黄金冶炼废水铜的萃取回收  

Copper Extraction and Recovery from Wastewater of Gold Smelting

作　　者：卢建丰[1] 

机构地区：[1]紫金矿业集团股份有限公司,福建上杭364200

出　　处：《有色冶金设计与研究》2012年第4期11-13,共3页Nonferrous Metals Engineering & Research

基　　金：国家重点基础研究发展规划项目(No.2010CB735501)

摘　　要：采用萃取工艺从黄金冶炼废水中回收铜,考查了萃取剂浓度、相比O/A、混合时间、pH值等因素对铜萃取率的影响,获得优化工艺条件:萃取剂浓度为20%,相比O/A=2:1,混合时间为3 min,pH值1.5～2。在优化工艺条件下开展了工业试验,铜萃取率可达95%以上,反萃液铜离子浓度可达到36 g/L以上,满足铜电积工序要求,实现了铜的高效回收。The extraction technology was used to recover copper from wastewater of gold smelting process and the effect of extractant concentration, ratio of oil phase to aqueous phase （O/A）, mixing time and pH value was studied. The optimal process condition was obtained as follows： extractant concentration is 20%, O/A is 2：1, mixing time is 3min and pH value is 1.5-2. In the optimal condition, the industrial tests were carried out. The results shows that the extraction rate of copper can be above 95% and copper ionic concentration can be above 36 g/L in stripping solution which meets requirements of copper electrowinning. This process realizes copper recovery in high efficiency.

关 键 词：黄金冶炼废水 铜 萃取 工艺条件 

分 类 号：TF111[冶金工程—冶金物理化学]