钙热还原及熔盐萃取联合法一次性制备低氧低氟金属镝  

One Time to Produce Low Oxygen and Low Fluorine Dysprosium Metal by the Combining Method of Calcium Reducing Agent and Fused-Salt Extraction

作　　者：云月厚[1] 黄焦宏[2] 刘文生[1] 邰显康[1] 李国栋[1] 

机构地区：[1]内蒙古大学物理系,内蒙古呼和浩特010021 [2]包头稀土研究院,内蒙古包头014030

出　　处：《稀土》2006年第3期91-93,共3页Chinese Rare Earths

基　　金：内蒙古自治区自然科学基金资助项目(200308020104)

摘　　要：对低氧低氟金属镝的制备工艺及机理进行研究,结果表明:采用氟化氢铵处理后,再用氟化氢气体氟化,并进行脱氟处理的干法氟化工艺,可得到高纯氟化镝,氟化率达99.9%;采用钙热还原及熔盐萃取联合法一次性制备工艺,可有效降低金属镝中的氧、氟含量,制备的金属镝纯度大于99.9%。In this paper,firstly,Dy2O3 acted by NH,HFz change to be porous. Secondly, Dy2O3 is fluorinated by HF gas and defluorination process is used. During fused-salt extraction, one time to produce low oxygen and low fluorine dysprosium metal by the combining method of calcium reducing agent and fused-salt extraction are used. Results show that fluorination rate of Dy2O3 reaches 99.9%, oxygen and fluorine of content reduced in the dysprosium metal can get a very low level, low oxygen and low fluorine dysprosium metal is prepared, and purity of dysprosium metal prepared is more than 99.9%.

关 键 词：低氧低氟金属镝 干法氟化 钙热还原 熔盐萃取 一次性制备 

分 类 号：TF845.3[冶金工程—有色金属冶金]