利用废旧线路板回收金属富集体再造超细铜粉  

Recovery of ultrafine copper powders from metal components of waste printed circuit boards

作　　者：吴玉锋[1] 王维[1] 李瑞卿[2] 章启军[1] 

机构地区：[1]北京工业大学循环经济研究院,北京100124 [2]北京工业大学材料科学与工程学院,北京100124

出　　处：《环境工程学报》2013年第6期2344-2348,共5页Chinese Journal of Environmental Engineering

基　　金：北京市重点学科"资源;环境及循环经济"项目(033000541212002);北京市属高等学校人才强教深化计划-中青年骨干人才教师(PHR20110843);北京市属科研基地建设-科技创新平台(033000546613001)

摘　　要：实验以氨性溶液溶浸废线路板中回收的金属富集体产出高浓度含铜浸出液作为电解原液,采用电沉积法循环再造超细铜粉。主要考察了电沉积过程中硫酸浓度、电流密度、电沉积时间和电沉积温度等条件对超细铜粉回收率的影响。实验结果表明,在硫酸浓度为12 g/L,电流密度为4 A/dm2,电沉积时间3 h,溶液温度为40℃的条件下,电沉积超细铜粉的回收率超过97%,所得铜粉的树枝状形貌完整,纯度高,粒径小,约为3～6μm。The ultrafine copper powders were produced by the ammonia leaching and electrodepositing method from waste printed circuit boards. The effects of electrodepositing parameters such as sulfuric acid con- centration, current density, electrodepositing time and temperature of solution on the copper recovery were stud- ied respectively. The results showed that the ultrafine copper powders with high purity and dendrite shape was successfully obtained under the sulfuric acid concentration of 12 g/L, current density of 4 A/dm2＇ electrodepos- iting time of 3 h and temperature of solution of40~C. The size of the copper powder was between 3 and 6 μm,and the copper recovery was over 97%.

关 键 词：废线路板 电沉积 超细铜粉 

分 类 号：X705[环境科学与工程—环境工程]