Abstract
When pressure filtration is used to produce composite materials from a mixed suspension, segregation of the different particle types is apt to occur due to different sedimentation velocities. This results in an inhomogeneous, thus inferior product. To understand and reduce segregation, a model is proposed to describe segregation due to gravitational settling during pressure filtration from a dispersed suspension consisting of two types of particles with different sizes and/or densities. The model combines the consolidation mechanisms of sedimentation and filtration and predicts the composition profile in the formed material. Experimentally determined cast profiles are in good agreement with model predictions.
Original language | English |
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Pages (from-to) | 2595-2606 |
Number of pages | 12 |
Journal | Chemical engineering science |
Volume | 55 |
Issue number | 14 |
DOIs | |
Publication status | Published - 2000 |
Keywords
- Suspension processing
- Sedimentation
- Segregation
- Filter pressing
- Filtration
- Cast formation