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Wall mass transfer in horizontal slurry pipelines
Author(s) -
Postlethwaite John,
Holdner D. N.
Publication year - 1975
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.5450530105
Subject(s) - slurry , mass transfer , mass transfer coefficient , momentum transfer , heat transfer , aqueous solution , mechanics , range (aeronautics) , momentum (technical analysis) , deposition (geology) , materials science , pipeline transport , chemistry , thermodynamics , mineralogy , composite material , geology , physics , optics , paleontology , organic chemistry , finance , sediment , scattering , economics
Measurements have been made of the rate of mass transfer of dissolved oxygen to the walls of 5 cm diameter horizontal pipes carrying aqueous slurries of sand and iron ore, in the concentration range 10 — 20 vol % at velocities up to twice the critical value for deposition. The results which show that the suspended particles greatly increase the rate of mass transfer are discussed in terms of the analogies and are compared with the results of previous workers for heat and momentum transfer. In the case of mass transfer in systems with high Schmidt numbers it appears that there is a specific effect of the solid particles relating to the disruption of the viscous sub‐layer.