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 contributionpeer-review

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 CaCO3 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 languageEnglish
Title of host publicationAdvances in Sintering Science and Technology - A Collection of Papers Presented at the International Conference on Sintering
Pages53-60
Number of pages8
StatePublished - 2010
Externally publishedYes
EventAdvances in Sintering Science and Technology - International Conference on Sintering 2008 - La Jolla, CA, United States
Duration: 16 Nov 200820 Nov 2008

Publication series

NameCeramic Transactions
Volume209
ISSN (Print)1042-1122

Conference

ConferenceAdvances in Sintering Science and Technology - International Conference on Sintering 2008
Country/TerritoryUnited States
CityLa Jolla, CA
Period16/11/0820/11/08

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