as we all know, in the stone production line, the broken processing stone is generally completed by a combination of rough and fine breaking. in the process of rough breaking, users often choose the jaw crusher, but many users will be entangled in the process of fine crushing. which one is the impact crusher and the cone crusher? after repeated discretion, it is still difficult to decide.in fact, the impact crusher and the cone crusher are secondary crushing. the difference between the two is the appearance and the working principle.
first, the principle of breaking is different.
the impact crusher adopts the principle of impact crushing. after the material enters from the feed inlet, it is repeatedly crushed and crushed between the hammer and the counterattack plate until it is formed after molding. the cone crusher is laminated and crushed. constantly moving toward the broken wall, squeezing the material sandwiched between them to pulverize.
second, the discharge granularity is different.
impact crusher with some micro-shaping effects, the material produced is sharp and angular, and the grain shape is good, which is also determined by the working principle of the impact crusher; the cone crushing is divided into coarse, medium, fine, superfine, etc. model, the broken material is finer and more powdery, but it is widely used in the market because of its low energy consumption and low noise.
third, the processing capacity is different.
the impact crusher has a smaller processing capacity than the cone crusher, but the finished product has good grain size and is generally suitable for small building materials or construction projects. the cone crusher has strong processing capacity and is used in large-scale mineral processing projects.
fourth, the input costs are different.
for the user, the quotation of the crusher is also a key factor to consider. the general impact crusher is lower than the cone crusher, and the initial input cost is small, but it has more vulnerable parts, and the later inspection work will be more complicated; the price of the machine will be higher. it may be high in input cost in the early stage, but it has strong processing capacity, less wearable parts, and stable operation in the later stage.
it is also a good choice in the long run.in addition to the above differences, the user should also consider according to the materials he handles, such as processing limestone, limestone and other materials with hardness below the intermediate level, you can choose the impact crusher; conversely, if processing river pebble, granite, bluestone, etc. cone crushers can be considered for materials with higher hardness.
in general, impact crushers both vertical shaft (vsi) and horizontal shaft (hsi), the main difference from the cone crusher is the type of crushing force. the impact crusher crush by material impacting another object. the cone crusher uses compression crushing to squeeze or compress the material between the two crushing surfaces. the type of crusher and the selection of crushing process for any application depend on the material hardness, material density, feed size, required product size and capacity and the initial cost of each crusher and the cost of maintaining each type of crusher.
horizontal shaft impact crusher consist of a hopper, two or three aprons, a rotor, and blow bars or hammers. basically, large products are fed into the hopper where they come into contact with hammers or blow bars to a spinning rotor which crushes the material into smaller pieces. as the larger material gets impacted by the hammers, it comes into contact with each apron rebounding it back to the rotating hammers for another round of impacting until it is discharged out of the hsi.
vertical shaft impact crusher consist of a feed hopper, a feed tube, a rotor, and either stationary anvils or rock shelves. essentially, feed material drops through the feed tube into the rotor, which, through centrifugal force, throws the material against stationary anvils made up of composite metal alloys or rocks (through the installation of a rock shelf). when the rock impacts on the anvils or rock shelves, it shatters along natural stress lines, creating a uniform, cubical product.
cone crushers consist of a bowl liner, a mantle, both main shaft and frame, compression, and an eccentric inner and outer bearing. essentially, material is reduced in size by squeezing the material until it breaks. specifically, the material is compressed between a moving piece of steel, the mantle, and a stationary piece of steel, the bowl liner. the final product’s size is determined by the closed-side gap setting between the two crushing members at the bottom. as the cone eccentrically rotates, the material is crushed and works its way down through the crushing chamber, until it discharges at the bottom of the machine.
in order to understand cone and impact crushing processes, one must know the material that will be crushed, which will determine the optimal crusher for your business needs. when considering the material to be crushed, you must look at abrasiveness, hardness, density, amount of fines, and the finished particle shape you desire.
impact crushers are used to crush softer, less dense and abrasive material such as limestone. because of its consistent striking process, an impact crusher produces uniform cubical finished products, which are desirable for hot asphalt producers. depending on the application, impact crushers can have higher wear costs, higher maintenance, and produce more fines. impact crushers may be used as a primary, secondary, or tertiary crusher depending on the producer’s final-product-size needs. these crushers are available in stationary, track and mobile designs. another industry usage is slag, specifically blast furnace slag, which is less abrasive than steel furnace slag and can be broken down if processed through an impact crusher.
cone crushers are primarily used to crush harder, more abrasive and dense material, such as granite, which is used in construction, chemical, metallurgical and silicate industries. cone crushers can be used in the primary, secondary, and tertiary position. these crushers are available in stationary, track and mobile designs. cone crushers are also used in the steel furnace slag industry, which is a much more abrasive slag than blast furnace.
impact crushers, initially, are less expensive than cone crushers. although cone crushers are more expensive up front, they will require far less maintenance than impact crushers. the majority of maintenance costs on an impact crusher comes from wear on the blow bars and aprons which if used to crush highly abrasive material, may surpass the initial cost of the cone crusher. as stated earlier, producers must understand their industry needs and the materials they will mine in order to choose the optimal crusher.
impact crusher and cone crusher, although belong to the second crushing equipment, are placed in the coarse crushing machine. it used to complete all kinds of sand and stone materials of the second degree of fine crushing, but to carefully observe them or have a great difference, take the pebble for example, which machine is better to crush pebble?
impact crusher: the material is crushed by collision and friction between the hammer and impact plate. in addition to the crushing function, it also has a certain effect of micro-shaping. the material particles treated by it are of uniform size, with low content of needle-flake and reasonable gradation. the size of finished product is good, and the needle flake is less.
cone crusher: it is improved on the traditional cone crusher system, through the lamination crushing principle, so that the material is crushed. its crushing effect is still slightly weaker than impact crusher. although the grain shape is not very good, it is widely used in the current market due to its low energy consumption, large output and stable production.
different specifications of stone raw materials have different hardness characteristics, so impact crusher and cone crusher in the treatment of stone crushing also has different characteristics.
impact crusher is suitable for crushing soft stones, such as limestone, dolomite, weathered rock, etc. cone crusher is more suitable for crushing stone raw materials of high hardness, such as river pebbles, granite, quartz stone, basalt, etc.
pebbles are not as soft as limestone and shale. it is recommended to choose high wear resistance equipment when selecting processing equipment, such as cone crusher. although the treatment effect of cone crusher is not as good as that of impact crusher, it has a strong processing capacity. in the crushing of such high hardness materials as pebbles will not produce too much wear and tear, and high output, can create higher economic benefits for investors, so the crushing of pebbles, cone crusher is a better choice.
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