Application of emulsion liquid membrane of double extraction carriers in recovery of gold and silver bimetallic elements in waste circuit board

The invention relates to an emulsion liquid membrane method for recovering gold and silver bimetallic elements in a waste circuit board by using double extraction carriers. The emulsion film formed by taking MIBK and Cyanex302 as double carriers further comprises a surfactant, a film solvent and a film reinforcing agent, and is applied to recovery of gold and silver double metal elements in the waste circuit board. The method is environment-friendly, energy-saving, simple in process and low in recovery cost, and a practical novel process method for recovering valuable gold and silver bimetallic elements in the waste circuit board is provided. 本发明涉及一种双萃取载体的乳状液膜法回收废线路板中的金和银双金属元素。以MIBK和Cyanex302为双载体组成的乳化液膜，还包括：表面活性剂、膜溶剂、膜增强剂，应用于回收废线路板中的金和银双金属元素。本发明不仅环保节能、工艺简单、回收成本低，而且提供了一种实用的回收废线路板中有价金和银双金属元素的新工艺方法。