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difference between gyratory and jaw crusher in pakistan

compare gyratory crusher vs jaw crusher

compare gyratory crusher vs jaw crusher

To accomplish this reduction in size takes several steps or stages of crushing and grinding. Primary crushing is the first of these stages. Generally speaking there are two types of primary crushers, lets compare them: GYRATORY CRUSHER or a JAW CRUSHER. Although they dont look anything like they do have similarities that put them into the same class of crusher.

Their CRUSHING SPEEDS are the same, 100 to 200 revolutions per minute. They both break the ore by COMPRESSION. That is they both break the rock by squeezing it until it breaks. On the average their final product will measure about seven inches at its widest point. And finally they both can be built to accept a rock up to sixty inches across.

Even if they are much alike, each of the two types of crushers has its own uniqueness. Because of this difference each type of crusher has its own environment that it operates best or at least better in, than the other.As an example, a gyratory crusher can be fed from two sides and handle ore that tends to slab. Also its design allows a higher speed motor with a high reduction ratio between the motor and the crushing surface. This is an important consideration as it means money saved in energy costs. A jaw crusher on the other hand requires a flywheel to store energy but can be used on the tougher ores due to its box frame construction. To be effective it must be fed from one side only but it handles square block-like ore well.

There is another comparison that should be taken into consideration, that is the amount of space that each takes. The Jaw crusher is the smaller of the two and its single feed point will make it a logical choice for underground workings. In the actual operation of the crushers, they both have similarities as well as differences so lets take each one separately and discuss its design and its problems. Considering the title of this chapter is Primary Crushing (Gyratory) we should discuss that one first.

In the introduction I mentioned that the purpose of a concentrator was to produce a concentrate of which ever mineral was being mined. To be able to recover this mineral it is necessary to reduce the ore in size until the mineral is LIBERATED. This means that the ore must be reduced in size until it is fine enough to be able to separate the mineral from the unwanted rock. In the Vocabulary of the metallurgist, at this point of the operation the unwanted rock will be termed the GANGUE material. You will notice that the terminology used for the ore will change depending upon the stage of concentration. The reason for this is to keep technical communication accurate.

gyratory vs jaw crushers: advantages & disadvantages

gyratory vs jaw crushers: advantages & disadvantages

Nodiscussion of primary crusher selection would be complete without a comparison of the two leading types: the standard gyratory crusher and the Blake jaw crusher. Although their fields of application overlap to a considerable degree (at least in the realm of primary crushing) there is no real conflict between these two machines; one supplements the other and, between them they very effectively cover an imposingly large proportion of the entire field of primary crushing applications. This does not mean that other types, such as the sledging rolls, for example, are not better suited for certain applications; but there are very few primary crushing jobs to which the gyratory or jaw crushers, or both of them cannot be applied with at least a fair degree of satisfaction.

Either of the two types can be built to handle the hardest and toughest rock or ore that can be economically mined or quarried. The jaw crusher, because of its box-frame construction, and simple toggle mechanism, is especially well adapted to extra heavy design for the crushing of extremely tough materials: in this respect it holds some advantage over the gyratory type, because the extra strength necessary for such work can be built into it at less cost than is required for the gyratory with its more complex shell castings. However, cases where extreme brute strength enters into the selection problem are relatively rare, either type can be used for the great majority of materials encountered in crushing practice, either in standard form or in reinforced design. Strengthening of these machines for extra-heavy duty follows certain well established practices which have been proven to be necessary or desirable. Usually it is a matter of selecting stronger metals, or adding weight in the frame, or both; seldom is it necessary to change the proportions of the working mechanism.

In most cases selection of one type or the other can be made on the basis of performance characteristics, receiving openings, space requirements, and so forth, without regard to relative strength of design. In choosing between the two for any specific application it is helpful to have a list of the salient features of each type, in a form that will permit quick and easy comparison. The following lists emphasize the favourable characteristics of each machine.

Neither machine is particularly well suited to handling very soft, or mushy materials, although the jaw crusher is superior to the gyratory for such service. Loosely cemented minerals, such as soft sandstone, will not work well in the gyratory crusher; packing on the diaphragm behind the pipe is almost certain to cause trouble. The jaw crusher will handle rock of this character if it is reasonably free-flowing. The action on all very soft materials is inclined to be sluggish and, unless it is at the same time of a free-flowing nature, packing in the crushing chamber is an ever present hazard. The jaw crusher will handle rock and ore containing a considerable proportion of loam, or similar contamination, provided that the admixture is not so viscous that it builds up on the jaw plates. The gyratory should never be used for materials containing more than a small percentage of such contamination, the allowable amount being that which the clean crushed rock will keep scoured off of the diaphragm. Flushing the diaphragm will prevent packing of this dirty material, but this practice is usually not permissible in the crushing plant.

We have had occasion to use the expression, comparable sizes, a number of times in this work, with reference to comparisons between two types of crushers, particularly the jaw and gyratory types. This expression has been used by many writers on the subject; usually without any attempt to define exactly what it implies. As a matter of fact, it is a difficult term to define with any degree of accuracy. The Old Quarryman says, It means two machines, one of which you would buy if you didnt buy the other one, providing you had enough money to buy either one of them. That comes about as near as any definition. Comparable sizes of gyratory and jaw crushers are those sizes which the engineer or operator pairs off against each other when making a selection to fit his specific problem, and these pairings may not be the same for all problems. One job may involve capacity as the most important factor; the next one may demand special emphasis on receiving opening. Obviously these different requirements may call for setting up acomparison between different sizes of one or the other type.

Usually, in selecting the primary crusher, receiving opening is the prime consideration; admitting of course that capacity must be adequate. The following list is an attempt to pair off gyratory and jaw crushers on the basis of effective receiving openings, bearing in mind that each shape of opening has its advantages for certain shape-characteristics of the feed, as has been pointed out.

Sometimes, in making a comparison of receiving openings, it is helpful to make a scale drawing of both openings, superimposing one upon the other. The rectangular jaw opening is simple and easy to layout. To draw the gyratory opening, it is necessary to know the top diameter of the crushing head; to make a complete sketch, the diameter of the spider hub and the width of the spider arms should also be known, but this information is not absolutely essential in making the comparison. Taking half the top diameter of the head as a radius, draw the circle which represents the top of the head; then, increasing the radius by the actual opening between head and concaves at their tops, draw the circle representing the concave ring at the top of the crushing chamber. Then superimpose the diagram of the jaw crusher opening, laying it in tangent to the head circle.

To facilitate this work for the line of Superior McCully gyratory crushers, we list in the following table the top diameters of the heads, and openings between head and concaves for straight-face, and non-choking, concaves.

Laying in the plan view of the spider hub and arms will, of course, give a more complete picture of the gyratory crusher receiving openings, but the picture is likely to be a littlemisleading unless it is borne in mind that the maximum diameter of the spider hub is some distance above the upper rim of the crushing chamber, and therefore does not restrict the receiving opening as much as the plan view indicates. The true effective receiving opening can only beshown in its proper proportions by tilting the plan view; that is, by an angular projection normal to a plane which is tangent to the bulge of the spider hub, and to the top of the crushing head, To draw such a view requires more information, and usually more drafting skill, than the average man has at his disposal. The circle method described in the second preceding paragraph is sufficiently close for all practical purposes.

If the material to be crushed is of a slabby nature, for example, a thinly stratified limestone or shale; the product of the jaw crusher is certain to contain slabs, some of which may be quite large, particularly so if some of the strata in the deposit are thinner than the discharge setting of the crusher. Nor is this tendency to slab in the crusher confined to stone of stratified formation. Some rocks of massive formation may contain parallel cleavage planes in certain sections of the deposit. Such material will slab in the crusher just the same as those rocks which wereformed in definite layers, or beds.

The gyratory crusher by virtue of its annular discharge opening is an effective slab breaker. This faculty, coupled with the fact that its receiving openings are especially well suited for admitting slabby feed, give it a very definite advantage over the jaw crusher in the handling of such material. In the foregoing comparison of these two leading types of primary breakers we have endeavoured to present the case for each of them in a fair and impartial manner. It would be difficult, and probably more than a little tedious for the reader, if we were to attempt a more definitive analysis or to set up fixed rules of procedure for selecting one or the other machine; a process which is always fraught with pitfalls in such a broad and empirical branch of engineering as the processing of rocks and ores. Usually the matter of choice can quickly be narrowed down to a comparison of one size in each type. These two machines may then be tabulated with respect to capital investment, capacity, power requirements, space requirements, and so forth; their receiving openings may be compared, as we have suggested, and all of the factors we have discussed in this section checked against the features and limitations of each machine to determine its ability, or inability, to fit into the plan.

cone crusher vs gyratory crusher - jxsc mine

cone crusher vs gyratory crusher - jxsc mine

{Cone Crusher vs Gyratory Crusher}Both cone and gyratory crushers have a cone, and their outline that looks have a little resemblance. The two crushers can continuous working, and their working principle in the same way. But the cone crusher vs gyratory crusher, their structure and performances are different.

The cone liners of the gyratory crusher are steeply inclined. The movable cone that up part is small and lower structure is large, while the fixed cone in which the top is big and the bottom is small. Therefore, it can increase ore feeding capacity. The cone of cone crusher is gently inclined, and the movable cone and fixed cone are placed in the truncated cone. There is a certain length of parallel ore crushing zone between the two parts, which can better control the size of ore discharge. Under the action of the high rotating speed movable cone, the ore is guaranteed to be crushed at least once in the parallel zone. As a result, the product has a uniform particle size.

The movable cone of the gyratory crusher is suspended on the crossbeam, and the movable cone of the cone crusher is supported on the spherical bearing. If it also uses suspension structure which will affect the uniform feeding. The dust-proof device of the cone crusher is more strict, and the water seal dust-proof device is often used.

The discharge gate of the gyratory crusher is large, so the size of the small non-broken things such as hammer allowed through. There isnt much required in its safety device. But the cone crusher must be equipped with a safety device, and the requirements of reliable work. A precompression spring safety device or a hydraulic safety device is usually used.

There is hardly any effect that the gyratory crusher because of the liner wore to make the discharging ore increases little. Therefore, it is usually used to adjust the size of the outlet by moving the cone up or down. Cone crushers require the uniform size of ore discharge, and the scope of increasing the size of ore discharge is very small because of the wear of the lining plate. Because the ore discharge opening is frequently adjusted, the adjusting device is required to be easy to operate. For example, a spring cone crusher can adjust the height of the fixed cone to change the size of the outlet. It should be noted that since the introduction of hydraulic adjustment and hydraulic insurance, the adjustment mode of the gyratory crusher and cone crusher is not very different. Jaw Crusher VS Gyratory Crusher

1. The rotating speed of the movable cone of the gyratory crusher is low, the stroke is small. And the ore is mainly crushed and broken and bent. The cone crusher has 2.5 times higher rotating speed and 4 times larger swinging angle than the gyratory crusher, so the ore is impacted quickly. Therefore, it is advantageous to the ore crushing, the crushing efficiency is high.

2. Different applications. In large quarries, gyratory crushers are often used as primary crushers. But the cone crusher is used as secondary and tertiary crushing more often and often used in sand plants and mines.

The cone crusher has the characteristics of high efficiency, high crushing ratio, low power consumption, and uniform product. So, since the end of the last century, it has been widely used in the world. And the crushers are constantly improvement and perfection on its itself structure. Cone crusher is suitable for medium and fine crushing of materials of various hardness.

Jiangxi Shicheng stone crusher manufacturer is a new and high-tech factory specialized in R&D and manufacturing crushing lines, beneficial equipment,sand-making machinery and grinding plants. Read More

difference between jaw crusher and gyratory crusher - jxsc

difference between jaw crusher and gyratory crusher - jxsc

Both jaw crusher and gyratory crusher can be used as primary crusher. Jaw crushers are more widely used, probably because of their price. Except for the price difference, there are others different in the two types of crushers. Such as working principle, structure, applications, capacity, input/output particle size, etc. This article will analyze their differences in detail.

1. The crushing mode of the jaw crusher is a curved extrusion type. Its main working part is two jaw plates, fixed jaw plate (fixed jaw) and movable jaw plate (movable jaw). The crushing space is formed by the jaws.

2. The belt and pulley are driven by an electric motor to move the movable jaw up and down through an eccentric shaft when jaw crusher working. When the movable jaw rises, the angle between the toggle plate and the movable jaw becomes larger, which pushes the movable jaw plate to approach the fixed jaw plate. When the movable jaw down, the angle between the toggle plate and the moving jaw becomes smaller. The movable jaw plate leaves the fixed jaw plate under the action of the pull rod and the spring. The material enters the crushing chamber by gravity. The materials between the two jaw plates are crushed by extrusion, bending and cracking.

The crushing chamber of the gyratory crusher is composed of a moving cone and a fixed cone. When the crusher works, the motor passes the power to the horizontal shaft and a pair of bevel gears through the large and small pulley. The eccentric sleeve is connected with the big bevel gear and the moving cone places in the eccentric sleeve. By driving the eccentric sleeve to rotate, the moving cone rotates around the centerline of the crusher. Sometimes close to the crushing wall and sometimes leave, forcing the ore in the crushing chamber is constantly crushed and bent, then crushed.

The structure of the gyratory crusher is complex. The machine is tall and large, heavy and inconvenient to carry. It needs the higher factory building, the capital construction investment is big. The advantages of jaw crushers are a simple structure, low manufacturing cost, small, it is easy to configuration, convenient maintenance, etc.

The gyratory crusher is mainly used for coarse crushing various hard materials as primary crusher. But it is not suitable for crushing viscous materials. General the large-scale dressing mill uses gyratory crusher.

The gyratory crusher is continuous crushing. Its outstanding advantage is high productivity, the ratio of crushing is big, up to 6-9.5. Some of the crushing ratios can reach 13.5, and the work is smooth, vibration is small. Jaw crusher is intermittent crushing, crushing efficiency is relatively low. The feeding way is different, any side of the gyratory crusher can feed, and can be crowded to feed, high efficiency. Jaw crusher cant be full feed.

The feeding size of the gyratory crusher is larger than the jaw crusher, and the output size is smaller and more uniform. The content of needle-like particles in discharge is less than 10%. The raw material can be poured from the conveyance directly into the feed port. It doesnt need the feeder equipment.

The request of input particle size of the jaw crusher is strict. After blasting, it is necessary to impact and crush the big stone to meet the requirement of the coarse jaw crusher. In addition, the output of the coarse jaw crusher is mostly flat, sharp or triangular needle-like particles, the content of more than 20%. The product is not a good shape.

Jaw crusher is mainly used to impact the extrusion crushing principle. The jaw plate wears quickly, the maintenance quantity is big. The gyratory crusher adopts the principle of interlayer crushing. The crushing process is carried out continuously along with the circular crushing chamber, and the useful life of the wear parts is longer than the jaw crusher. For example, jaw crusher in normal use, the useful life of wear parts.

The average energy consumption of medium-sized gyratory crusher is much lower than the large and medium-sized jaw crusher. The crushing technology of the jaw crusher consumes high energy. The high energy consumption of coarse crushing process is mainly because the jaw crusher adopts discontinuous impact crushing. The single crusher has small productivity and needs to be equipped with many types of equipment. The main reason for high energy consumption in the medium and fine crushing process is that the coarse size is not uniform and the coarse material proportion is large, which increases the equipment load.

The high mining cost of the jaw crusher: the feeding size of the jaw crusher is small, which leads to the high density of drilling holes and the high consumption of explosive.After blasting, there are a lot of big stone materials, and the workload of impact crushing is large.

Although the gyratory crusher price is high, its technology is advanced, long maintenance interval, low operating costs. But the daily operation and maintenance are more complicated than the jaw crusher.

The general large-scale crushing plant will choose the gyratory crusher as the primary crusher, except the viscous materials crusher plant. Because the capacity of the gyratory crusher is large, Big crushing ratio. The small mine crushing and quarries use jaw crusher.

If we consider the input/output particle size and production rate, when both crushers can reach the crushing requirement, it can choose according to the medium and fine crusher, investment, capital construction, environmental protection, etc.

Jiangxi Shicheng stone crusher manufacturer is a new and high-tech factory specialized in R&D and manufacturing crushing lines, beneficial equipment,sand-making machinery and grinding plants. Read More

comparison between cone crusher and jaw crusher - virily

comparison between cone crusher and jaw crusher - virily

All the heavy machine manufacturing in India has led to its development in the past. There are many heavy types of machinery manufactures in the country which has earned credits all around the globe. There are Jaw crushers manufacturers in India, as well as there are cone crusher manufacturers in India.

These machines are used majorly in the field of construction, metallurgy, chemical and silicate industry, mining, and road building. Its a no-brainer that the both these machines, i.e. the jaw crusher and the cone crushers find their utility in the crushing process.

A layman is ought to use the names for these machines alternatively, but there are many differences between the two popular machines. Let us walk through a comparative analysis between the cone crusher and the jaw crusher.

A Jaw crusher is made up of two jaws- the fixed one and the moving one. The machine is used to crush larger sized rocks in a motion resembling that of a nutcracker. The crushing process reduces the size of the stones. The chute that filters the rocks is built in such a way that it narrows towards the base. This helps in filtering the rocks and allows only a particular size of rocks to pass through.

A cone crushers components that is the fixed and the movable cones are similar to that of a jaw crusher. The major operational difference is that the cone crusher utilizes both the cones to grind ores and rocks into smaller pieces. The input is fed in between the two cones and the output is discharged from the discharge hole at the bottom of the cones.

A cone crusher, on the other hand, operated on the principle of rotating oscillatory motion. The pressure on the stones acts when in between the two cones. The two cones do the eccentric swinging movement and produce a force strong enough to crush the hard rocks. The bending force, shearing force and friction force result into a strong force which ultimately breaks the rocks.

A cone crusher is used for secondary crushing. The input to the cone crusher is much smaller and fragmented than that in the jaw crusher. The granularity of the materials that are crushed in the cone crushers is about 35mm to 350 mm. A cone crusher is best suitable for crushing of materials with high hardness like granite, marble, pebbles, dolomite, rhyolite, and diabase.

A Jaw crusher is used in the fields of quarrying, mining, recycling, infrastructure, and construction. It plays the primary role in the crushing of huge stones. Some of the features of the Jaw crushers are:

jaw crusher vs gyratory crusher - jxscmachine

jaw crusher vs gyratory crusher - jxscmachine

Jaw crusher and gyratory crusher as the primary crusher, play an important role in the crushing process. How to choose the suited primary crusher from the jaw crusher? Whats the difference between a jaw crusher and a gyratory crusher? JXSC starts with the following points: structure, capacity, energy consumption, maintenance.

All in all, if one set jaw crusher can achieve the needs of production, buy jaw crusher; if need two sets of jaw crusher, that would be better to buy a gyratory crusher. You may interest in 1. Single Toggle vs Double Toggle Jaw Crusher 2. Jaw Crusher Operation

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