真空冶金回收废旧锌锰电池的汞和镉试验研究  

Experimental research on recycling of Hg and Cd from waste zinc-manganic batteries by vacuum metallurgy

作　　者：何德文[1] 刘蕾[1] 肖羽堂[2] 周欢年[1] 

机构地区：[1]中南大学冶金科学与工程学院环境工程系,湖南长沙410083 [2]南开大学环境科学与工程学院,天津300071

出　　处：《中南大学学报（自然科学版）》2011年第4期893-896,共4页Journal of Central South University:Science and Technology

基　　金：国家自然科学基金资助项目(50274073);广东省教育部产学研结合项目(2009A090100016)

摘　　要：采用真空冶金方法处理锌锰电池,研究分离回收汞（Hg）和镉（Cd）的工艺方法,考察真空度、温度、加热时间对2种金属回收率的影响。试验结果表明：在真空度低于91.99 kPa时,Hg和Cd的回收率较低,但当真空度为91.99~98.66 kPa时,2种金属的回收率显著上升,超过98.66 kPa时,Hg和Cd的回收率几乎保持不变;且随着温度的增加和加热时间的延长,Hg和Cd的回收率也增加,但当温度达到一定值和加热时间超过2.5 h时,Hg和Cd的回收率接近95%的饱和值。A vacuum metallurgical process for treating waste zinc-manganic batteries and recovering mercury（Hg） and cadmium（Cd） elements was studied.The effect of vacuum degree,temperature and heating time on Hg and Cd removal was investigated.The experimental results show that vacuum metallurgical process can effectively recover Hg / Cd in waste batteries and its recovering rate increases with the increase of temperature and heating time.When the vacuum degree is 91.99-98.66 kPa,the heating time is 2.5 h;when the temperatures are 350 ℃ for Hg and 725 ℃ for Cd,the recovering rate is up to 95%.

关 键 词：锌锰电池 真空冶金 汞 镉 回收利用 

分 类 号：X703[环境科学与工程—环境工程]