Original title: Spray drying of multi-component suspensions with different density
Translated title: Rozprašovací sušení vícesložkových suspenzí s rozdílnou hustotou
Authors: Brožek, Vlastimil ; Domlátil, J.
Document type: Papers
Conference/Event: International Congress of Chemical and Process Engineering CHISA 2006/17th./, Praha (CZ), 2006-08-27 / 2006-08-31
Year: 2006
Language: eng
Abstract: [eng] [cze]
This article deals with the issues faced during the preparation of multi-component powders having largely different densities in spray dryers. On a model system, TiO2 – W with densities TiO2 ρ= 4,23 g/cm3 and W ρ= 19,3 g/cm3 , processed in an industrial facility with a 100kg/h capacity using a temporary binder carboxyl-methyl-cellulose, the dependence of composition on the size and distribution of primary particles. Compositional changes and inhomogeneous component distribution takes place due to sedimentation in the feed line between the suspension mixer and drying nozzle. The suspension density and the shape factor that influences the transport velocities of the starting powders, also play a role. The overall effect is assessed by analysis of the properties of the final product, plasma sprayed TiO2-W cermet. Na modelovém příkladu soustavy TiO2-W je popsána příprava vícesložkových sferoidních prášků se značně rozdílnou hustotou jednotlivých komponent v rozprašovací sušárně a jsou diskutovány problémy při získávání homogenního produktu vhodného k plazmovým nebo žárovým depozicím cermetů.
Keywords: multi-component powders; plasma spraying; spray drying
Project no.: CEZ:AV0Z20430508 (CEP), GA104/05/0540 (CEP)
Funding provider: GA ČR
Host item entry: Summaries, ISBN 80-86059-45-6
Note: Související webová stránka: www.chisa.cz

Institution: Institute of Plasma Physics AS ČR (web)
Document availability information: Fulltext is available at the institute of the Academy of Sciences.
Original record: http://hdl.handle.net/11104/0136011

Permalink: http://www.nusl.cz/ntk/nusl-35689


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Research > Institutes ASCR > Institute of Plasma Physics
Conference materials > Papers