Modern Quarrying October-November 2017

MARKET PLACE

MDS trommel screens set the benchmark The mining sector in Africa has shown particular interest in MDS trommel screens and apron feeders, designed especially for min- eral processing and recycling applications. “By using trommels to remove clay and wet sticky material, crusher and vibratory screen blockages are prevented and this efficiency contributes to increased production,” says Ken Mouritzen, MD, BLT. “Flexible MDS systems are used to remove the small fraction fines from a waste stream, to make the remaining material easier to handle for the operatives or processing equipment. “Heavy duty MDS trommels, which are available as mobile and stationary units, have output capacities between 250 and 1 000 t/hour and can handle rock size up to 1,5 m. “The most popular machine in the MDS range – the M515 track trommel, with a 30 t hopper capacity – has been supplied with fold out stockpiling conveyors and is able to move around a mine and fromone site to another.Thismachine is capable of producing three products concurrently, at an output of over 400 t/hour. “In a recent project, this machine removed fines up to 120 mm through the radial fines conveyor at the rear of the unit. A mid-sized product (120-250 mm) was produced through the left conveyor and oversize materials (250-750 mm) out the end of the machine. A notable feature of this unit is that it is efficiently sepa- rates difficult and sticky materials and handles large ROM.” Other units in the range include M615 static trommels, designed for removing soils and fines from rip rap or blasted rock. These machines have an output capacity between 350 and 500 t/ hour. The M820 unit is a large, heavy duty rock trommel, capable of screening rock up to 1,0 m in size, at approximately 750 t/hour. This modular machine is available with three or four splits and is

suitable for cleaning dirty rock or for screening blasted material. The static M825 machine, which handles rocks up to 1,5 m in size, is perfect as a primary screener for material direct from a blast. The hopper, with 100 t capacity, can be loaded by dump trucks, with an output of 1 250 t/hour. This unit is also available with a hydraulic rock breaker. MDS apron feeders, with an electric or hydraulic drive, are available as standard units for quarries, aggregates or recycling applications and as heavy duty machines for mining, ore and coal environments. www.blt.co.za

The BLT MDS can move with ease from one site to another.

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MODERN QUARRYING

October - November 2017