How to separate sand from marble and graphite?

20 April 2024 1 9K Report

I'm doing a XRD/XRF analysis for sandstone sample from a borehole, the sample is mixed with other materials from the drilling fluid like graphite and marble, all these material falling in range 20 - 150 microns, that makes it hard to get results from the analysis; so any ideas about how to remove the graphite and marble?

Yuri Mirgorod

Ahmed A. Rashad

I can only recommend using flotation for separation. Graphite is poorly wetted by water. It can be separated first. It is more difficult to separate sand and marble. But flotation reagents can be selected experimentally for them. If you take up this technology, you can create an invention. There may already be patents on this topic.

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