含锌危险废物碱法浸出处理研究  

Treatment of hazardous waste bearing Zn by alkaline leaching

作　　者：张承龙[1] 郭翠香[2] 刘清[2] 赵由才[1] 

机构地区：[1]华东理工大学资源与环境工程学院,上海200237 [2]同济大学污染控制与资源化研究国家重点实验室,上海200092

出　　处：《铀矿冶》2008年第1期53-56,共4页Uranium Mining and Metallurgy

摘　　要：对含锌危险废物碱法浸出处理进行了研究。试验得到了较佳工艺:当氢氧化钠溶液浓度为6 mol/L、温度为90℃、浸出液固质量比为10∶1时,锌浸出率可达90%以上;浸出液经电解等方法提取锌后作浸出剂循环重复利用;浸出渣中有害元素均低于浸出毒性鉴别标准值(GB5085.3—1996),可作为一般废渣处理。Alkaline leaching of Zn from hazardous waste bearing Zn is studied. The best process parameters are obtained as follows： concentration of NaOH being 6 mol/L, temperature of pulp being 90 ℃, mass ratio of liquid to solid being 10 ： 1. Under these conditions recovery of Zn is over 90%. The leaching solution is recycled into the next leaching operation after most of the zinc is electrolyzed, and the leaching residues can be disposed as non-hazardous waste.

关 键 词：含锌废渣 危险废物 碱法浸出 

分 类 号：TF111.3[冶金工程—冶金物理化学]