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diagram of blake jaw crusher

Jaw Crusher

Jaw Crusher

Jaw crusher is the vital equipment in crushing industry.

Processing capacity:1-2200t/h

Feeding size:125-1200mm

Appliable Materials: Limestone, granite, pebbles, cobble, iron ore, basalt and all kinds of hard and soft ores with compressive strength not higher than 320 Mpa.

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jaw crusher - an overview | sciencedirect topics

Following the above concepts, several workers, such as Hersam [6]. Gaudin [7], Taggart [8], Rose and English [9], Lynch [3], Broman [10], have attempted to establish mathematical models determining the capacity

Although it is not truly applicable to hard rocks, for soft rocks it is reasonably acceptable [1]. This expression, therefore, is of limited use. The expressions derived by others are more appropriate and therefore are discussed and summarised here

Rose and English [9] determined the capacity of a jaw crusher by considering the time taken and the distance travelled by the particles between the two plates after being subjected to repeat crushing forces between the jaws. Therefore, dry particles wedged between level A and level B (Figure 4.4) would leave the crusher at the next reverse movement of the jaw. The maximum size of particle dropping out of the crusher (dMAX) will be determined by the maximum distance set at the bottom between the two plates (LMAX). The rate at which the crushed particles pass between the jaws would depend on the frequency of reversal of the moving jaw

jaw crusher - an overview | sciencedirect topics

The distance, h, between A and B is equal to the distance the particle would fall during half a cycle of the crusher eccentric, provided the cycle frequency allows sufficient time for the particle to do so. If ν is the number of cycles per minute, then the time for one complete cycle is [60/ν] seconds and the time for half a cycle is [60/2ν]. Thus, h, the greatest distance through which the fragments would fall freely during this period, will be

Then for a fragmented particle to fall a distance h in the crusher, the frequency must be less than that given by Equation (4.10). The distance h can be expressed in terms of LMIN and LMAX, provided the angle between the jaws, θ, is known. From Figure 4.4, it can be seen that

universal jaw crushers | mclanahan

McLanahan Universal Jaw Crushers are an efficient and cost-effective option for reducing a variety of materials. Material is crushed by compressive forces  between a stationary piece of steel and a moving piece of steel

Introduced in 1906, McLanahan’s Universal Jaw Crusher was one of the first overhead eccentric jaw crushers. Since that time, this robust design has continued to be the basis of the Universal Jaw Crusher design.

In addition to the standard jaw crusher design, McLanahan also produces the H-Series, which features adjust-on-the-fly capabilities. With its hydraulic adjustment option, the Universal H-Series Jaw Crusher saves time when adjusting the closed side setting to allow for wear and to maintain a constant product output. The crusher eliminates the downtime associated with shim adjustments. It also features hydraulic cleaning and automatic hydraulic tramp iron relief and can reset itself to the previous position without operator intervention. 

McLanahan Universal Jaw Crushers are overhead eccentric jaw crushers that continuously reduce material as it passes through the crushing chamber with its aggressive force feed action as the movable jaw compresses inward and downward. The sharp primary blow at the top of the chamber reduces material instantly, while a secondary crushing action at the bottom further reduces material to the predetermined output size. Universal Jaw Crushers offer a compressive stroke that is nearly equal at both the top and bottom of the chamber, producing more spec material at a lower cost per ton. 

universal jaw crushers | mclanahan

McLanahan Universal Jaw Crushers can be used in a variety of operations, including rock quarries, sand and gravel, mining, recycling, construction aggregates and by road building contractors. Materials processed by the Universal Jaw Crusher include limestone, gypsum, concrete, rubble and more.

If the material is easily crushed and not excessively abrasive, an Impact Crusher can be the best choice. Our Impact Crusher line includes: Andreas Impact Crushers, MaxCap Impact Crushers and New Holland Impact Crushers.

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