研究了在硝酸介质中亚铁氰化钾钛对Ｃｓ~＋的离子交换机理，温度、搅拌速度和粒度对离子交换速度的影响，同时还研究了模拟高放废液中主要阳离子对Ｃｓ~＋离子交换的影响。实验结果表明，在低浓度的铯溶液中，离子交换反应在Ｃｓ~＋与Ｋ~＋之间进行，当铯浓度较高时，部分ＴｉＯ~（２＋）、Ｈ~＋参与交换；在较低的搅拌速度下，离子交换受膜扩散和粒内扩散联合控制，而在较高的搅拌速度下，离子交换主要受粒内扩散控制。 The effect of ion exchange mechanism, temperature, stirring speed and particle size on the ion exchange rate of Cs ~ + in potassium nitrate solution was studied in nitric acid medium. At the same time, the effects of the main cations in Cs + Effect of ion exchange. The experimental results show that the ion exchange reaction takes place between Cs ~ + and K ~ + in the low concentration of cesium solution. When the concentration of cesium is high, some TiO 2 + and H + Of the mixing speed, ion exchange membrane diffusion and intragranular diffusion joint control, and at higher stirring speed, ion exchange is mainly controlled by the intragranular diffusion.