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Application of an Industrial Waste Glass in “Glass–Ceramic Stoneware”
Author(s) -
Bernardo Enrico,
Dattoli Andrea,
Bonomo Emanuele,
Esposito Leonardo,
Rambaldi Elisa,
Tucci Antonella
Publication year - 2011
Publication title -
international journal of applied ceramic technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.4
H-Index - 57
eISSN - 1744-7402
pISSN - 1546-542X
DOI - 10.1111/j.1744-7402.2010.02550.x
Subject(s) - materials science , vitrification , glass recycling , sintering , crystallization , soda lime glass , ceramic , glass ceramic , fly ash , soda lime , composite material , incineration , tile , feldspar , raw material , metallurgy , waste management , quartz , chemical engineering , medicine , engineering , andrology , chemistry , organic chemistry
Vitrified inorganic wastes are often converted into glass–ceramics; although these products exhibit interesting properties, the processing is quite complex and expensive. This paper reports an alternative approach, based on substituting traditional feldspar fluxes in stoneware with a CaO–Al 2 O 3 –SiO 2 glass, from industrial plasma vitrification of municipal solid waste incinerator fly ashes. The new materials feature low sintering temperatures, <1000°C, associated to a substantial crystallization. For an optimized balance between crystallization and densification (by introducing soda‐lime glass as a sintering promoter), the products exhibit remarkable mechanical properties (e.g., bending strength exceeding 100 MPa), even superior to those of traditional porcelain stoneware.