Filtration Process Optimization: Rheological Behavior of a Filter Cake at Different Moisture Contents

Abstract : 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.
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Chemical Engineering and Technology, Wiley-VCH Verlag, 2016, Mechanical Particle-fluid Separation Technology, 39 (3), pp.515-521. 〈10.1002/ceat.201500426〉
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Damien Bourcier, Yan Siong Kong, Jean-Pierre Feraud, Denis Ode, Didier Colson, et al.. Filtration Process Optimization: Rheological Behavior of a Filter Cake at Different Moisture Contents. Chemical Engineering and Technology, Wiley-VCH Verlag, 2016, Mechanical Particle-fluid Separation Technology, 39 (3), pp.515-521. 〈10.1002/ceat.201500426〉. 〈hal-01279592〉

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