Original title: The Deflocculation of Kaolin Suspensions – the Effect of Various Electrolytes
Authors: Pěnkavová, Věra ; Guerreiro, M. ; Tihon, Jaroslav
Document type: Papers
Conference/Event: Konference chemického a procesního inženýrství CHISA 2013 /60./, Srní, Šumava (CZ), 2013-10-14 / 2013-10-17
Year: 2013
Language: eng
Abstract: The deflocculation effect of conventional additives to kaolin suspensions is evaluated from the results standard rheological measurements. Several widely used electrolytes (NaOH, Na2CO3, Na2SiO3, SHMP = sodium hexametaphosphate, and CMC = sodium salts of carboxymethylcellulose) have been tested. The optimal concentrations of these deffloculants, in respect to reaching the maximum reduction of initial suspension viscosity, are found. The stability of deflocculated kaolin suspensions against sedimentation is evaluated and different aspects of the observed flow enhancement discussed. Inorganic electrolytes are found to be more effective in viscosity reduction, but on the other hand, low-molecular organic CMC additives produce more stable final suspensions.
Keywords: deflocculants; kaolin suspensions; viscosity measurements
Project no.: GAP101/12/0585 (CEP)
Funding provider: GA ČR
Host item entry: Sborník, ISBN 978-80-02-02500-9
Note: Související webová stránka: www.chisa.cz/2013
Rights: This work is protected under the Copyright Act No. 121/2000 Coll.

Institution: Institute of Chemical Process Fundamentals AS ČR (web)
Original record: http://hdl.handle.net/11104/0225371

Permalink: http://www.nusl.cz/ntk/nusl-161341


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