Volume 4 Issue 5
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Karamberi, A., & Moutsatsou, A. (2006). Vitrification of lignite fly ash and metal slags for the production of glass and glass ceramics. China Particuology, 4(5), 250–253. https://doi.org/10.1016/S1672-2515(07)60269-3
Vitrification of lignite fly ash and metal slags for the production of glass and glass ceramics
A. Karamberi a *, A. Moutsatsou a
a Laboratory of Inorganic and Analytical Chemistry, Chemical Engineering Department, National Technical University of Athens, 9 Heroon Polytechniou Str., 157 73 Athens, Greece
10.1016/S1672-2515(07)60269-3
Volume 4, Issue 5, October 2006, Pages 250-253
Received 21 December 2005, Accepted 1 August 2006, Available online 27 November 2007.
E-mail: aekara@central.ntua.gr

Highlights
Abstract

This work focuses on the production of glass and glass-ceramics by using industrial wastes or by-products, e.g., two fly ashes from the combustion of lignite, a slag from the production of Fe-Ni and a slag from the making of steel. Vitrification took place at 1 350°–1 450°C and crystallization was achieved by heat treatment at 900, 950 and 1 000°C. The capability of the waste to be vitrified and subsequently devitrified was determined by XRD techniques. The crystalline phase depends greatly on the structure of the by-product and the heat treatment. The final products showed low leachability and good hardness.

Graphical abstract
Keywords
fly ash; slag; vitrification; de-vitrification; glass-ceramics