从失效汽车尾气催化剂中提取铈和镧的研究  

Study on Extraction of Cerium and Lanthanum from Spent Automobile Catalyst

作　　者：童伟锋[1] 董海刚[1] 吴晓峰[1] 闫君禺[1] 范兴祥[1] 赵家春[1] 雷云[1] 李博捷[1] 吴跃东[1] 

机构地区：[1]昆明贵金属研究所,贵研铂业股份有限公司,稀贵金属综合利用新技术国家重点实验室

出　　处：《有色金属（冶炼部分）》2014年第5期42-44,48,共4页Nonferrous Metals（Extractive Metallurgy)

基　　金：国家高技术研究发展计划(863计划)项目(2012AA063203)

摘　　要：采用硫酸熟化焙烧—酸浸工艺从失效汽车尾气催化剂中提取铈、镧,主要研究了酸料比、焙烧温度、焙烧时间、浸出温度、浸出酸度、浸出时间等对铈、镧浸出率的影响。结果表明,最佳工艺条件为:酸料比0.9,150℃焙烧3h,浸出液固比4∶1,浸出硫酸浓度1.0mol/L,浸出温度60℃,浸出时间4h。此时,铈、镧的平均浸出率分别为85.80%和85.01%。Cerium and lanthanum were extracted from spent automobile catalyst by sulfating roasting-acid leaching. The effects of sulfuric acid consumption, roasting temperature and time, leaching temperature, acid concentration and leaching time on leaching rates of cerium and lanthanum were investigated. The re- suits show that the leaching rate of cerium and lanthanum is 85.80% and 85.01% respectively under the optimum conditions including ratio of acid to material of 0. 9, roasting temperature of 150 ℃, roasting time of 3 h, leaching ratio of liquid to solid of 4 ： 1, acid concentration of 1.0 mol/L, leaching temperature of 60℃, and leaching time of 4h.

关 键 词：失效汽车尾气催化剂 硫酸化焙烧 铈 镧 回收率 

分 类 号：X705[环境科学与工程—环境工程] TF845[冶金工程—有色金属冶金]