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本文对所选用的贵、贱金属氰化络合物离子同时存在时的离子交换提取动力学进行了研究.业已发现,在大多数情况下,几小时后体系才能达到平衡,在这期间,树脂的组成发生了明显的变化。一般来说,贵金属的吸附容量达到最大值时,贱金属的吸附量在达到平衡后继续增加。对实验数据进行数学模型处理后所得到的动力学参数表明,在能斯特扩散层和树脂基体内,不同的金属氰化络合物的扩散系数有明显的差异,这种差异可用来说明实验中所观察到的现象。
In this paper, the kinetics of ion-exchange extraction for the simultaneous presence of expensive and base metal cyanide complex ions have been studied and it has been found that in most cases, the equilibrium is reached after a few hours, during which time the resin The composition of the significant changes have taken place. In general, when the adsorption capacity of the noble metal reaches a maximum, the adsorption amount of the base metal continues to increase after the equilibrium is reached. The kinetic parameters obtained after mathematical model processing of experimental data show that there are significant differences in the diffusion coefficients of different metal cyanide complexes in the Nernst diffusion layer and the resin matrix. This difference can be used to illustrate the experimental In the observed phenomenon.