Characterization Of Glass And Glass-ceramics
Obtained From Industrial By-products
Author(s)
A. Karamberi & A. Moutsatsou
Abstract
In the current study the utilization of industrial by-products for the production of
glass and glass-ceramics was examined. Three industrial wastes were selected
due to their mass production: fly ash derived from the combustion of lignite,
blast furnace slag from the production of Fe-Ni and blast furnace slag from the
production of steel. The capability of the above materials to be vitrified and
subsequently devitrified was investigated. Mixtures were obtained using the fly
ash, slag, glass cullet, quartz and melting agents at the appropriate proportions
and the vitrification process, which took place at 1350-1450oC, was followed.
o
chemical durability and the stability of the raw materials as well as of the final
products were determined using standard procedures. X-ray and Scanning
Electron Microscopy techniques were employed to identify the microstructure of
the stabilized products before and after the heat treatment. The glasses obtained
displayed good durability and negligible leachability. Furthermore, the results
showed that the crystalline phase is greatly dependent on the structure of the byproduct
and the heat treatment.
Keywords: industrial waste, vitrification, de-vitrification, glass, glass-ceramics,
fly ash, blast furnace slag.
1 Introduction
The use of waste materials as a partial or total replacement of virgin raw
materials for the production of construction or other purposes has become a vital
part of the waste management in developed countries. Great amounts of solid
Crystallization was achieved by heat treatment at 900, 950 and 1000 C. The
Keywords
industrial waste, vitrification, de-vitrification, glass, glass-ceramics,
fly ash, blast furnace slag.
Related Book
Other papers in this volume
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