Rock is fed into a large opening at the top of the cone crusher where it is squeezed between the mantle and the cone.As the size of the rock decreases, pieces fall into lower levels of the crusher where they continue to be worn and broken down further.Once small enough, the fragments of rock exit through a narrow opening at the base of the machine.Cone crushers manipulate rock between a fixed cone and the movable cone (the central shaft).The width of the exit opening is adjustable through ascending and descending the fixed cone which allows the rock to be crushed to a variety of sizes.This method is more advanced than the one used in jaw crushers.You can see how jaw crushers work by clicking here.
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Using the crazycrusherthe smaller the rocks, the further down it will go into the jaws, and the easier it is to crush it finer.The upper part of the moving jaw is primarily a forward and back motion, whereas the lower part of the jaw is primarily an up and down motion.Never operate the crazycrusher with the steel safety plate open! initial breaking of rocks can and will cause chips to fly out of the top.The safety plate is designed to keep the chips inside the crusher where they belong not in your eyes! it is highly advisable to wear good leather gloves or mechanics gloves while working this rock crusher to avoid getting blisters.A catch container is included with the rock crusher.Start with the adjustable plate fully open by turning the adjusting screw counter-clockwise, then turn it in a couple turns.Open the safety plate, put your rock(s) in, close the safety plate and press down on the handle harder and harder until it breaks.If it does not break immediately, give it a few "slams" up and down, putting some weight behind it.If you plan on grinding the rock to a fine sand, have the classifying screen handy in a pan or something.Once no more pieces are coming out, dump your catch container into the screen and shake the screen.What does not go through the screen and into your pan can be dumped back in to the crusher after you put your catch container back under the crusher and turn the adjusting screw clockwise to about a 1/4" gap between the lower jaw area when the handles are in the down position.Pour the remaining rock particles back in from your screen into the jaws, close the safety plate and work it again, repeating the process until all the sample passes through your selected screen.To grind a sample, or to grind black sands for further processing, simply close the adjustable jaw until it is resting against the moving jaw.Raise and lower the handle a couple times to assure it is closed all the way and you have full movement of the arms.Starting with the handle in the down position, pour in a few tablespoons of black sands into the crazycrusher, and start working the handle up and down until no more sand is coming out.Short choppy strokes work better than full strokes.A grinding operation will create small amounts of ai-borne dust.It is always important to either wear a dust mask or be sure to be up wind of the dust.The reason is that you do not know what is in that rock! there could be arsenic and other nasty things in the ore so you don't want to be breathing in that dust! a dust mask is important, especially when using a drywasher! there could be haunta virus in the sand, mercury you never know, so please wear a quality dust mask!.
The new series of hpc cone crusher with high-efficiency and hydraulic pressure equipment is adopted three protecting equipment such as protecting oilcan, locking oilcan and hydraulic driving oilcan.They not only protect the machinery, but could deal with troubles without disassembly the parts.
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