer and grate. It is often used for coal medium and fine crushing process. According to the number of rotor, the hammer crusher can be divided into single rotor hammer crusher and double rotor hammer crusher. And the single rotor hammer crusher can be divided into changeover type and un-changeover type. The coal separation plant often uses single hammer crusher. Besides, it the rotor is not on balance, it will occur the bad vibrating in high speed rotary period.
Mobile coal impact crushing plant
Mobile coal impact crushing plant also uses the function of impacting to crush material. From the structural shape, somewhere it looks like hammer crusher, but they have many differences. First is that impact crusher has a hammer steeled-likely fixed on the rotor, which can utilize the whole rotor strength when crushing, especially for large-sized material. Second is that impacting equipment and larger crushing cavity for material crushing, which is not only by hammer impacting, but also by material and impacting board as well as mutual crushing of material in cavity. Last is that the bottom of cavity do not have grate, the granularity of crushing material is determined by the interval of impacting board and hammer, which can avoid the humid material blocking the grate. aration plant often uses single hammer crusher. Besides, it the rotor is not on balance, it will occur the bad vibrating in high speed rotary period.
Advantage of mobile coal impact crushing plant is of high crushing efficiency and output with lower consumption, because the material will chip along the fragile face when using impacting crushing. The disadvantage of impacting crusher is easy wear and tear of hammer with large amount of dust. Impact coal crusher can be widely used in raw coal and middling coal for coarse, medium and fineness crushing in coal separating plant. High crushing ratio with simple structure, which can crush the material selectively i.e. the high density materials will crush into small granularity while low density material will crush into big granularity.