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Adhesion of Bitumen to a Metal Surface in a Flowing Oil Sands Slurry
Author(s) -
Xu Yuming,
Dabros Tadeusz,
Friesen Waldemar I.,
Maciejewski Waldemar B.,
Czarnecki Jan
Publication year - 2004
Publication title -
the canadian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 67
eISSN - 1939-019X
pISSN - 0008-4034
DOI - 10.1002/cjce.5450820420
Subject(s) - slurry , asphalt , oil sands , materials science , adhesion , metallurgy , impeller , coating , composite material , engineering , mechanical engineering
Bench‐scale experiments were conducted to study the behaviour of oil sands slurries. While a slurry was being stirred with a standard impeller, the mass of bitumen, M ad , that adhered to a steel probe dipped into the slurry was measured. M ad remained small up to a critical adhesion time, τ ad , and then increased rapidly. τ ad depended on ore grade, temperature, pH, and clay content. The implication for hydrotransport of oil sands is clear: τ ad should be greater than the residence time of the slurry to avoid the problem of bitumen coating the pipe wall and the attendant increase in pumping pressure.