Influence of suspension concentration on cast formation time in pressure filtration

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Biesheuvel, P. Maarten and Verweij, Henk (2000) Influence of suspension concentration on cast formation time in pressure filtration. Journal of the European Ceramic Society, 20 (7). pp. 835-842. ISSN 0955-2219

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Abstract:Expressions for the formation rate of an incompressible cast in batchwise pressure filtration are formally derived from Darcy's law and Kynch-theory for pure filtration and filtration with sedimentation and compared with experimental results from the filtration of submicron α-alumina dispersed in water. The influence of suspension concentration on the cast formation time is investigated numerically. A maximum cast formation time is found at a certain suspension concentration φs for pure filtration and a constant filling height. The value of the maximum cast formation time depends solely on the cast concentration if the filter resistance is negligible. For a constant final cast thickness, the cast formation time always decreases with increasing φs. The cast formation time in a filtration set-up decreases when particle sedimentation is important, especially when sedimentation and filtration have the same direction.
Item Type:Article
Copyright:© 2000 Elsevier
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Link to this item:http://purl.utwente.nl/publications/74360
Official URL:http://dx.doi.org/10.1016/S0955-2219(99)00209-5
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Metis ID: 105515