Waste Colored Glasses as Sintering Aid in Ceramic Tiles Production ()
Abstract
Bentonite, kaolin and Montmorillonite were mixed with 0%, 2%, 5% and 10% by weight
additions of mixed color post consumer glass to determine their softening points. And
then to determine the effects of glass addition on clay firing, Acustar tinted tempered,
Acustar GL-20 and post consumer mixed were used. Six glass samples were produced;
150 micron and 5 micron tinted tempered, 150 micron and 5 micron GL-20 and 150
micron and 5 micron post consumer mix. Bentonite clay was used to mix with these
glasses at 0wt%, 2wt%, 5wt%, 10wt%, 25wt% and 50wt% and 5% water was added. The
resulting composite blends were then die pressed at 3200 psi to produce rectangular
specimens with cross sections of 1.25” x 0.5”. Each specimen weighed approximately 2.5
grams and they were fired at 800℃, 900℃, 1000℃ and 1100℃ in a lindberg box
furnace in air. The firing result showed that the addition of only a small percentage of
post consumer glass lowers the melting points of clays by 50℃to 150℃. As a result of
this the energy consumed to produce the clay products was reduced and the amount of
reduction varied from clay to clay. Different size glass particles also resulted in
considerably different effects on the clay sintering properties.
Share and Cite:
J. Hwang, X. Huang, A. Garkida and A. Hein, "Waste Colored Glasses as Sintering Aid in Ceramic Tiles Production,"
Journal of Minerals and Materials Characterization and Engineering, Vol. 5 No. 2, 2006, pp. 119-129. doi:
10.4236/jmmce.2006.52008.
Conflicts of Interest
The authors declare no conflicts of interest.
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