摘要
A new process was proposed for extracting cadmium from cadmium-containing raw materials by the ammonium-ammonia method.Investigation on leaching in the process for treating an electric precipitation dust from ISP sintering factory was carried out.The best conditions were established as follows:the ratio of liquid to solid was 2.5,[NH3]/[NH4+]=3/5,total concentration of ammonium and ammonia was 8 mol·L -1,the leaching time was 1.5 h at 35℃.Under the above conditions, leaching rate of cadmium and its concentration in the leached solution was 90.99% and 8.74 g·L -1,respectively.
A new process was proposed for extracting cadmium from cadmium-containing raw materials by the ammonium-ammonia method. Investigation on leaching in the process for treating an electric precipitation dust from ISP sintering factory was carried out. The best conditions were established as follows： the ratio of liquid to solid was 2.5, [NH3]/[NH4^＋]=3/5, total concentration of ammonium and ammonia was 8 mol·L^-1 , the leaching time was 1.5 h at 35℃. Under the above conditions, leaching rate of cadmium and its concentration in the leached solution was 90.99% and 8.74 g·L^-1 , respectively.
出处
《化工学报》
EI
CAS
CSCD
北大核心
2006年第7期1727-1731,共5页
CIESC Journal
关键词
镉
氨法
浸出
cadmium
ammonium-ammonia method
leaching
