电镀污泥的焙烧预处理及其浸出动力学  

Roasting Pretreatment of Electroplating Sludge and Its Leaching Kinetics

作　　者：陈娴[1] 陆金[1] 殷燕[1] 唐雪弢[1] 程洁红[1] 

机构地区：[1]江苏技术师范学院化学与环境工程学院,江苏常州213001

出　　处：《电镀与环保》2014年第3期43-46,共4页Electroplating & Pollution Control

基　　金：江苏省科技厅自然科学基金资助项目(No.BK2008547);江苏省高校科研成果产业化推进项目(No.2011-11)

摘　　要：采用焙烧-酸浸法回收电镀污泥中的有价金属。研究了焙烧过程中金属的浸出特性和迁移转化规律,以及焙烧渣中Cu的浸出动力学。结果表明:焙烧预处理实现了污泥减量和金属富集,同时未明显造成金属残渣态的形成,保持了金属的高浸出性。在800℃下焙烧1h后,焙烧渣中Cu的浸出率高达99%以上,其浸出动力学符合经验动力学模型。The valuable metals in electroplating sludge were recovered by roasting-acid leaching method.The leaching characteristics as well as the migration and transformation law of metals in roasting process and the leaching kinetics of Cu in roasting slag were studied.The results show that roasting pretreatment has realized sludge reduction and metal enrichment,no obvious metal residue state is formed,maintaining a high leachability of metals.After 1 hour of roasting at 800 ℃,the leaching roasting rate of Cu in the slag is as high as more than 99 ％,and its leaching kinetics conforms to empirical kinetic model.

关 键 词：电镀污泥 焙烧 金属 浸出动力学 

分 类 号：X781.1[环境科学与工程—环境工程]