Largest to-date DMS diamond-processing
module for Miba
The new 200 t/h dense-media separation (DMS) module to be delivered
to Miba in Mbuji Mayi in the Democratic Republic of the Congo (DRC)
will be the largest diamond-processing module supplied by BATEMAN
to date. It is an upgrade of BATEMAN's standard 150 t/h unit, which
is now well proven in the industry, six having been supplied since
the first one was delivered in 1998.
The new module will form part of Miba's 400 t/h NLK2 kimberlite-treatment
plant and is in effect a repeat order. Miba's NLK1 diamond-processing
facility was supplied by BATEMAN in 1998.
The BATEMAN policy of continuous improvement to the design of its
modular plants by incorporating feedback from experience in the field
was again applied in this project. As a result several new features
have been designed into the new model to enhance its performance.
The new layout facilitates ease of maintenance and operation. The
incorporation of four 420 mm diameter cyclones improves the recovery
efficiency of smaller diamonds, the carefully chosen screens enhance
processing efficiency and design changes in the magnetic separation
system facilitate recovery of the ferrosilicon heavy medium used in
the DMS circuit.
The processing circuit of the NLK2 module comprises feed-preparation
screens, mixing boxes, cyclone feed pumps, float and sink screens
and combined collection sumps for the heavy and dilute media. Besides
the cyclones which separate the diamonds, care has been taken to ensure
the correct media densification using tube densifiers. The magnetic
separators recover the ferrosilicon from the dilute medium. The plant
is equipped with all the required pumps, screens, piping and control
circuits.
The total weight of the plant, which comprises 10 modules, is 130t.
Before transport to site, it will be trial erected at the factory
and fully tested. It will then be disassembled and transported to
the mine. The first part of the trip to the mine's railway siding
at Mwene-ditu in the DRC will be handled by Spoornet, the South African
rail utility, for which about 90 DZ rail wagons in total will be needed
to carry the whole consignment. Then road transport will be utilised
by Miba for the remaining 100 km to the mine.
For further information, please contact:
Robert Abate, General Manager, Modular Plants, on
+27-11-899-2238 or email modular@batemanengineering.com;
or
Derek Lahee, Process Manager, Modular Plants, on
+27-11-899-2847 or email modular@batemanengineering.com.
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