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The Effect of Freezing and Thawing on the Dewatering of Oil Sands Sludge. IN: Proceedings of the Conference Reclamation, A Global PerspectiveDownload
Oil sands processing operations in northeastern Alberta generate 25 x 106 m3 of water-fines mixtures (sludge) per year. The fines settle in several weeks but will not consolidate to more than 35% solids, even over centuries. Freezing and thawing the oil sands sludge led to rapid dewatering. ...
The dewatering of oil sands sludge is a major technological, economical, and environmental challenge to the oil sands industry of northeastern Alberta. Sludge is a mixture of small mineral particles (less than 44 µm in diameter), residual bitumen from the extraction process, and water. Sludge...