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MEI Online: Commodities: Non-Metallic Ores: Diamond: Latest News: December 20th 2004


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:: DMS Replaces Pan Technology at Kimberley Mine

Bateman has been awarded a R53M contract by De Beers to supplement the existing pan technology with dense-media separation (DMS) technology to process diamondiferous material in an upgrade to their New Treatment Plant (NTP) at Kimberley Mines, Northern Cape, RSA.

The NTP facility was established some 50 years ago and is dependent on underground material for the generation of the 'puddle' (a mixture of water and mud in which the separation takes place), on which the pan operation depends. Its source is currently a blend of underground and dump material but, once underground operations cease, the plant will be fed from the dump only. While it was initially planned to close down the NTP, the feasibility study by De Beers and Bateman determined the good potential for converting to a DMS-based operation.

The project commenced in mid February 2004 for hand-over at year end. The contract comprises the design and supply of three new 150 t/h DMS fines modules with 70 t feed hoppers, modification to the conveyor systems to divert material to the DMS modules, provision for ancillary facilities such as pumping of process water to the new DMS modules, the electrical supply, the motor-control centre and SCADA (supervisory control and data acquisition) facilities, as well as all earthworks and civil construction. Once the project has been completed successfully, the -8 mm material from the blended feed will be diverted from the pan plant to the three DMS modules, with the remaining material continuing to be processed through the pan plant.




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