Investigation of Properties of Composite Ceramics

  • Valdas BALKEVIČIUS∗, Jolanta PRANCKEVIČIENĖ Vilnius Gediminas Technical University
Keywords: mineral wool waste, low melting illite clay, composite ceramics.

Abstract

Recycling of fibrous mineral wool waste represents a rather serious problem. The results of research presented in the
study show that the suggested composite ceramic system out of low melting illite clay and fibrous mineral wool waste is
a promising way for solving the problem of mineral wool waste utilization. The performed researches into the properties
of the system under investigation showed that upon introduction of fibrous mineral wool waste into the composition of
low melting clay, the temperature expansion interval decreased from 810 °C to 775 °C. It was found out that the free
oxides CaO and MgO forming during decarbonization of clay, reacted actively with clay minerals and that
crystallization of reaction products resulted in anorthite and diopside. The experimental investigations of fusibility
showed that upon introduction of 30 % fibrous mineral wool waste into the composition of low melting clay, the melting
start temperature of composite mixture increased from 1115 °C to 1135 °C.

Published
2008-03-11
Section
CERAMICS AND GLASSES