【摘要】 根据碳酸氢铵、碳酸氢钠沉淀稀土时的pH值、体积等变化 ,对碳酸稀土结晶性能进行了研究 ,同时考察反应温度、料液浓度及pH对碳酸铈结晶的影响 ,产品中钠离子的含量及产品粒度情况。结果表明 :在一定温度和沉淀摩尔比下 ,采用边加沉淀剂边搅拌进行反应 ,可以快速得到晶状碳酸稀土沉淀更多还原

【Abstract】 Based on the change of pH value and volume while using ammonium hydrogen carbonate or sodium hydrogen carbonate to precipitate rare earth,the behaviour of rare earth carbonate crystal is studied.The effects of reaction temperature,sample concentration and pH on Ce 2(CO 3) 3 crystal have been investigated.The sodium content and particle size of products are characterized.It is shown that the Ce 2(CO 3) 3 crystal can be obtained rapidly by adding precipitator into solution while stirring under a certain temperature and mole ratio of the reactant.更多还原