降低氧化镨钕中氯根的工艺研究  

Technical Research on Chlorine Reduction in Promethium-Neodymium Oxide

作　　者：张永华[1,2] 吴锦绣[1,2] 郭晓晖[1] ZHANG Yong-hua WU Jin-xiu GUO Xiao-hui(School of Material and Metallurgy, Inner Mongolia University of Science and Technology, Baotou 014010, Inner Mongolia, China Inner Mongolia Autonomous Universities~ Key Laboratory of New Technologies of Modern Metallurgy and Application of Rare Earth Materials, Baotou 014010, Inner Mongolia, China)

机构地区：[1]内蒙古科技大学材料与冶金学院,内蒙古包头014010 [2]内蒙古自治区高校稀土现代冶金新技术与应用重点实验室,内蒙古包头014010

出　　处：《有色金属（冶炼部分）》2017年第6期58-61,共4页Nonferrous Metals（Extractive Metallurgy)

基　　金：国家杰出青年基金资助项目(51045216);内蒙古高校基金项目(NJZY13134);内蒙古科技大学材料与冶金学院青年孵化平台资助项目

摘　　要：氯化镨钕经过沉淀、灼烧后得到镨钕氧化物中氯根含量偏高,研究两种沉淀工艺中的沉淀时间和料液浓度,灼烧过程中温度、装料方式和通风量等工艺条件对氯根的影响。结果表明,采用并流沉淀工艺,料液浓度为180g/L,沉淀时间大于6h,控制灼烧温度为1 050℃,增加装料松散度,每吨REO的通风量为150m^3/min,得到碳酸镨钕的氯根含量≤0.035%,氧化物中氯根含量≤0.010%。通过SEM表征表明,碳酸盐和氧化物的晶体形貌对氯根的含量有一定影响。Chloride in promethium-neodymium oxide after precipitation and burning of promethiumneodymium chloride was high.Effects of settling time and concentration of feed liquid of two precipitation processes,temperature,loading mode,and ventilation rate in calcination process on content of chlorine root were investigated.The results show that with cocurrent flow process,content of chlorine root in promethium-neodymium carbonate and promethium-neodymium oxide is 0.035% below and 0.010% below respectively under the conditions including feed liquid concentration of 180g/L,precipitation time of6h,calcination temperature of 1 050 ℃,charging loose,and ventilation rate of per ton REO of 150m^3/min.Crystal morphology of carbonate and oxide exerts some effect on content of chlorine root based on SEM analysis.

关 键 词：低氯根 碳酸镨钕 氧化镨钕 

分 类 号：TF845[冶金工程—有色金属冶金]