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Continuous separation of suspensions containing light and heavy particle species
Author(s) -
NasrElDin Hisham A.,
Masliyah Jacob H.,
Nandakumar Krishnaswamy
Publication year - 1999
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.5450770530
Subject(s) - volume (thermodynamics) , instability , volume fraction , range (aeronautics) , particle (ecology) , materials science , volumetric flow rate , particle size , fraction (chemistry) , separation (statistics) , analytical chemistry (journal) , chemistry , chromatography , mineralogy , mechanics , thermodynamics , composite material , physics , mathematics , geology , statistics , oceanography
Continuous separation of bidisperse suspensions containing particles of significantly different size and density in a vertical settler was examined. The effects of the feed total solids volume fraction, composition, and flow rate on the performance of the settler were investigated. For feed total solids volume fractions less than 0.1, a kinematic model based on the Patwardhan and Tien (1985) expression for relative velocity was found to predict the experimental measurements fairly well over a wide range of parameters. For feed total solids volume fractions greater than 0.2, a strong local instability was observed in the settler. This local instability significantly improved the performance of the settler in some cases.