用结晶—重结晶法制备高纯硝酸铈

发布时间：2018-07-12 13:15

本文选题：结晶 + 重结晶　；参考：《湿法冶金》2017年01期

【摘要】：研究了高纯硝酸铈的结晶法制备及重结晶法纯化除杂,采用正交回归试验法考察了硝酸铈结晶过程中料液初始酸度、结晶温度、陈化时间对产品质量的影响,以及母液回收利用情况。结果表明:采用结晶—重结晶法可以获得高纯硝酸铈产品,其中非稀土杂质质量分数小于1.5×10-5;确定了洁净硝酸铈制备工艺条件。热分解机制研究结果表明,硝酸铈的组成为Ce(NO_3)_3·6H_2O。
[Abstract]:The preparation of high purity cerium nitrate and purification and removal of impurities by recrystallization were studied. The effects of initial acidity, crystallization temperature and aging time on the product quality during the crystallization of cerium nitrate were investigated by orthogonal regression test. And the recovery and utilization of mother liquor. The results show that high purity cerium nitrate can be obtained by crystallization and recrystallization, in which the mass fraction of non-rare earth impurities is less than 1.5 脳 10 ~ (-5), and the preparation conditions of clean cerium nitrate are determined. The results of thermal decomposition show that the composition of cerium nitrate is ce (Nos _ 3) _ 3H _ 2O _ 2.
【作者单位】：白云鄂博稀土资源研究与综合利用国家重点实验室;包头稀土研究院;瑞科稀土冶金及功能材料国家工程研究中心有限公司;内蒙古科技大学化学与化学工程学院;
【分类号】：TQ133.3

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