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Influence of Particle Properties on Filter Cake Compaction Behavior under Oscillatory Shear

Yildiz, Tolga 1; Gegenheimer, Joel 1; Gleiß, Marco 1; Nirschl, Hermann 1
1 Institut für Mechanische Verfahrenstechnik und Mechanik (MVM), Karlsruher Institut für Technologie (KIT)

Abstract:

Filter cake compaction is a common method for mechanical deliquoring of compressible filter cakes. In addition to the conventional squeezing compaction method, applying oscillatory shear to filter cakes at low pressure is an alternative compaction process in cake filtration. While basic differences in terms of compaction success have already been identified for various materials, a systematic analysis of the influence of material properties on compaction behavior under oscillatory shear is missing. The present work addresses the influence of particle size distribution and increasing particle agglomeration on the compaction success of oscillatory shear to further clarify the process knowledge and applicability. The compressibility achieved by this technique was investigated for calcium carbonate materials with various particle size distributions. The results show that the compaction potential increases from 17.3% for the coarsest material (𝑥50,3 = 23.5 μm) to 26.6% for the finest material (𝑥50,3 = 2.3 μm) with decreasing mean particle size. The more widely distributed material exhibits a higher compaction potential of 21.7% compared to 18.4% for the narrowly distributed material. ... mehr


Verlagsausgabe §
DOI: 10.5445/IR/1000161512
Veröffentlicht am 21.08.2023
Originalveröffentlichung
DOI: 10.3390/pr11072076
Scopus
Zitationen: 1
Web of Science
Zitationen: 1
Dimensions
Zitationen: 1
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Mechanische Verfahrenstechnik und Mechanik (MVM)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2023
Sprache Englisch
Identifikator ISSN: 2227-9717
KITopen-ID: 1000161512
Erschienen in Processes
Verlag MDPI
Band 11
Heft 7
Seiten Art.-Nr.: 2076
Bemerkung zur Veröffentlichung Gefördert durch den KIT-Publikationsfonds
Vorab online veröffentlicht am 12.07.2023
Schlagwörter cake filtration; mechanical deliquoring; compressible filter cakes; vibration; compaction; particle size distribution
Nachgewiesen in Web of Science
Dimensions
Scopus
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