Effects of crystallization and vitrification on sintering properties of bentonite clay

H. Camacho, C. A. Martínez, P. E. García, H. J. Ochoa, J. T. Elizalde, A. García, A. Aguilar, M. Bocanegra, C. Domínguez

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Bentonite clays are frequently used in the formulation of structural ceramics at low concentration in spite of its chemical composition which is similar to kaolinite, the most used clay for this purpose. During the study of the sintering properties of natural bentonite clay, we found that the studied bentonite can be used as main component to formulate structural ceramic products where control of dimension is fundamental. According to our study, with ceramic formulation based on bentonite clay, during thermal treatment a plateau where dimensional changes are minimal can be used to sinter the ceramic pieces. This process represents a significant advance related to the conventional process where CaCO 3 is used to promote the crystallization/vitrification process of several phases by reaction of amorphous silica and amorphous meta kaolinite with the CaO produced during the thermal decomposition of CaCO 3 .
Original languageAmerican English
Title of host publicationEffects of crystallization and vitrification on sintering properties of bentonite clay
Pages53-60
Number of pages46
ISBN (Electronic)9780470408490
StatePublished - 13 Aug 2010
Externally publishedYes
EventCeramic Transactions -
Duration: 1 Jan 2012 → …

Publication series

NameCeramic Transactions
Volume209
ISSN (Print)1042-1122

Conference

ConferenceCeramic Transactions
Period1/01/12 → …

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