Mobile Heavy Duty Rock trommels have hit the local market for the first time and are about to change the mining and quarrying landscape wherever their efficient screening mechanisms are able to unlock mineral bounty faster and more efficiently.
Due to its rotating barrel design the minerals bearing materials can be manipulated to process easier and in the case of coal and diamonds the action of the trommel can actually be used to liberate the minerals and reduce the need for further processing. The action also suits sticky materials and those prone to clogging gravity fed incline and other types of screens.
Why haven’t mobile trommels been used before in the mining industry in southern Africa before? The answer is that the machines have simply not been available to date and the arrival of MDS Heavy duty eavy HeaTrack Trommels on African shores now brings parity to the market. They will allow African mines to process minerals in the same efficient manner as their American, Asian and European counterparts in certain applications.
Terex-owned MDS recently concluded an exclusive distribution agreement with the country’s largest multi-franchise distributor, ELB Equipment, where it will be sold among the likes of its Powerscreen, Terex Minerals Processing and other mining OEM suppliers. Wakefield Harding, ELB Equipment divisional director for mining, says the addition of the MDS range of tracked trommels effectively closes the screening loop for its customers with a full range of equipment for any application.
Although static trommels are used in the industry, the arrival of the MDS tracked trommels provide flexibility to move the machine to suit the changing landscape of a mine and reduce handling. With aperture sizes up to 450mm the trommels can be fed large rock sizes and screened to three different streams if needed. Although the trommels are application specific and potential users would be required to speak to an ELB Equipment mining expert, ELB Equipment product and applications manager, Heath Dickson, says the following are some of the innovative applications that should be examined:
In South Africa we have an abundance of coal and an abundance of low-grade coal with a lot of shale. To put this low-grade coal through a crusher you make it unusable. By putting it through a trommel and it tumbles through and the coal that is adhering to the shale stays intact and the coal falls off and can be processed as fines as Higher-grade coal. This can be done at a tenth of the price of usual crushing and screening methods and more available coal can be liberated and sold rather than ending up on the dump or needing washing to be obtained.
We all know that diamonds sit in the minus 30 to 40mm fraction where as much as 70% of feedstock is above 30mm and the trommel can send all minus 50mm to the diamond processing plant. With the trommel you can do it all in field and leave all the rest behind as waste. This will reduce wear and tear compared to a conventional scalping plant.
Demand for gabions, ballast, riprap, armour rock etc are increasing and the use of a tracked trommel enables quarries to start with large size rock and screen up to three separate streams without the need for crushing. This results in more available saleable product and dramatically reduces wear and tear of secondary screens if required for smaller sized materials. Depending on the location and projects in the pipeline the trommels can significantly reduce the ROI of the quarry and the equipment.
- Borrow pits and recycling
The tracked trommel comes into its own with the ability to process large rocks on site wherever road and railway construction or flood protection requires the use of borrow pits. With the ability to process large rocks in many instances no additional processing is required. The trommels ability to handle large sizes and rebar makes it ideal for demolition and processing work.
While these are some of the new applications that can be unlocked by MDS trommels the machines are also efficient in run-of-the-mill work wherever speed and efficiency is required. The agreement with ELB Equipment ensures the availability wherever they are needed in southern Africa and enjoying the full service and support of the company’s large branch and dealer network.
South African launch of MDS M515 Track Trommel
ELB Equipment recently received its first MDS M515 Track Trommel for distribution into southern Africa. The machine is set to provide mobility and vigorous screening ability of all types of mediums with the ability to accept rocks up 800mm. It is a versatile machine suitable for overburden, clay, riprap/armour rock, steel slag, limestone, primary screening, demolition and blasted rock. It comes complete with fold out stockpiling conveyor, mid-product and fines conveyors.