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Filtration Process Optimization: Rheological Behavior of a Filter Cake at Different Moisture Contents
Author(s) -
Bourcier Damien,
Kong Yan Siong,
Feraud JeanPierre,
Ode Denis,
Colson Didier,
Puel François
Publication year - 2016
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/ceat.201500426
Subject(s) - rheology , materials science , rheometer , filtration (mathematics) , viscosity , shear rate , water content , filter cake , moisture , apparent viscosity , composite material , filter (signal processing) , repeatability , geotechnical engineering , chemistry , chromatography , mathematics , engineering , statistics , electrical engineering
Transferring a wet cake from a filter to a dryer or furnace could severely lower the productivity of a whole process when the wet cake exhibits high viscosity and a sticky paste behavior. Depending on their moisture content, three distinct regions of rheological behavior were identified. Among them, only the granular solid type had sufficient flowability during the transfer operation. It was possible to discriminate the flow behavior more quantitatively by determining two transition values of moisture content. Rheological measurements were carried out at a constant shear rate representative of that encountered in the mechanical transfer system used at plant scale. The use of vane geometry for the rheometer was necessary to ensure an accurate repeatability of the viscosity measurements.