从镧系光学玻璃废料中回收氧化镧  

Recovery of Lanthanum Oxide from Waste Lanthanide Optical Glass

作　　者：袁金秀[1] 许涛[2,3,4] 刘晓杰[3,4] 秦玉芳[3,4] 

机构地区：[1]潍坊科技学院山东半岛蓝色经济工程研究院,山东寿光262700 [2]武汉理工大学资源与环境学院,湖北武汉430070 [3]包头稀土研究院,内蒙古包头014030 [4]瑞科稀土冶金及功能材料国家工程研究中心,内蒙古包头014030

出　　处：《稀土》2015年第5期81-86,共6页Chinese Rare Earths

基　　金：国家环保部公益性行业科研专项(20110949)

摘　　要：探究用盐酸从某种镧系光学玻璃废料中浸出氧化镧,从浸出过程中盐酸的浓度、浸出温度、液固比和浸出时间方面对各元素浸出率的影响进行了研究,并得出了镧的最佳浸出条件;利用水解沉淀法除去浸出液中杂质离子;采用草酸对除杂浸液中的镧进行沉淀分离,得到纯度为99.2%的氧化镧,总回收率达到96.8%。This paper studied recovery of lanthana from waste lanthanide optical glass by hydrochloric acid leaching.Effects of hydrochloric acid concentration,temperature,solid- liquid ratio and leaching time on leaching rate were investigated,and optimal leaching condition was obtained. The impurity ions in leaching solution were removed by hydrolysis precipitation method. Lanthanum in solution was precipitated by oxalic acid. The purity and the recovery rate of lanthanum oxide could reach 99. 2% and 96. 8%,separately.

关 键 词：镧系光学玻璃废料 氧化镧 盐酸浸出 

分 类 号：TF803.21[冶金工程—有色金属冶金]