Photo: The Trio® TC84XR cone crusher
Pebbles contain valuable ore but without a crusher capable of processing them, pebbles can end up discarded or stockpiled. Weir Minerals has developed the Trio® TC84XR cone crusher – specifically engineered to perform in the most challenging applications, including pebble crushing.
Pebble crushing is one of the toughest crushing applications on a mine site. Pebbles are rounded and very hard rocks that contain valuable ore. As ore is treated in a tumbling mill (SAG or AG), some rocks are hardened by the process and this hard, round-shaped material is known as pebbles. Without a crusher capable of processing them, pebbles often end up as lost product and are discarded or stockpiled.
However, with the right technology, pebbles can be effectively crushed and the otherwise lost ore can be obtained. The Trio® TC84XR cone crusher has been specifically engineered to perform in the most challenging applications, including pebble crushing.
Unlocking value, driving production
The TC84XR cone crusher from Weir Minerals, quite literally, unlocks value – it transforms what would be a waste product into a saleable one. This is becoming increasingly consequential: as mines are getting deeper and ore is normally becoming harder and more difficult to extract, miners are consequently finding more pebbles. It’s often said that the first stage of mining is done by nature; rock that has been exposed to the elements has already undergone – and is undergoing – a process of erosion. In contrast, rock that’s been locked underground for millennia is harder and more difficult to crush and process.
As well as adding significant value through increased production, the Trio® TC84XR crusher also helps prevent losses by reducing downtime. If pebbles are not properly processed and are, instead, allowed to build up in the mill, then they start to reduce processing capacity and can result in catastrophic plant and equipment damage. The Trio® TC84XR crusher’s (and the smaller TC series) unmatched ability when it comes to handling pebbles is one of the reasons why it’s widely regarded as one of the most reliable cone crushers on the market.
Tackling variable feed
You only have to see the Trio® TC84XR machine alongside other cone crushers to appreciate just how robust it is. It’s 40-50% heavier than similarly sized machines and, as a result, it can process unstable feed and it just keeps on running. When it comes to crushing pebbles, weight really does matter.
The ability of the Trio® TC84XR crusher to handle variable feed and crush pebbles is also partly a result of its large motor; it’s been designed with higher power capability than comparable cone crushers. Ultimately, this translates to a higher potential crushing force and therefore increase in production.
Another feature that allows it to handle variable feed, as well as deal safely, is the fully-automated tramp-release and setting recovery system. Tramp material is metallic scrap that accidentally finds its way into the crusher; it has the potential to damage equipment and lead to stoppages. The tramp release hydraulics can also be used to safely clear the crushing chamber should a sudden disruption in plant power cause a shut-down of the cone crusher.
The tight closed side setting (CSS) of the TRIO® TC84XR crusher is also crucial in enhancing its pebble crushing capabilities. The CSS defines the maximum product size and has a significant effect on crusher capacity and crusher liner wear. Trio® TC series cone crushers can be operated at a small CSS, 10 to 12 mm can be seen as a recommended operational setting for effective pebble crushing. Sometimes and in some applications, we can even go smaller, but this is dependent on the material characteristics and needs to be judged on a case-by-case basis.
The TC84XR crusher also has very high clamp pressure, which holds the adjustment ring in place. Increasing the clamp pressure helps to control the adjustment ring position and deliver a CSS, eliminating bowl creep (i.e. where the bowl begins to move as crushing forces overcome clamping forces).
Global support network
The TRIO® TC84XR cone crusher can also be fitted with ESCO® wear parts, designed with superior ESCO® alloys, they can be custom designed based on your specific requirements. With over 100 years of casting expertise and in-house engineering and metallurgy, ESCO® transforms what was already a robust machine into one that, in the toughest conditions, is unsurpassed.
With on-the-ground staff and service facilities already operating in more than 70 countries, Weir Minerals’ unmatched regional support network ensures product experts are always close to their customers. Contact a Weir Minerals crusher expert today.
Follow the link for more information: https://info.global.weir/l/789713/2022-03-02/qvhd1
