Electrophoretic process for separating aqueous mineral...

Details Electrophoretic process for separating aqueous mineral... Electrophoretic process for separating aqueous mineral...

B - Operations, Transporting

01

D

204/99.09

B01D 43/00 (2006.01) B01D 57/02 (2006.01) C25B 7/00 (2006.01)

Patent

CA 1171382

"ELECTROPHORETIC PROCESS FOR SEPARATING AQUEOUS MINERAL SUSPENSIONS" ABSTRACT OF THE DISCLOSURE An aqueous suspension of fine mineral solids, for example oil sand tailings sludge, is separated into separate solid and liquid components by first chemically conditioning the suspension with the addition of lime, and thereafter passing an electrical potential between electrodes submerged in the suspension. The electrical potential causes the solids to migrate toward, and deposit on, the positive of the electrodes. The lime pre-treatment allows the electrode deposit to dry, through electroosmosis, to render it sufficiently dry by disposal. The chemical conditioning step preferably includes adding a carbonate- or bicarbonate- forming reagent after the lime addition.

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