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Porosity Prediction for Fine‐Grained Filter Cake
Author(s) -
Dueck J.,
Zvetanov E.,
Neeße Th.
Publication year - 2000
Publication title -
chemical engineering and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.403
H-Index - 81
eISSN - 1521-4125
pISSN - 0930-7516
DOI - 10.1002/(sici)1521-4125(200001)23:1<18::aid-ceat18>3.0.co;2-p
Subject(s) - agglomerate , porosity , drag , materials science , particle (ecology) , composite material , filter (signal processing) , mechanics , filtration (mathematics) , filter cake , surface energy , particle size , chemical engineering , mathematics , physics , engineering , geology , oceanography , statistics , electrical engineering
A physically justified model for the prediction of porosity of fine‐grained filter cake is introduced. The geometrical assumptions are formation of spherical agglomerates in the filter cake and random packing of the agglomerates. The mechanical stability of the agglomerates is determined by comparing the particle–particle adhesive forces with the agglomerate disrupting forces, drag force and force of gravity. The assumptions finally lead to a relationship involving filtration parameters and the free specific surface energy of the particles. The model has been verified comparing the predictions with experimental results.