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投稿时间:2019-05-24 修订日期:2019-05-27
投稿时间:2019-05-24 修订日期:2019-05-27
中文摘要: 采用水浸出废旧线路板熔炼烟灰硫酸化焙烧渣,考察浸出温度、搅拌速率、浸出时间和液固比对铜、锌浸出率及铅富集效果的影响。研究表明,较低温度下铜、锌浸出率均可达到99%以上,而铅也能大部分富集在浸出渣中;搅拌速率、浸出时间和液固比对铜、锌浸出率影响较大,对铅浸出率的影响较小。最佳浸出条件为:浸出温度40 ℃、搅拌速率175 r/min,浸出时间1 h、液固比5︰1。在此条件下,铜、锌的浸出率分别达到99.49%和99.58%,浸出渣中铅含量达到50%左右。
Abstract:Process of sulfation roasting product from waste printed circuit boards smelting ash was studied. Effects of leaching temperature, stirring speed, leaching time and L/S on leaching rate of copper, zinc and lead were investigated. The results show that leaching rate of copper and zinc is 99% above at room temperature, and lead can be mostly enriched in leaching residue. Stirring speed, leaching time and L/S exert big influence on leaching rate of copper and zinc, while weak influence on lead leaching rate. Leaching rate of copper and zinc is 99.49% and 99.58%, respectively, and lead content in leaching residue is about 50% under the optimum conditions including leaching temperature of 40 ℃, stirring speed of 175 r/min, leaching time of 1 h, and L/S of 5︰1.
keywords: waste printed circuit boards smelting ash sulfation roasting product water leaching copper zinc lead separation
文章编号: 中图分类号: 文献标志码:
基金项目:国家重点研发计划(2017YFC0703206-03,2018YFC1903104);广东省科技计划项目(2017B020238001)
作者 | 单位 | |
刘功起 | 北京工业大学材料科学与工程学院 | lgqcz@emails.bjut.edu.cn |
潘德安 | 北京工业大学材料科学与工程学院 | |
李彬* | 北京工业大学材料科学与工程学院 | thlibin@ sina.com |
吴玉锋 | 北京工业大学材料科学与工程学院 | |
杨飞华 | 北京建筑材料科学研究总院固废资源化利用与节能建材国家重点实验室 | |
成娜 | 沈阳中科生态环评有限公司 |
引用文本:
刘功起,潘德安,李彬,吴玉锋,杨飞华,成娜.水浸法回收线路板熔炼烟灰焙烧砂有价元素的试验[J].有色金属(冶炼部分),2019(9):58-60.
LIU Gongqi,PAN De’an,LI Bin,WU Yufeng,YANG Feihua,CHENG Na.Experiment of Recovery of Valuable Elements from Waste Printed Circuit Boards Smelting Ash by Water Leaching[J].Nonferrous Metals (Extractive Metallurgy),2019(9):58-60.
刘功起,潘德安,李彬,吴玉锋,杨飞华,成娜.水浸法回收线路板熔炼烟灰焙烧砂有价元素的试验[J].有色金属(冶炼部分),2019(9):58-60.
LIU Gongqi,PAN De’an,LI Bin,WU Yufeng,YANG Feihua,CHENG Na.Experiment of Recovery of Valuable Elements from Waste Printed Circuit Boards Smelting Ash by Water Leaching[J].Nonferrous Metals (Extractive Metallurgy),2019(9):58-60.