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The Effect of Fine Flocculating Particles and Fine Inerts on Carrier Fluid Viscosity Open Access


Other title
aggregate structures
oil sands industry
carrier fluid viscosity
flocculating suspensions
aggregate volume fraction
silica sand
Type of item
Degree grantor
University of Alberta
Author or creator
Asadi Shahmirzadi, Azadeh
Supervisor and department
Sanders, Sean (Chemical and Materials Engineering)
Examining committee member and department
Sanders, Sean (Chemical and Materials Engineering)
Yeung, Tony (Chemical and Materials Engineering)
Nobes, David (Mechanical Engineering)
Zhang, Hao (Chemical and Materials Engineering)
Department of Chemical and Materials Engineering
Chemical Engineering
Date accepted
Graduation date
Master of Science
Degree level
Design and maintenance of coarse-particle Newtonian slurries pipeline requires the knowledge of carrier fluid viscosity. Since measurements of carrier fluid viscosity are difficult, numerous empirical correlations are typically used to predict this value. The main deficiency of available correlations arises from the fact that the viscosity is predicted from the volume fraction of total fines. This approach neglects the different effects of various fines present in the suspensions (e.g., flocculating versus inert fines). In this study, idealized aqueous slurries consisting of inert silica (d ~ 20 μm) and flocculating kaolinite clay were tested. A novel optical-based particle size analysis technique (FPIA) was commissioned to study flocculating and inert fines and estimate volume fraction of aggregates. Experimental data suggest that viscosity correlations are improved significantly if the volume fraction of aggregates is used as the primary correlating parameter, rather than the more conventional use of total fine solids volume fraction.
Permission is hereby granted to the University of Alberta Libraries to reproduce single copies of this thesis and to lend or sell such copies for private, scholarly or scientific research purposes only. Where the thesis is converted to, or otherwise made available in digital form, the University of Alberta will advise potential users of the thesis of these terms. The author reserves all other publication and other rights in association with the copyright in the thesis and, except as herein before provided, neither the thesis nor any substantial portion thereof may be printed or otherwise reproduced in any material form whatsoever without the author's prior written permission.
Citation for previous publication
Asadi Shahmirzadi, A., R.S. Sanders, "The Effect of Fine Flocculating Particles and Fine Inerts on Slurry Pipeline Operation", Oral Presentation, Oil Sands 2011 Conference, Edmonton, Canada (2011).Asadi Shahmirzadi, A., R.S. Sanders, "Effects of Fine Flocculating Particles and Fine Inerts on the Viscosity of Suspensions", Poster Presentation, ACS 85th Colloidal Conference, Montreal, Canada (2011).

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