Determination of Sintering Activity of Sodium-Potassium Feldspar

Article Preview

Abstract:

The aim of the article is to describe the sintering activity of industrially milled sodium potassium feldspar to determine of optimal firing temperature during fast firing typical for e.g. production of dry pressed ceramic tiles. The change of porosity, flexural strength, firing shrinkage and mineralogical composition in dependence on the firing temperature (1120 1210 °C) were determined on the test samples made from dry granulate prepared from the pure feldspar. Tested alkali sodium potassium feldspar is characterized by low sintering temperature (1190 °C) during fast firing (heating rate 10 °C/min). During the sintering process, feldspar gradually disappears in phases first of all potassium feldspar (microcline), sodium feldspar (albite) we can find in the fired body at firing temperature 1180 °C.

You might also be interested in these eBooks

Info:

Periodical:

Pages:

109-112

Citation:

Online since:

February 2014

Export:

Price:

Permissions CCC:

Permissions PLS:

Сopyright:

© 2014 Trans Tech Publications Ltd. All Rights Reserved

Share:

Citation:

* - Corresponding Author

[1] T., F. W. Barth: Feldspars (John Wiley & Sons, Great Britain 1969).

Google Scholar

[2] J., F. Schrairer: J. Geol. Vol. 58 (1950), p.512.

Google Scholar

[3] R. de Gennaro, M. Dondi, P. Cappeletti, G. Cerri, M. de Gennaro, G. Guarini, A. Langella, L. Parlato, Ch. Zanelli: Microporous and Mesoporous Materials Vol. 105 (2007), p.273.

DOI: 10.1016/j.micromeso.2007.04.023

Google Scholar

[4] F. H. Norton: Fine Ceramics Technology and Applications ( Malabar, R. E Krieger, 1970).

Google Scholar

[5] S. Kr. Das, K. Dana: Thermochimica Acta Vol. 406 (2003), p.199.

Google Scholar

[6] H. Alves, F. Melchiades, A. Boschi: Journal of the European Ceramic Society Vol. 32 (2012), p. (2095).

Google Scholar