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Particle attrition in shear flow of concentrated slurries
Author(s) -
Karabelas A. J.
Publication year - 1976
Publication title -
aiche journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.958
H-Index - 167
eISSN - 1547-5905
pISSN - 0001-1541
DOI - 10.1002/aic.690220421
Subject(s) - attrition , shearing (physics) , slurry , comminution , mechanics , shear flow , materials science , particle size , brittleness , couette flow , particle (ecology) , shear rate , shear (geology) , kinetic energy , mineralogy , flow (mathematics) , composite material , chemistry , classical mechanics , physics , geology , rheology , metallurgy , medicine , oceanography , dentistry
A first order kinetic formulation of brittle particle attrition is suggested. Experimental data show that it applies to coal particle attrition in Couette flow. These data reveal that particles are reduced by loss of surface protuberances, which are much smaller than their mean diameter. It is also shown how changes of the size spectrum, due to shearing, can be predicted.