tramp iron removal in cone crusher

tramp steel & cone crusher hydroset

tramp steel & cone crusher hydroset

As you can imagine the forces that are put onto the main frame and body of a cone crusher are fairly great. So what happens if something that cant be crushed, like a steel bolt, gets into the crusher? Instead of damaging itself the crusher has a built in safety device. The tramp steel release. This will take the form of either spring releases as in the diagram, or within the mantle adjustment mechanism on some types of crushers.

With the spring release they allow a certain amount of give between the mantle and the bowl liner. If stray steel should get into the cone crusher, the work load will exceed the pre-set strength of the springs. The frame and the bowl liner will lift with mantle as it goes through the crushing portion of its cycle. Once the mantle begins to open again it will let the steel pass through. With other types of crushers it is the mantle that moves instead of the frame.

Cone Crusher HydrosetThe Cone Crusher HYDROSET, which is a hydraulic method of adjusting the size that the crushers will crush to, has a release mechanism that allows the mantle to drop should the work load be exceeded. In both these crushers should the steel be larger than the release will handle, the crusher will be jammed. If this should happen, the only remedy is to dig the crusher out by hand and burn the offending metal away with a special oxygen- acetylene cutting torch.

Each Omnicone features dual function hydraulic cylinders that provide overload protection and a safe and fast way to clear a jammed cavity. Should the crusher become plugged, the operator merely pushes levers on the remote control console to clear the cavity.

cone crusher upgrades - metso outotec

cone crusher upgrades - metso outotec

Can lead to productivity gains of up to 20%, thanks to a remote setting feature that reduces the need for manual setting and makes for easier adjustment. Also reduces maintenance time and improves safety during bowl removal and installation.

Reduces downtime and operating costs by replacing the original mechanical springs with Metso Outotecs hydraulic tramp release and cavity clearing system. Also provides a safer way to handle a crusher that has stalled due to overload, power loss or tramp iron.

Many of these upgrades are based on integrating hydraulics. In most every case, a replacement power unit is required to take full advantage of the upgrade features. The 1-2-3 platform has evolved over decades of experience. This new platform is now skid-mounted, incorporating proven components into a more compact and serviceable form.

Provides faster and safer bowl adjustment, while eliminating the need for a bowl locking arrangement. This translates into easier calibration and a crushing circuit that runs more efficiently for a higher quality end product.

Simplify your bowl locking procedure with safer and faster setting adjustments for your Symons crusher. Hydraulic cylinders replace mechanical posts, reducing the labor and time required to change crusher settings from hours to seconds.

Modular design for faster assembly and delivery. Relying on proven components and decades of experience, this new family has transitioned from a reducer pump to a direct drive pump, which simplifies maintenance and parts management.

Can lead to productivity gains of up to 20%, thanks to a remote setting feature that reduces the need for manual setting and makes for easier adjustment. Also reduces maintenance time and improves safety during bowl removal and installation.

Reduces downtime and operating costs by replacing the original mechanical springs with Metso Outotecs hydraulic tramp release and cavity clearing system. Also provides a safer way to handle a crusher that has stalled due to overload, power loss or tramp iron.

Many of these upgrades are based on integrating hydraulics. In most every case, a replacement power unit is required to take full advantage of the upgrade features. The 1-2-3 platform has evolved over decades of experience. This new platform is now skid-mounted, incorporating proven components into a more compact and serviceable form.

Provides faster and safer bowl adjustment, while eliminating the need for a bowl locking arrangement. This translates into easier calibration and a crushing circuit that runs more efficiently for a higher quality end product.

Simplify your bowl locking procedure with safer and faster setting adjustments for your Symons crusher. Hydraulic cylinders replace mechanical posts, reducing the labor and time required to change crusher settings from hours to seconds.

Modular design for faster assembly and delivery. Relying on proven components and decades of experience, this new family has transitioned from a reducer pump to a direct drive pump, which simplifies maintenance and parts management.

Designed specifically with maintenance and safety in mind, the jack screw lock nut simplifies the task of replacing the mantle of your crusher. Now a minimal amount of torque applies the proper preload.

Designed specifically with maintenance and safety in mind, the jack screw lock nut simplifies the task of replacing the mantle of your crusher. Now a minimal amount of torque applies the proper preload.

high tramp metals in our rom ores damaging our primary crusher - crushing, screening & conveying - metallurgist & mineral processing engineer

high tramp metals in our rom ores damaging our primary crusher - crushing, screening & conveying - metallurgist & mineral processing engineer

We are experiencing a lot of trash metal (excavator and loader teeth, drill bits etc.) going through and damaging our Primary Crusher. Is there any scanning or detection technology out there that can identify exotic objects after it has been tipped in by the loader, but before it goes through the crusher? The aim would be to automatically stop the crusher before any damage takes place.

It depends on what type of crusher and how it is fed. If you are using a large crusher direct fed from a dump pocket, there is not much you can do besides having a very observant operator watching the pit.

Spotters are cheaper at Porgera but very hard to spot a broken tooth, tramp magnets are great with a belt feed but obviously have issues if there is much magnetite in the ore, probably no need for detectors as a good magnet will find most of it. If the loader and excavator tooth is common - that needs to be addressed on its own with the vendor. Operator care can eliminate most of the drill bit occurrence as well. Loader feed directly into the crusher works well with only "clean" feed. I have seen tramp magnets that can pull a 10lb piece of steel from over 2 feet above the belt.

Mines either have direct dumping into a coarse crusher with a tramp iron recovery system following it, or a tramp iron recovery system on a conveyor feeding a close/narrow gapped primary crusher. Both are usually followed by.

It sounds like you have more than one problem if you are dumping rejects from mill discharge into crusher you need to install magnets on the reject chute. When the loader operator does inspections he must report to his supervisor at once. This gives everyone a heads up.

As far as drill bits are concerned I have found that if the driller reports that he has lost a bit right away that is really all you can do. If not reported. A policy must be put in place that states the driller will lose x amount of dollars off his bonus.

To clarify a few things, we use a gyratory crusher and we do direct dumping into the crusher for crushing. So I think that the spotters issue will b looked at immediately for remedy of the problem and such sanctions will conscientize operators and supervisors in the pits.

At the downstream there are magnets both self cleaning ones and static ones to get rid of magnets that pass through the gyratory crusher because of their sizes and hence do not hurt the downstream circuits.

By the way many of those parts are none or low ferrous, meaning magnets have little effect. Try having the operations people be more careful. As to the loader teeth and other moving equipment parts, perhaps a better preventative maintenance program would be easier to emplace, such as checking the parts early and often and replacing them before they break off. As to drill steel and bits, have the drillers do a better job of cleaning up after themselves.

It is the responsibility of the shovel operator to watch the teeth and to immediately notify the shift boss that a tooth may be heading to the crusher. The trucks in transit along with the next few loads from the same spot could be diverted to a dump where smaller equipment could be used to check it, a dozer comes to mind. If that pile is spread out a drill bit should be easy to find electronically.

Someone, either a mechanic, shift boss, or someone else should be inspecting the teeth of all machines at the beginning of the shift. If one is loose either it or the pin must be replaced unless the pin can be tightened. A new pin is cheap compared to a mantle. Surely they have a tool to retrieve one.

What is the CSS of your primary crusher? It is hard to imagine a crushing circuit that was designed without provision for either picking tramp out of the feed or planning on it passing a relatively large CSS then being picked up later.

Thank you all for your contributions. We have taken all your suggestions and experiences on board and we are currently drafting an idea on how to combat and manage the situation brilliantly to avoid future damages to our crusher and its parts.

You have heavy duty drilling machines, shovels, loaders and dumpers whose broken and damaged Manganese steel, hard phased, ni hard ( low fe steels ) steel parts are being transported along with the ore boulders and directly unloaded to the primary crusher's (gyratory or jaw crusher) receiving chute.

The tramp iron magnet and metal detector will not work effectively on low fe steels and it needs proper surface exposure. Which cant be accommodated in dumper transportation but.certainly on conveyor and very successfully on passing 150 mm material?

Notifying the healthy fitments of these parts at the end of every shift by respective operators with un postponed corrective measure will certainly reduce the frequency of damages incurring by them. (Loader buckets teeth, pins, drilling couplings, rods and etc).

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