溶剂萃取法从化学镀铜废液中回收铜

RECOVERY OF COPPER FROM SPENT ELECTROLESS Cu-PLATING BATH BY SOLVENT EXTRACTION.

采用溶剂萃取法研究了从含强络合剂的化学镀铜废液中回收铜的可行性 ,结果表明 :从含酒石酸钾钠的化学镀铜废液萃取铜时 ,采用LIX5 4作为萃取剂 ,在pH值为 6～ 10之间 ,铜的萃取率大于 99%。然后通过反萃 。

In order to recover copper from spent electroless plating solution containing strong complexing agents,the applicability of solvent extraction had been investigated.The results showed that more than 99% of the copper could be extracted from spent electroless plating solution containing tartrate when LIX54 was used as the extractant at the pH range from 6 to 10.The copper could be stripped from Cu-loaded organic phase and could be reused as source of Cu in the electroless plating process.