The results were obtained using a single-pass magnetic separator on the oolitic hematite from the Project. The tests, which were undertaken by consultants Nagrom, under the supervision of SKM, confirmed that the highly saleable concentrate, which also contained just 2 per cent alumina, can be produced using a SLon magnetic separator with a yield of 56 per cent. This processing route is used widely in China.
The testwork was conducted on the pisolitic mineralisation from the Hodgson Downs Resource and is based on a progressive grinding circuit (rolls crusher) and single magnetic separation from one pass. The testwork confirms the potential for upgrade with minimum processing stages.
Optimisation studies are continuing to further enhance the production potential of this oolitic hematite.
The SLon Magnetic Separator was designed specifically to overcome the various drawbacks of traditional Wet High-Intensity Magnetic Separator (WHIMS) by incorporating a pulsating mechanism and vertical magnetic ring configuration. The SLon has received wide acceptance throughout China for iron ore recovery, with over 500 units in operation. This has been driven by the need to achieve superior metallurgical performance and low operating costs in the recovery of iron units.
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magnetic rings
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