从稀贵液中直接电沉积金的研究  

The study of direct gold electrowinning from dilute cyanide solutions

作　　者：张建武[1] 张桂珍[2] 吴仙花[2] 盛桂云[2] 

机构地区：[1]吉林省冶金研究院 [2]长春工程学院

出　　处：《黄金》2006年第10期36-38,共3页Gold

摘　　要：用电极过程动力学对从氰化贵液中直接电沉积金过程进行分析,可得出提高Au(CN)2-离子与阴极碰撞几率和减小析H2副反应是提高电沉积金效率的关键因素。采用多孔电极、析出H2小的电极材料和分两段电解措施,使从低浓度含金贵液中直接电沉积金的效率达到98%以上。Based on analysis of direct gold electrowinning process in view of electrode process kinetics, Key factors of getting high recoveries of gold electrowinning are raising va]id collision chance of Au（ CN ）2 ions to surface of cathode electrode and lowering vice reaction about H2. The recoverits of gold electrowinning from dilute cyanide solutions is about 98% by means of using porous electrode, lowering vice reaction of H2 and two stage electrolysis.

关 键 词：直接电沉积金 碰撞几率 析H2副反应 稀贵液 

分 类 号：TD953[矿业工程—选矿]