从盐酸体系中直接制备低氯根碳酸铈  

Study on Preparation Technology of Cerium Carbonate with Low Chlorine in Hydrochloric Acid Medium

作　　者：田皓[1,2] 许延辉[1,2] 张丞[1,2] 马升峰[1,2] 刘铃声[1,2] 

机构地区：[1]稀土冶金及功能材料国家工程研究中心,内蒙古包头014030 [2]包头稀土研究院,内蒙古包头014030

出　　处：《稀土》2016年第1期98-102,共5页Chinese Rare Earths

基　　金：科研院所技术开发研究专项基金(2013EG113176)

摘　　要：以碳酸氢铵做沉淀剂直接在盐酸体系中制备低氯根碳酸铈,通过SEM、化学分析等手段研究了加料方式、料液浓度及反应温度等对碳酸铈中Cl-存在形态的影响,结果表明,碳酸铈中Cl-存在形式与制备方法有很大相关性,可以通过制备条件的控制来制备低氯根含量的碳酸铈。制备出的碳酸铈产品REO含量大于50%,Cl-含量小于0.0050%,其他元素含量均满足客户需求。This paper researched the preparation technology of cerium carbonate with low chlorine in hydrochloric acid medium using ammonium hydrogen carbonate as agent. Effects of preparation parameters on the existences of Cl-in cerium carbonate were investigated through SEM and chemical analysis means. Chemical analysis shows that REO content of the products is greater than 50% and Cl-content is less than 0. 0050%. The analysis results shows that the existences of Cl-have much to do with the preparation methods. So cerium carbonate with low chlorine can be prepared by controlling of preparation conditions.

关 键 词：盐酸 低氯根 碳酸铈 碳酸氢铵 

分 类 号：O614.33[理学—无机化学]