Glass-ceramics produced by vitrification of coal fly ash
Journal
Quality of life
Date Issued
2021
Author(s)
Biljana Angjusheva, Emilija Fidancevska
DOI
10.7251/QOL2103085A
Abstract
Glass-ceramics based on CAS (CaO-Al2O3-SiO2) system was produced by controlled crystallization
of vitrifi ed fl y ash. Fly ash was pre-treated by magnetic separation and nonmagnetic part of fl y ash (NFA) was used.
Maximal crystallization of parent glass occurs in the temperature region from 900 oC to 1160 oC. Glass-ceramics was produced by consolidation of parent glass i.e. pressing (45 MPa) and sintering at 950, 1000, 1050 and 1100 oC, and aluminum silicate (anorthite). The obtained glass-ceramics could be potentially used in construction applications.
of vitrifi ed fl y ash. Fly ash was pre-treated by magnetic separation and nonmagnetic part of fl y ash (NFA) was used.
Maximal crystallization of parent glass occurs in the temperature region from 900 oC to 1160 oC. Glass-ceramics was produced by consolidation of parent glass i.e. pressing (45 MPa) and sintering at 950, 1000, 1050 and 1100 oC, and aluminum silicate (anorthite). The obtained glass-ceramics could be potentially used in construction applications.
Subjects
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