氨—碳铵法浸出含锌烟灰  

Leaching of Zinc-bearing Ash with Ammonia-ammonium Bicarbonate Process

作　　者：陈启元[1] 王树宾[1] 胡慧萍[1] 王为振[1] 

机构地区：[1]中南大学化学化工学院,长沙410083

出　　处：《有色金属（冶炼部分）》2012年第6期7-10,共4页Nonferrous Metals（Extractive Metallurgy)

基　　金：国家重点基础研究发展计划(973计划)项目(2007CB613601)

摘　　要：研究氨—碳铵体系中pH、总氨浓度、液固比(L/S)、反应温度、反应时间等因素对三种含锌烟灰中锌和主要杂质元素浸出行为的影响。结果表明,较佳的工艺条件是:浸出剂总氨浓度9mol/L、pH=10.00、L/S=5、反应温度50℃、反应时间60min。此时锌浸出率大于80%。The effects of pH, total ammonia concentration of ammonia-ammonium bicarbonate system, ratio of solid to liquid （L/S）, temperature and leaching time on the leaching behavior of zinc and main impurities in three kinds of zinc-bearing ash were investigated. The results show that the zinc leaching rate is over 80% under the optimum conditions including total ammonia concentration of 9 mol/L and pH of 10.00, L/S of 5, temperature of 50℃, and the leaching time of 60 min.

关 键 词：氨-碳铵法 含锌烟灰 浸出 杂质行为 

分 类 号：TF813[冶金工程—有色金属冶金] TF111.31