浮选处理<0.25mm粒级废弃印刷电路板的试验研究  

Experimental study on the flotation of <0.25 mm waste printed circuit boards particle

作　　者：谭之海[1,2,3] 伍玲玲[1,2] 段晨龙[1,2] 

机构地区：[1]中国矿业大学化工学院,江苏徐州221116 [2]煤炭加工与高效洁净利用教育部重点实验室,江苏徐州221008 [3]清华大学固体废物处理与环境安全教育部重点实验室,北京100084

出　　处：《环境污染与防治》2011年第11期20-23,共4页Environmental Pollution & Control

基　　金：国家自然科学基金资助项目(No.51074156);国家自然科学基金创新研究群体项目(No.50921002);中国博士后科学基金特别资助项目(No.201003607);中国博士后科学基金资助项目(No.20090461153);高等学校博士学科点新教师基金资助项目(No.2010095120003);固体废物处理与环境安全教育部重点实验室开放基金资助项目(No.SWMES-2010-08)

摘　　要：从废弃印刷电路板微细颗粒中富集有用金属是目前环境污染防治领域中的前沿课题,采用浮选方法对废弃印刷电路板破碎后的微细物料进行探索性浮选试验研究。借助Design-Expert7.0软件进行了废弃印刷电路板金属回收的4因素3水平浮选试验设计和结果分析,讨论了搅拌速度、充气量、矿浆温度及矿浆质量浓度对浮选效果的影响,给出了金属回收率的残差分布曲线以及金属回收率与各影响因素之间的定量关系模型,并利用Design-Expert7.0软件对浮选试验条件进行了优化,获得了金属回收率为96.89%时的操作指标。The enrichment of useful metal from waste printed circuit boards was an advanced topic in the research domain of environment pollution and control. The flotation of micro-sized waste printed circuit board particle was performed to investigate the effect of stirring rate, aeration rate, slurry concentration and slurry temperature on metal recovery. Design-Expert7. 0 experiment software was employed to design the flotation experiment and analyze the results. The residual error distribution diagram of metal recovery and the quantitative relationship between influence factors and metal recovery rate was obtained. The operating condition was optimized by Design-Expert7.0, and the maximum recovery rate of 96.89% was achieved under the optimum condition.

关 键 词：废弃印刷电路板 浮选 回收率 Design-Expert 

分 类 号：TN41[电子电信—微电子学与固体电子学]