摘要
PCB行业主要存在酸性和碱性两种废液,当前对蚀刻废液的处理方法有许多种,其中沉淀法是经济的处理方法,而且去除铜率高。通过加入试剂,将废液中的铜离子转变成氢氧化铜沉淀,然后加热煅烧,得到最终产品氧化铜。分别采用单独对酸和两种废液混合二种方式制取氧化铜;讨论了酸度对沉铜量的影响,结果表明,铜离子沉淀的最佳pH分别为9和4.5,沉淀最佳的分解温度和时间分别为500℃和30 min。探讨了水洗量和次数对杂质的去除影响,分别得到水洗三次,纯净水两次为最佳结果。
The PCB industry mainly produced acidic and alkaline two kinds of waste liquid.Currently there are many kind of etching waste liquid treatment methods,in which precipitation method is an economical processing method,and has a high rate of removal of copper.By adding reagent,waste copper ions went into copper hydroxide precipitate,then by heating and calcining,the final product of copper oxide was produced.This paper separates the acid and two kinds of liquid mixing in two ways for preparing cupric oxide;discusses the acidity on copper deposition volume effects which shows that in copper ion precipitation,the best pH were 9 and 4.5,precipitating the optimal decomposition temperature and time were 500 degrees C and 30min.This paper discusses the washing quantity and frequency of impurity removal effect,which shows that washed 3 times,with 2 times pure water can get the best results.
出处
《印制电路信息》
2012年第5期48-49,53,共3页
Printed Circuit Information
基金
广东省科技计划资助项目(2011B031000013)
关键词
氧化铜
铜蚀刻废液
沉淀法
印刷电路板
copper oxide
copper etching solution
precipitation method
printed circuit board
