废弃含汞灯具中荧光粉分析及汞处理 |
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引用本文: | 高敏,王斌,苑文仪,宋广翰,朱学峰,王景伟,白建峰,张承龙. 废弃含汞灯具中荧光粉分析及汞处理[J]. 安全与环境工程, 2016, 0(5). DOI: 10.13578/j.cnki.issn.1671-1556.2016.05.013 |
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作者姓名: | 高敏 王斌 苑文仪 宋广翰 朱学峰 王景伟 白建峰 张承龙 |
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作者单位: | 1. 上海第二工业大学环境与材料工程学院,上海,201209;2. 上海第二工业大学电子废弃物资源化协同创新中心,上海,201209 |
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基金项目: | 上海市联盟计划项目(LM201508);巴塞尔公约亚太区域中心发展基金项目(2014KM01-03);上海第二工业大学研究生基金项目(A30NH1513012);上海第二工业大学学科建设项目(XXKZD1602) |
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摘 要: | 废旧直管型荧光灯、节能灯及高压汞灯等照明灯具所用荧光粉中含有重金属汞,由此带来的汞污染已危及人体健康与生态安全。分析了废弃含汞灯具中荧光粉混合物的粒径分布以及不同粒径筛分物中塑料的组分含量和汞含量,并研究了不同加热时间、加热温度对汞蒸馏效果的影响。结果表明:含汞荧光粉原料中塑料含量占1.00%,粒径大于150μm的玻璃颗粒占72.00%以上,其汞含量仅为9 mg/kg;在恒定氮气量为2L/min的条件下,利用管式炉在700℃的温度下加热240min,汞的蒸馏效果最佳,汞蒸馏效率为61.11%~95.26%。
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关 键 词: | 废弃含汞灯具 荧光粉 粒径分布 金属汞 蒸馏 |
Analysis of Phosphor Powder and Removal of Mercury from Waste Mercury-containing Lamps |
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Abstract: | The waste tubular fluorescent lamps,energy saving lamps and high-pressure mercury lamps usu-ally use phosphor powder added with mercury,and the mercury pollution hence caused has being endange-ring human health and ecological safety.This paper not only focuses on particle size distribution,mercury and plastics content in phosphor powder samples with different sizes,but analyzes how the heating temper-ature and time effect the mercury distillation.The results indicate that the content of plastics accounts for 1.00%,glass particles with the size greater than 150μm,above 72.00%,and mercury content is only 9 mg/kg.The optimum conditions for mercury distillation with tube type furnace is constant nitrogen gas flow 2 . 0 L/min,heating temperature 700℃,reaction time 240 min.With this condition,the mercury distillation ef-ficiency reaches 6 1 .1 1%~9 5 .2 6%. |
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Keywords: | waste mercury-containing lamp phosphor powder size distribution mercury distillation |
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