熔制保温时间对CAMS系矿渣微晶玻璃结构与性能的影响<sup>*</sup>

doi:10.11896/j.issn.1005-023X.2017.018.025

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Abstract Quaternary CaO-Al₂O₃-MgO-SiO₂ (CAMS) glass ceramics were synthesized mainly with Bayan Obo mine secondary tailing, blast furnace slag, and fly ash by melting method. The microstructure and properties of the glass ceramics under different glass melt holding time was systematically investigated by DSC, XRD, SEM, EDS, Raman, infrared spectral and physicochemical properties tester. The results indicated that the content of CaF₂ increased and the amount of Al₂O₃ decreased as the increasing hol-ding time. Due to the change of the composition of samples, the dominant crystalline phase was diopside and the crystallization temperature of the basic glass first increased and then decreased. Meanwhile the second phase (identified as fluorite) would disappear gradually and the grain of the glass-ceramics first refined and then coarsened with the increase of glass melt holding time. Based on above-mentioned reasons, the structure and performance of the glass ceramics had changed. The glass-ceramics with glass melt hol-ding time of 5 h showed the optimal properties, of which the density, three-point bending strength and the resistance to acid or alkali corrosion are 3.09 g/cm³, 201 MPa, 7 021 MPa, 97.78% and 98.83%, respectively.

Key words： glass melted holding time slag glass-ceramics Bayan Obo mine tailing alumina crucible

Published: 08 May 2018

CLC number:

TQ171

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	Articles by authors
	DENG Leibo
	ZHANG Xuefeng
	ZHANG Mingxing
	OUYANG Shunli
	YIN Zheyi

Cite this article:

DENG Leibo,ZHANG Xuefeng,ZHANG Mingxing, et al. Influence of Melt Holding Time on the Microstructure and Properties of CAMS Slag Glass-ceramics[J]. Materials Reports, 2017, 31(18): 125-130.

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http://www.mater-rep.com/EN/10.11896/j.issn.1005-023X.2017.018.025 OR http://www.mater-rep.com/EN/Y2017/V31/I18/125

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