Conversion of blast furnace slag into new glass-ceramic material

Francis, A. A.

doi:10.1016/j.jeurceramsoc.2003.08.019

Cited by 108 publications

(48 citation statements)

References 8 publications

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“…Recent work on slag glass-ceramics using the single-stage heat-treatment method was reported by Francis [83]. The heat-treatment temperature range of 900-1100°C was derived from DTA data, which showed a well-defined exothermic peak at about 1010°C and another less welldefined at temperatures just around 900°C.…”

Section: Melting and Subsequent Heat-treatment -Modified One-stage Mementioning

confidence: 99%

Glass-ceramics: Their production from wastes—A Review

2006

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Glass-ceramics are polycrystalline materials of fine microstructure that are produced by the controlled crystallisation (devitrification) of a glass. Numerous silicate based wastes, such as coal combustion ash, slag from steel production, fly ash and filter dusts from waste incinerators, mud from metal hydrometallurgy, different types of sludge as well as glass cullet or mixtures of them have been considered for the production of glass-ceramics. Developments of glassceramics from waste using different processing methods are described comprehensively in this review, covering R&D work carried out worldwide in the last 40 years. Properties and applications of the different glass-ceramics produced are discussed. The review reveals that considerable knowledge and expertise has been accumulated on the process of transformation of silicate waste into useful glass-ceramic products. These glass-ceramics are attractive as building materials for usage as construction and architectural components or for other specialised technical applications requiring a combination of suitable thermo-mechanical properties.

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Section: Melting and Subsequent Heat-treatment -Modified One-stage Mementioning

confidence: 99%

Glass-ceramics: Their production from wastes—A Review

2006

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“…A slope change at ~720 °C was observed, and it could indicate a glass transition temperature, T g , according to Francis 6 . A broad exothermic peak was also detected at ~910 °C, and its position would presumably correspond to crystal phase separation.…”

Section: As-quenched Glass Samplesmentioning

confidence: 99%

“…The research activities and efforts carried out by several authors in treating industrial wastes, i.e. goethite, wastes resulted from the hydrometallurgy of zinc, fly ash from domiciliary, incinerators wastes, coal fly ash, and blast furnace slags, demonstrate the wide possibility of using such wastes to resolve environmental problems and contribute to the efforts for waste regulations and pollution prevention 6 . The production of glass-ceramic materials based on inorganic industrial solid wastes is a promising line of recycling and beneficiation of by-products and waste materials, and has been used very successfully to crystallize important ceramics from the glass phase.…”

Section: Literature Reviewmentioning

confidence: 99%

Conversion of sandy tailing from banded iron formation exploitation into glass-ceramic materials

2011

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Glass-ceramic materials made of 40.0 wt. (%) of sandy tailing from banded iron formation exploitation and 60 wt. (%) of slag from steelwork were analyzed. Vitrification was obtained by heating the batch samples up to 1400 °C for 1 hour and quenching the melt on a stainless steel plate. Devitrification was obtained by heat-treating the as-quenched glass samples in isothermal conditions at 750 and 1000 °C for 2 hours. FTIR spectroscopy analysis on the devitrified samples indicates a peak shift towards higher wave number with respect to the as-quenched glass because of the crystallization. XRD analysis revealed the presence of crystalline diopside CaMgSi 2 O 6 as the major phase in the glass samples isothermally heat-treated at 1000 °C. Results also indicated that the devitrification at 1000 °C and an incipient devitrification at 750 °C resulted into harder glass-ceramic materials.

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“…In fact, in the last few decades considerable attention has been paid to utilizing BF slag as a raw material for glass-ceramics [3][4][5]. However, the usual raw material for fabricating BF glassceramics is not molten BF slag, but water-granulated slag, which leads to an enormous waste of heat [6].…”

Section: Introductionmentioning

confidence: 99%