Elaboration of New Ceramic Composites Containing Glass Fibre Production Wastes
Boletin de la Sociedad Espanola de Ceramics y Vidrio 2013
Ineta Rozenštrauha, Guntis Sosins, Linda Krāģe, Gaida Maruta Sedmale, Danute Vaiciukyniene

Two main by-products or waste from the production of glass fibre are following: sewage sludge containing montmorillonite clay as sorbent material and ca 50 % of organic matter as well as waste glass from aluminiumborosilicate glass fibre with relatively high softening temperature (> 600 °C). In order to elaborate different new ceramic products (porous or dense composites) the mentioned by-products and illitic clay from two different layers of Apriki deposit (Latvia) with illite content in clay fraction up to 80-90 % was used as a matrix. The raw materials were investigated by differential-thermal (DTA) and XRD analysis. Ternary compositions were prepared from mixtures of 15 - 35 wt % of sludge, 20 wt % of waste glass and 45 - 65 wt % of clay and the pressed green bodies were thermally treated in sintering temperature range from 1080 to 1120 °C in different treatment conditions. Materials produced in temperature range 1090 - 1100 °C with the most optimal properties - porosity 38 - 52 %, water absorption 39 - 47 % and bulk density 1.35 - 1.67 g/cm3 were selected for production of porous ceramics and materials showing porosity 0.35 - 1.1 %, water absorption 0.7 - 2.6 % and bulk density 2.1 - 2.3 g/cm3 - for dense ceramic composites. Obtained results indicated that incorporation up to 25 wt % of sewage sludge is beneficial for production of both ceramic products and glass-ceramic composites according to the technological properties. Structural analysis of elaborated composite materials was performed by scanning electron microscopy(SEM). By X-ray diffraction analysis (XRD) the quartz, diopside and anorthite crystalline phases were detected.


Keywords
Aluminium borosilicate glass; Glass-ceramics; Illite clay; Montmorillonite clay; Porous ceramic materials; Sludge; Waste
DOI
10.3989/cyv.112013
Hyperlink
http://boletines.secv.es/upload/20130512145340.20135288.pdf

Rozenštrauha, I., Sosins, G., Krāģe, L., Sedmale, G., Vaiciukyniene, D. Elaboration of New Ceramic Composites Containing Glass Fibre Production Wastes. Boletin de la Sociedad Espanola de Ceramics y Vidrio, 2013, Vol.52, Iss.2, pp.88-92. ISSN 0366-3175. e-ISSN 2173-0431. Available from: doi:10.3989/cyv.112013

Publication language
English (en)
The Scientific Library of the Riga Technical University.
E-mail: uzzinas@rtu.lv; Phone: +371 28399196