Transactions of the INDIAN CERAMIC SOCIETY Vol. 69 2010
Production and Characterization of Glasses and
Glass-Ceramics from Egyptian Iron Slag Waste
Fatma H. ElBatal*, Moenis A. Azooz, Yousry M. Hamdy** and Fathy M. Ezz ElDin***
Pages: 29-36
DOI : 10.1080/0371750X.2010.11090818
Abstract
Trials were made for reprocessing Egyptian blast furnace slag with and without additives or commercial
batches to produce glasses. X-ray diffraction studies were done to identify the crystallization phases separated
by two steps regime for controlled crystallization. The corrosion behaviours of the prepared glasses and
corresponding glass-ceramics by different leaching solutions were done at both room temperature for 1 and
2 months and at 95 o C for 1 h through the grain method. A further corrosion test inside a gamma-irradiation
chamber was carried out for both the reference vitrified slag and the highly promising glass and glass-ceramic
samples under direct gamma irradiation facility. Infrared absorption spectra of the prepared samples
were measured to identify their structural building units. Scanning electron microscope was used to study
the morphology of the prepared samples after corrosion and irradiation. X-ray diffraction studies indicate
the separation of gehlenite and akermanite as major phases in the base slag. On adding additives, wollastonite
and diopside were separated as main phases. Infrared spectral data confirm these findings. Corrosion studies
indicate that the prepared sample containing equal portion of slag and sodium borosilicate batch is the
highest durable glass together with its glass-ceramic derivative and the same stability retains under direct
exposure to gamma irradiation.
