用硝酸铵复盐沉淀法制备高纯硝酸铈铵  

Preparation Technology of High Purity Ammonium Cerium Nitrate by Ammonium Nitrate Double Salt Precipitation

作　　者：乔军[1] 马莹[1] 王晶晶[1] 杨启山[2] 石洪亮[2] 黄凯[2] 

机构地区：[1]包头稀土研究院,内蒙古包头014030 [2]内蒙古科技大学化学与化学工程学院,内蒙古包头014010

出　　处：《湿法冶金》2016年第1期67-72,共6页Hydrometallurgy of China

摘　　要：研究了以硝酸铵复盐沉淀法制备高纯硝酸铈铵,考察了不同条件对硝酸铈铵氧化率、收率、重金属杂质质量分数的影响,对比了高、低温2种条件下制备的产品质量。结果表明:硝酸铵复盐沉淀法所制备的硝酸铈铵的组成为(NH4)2[Ce(NO3)6];最佳条件下制备的产品中,∑REO质量分数大于31%,重金属杂质质量分数小于1.0×10-5,产品氧化率大于98.5%,纯度很高。Preparation of high purity ammonium cerium nitrate by precipitation process with ammonia nitrate was studied. Influences of preparation conditions on oxidation rate, yield, content of heavy metal impurities of ammonium cerium nitrate were investigated. Two products made by the process at higher temperature and lower temperature were contrasted and analyzed. The structure and composition of ammonium cerium nitrate for the products were determined. The results show that the chemical formula of the product is（NH4 ）2 ECe（NO3 ）6 ]. Under reasonable conditions, ∑REO mass fraction in the products is 31%, oxidation rate of cerium is more than 98. 5%, the contain of heavy metal impurities is less than 1.0× 10^-5.

关 键 词：硝酸铈铵 硝酸铵 复盐沉淀法 制备 

分 类 号：TQ113.74[化学工程—无机化工] TF845[冶金工程—有色金属冶金]