Lead recovery and high silica glass powder synthesis from waste CRT funnel glasses through carbon thermal reduction enhanced glass phase separation process

CORC > 生态环境研究中心 > 中国科学院生态环境研究中心 > 固体废弃物处理与资源化实验室

	Lead recovery and high silica glass powder synthesis from waste CRT funnel glasses through carbon thermal reduction enhanced glass phase separation process
	Wang, Yaping; Zhang, Zhiyuan; Fu, Zegang; Xing, Mingfei; Wang, Jingyu
刊名	JOURNAL OF HAZARDOUS MATERIALS
	2017-01-15
卷号	322 期号:0 页码:479-487
关键词	Hazardous Waste Crt Funnel Glass Carbon-thermal Reduction Glass Phase Separation Lead Recovery
英文摘要	In this study, a novel process for the removal of toxic lead from the CRT funnel glass and synchronous preparation of high silica glass powder was developed by a carbon-thermal reduction enhanced glass phase separation process. CRT funnel glass was remelted with B2O3 in reducing atmosphere. In the thermal process, a part of PbO contained in the funnel glass was reduced into metallic Pb and detached from the glass phase. The rest of PbO and other metal oxides (including Na2O, K2O, Al2O3, BaO and CaO) were mainly concentrated in the boric oxide phase. The metallic Pb phase and boric oxide phase were completely leached out by 5 mol/L HNO3. The lead removal rate was 99.80% and high silica glass powder (SiO2 purity >95 wt%) was obtained by setting the temperature, B2O3 added amount and holding time at 1000 degrees C, 20% and 30 mins, respectively. The prepared high silicate glass powders can be used as catalyst carrier, semipermeable membranes, adsorbents or be remelted into high silicate glass as an ideal substitute for quartz glass. Thus this study proposed an eco-friendly and economical process for recycling Pb-rich electronic glass waste. (C) 2016 Elsevier B.V. All rights reserved.
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/39225]
专题	生态环境研究中心_固体废弃物处理与资源化实验室
推荐引用方式 GB/T 7714	Wang, Yaping,Zhang, Zhiyuan,Fu, Zegang,et al. Lead recovery and high silica glass powder synthesis from waste CRT funnel glasses through carbon thermal reduction enhanced glass phase separation process[J]. JOURNAL OF HAZARDOUS MATERIALS,2017,322(0):479-487.
APA	Wang, Yaping,Zhang, Zhiyuan,Fu, Zegang,Xing, Mingfei,&Wang, Jingyu.(2017).Lead recovery and high silica glass powder synthesis from waste CRT funnel glasses through carbon thermal reduction enhanced glass phase separation process.JOURNAL OF HAZARDOUS MATERIALS,322(0),479-487.
MLA	Wang, Yaping,et al."Lead recovery and high silica glass powder synthesis from waste CRT funnel glasses through carbon thermal reduction enhanced glass phase separation process".JOURNAL OF HAZARDOUS MATERIALS 322.0(2017):479-487.