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Post by Eiruof Reteip on Feb 8, 2006 6:56:06 GMT
What are the chances of separating or concentrating a mineral with an sg of 3.2 from 2.7 sg gangue. Possibly some of the new enhanced gravity sep methods or teetered bed? Spiral?
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Post by Galvin moderator on Feb 15, 2006 2:11:59 GMT
The problem described sounds similar to the recovery and concentration of heavy minerals such as titanite (SG 3.4 to 3.6) and ilmenite (SG 4.5) from silica sand (SG 2.6). Spirals have certainly had success, though I do not know the specific success for the lower density fraction of titanite. However, float-sink analysis is normally done at SG3.3, and high recoveries are generally possible. It would be interesting to know the success obtained using the other devices you mention.
I have a direct interest in a device known as the Reflux Classifier and have a publication listed in Gravity 06 on this subject. This system utilises a series of inclined channels above a fluidised bed, and we show (rigorously) that there exists a mechanism that selectively conveys lower density particles along the channels, while promoting the segregation of higher density particles down the channels.
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