publication . Article . 2016

EFFECT OF CaO/SiO₂ AND HEAT TREATMENT ON THE MICROSTRUCTURE OF GLASS-CERAMICS FROM BLAST FURNACE SLAG

Chunshai Xie; Yongliang Gui; Song Chunyan; Hu Binsheng;
Open Access
  • Published: 01 May 2016 Journal: Ceramics - Silikaty (issn: 0862-5468, eissn: 1804-5847, Copyright policy)
  • Publisher: Institute of Rock Structure and Mechanics, AS CR
Abstract
Glass-ceramics, with molten blast furnace (BF) slag as the major raw material, were prepared successfully by the melting method. The effect of the CaO/SiO₂ ratio in the molten BF slag and heat treatment on the viscosity and microstructure of glass-ceramics produced from BF slag were traced using the melt property tester, DSC, XRD and SEM. The results showed that increasing the CaO/SiO₂ ratio of BF slag caused a decrease not only in the viscosity of the BF slag at high temperature but also in the nucleation and crystallization temperature for the preparation of glass-ceramics. The content of akermanite-gehlenite increased as the CaO/SiO₂ ratio increased from 0.30...
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doi: 10.13168/cs.2016.0022
Subjects
free text keywords: Physical and Theoretical Chemistry, Analytical Chemistry, Materials Chemistry, General Chemical Engineering, Ceramics and Composites, Glass-ceramics, Blast furnace slag, Viscosity, Crystalline phase, Clay industries. Ceramics. Glass, TP785-869, Ground granulated blast-furnace slag, Slag (welding), Materials science, Ceramic, visual_art.visual_art_medium, visual_art, Metallurgy, Microstructure
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