文献类型：期刊文献

中文题名：FeCl3废蚀刻液封闭循环再生及铜资源的工业回收

英文题名：Closed recycling regeneration of waste FeCl3 etching solution and industrial recovery of copper resources

作者：周先桃[1];陈云[1];方佩珍[2];缪晓芳[3];汪飞[1];杨彤[1]

机构：[1]华东理工大学机械与动力工程学院,上海200030;[2]浙江建投环保工程有限公司,浙江杭州310013;[3]贝卡尔特中国技术研发有限公司,江苏无锡214429

年份：2019

卷号：39

期号：9

起止页码：195

中文期刊名：现代化工

外文期刊名：Modern Chemical Industry

收录：CSTPCD;;Scopus;北大核心:【北大核心2017】；CSCD:【CSCD_E2019_2020】；

语种：中文

中文关键词：废蚀刻液;资源回收;封闭循环;晶种回收

外文关键词：waste etching solution;resource recovery;closed cycle;seed recovery

摘要：FeCl3蚀刻液由于具有强氧化性和腐蚀能力,因而被广泛应用于惰性加工过程中,然而加工过程中产生大量的废蚀刻液,不仅污染环境而且浪费材料。为了解决与含Cu的FeCl3废蚀刻液再生循环有关的问题,本研究改进了某企业的结晶再生过程,并以CuCl2·2H2O的形式回收铜。在原始方法的基础上,加入水力旋流器以预分离浆料,通过研究不同浓度下入口流量和入口压力下水力旋流器分离效率的变化,确定最佳入口压力约为0.25 MPa。实验结果表明,离心机的工作量减少了约80%,CuCl2晶体的平均比表面积减少了50%,洗涤过程后CuCl2晶体副产物的产量增加了约20%。
FeCl3 etching solution is widely used in etching processes due to its strong oxidation and corrosion properties.However,a large amounts of waste etching solution is generated in etching process,which can possibly pollute the environment and spend materials.Aiming to address problems related to the use of recycled waste FeCl3 etching solution that contains Cu,the crystallization regeneration process in a certain company is improved and copper is recovered in the form of copper chloride crystal.Based on the original process,a hydro-cyclone is added to pre-separate the slurry.Through investigating the change of the inlet flow rate and separation efficiency of the hydro-cyclone with inlet pressure under different concentrations,the optimal inlet pressure is determined as approximately 0.25 MPa.Experimental results indicate that the workload of the centrifuge is reduced by approximately 80%,the average specific surface area of copper chloride crystal decreases by 50%.The production of copper chloride crystal byproducts is increased by approximately 20%after washing process.