| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Michrafy, Abderrahim
Universidad de Cantabria
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (10/10 displayed)
- 2018Compaction properties of dry granulated powders based on Drucker–Prager Cap modelcitations
- 2017Computational intelligence models to predict porosity of tablets using minimum featurescitations
- 2016Effect of roll compactor sealing system designs: a finite element analysiscitations
- 2016Effect of roll compactor sealing system designs: A finite element analysiscitations
- 2015Processing fine powders by roll presscitations
- 2013The effect of punch's shape on die compaction of pharmaceutical powderscitations
- 2008Size effect in transient thermal fatigue testing and thermo-mechanical screening of coatingscitations
- 2004Wall friction in the compaction of pharmaceutical powders: measurement and effect on the density distributioncitations
- 2001Heat transfer and thermo-mechanical stresses in a gravity casting die - Influence of process parameterscitations
- 2000Rôle du poteyage et de la température initiale du moule sur les sollicitations thermomécaniques des moules permanents de fonderie
Places of action
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article
Processing fine powders by roll press
Abstract
The gas trapped into fine powders causes specific problems like feeding disturbances during roll compaction process. In this study, the gas flow and its effect on the rolling process are numerically investigated in the rolling direction, using Darcy's law and assuming the permeability as a function of both material density and particle size through Carman-Kozeny relationship. The solid properties evolution is based on the Johanson model, whereas the solid speed is determined from the conservation of the material mass. Computational results of solid properties and gas pressure distribution are presented by considering bentonite powder properties. According to material and process parameters, especially rolling speed and powder permeability, we discuss conditions for the escape of gas through the porous material during the process and stability conditions of the feeding at the rolls' entry. Beyond the simplicity of the model (1D), it allows for a better understanding of fine powders processing by roll press. It highlights the combined effect of the permeability of the powder and the rotating speed on the gas pressure, during roll compaction process. (C) 2014 Elsevier B.V. All rights reserved.