煤矸石中稀土元素的提取富集工艺  

Technique for extraction and concentration of rare earth elements in gangue

作　　者：陈博[1] 来雅文[2] 肖国拾[3] 徐长跃[4] 

机构地区：[1]吉林大学化学学院,长春130026 [2]吉林大学地球探测科学与技术学院,长春130026 [3]吉林大学测试科学实验中心,长春130026 [4]吉林大学材料科学与工程学院,长春130026

出　　处：《世界地质》2009年第2期257-260,共4页World Geology

基　　金：吉林省科技厅基金项目(2005015)

摘　　要：用盐酸浸取煤矸石粉末样品，选择性溶解其中稀土元素（REE）、Fe、Al和Ti等元素；用氢氧化铁共沉淀法有效地分离富集稀土元素（REE），继而用草酸盐沉淀将稀土元素与Fe定量分离。实验表明：稀土元素的提取率为88．25％～92．86％，稀土氧化物纯度达到99．00％。本方法具有操作简单、富集效率较高等特点。Gangue samples have been macerated in hydrochloride acid, and the rare earth elements （REE）, Fe, Al and Ti were dissolved selectively. After that the rare earth elements are separated by coprecipitation method of ferric hydroxide, and then they are quantitatively separated with iron by precipitation process of oxalate. The results of experiment show that the extraction ratio of the rare earth elements is 88.25% -92. 86%, and the purity of rare earth oxide is 99.00%. The method is characterized by its simple application and high enrichment ratio.

关 键 词：煤矸石 稀土元素 提取富集 草酸 

分 类 号：P618.7[天文地球—矿床学]