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首页> 外文会议>International Conference on Asia-European Sustainable Urban Development; 20060404-06; Chongqing(CN) >Recovery of copper from acidic etcher by IEMEC and its recycling
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Recovery of copper from acidic etcher by IEMEC and its recycling

机译：IEMEC从酸性蚀刻机中回收铜及其回收

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摘要

A close-looped flow-sheet based on the ion exchange membrane-electro-winning coupling(IEMEC) technology was proposed to regenerate an acidic copper etcher on-site, recover copper selectively and recycle its use. It was characterized by selective recovery of copper from the spent etcher accomplished by IEMEC, and at the same time all the other components useful for etching were regenerated. The results show that at least 90% of electricity efficiency for copper recover in the IEMEC process can be maintained and the optimum conditions are as follows: cell voltage 1.5 - 2. 5 V, operating temperature 35 -45 ℃, keeping copper content in the cathode chamberat 20 -60 g/L and current density 0.4 - 1.2 A/m2. The regenerated etcher can be successfully reused to etch copper after adjusting its composition to the normal range, and its recycling property is as good as that of the fresh etcher after 50 times of use-recover-regeneration cycles.
机译：提出了一种基于离子交换膜-电赢耦合（IEMEC）技术的闭环流程，用于现场再生酸性铜蚀刻剂，选择性回收铜并循环使用。它的特点是通过IEMEC从废蚀刻机中选择性地回收铜，并同时再生了所有其他可用于蚀刻的成分。结果表明，IEMEC工艺中铜的回收效率至少可保持90％，最佳条件如下：电池电压1.5-2。5V，工作温度35 -45℃，保持铜含量在阴极室为20 -60 g / L，电流密度为0.4-1.2 A / m2。将其组成调整到正常范围后，可以成功地将再生的蚀刻剂重新用于蚀刻铜，并且在经过50次使用-回收-再生循环后，其再生性能与新鲜的蚀刻剂相同。

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