摘要
本文研究了ＮＨ４ＨＣＯ３沉淀稀土的工艺过程。实验结果表明：Ｙ２Ｏ３粉末的性能与温度、ｐＨ值、浓度等因素有关。高温反应得到的沉淀物不仅易过滤，且包裹水少，控制适当的反应条件可获得平均粒径为４μｍ的Ｙ２Ｏ３颗粒。
The technological processes of NH 4HCO 3 Precipitating rare earth had been studied. The results show that the property of Y 2O 3 powders is relative to the factors of temperature, pH value and concentration. The precipitate obtained in the high temperature reaction is not only filtered easily ,but also contains a little packed water.By controlling the conditions of reaction ,the Y 2O 3 powders particle of D 50 =4μm can be obtained.
出处
《稀土》
EI
CAS
CSCD
北大核心
1997年第1期14-17,共4页
Chinese Rare Earths
关键词
稀土
碳酸氢铵
表面活性剂
沉淀
rare earth , NH 4HCO 3, fast coagulation, surfactant
