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Deflocculant consumption of clay suspensions as a function of specific surface area and cation exchange capacity

Published online by Cambridge University Press:  09 July 2018

D. G. G. Delavi ,
A. De Noni Jr  and
D. Hotza
D. G. G. Delavi
Affiliation:
Graduate Program in Materials Science and Engineering (PGMAT), Federal University of Santa Catarina (UFSC), 88040-900 Florianópolis, SC, Brazil
A. De Noni Jr
Affiliation:
Graduate Program in Materials Science and Engineering (PPGCEM), University of Southernmost Santa Catarina (UNESC), 88806-000 Criciúma, SC, Brazil
D. Hotza*
Affiliation:
Graduate Program in Materials Science and Engineering (PGMAT), Federal University of Santa Catarina (UFSC), 88040-900 Florianópolis, SC, Brazil
*
*E-mail: [email protected]
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Abstract

Ceramic tile production by the wet route requires clay suspensions with a high solid content and low viscosity. In this work the deflocculation of clays in aqueous suspensions was investigated by varying the type of clay and additive. Three kaolinitic and two illitic clays were characterized and dispersed with deflocculants based on lithium, sodium and potassium silicates and polyacrylates. The clays were characterized by chemical and mineralogical analyses, particle size distribution, zeta potential, organic carbon content, cation exchange capacity (CEC) and specific surface area (BET). Deflocculation curves were determined by measuring the viscosity for 50 wt.% clay slips. The results indicate that additive consumption is closely related to CEC and BET, which correspond respectively to the chemical and physical characteristics of the clay mineral's surface. Moreover, viscosity values at the deflocculation point are closely related to BET.

Keywords

clay suspensionsdeflocculationcation exchange capacityspecific surface area
Type
Research Article
Information
Clay Minerals , Volume 48 , Issue 3 , June 2013 , pp. 473 - 480
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 2013

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References

Alemdar, A., Öztekin, N., Erim, F.B., Ece, Ö.I. & Güngör, N. (2005) Effect of polyethyeinemine adsorption on the rheology of bentonite suspensions. Bulletin of Materials Science, 28, 287–291.Google Scholar
Amoros, J.L., Beltrán, V., Sanz, V. & Jarque, J.C. (2010) Electrokinetic and rheological properties of highly concentrated kaolin dispersions: influence of particle volume fraction and dispersant concentration. Applied Clay Science, 49, 33–43.Google Scholar
Andreola, F., Castellini, E., Ferreira, J.M.F. & Romagnoli, M. (2006) Effect of sodium hexametaphosphate and ageing on the rheological behavior of kaolin dispersions. Applied Clay Science, 31, 56–64.Google Scholar
Bergaya, F.B., Theng, K.G. & Lagaly, G. (2006) Handbook of Clay Science, 1246 pp. Elsevier, Amsterdam.Google Scholar
Coelho, C., Hotza, D. & Roqueiro, N. (2002) Phases quantification of ceramic raw materials. In: VII Congreso Mundial de Calidad del Azulejo y del Pavimento Ceramico, Castellon.Google Scholar
De Noni, A., Garcia, D.H. & Hotza, D. (2002) A modified for the viscosity of ceramic suspensions. Ceramics International, 28, 731–735.Google Scholar
Delavi, D.G.G. (2011) Defloculação de suspensões aquosas de argilas e sua correlação com caracterizações químicas e de superfícies. Dissertation. Federal University of Santa Catarina, Brazil.Google Scholar
Dinger, D.R. (2002) Rheology for ceramists, 213 pp. American Ceramic Society, Westerville.Google Scholar
Gardolinski, J.E.F.C. & Lagaly, G. (2005) Grafted organic derivatives of kaolinite: I. Synthesis, chemical and rheological characterization. Clay Minerals, 40, 537–546.CrossRefGoogle Scholar
Gomes, C.M., Reis, J.P., Luiz, J.F., Oliveira, A.P.N. & Hotza, D. (2005) Deflocculation of triaxial ceramic suspensions using a mixture design approach. Cerâmica, 51, 336–342.Google Scholar
Lemos, A.F. & Ferreira, J.M.F. (2001) Influence of organic matter on rheology and ageing behaviors of ball clay slurries. Pp. 110–120 in: 3rd National Meeting of the Portuguese Society of Rheology, Mirandela.Google Scholar
Louven, I., Nigmatullin, R., Zavidonov, A., Gusev, Y., Manurov, I., Kaumov, S. & Muslimov, R. (2002) Analysis of dielectric relaxation data in watersaturated sands and clays. Journal of Non-Crystalline Solids, 305, 255–260.Google Scholar
Marco, P., Labanda, J. & Lorens, J. (2004) The effect of polyelectrolyte chemical compositions on the rheological behavior of kaolin suspensions. Powder Technology, 148, 43–47.Google Scholar
Mensah, J.A. (2007) Enhance flocculation and dewatering of clay mineral dispersion. Powder Technology, 179, 73–78.Google Scholar
Ortega, F.S. (1997) Aspectos da Reologia e da Estabilidade de Suspensões Cerâmicas: Parte II. Cerâmica, 43, 238–243.CrossRefGoogle Scholar
Pandolfelli, V.C., Oliveira, R., Studart, A.R. & Pileggi, R.G. (2000) Dispersão e Empacotamento de Partículas. Fazendo Arte Editorial, São Paulo.Google Scholar
Penner, D. & Lagaly, G. (2001) Influence of anions on the rheological properties of clay mineral dispersions. Applied Clay Science, 19, 131–142.Google Scholar
Romagnoli, M. & Andreola, F. (2007) Mixture of deflocculants: A systematic approach. Journal of the European Ceramic Society, 27, 1871–1874.Google Scholar
Santos, P.S. (1992) Ciência e tecnologia de argilas. 1089 pp. Blücher, Brazil.Google Scholar
Tomasik, P., Schilling, C.H., Jankowiak, R. & Kim, J.C. (2003) The role of organic dispersants in aqueous alumina suspensions. Journal of the European Ceramic Society, 23, 13–919.Google Scholar
Traiphol, N., Suntako, R. & Chanthornthip, K. (2010) Roles of polymeric dispersant charge density on lead zirconate titanate aqueous processing. Ceramics International, 36, 2147–2153.CrossRefGoogle Scholar
Tunç, S. & Duman, O. (2008) The effect of different molecular weight of poly(ethylene glycol) on the electrokinetic and rheological properties of Na-bentonite suspensions. Colloids and Surface, 317, 93–99.Google Scholar
aldivieso, F., Goeuriot, P. & Thevenot, F. (1997) Dispersion of three ceramic powders in a slurry. The Al2O3–AlN–SiC mixture. Journal of the European Ceramic Society, 17, 377–382.Google Scholar
Yanik, G. (2011) Mineralogical crystallographic and technological characteristics of Yaylayolu kaolin (Kütahya, Turkey). Clay Minerals, 46, 397–410.Google Scholar
Ziesmer, Z. & Lagaly, G. (2007) Surface modification of bentonites. VI. Sol-gel transitions of sodium and calcium montmorillonite dispersions in the presence of anionic end-capped poly(ethylene oxides). Clay Minerals, 42, 563–573.Google Scholar
Zupancic, A., Lapasin, R. & Kristoffersson, A. (1997) Influence of particle concentration on rheological properties of aqueous a-Al2O3 suspensions. Journal of the European Ceramic Society, 18, 467–477.Google Scholar