摘要
针对三种废电路板母板粉碎料(边框料、锡板、覆铜板)进行了热分解研究,确定了其整个热解过程的失重机制。结果表明,边框料、锡板、覆铜板的热解均分为三个阶段:热解失重前段、热解失重阶段、热解失重后段。锡板和覆铜板有机组分接近,在~300℃开始失重,在~400℃最快失重阶段完成,失重为热解失重,活化能分别为23.30和12.46kJ/mol;边框料由两种或两种以上性质不同的树脂组成,在305℃才开始失重,有两个最快失重阶段,305~325℃和325~385℃,热解失重活化能为25.92kJ/mol。经450℃热解后,三种物料热解产物中Cu富集增加8个百分点左右。得到了废电路板母板粉碎料在不同热解反应阶段下的反应动力学方程。
Thermal decomposition of three kinds of waste circuit board crushing materials,i.e.,frame material,tin plate,and copper clad laminate,was carried out and weightlessness mechanism of entire pyrolysis process was determined.The results show that pyrolysis of frame material,tin plate,and copper clad laminate is divided into three stages,pyrolysis weight loss pre-stage,pyrolysis weight loss stage,and pyrolysis weight loss post-stage.The organic components of tin plate and copper clad laminate are close,weight loss starts at about 300℃,and completes at the fastest weight loss stage at about 400℃.Their weight loss are pyrolysis with activation energy of 23.30 kJ/mol and 12.46 kJ/mol respectively.Frame material consists of two types or more resins with different properties,which start to lose weight at 305 ℃,and there are two fastest weight loss stages of 305-325℃and 325-385℃ with activation energy of 25.92 kJ/mol.After pyrolysis at 450℃,Cu content in pyrolysis products of three materials rises by 8 percent points.Kinetic equations of crushed material of waste circuit board under different pyrolysis stages are obtained.
作者
刘承飞
刘俊场
施哲
杨坤
LIU Cheng-fei;LIU Jun-chang;SHI Zhe;YANG Kun(Faculty of Metallurgical and Energy Engineering,Kunming University of Science and Technology,Kunming 650093,China;Yunnan Copper Co.,Ltd.,Kunming 650102,China)
出处
《有色金属（冶炼部分）》
CAS
北大核心
2020年第10期99-104,共6页
Nonferrous Metals（Extractive Metallurgy)
基金
国家重点研发计划项目(2019YFC1904204)。
关键词
边框料
锡板
覆铜板
热解
动力学
frame material
tin plate
copper clad laminate
pyrolysis
kinetics
