Abstract:Evaluating the environmental impact of different cathode ray tube (CRT) leaded glass parts and its slag after lead extraction by smelting was helpful for the recycling and disposal of CRT glass. This study investigated the Pb leaching characteristics of different leaded CRT glass parts and its slag after lead extraction by HJ/T300-2007. The results showed lead leaching concentrations of funnel, panel, and frit glass all exceeded the threshold of leaching concentration for hazardous waste, and lead in frit glass was very easy to leach, contributing most to CRT toxicity; lead in slag was also very easy to leach, and leaded slag could be regarded as general solid waste only if its lead concentration was below 1.5%. Except for the Pb content in the material, Pb structure contributed a lot to the difference of Pb leaching.
谢芳芳, 欧志远, 李金惠, 刘丽丽. CRT含铅玻璃及其冶炼废渣的铅浸出毒性研究[J]. 中国环境科学, 2014, 34(12): 3237-3241.
XIE Fang-Fang, 欧Zhi-Yuan , LI Jin-Hui, LIU Li-Li. Lead leaching characteristics of CRT leaded glass and its slag after lead extraction by smelting. CHINA ENVIRONMENTAL SCIENCECE, 2014, 34(12): 3237-3241.