Limestone, which is relatively brittle with a mohs hardness of 3, can be broken initially by a jaw crusher.After the bulk limestone of 0-750mm is conveyed to the jaw crusher, limestone with a particle size of about 70mm will be generated, and the phenomenon of over-crushing will not occur.The coarsely crushed material will be screened by a vibrating screen and then conveyed to the medium and fine crushing equipment by a belt conveyor.
Jaw crushers have been around for nearly 200 years and are one of the most historic crusher types.Because of this, jaw crushers have undergone many technological advances through the years to become more durable and to improve their movement to reduce choking and increase operational speed.These design tweaks over time have perfected a machine thats simple enough in its working principle that it may never become obsolete.
For large jaw crusher, the feed port is larger than 600mm, for medium crusher, it is 300-600mm, and for small crusher, it is smaller than 300mm.
The sandvik qj330 is the premier jaw crusher in the mid range of jaw crushers.The crusher is hydraulically driven via a cat c9 motor.fully hydraulical ajustable css on the fly.the sandvik qj330 will also crush in a reverse motion, no more blockages.crushing in reverse means it is now possible to crush wet and sticking material after heavy down pours.
The river stones are uniformly sent to the pe600750 jaw crusher by the vibrating feeder for coarse crushing into 65-160mm size.And then the coarsely crushed material is sent to the psg900 cone crusher by the belt conveyor for secondary crushing into 13-38mm, then is fed into the sand maker for further crushing.
1.Excellent casting engineering.Jaw crusher is made up with rack, seesaw, side guard, eccentric shaft and transmission.The eccentric shaft, made of high carbon steel, is the core part of the jaw crusher and has a large bending torque.The seesaw simulates the two movements of the animal to complete the material crushing operation.
When iron enters into the cavity, and the size of iron is larger than the discharging port of jaw crusher, the iron will be blocked between the fixed and movable jaw plate, which will make the fixed jaw plate and movable jaw plate collide with each other, resulting in the looseness or cracking of jaw plates.
The stone jaw crusher can be used for primary, secondary and tertiary crushing.The raw materials are in wide scope with common feature that compressive strength is from 147mpa to 245 mpa.
More compact than double toggle designs, the single toggle movement jaw crusher was at one time unable to accept such large feed sizes, though it can typically run faster.Technological innovations solved the feed size issue, and now these machines are quite popular for how quickly they work.They do experience a bit more wear and tear than the double toggle style crushers, however.Of course, wear parts are widely available and economical, so this fact has not prevented the single toggle design from catching on.
Jaw crushers are mainly used for primary crushing and a cone crusher is suitable for crushing various of mid-hard and above mid-hard ores and rocks.
In the large sand aggregate production line, jaw crusher or rotary crusher is usually used for rough breaking, while cone crusher, counterattack crusher or hammer crusher are used for medium breaking.
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