Sinterability, microstructure and compressive strength of porous glass ceramics from metallurgical silicon slag and waste glass

CORC > 过程工程研究所 > 中国科学院过程工程研究所 > 湿法冶金清洁生产技术国家工程实验室

	Sinterability, microstructure and compressive strength of porous glass ceramics from metallurgical silicon slag and waste glass
	Cao, Jianwei 1; Lu, Jinshan 2; Jiang, Longxiang 2; Wang, Zhi 1
刊名	CERAMICS INTERNATIONAL
	2016-06-01
卷号	42 期号:8 页码:10079-10084
关键词	Sintering Porosity Strength Glass ceramics Metallurgical silicon slag
ISSN号	0272-8842
英文摘要	Porous glass-ceramics have been prepared by the direct sintering of powder mixtures of metallurgical silicon slag and waste glass. The thermal behavior of silicon slag was examined by differential thermal analysis and thermogravimetry to clarify the foaming mechanism of porous glass-ceramics. The mass loss of silicon slag below 700 degrees C was attributed to the oxidation of amorphous carbon from residual metallurgical coke in the silicon slag, and the mass gain above 800 degrees C to the passive oxidation of silicon carbide. The porosity of sintered glass-ceramics was characterized in terms of the apparent density and pore size. By simply adjusting the content of waste glass and sintering parameters (i.e. temperature, time and heating rate), the apparent density changed from 0.4 g/cm(3) to 0.5 g/cm(3), and the pore size from 0.7 mm to 1.4 mm. In addition to the existing crystalline phases in the silicon slag, the gehlenite phase appeared in the sintered glass-ceramics. The compressive strength of porous glass-ceramics firstly increased and then decreased with the sintering temperature, reaching a maximal value of 1.8 MPa at 750 degrees C. The mechanical strength was primarily influenced by the crystallinity of glass-ceramics and the interfaces between the crystalline phases and the glassy matrix. These sintered porous glass-ceramics exhibit superior properties such as light-weight, heat-insulation and sound-absorption, and could found their potential applications in the construction decoration. (C) 2016 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
WOS标题词	Science & Technology ; Technology
类目[WOS]	Materials Science, Ceramics
研究领域[WOS]	Materials Science
关键词[WOS]	LIGHTWEIGHT PORCELAIN STONEWARE ; PARTICLE-SIZE ; OXIDATION ; CRYSTALLIZATION ; KINETICS ; ASH
收录类别	SCI
语种	英语
WOS记录号	WOS:000374811600098
内容类型	期刊论文
源URL	[http://ir.ipe.ac.cn/handle/122111/21041]
专题	过程工程研究所_湿法冶金清洁生产技术国家工程实验室
作者单位	1.Chinese Acad Sci, Inst Proc Engn, Key Lab Green Proc & Engn, Natl Engn Lab Hydromet Cleaner Prod Technol, Beijing 100190, Peoples R China 2.Nanchang Hangkong Univ, Sch Mat Sci & Engn, Nanchang 330063, Peoples R China
推荐引用方式 GB/T 7714	Cao, Jianwei,Lu, Jinshan,Jiang, Longxiang,et al. Sinterability, microstructure and compressive strength of porous glass ceramics from metallurgical silicon slag and waste glass[J]. CERAMICS INTERNATIONAL,2016,42(8):10079-10084.
APA	Cao, Jianwei,Lu, Jinshan,Jiang, Longxiang,&Wang, Zhi.(2016).Sinterability, microstructure and compressive strength of porous glass ceramics from metallurgical silicon slag and waste glass.CERAMICS INTERNATIONAL,42(8),10079-10084.
MLA	Cao, Jianwei,et al."Sinterability, microstructure and compressive strength of porous glass ceramics from metallurgical silicon slag and waste glass".CERAMICS INTERNATIONAL 42.8(2016):10079-10084.