Abstract: Simulated moving-bed is used to overcome the difficulty of circulating and separating resins from the pulp in resin-in-pulp process. This makes the processes of adsorption of metals, regeneration and washing of resins to be finished in only one device. In order to provide a sound theoretical basis for the design of the new type contactor, the overall mass transfer coefficients are calculated and concentration curves of each stage in continuous operations are formulated. Experimental results show that the flow rate and ion concentration in the feed pulp have different effects on the concentration curves of a single stage or four-stage continuous operation. Experimental results fit well to the theoretical model. The concentration curves and overall mass transfer coefficients for a single stage and four-stage operation under different conditions are obtained.

摘要： 首次将模拟移动床用于离子交换树脂矿浆过程,使吸附、淋洗、再生等步骤在同一设备中进行,简化了工艺流程和操作.应用总传质系数的概念,推导出吸附段各级搅拌吸附槽中浆相的离子浓度分布曲线,单级和4级连续吸附的实验结果与计算结果吻合得很好.经过分析计算,得到了不同操作条件下的总传质系数.进料流量和离子浓度对单级和4级连续吸附操作的浓度分布曲线均有不同程度的影响.