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How to settle Sepiolite clay fines? I need help settling sepiolite clay fines from saline process water. Anyone out there with experience?
Am trying to clean Mg4Si6O15(OH) 6H2O in a cemented (Duricrust) layer. It does have a fibrous structure at a sub-micron level. Very fine particles -45 micron is liberated during processing.
The clay fines are likely much finer than 45 microns. -45 is the cut-point of our desliming cyclones. I do not think we have ever done a PSD on the slimes. We just want to settle it to clean our process water and send the thickened slimes to the slimes dams. Our "normal" clay fines settle at a reasonable rate and our plant thickeners can handle it, but a certain area of the mine contains sepiolite clay and it doesn't settle at all. We tested a number of flocculants, but without success.