Effect of sintering temperature on the microstructure and properties of foamed glass-ceramics prepared from high-titanium blast furnace slag and waste glass

Chang-hong Chen; Ke-qin Feng; Yu Zhou; Hong-ling Zhou

doi:10.1007/s12613-017-1480-8

Volume 24 Issue 8

Aug. 2017

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Article Navigation > International Journal of Minerals, Metallurgy and Materials > 2017 > 24(8): 931-936

Chang-hong Chen, Ke-qin Feng, Yu Zhou, and Hong-ling Zhou, Effect of sintering temperature on the microstructure and properties of foamed glass-ceramics prepared from high-titanium blast furnace slag and waste glass, Int. J. Miner. Metall. Mater., 24(2017), No. 8, pp. 931-936. https://doi.org/10.1007/s12613-017-1480-8

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Chang-hong Chen, Ke-qin Feng, Yu Zhou, and Hong-ling Zhou, Effect of sintering temperature on the microstructure and properties of foamed glass-ceramics prepared from high-titanium blast furnace slag and waste glass, Int. J. Miner. Metall. Mater., 24(2017), No. 8, pp. 931-936. https://doi.org/10.1007/s12613-017-1480-8

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Research Article

Effect of sintering temperature on the microstructure and properties of foamed glass-ceramics prepared from high-titanium blast furnace slag and waste glass

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Corresponding author:
Ke-qin Feng E-mail: kqfeng@scu.edu.cn
Received: 15 November 2016; Revised: 12 March 2017; Accepted: 14 March 2017

Abstract

Abstract

Foamed glass-ceramics were prepared via a single-step sintering method using high-titanium blast furnace slag and waste glass as the main raw materials The influence of sintering temperature (900-1060℃) on the microstructure and properties of foamed glass-ceramics was studied. The results show that the crystal shape changed from grainy to rod-shaped and finally turned to multiple shapes as the sintering temperature was increased from 900 to 1060℃. With increasing sintering temperature, the average pore size of the foamed glass-ceramics increased and subsequently decreased. By contrast, the compressive strength and the bulk density decreased and subsequently increased. An excessively high temperature, however, induced the coalescence of pores and decreased the compressive strength. The optimal properties, including the highest compressive strength (16.64 MPa) among the investigated samples and a relatively low bulk density (0.83 g/cm³), were attained in the case of the foamed glass-ceramics sintered at 1000℃.
- foamed glass-ceramics;
- sintering temperature;
- blast furnace slag;
- waste glass;
- crystallization

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