| 阴极射线管锥玻璃碳热还原强化酸浸脱铅 |
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| 引用本文： | 邢明飞, 王雅萍, 杨英, 黄兴宇, 李成杰, 洪海洋. 阴极射线管锥玻璃碳热还原强化酸浸脱铅[J]. 环境工程学报, 2016, 10(12): 7271-7276. doi: 10.12030/j.cjee.201507081 |
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| 作者姓名： | 邢明飞 王雅萍 杨英 黄兴宇 李成杰 洪海洋 |
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| 作者单位： | 1. 河南理工大学河南省高校矿山环境保护与生态修复省级重点实验室培育基地, 焦作 454000; 2. 河南理工大学资源与环境学院, 焦作 454000; 3. 河南理工大学测绘与国土信息工程学院, 焦作 454000 |
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| 基金项目： | 河南省高校矿山环境保护与生态修复省级重点实验室培育基地开放基金资助（KF2014-02） 河南省教育厅科学技术研究重点项目基础研究（13140055） 河南理工大学博士基金（B2014-073） |
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| 摘 要： | 通过碳热还原强化酸浸的方法高效去除CRT锥玻璃中的重金属铅，同时将脱铅残渣转变为玻璃微珠产品。实验考察了还原温度、碳粉加入量和保温时间对锥玻璃中铅浸出效果的影响。研究结果表明，经碳热还原预处理后锥玻璃中的氧化铅转变为单质铅并主要富集在玻璃微珠表面，通过酸浸处理可高效回收锥玻璃中的铅。当锥玻璃与10%碳粉混合均匀，在1 200℃条件下处理30 min，锥玻璃中铅的浸出效率可达94.80%，脱铅残渣为粒径范围1~15 μm的玻璃微珠。
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| 关 键 词： | 电子废弃物 重金属 碳热还原 酸浸 含铅玻璃 |
| 收稿时间： | 2015-10-06 |
Lead recovery from CRT funnel glass through carbon thermal reduction enhanced acid leaching process |
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| XING Mingfei, WANG Yaping, YANG Ying, HUANG Xingyu, LI Chengjie, HONG Haiyang. Lead recovery from CRT funnel glass through carbon thermal reduction enhanced acid leaching process[J]. Chinese Journal of Environmental Engineering, 2016, 10(12): 7271-7276. doi: 10.12030/j.cjee.201507081 |
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| Authors: | XING Mingfei WANG Yaping YANG Ying HUANG Xingyu LI Chengjie HONG Haiyang |
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| Affiliation: | 1. Henan Key Laboratory Cultivation Base of Mine Environmental Protection and Ecological Remediation, Henan Polytechnic University, Jiaozuo 454000, China; 2. Institute of Resource and Environment, Henan Polytechnic University, Jiaozuo 454000, China; 3. School of Surveying and Land Information Engineering, Henan Polytechnic University, Jiaozuo 454000, China |
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| Abstract: | In this paper, PbO in funnel glass was efficiently removed by acid leaching enhanced by carbon thermal reduction and the residue was prepared into glass microspheres synchronously. The influencing factors included the reduction temperature, amount of carbon added, and the holding time. The results indicated that PbO in the funnel glass can be quickly reduced to metallic Pb and were mainly located on the surface of the glass microspheres. Therefore, the generated Pb can be efficiently removed by acid leaching. The leaching rate of Pb was 94.80% when the temperature, added carbon amount, and holding time were fixed at 1 200℃, 10% and 30 min, respectively. Spherical glass microspheres of 1 to 15 μm were obtained after the acid leaching treatment. |
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| Keywords: | waste electrical and electronic equipments heavy metals carbon thermal reduction acid leaching lead glass |
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