Lead recovery from scrap cathode ray tube funnel glass by hydrothermal sulphidisation

被引：12

作者：

Yuan, Wenyi ^{[1
]}

Meng, Wen ^{[1
]}

Li, Jinhui ^{[2
]}

Zhang, Chenglong ^{[1
]}

Song, Qingbin ^{[2
]}

Bai, Jianfeng ^{[1
]}

Wang, Jingwei ^{[1
]}

Li, Yingshun ^{[3
]}

机构：

[1] Shanghai Second Polytech Univ, Shanghai Cooperat Ctr WEEE Recycling, Shanghai, Peoples R China

[2] Tsinghua Univ, Sch Environm, Beijing 100084, Peoples R China

[3] Shanghai Xin Jinqiao Environm Protect Co, Shanghai, Peoples R China

来源：

WASTE MANAGEMENT & RESEARCH | 2015年 / 33卷 / 10期

基金：

中国国家自然科学基金;

关键词：

E-waste; cathode ray tube funnel glass; hydrothermal sulphidisation; recycling; UTILIZING SUBCRITICAL WATER; LIFE-SPAN; DISPOSAL; SULFIDATION; EXTRACTION; MANAGEMENT;

D O I：

10.1177/0734242X15597777

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

This research focused on the application of the hydrothermal sulphidisation method to separate lead from scrap cathode ray tube funnel glass. Prior to hydrothermal treatment, the cathode ray tube funnel glass was pretreated by mechanical activation. Under hydrothermal conditions, hydroxyl ions (OH-) were generated through an ion exchange reaction between metal ions in mechanically activated funnel glass and water, to accelerate sulphur disproportionation; no additional alkaline compound was needed. Lead contained in funnel glass was converted to lead sulphide with high efficiency. Temperature had a significant effect on the sulphidisation rate of lead in funnel glass, which increased from 25% to 90% as the temperature increased from 100 degrees C to 300 degrees C. A sulphidisation rate of 100% was achieved at a duration of 8h at 300 degrees C. This process of mechanical activation and hydrothermal sulphidisation is efficient and promising for the treatment of leaded glass.

引用

页码：930 / 936

页数：7

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