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%.
出处
《中南大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
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)
关键词
锌锰电池
真空冶金
汞
镉
回收利用
zinc-manganic battery
vacuum metallurgy
mercury
cadmium
recycling and utilization
