Evaluation of borax solid wastes in production of frits suitable for fast single-fired wall tile opaque glass-ceramic glazes

Zircon (zirconium silicate, ZrSiO 4 ) is the main opacifier of glossy, opaque, white-coloured, frit-based wall tile glazes. However, zirconia containing frits employed in the preparation of these glazes raise the production cost limiting zircon usage as a raw material at an industrial scale. Therefo...

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Bibliographic Details
Published in:Bulletin of materials science 2010-04, Vol.33 (2), p.135-144
Main Authors: Pekkan, K., Karasu, B.
Format: Article
Language:English
Subjects:
Borax
Boron oxides
Chemistry and Materials Science
Engineering
Frit
Glass ceramics
Glazes
Industrial applications
Materials Science
Production costs
Raw materials
Solid wastes
Surface properties
Tile (material)
Walls
Wastes
Zircon
Zirconium dioxide
Zirconium silicate
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Summary:Zircon (zirconium silicate, ZrSiO 4 ) is the main opacifier of glossy, opaque, white-coloured, frit-based wall tile glazes. However, zirconia containing frits employed in the preparation of these glazes raise the production cost limiting zircon usage as a raw material at an industrial scale. Therefore, there have been several searches on seeking for alternative frit compositions with lower or without zirconia content. Consequently, positive outcomes were recently reported. With the present study, 1·5–5% of borax concentrator waste replaced certain level of acid boric for B 2 O 3 content in a low zircon containing frit recipe. It is confirmed that waste contribution did not distort the surface properties of the fast single-fired wall tile opaque glazes. Zircon was found to be the main crystal phase of the glazes in laboratory trials. Industrial applications revealed that shorter firing cycles lead to zircon and petedunnite (CaZnSi 2 O 6 ) formation in the CW-4 glaze.
ISSN:0250-4707
0973-7669
DOI:10.1007/s12034-010-0019-7