THEORETICAL ANALYSIS OF PERIODIC PROCESSES OF EXTRACTION-CHROMATOGRAPHIC SEPARATION IN A CLOSED CASCADE OF APPARATUS
A periodic method of extraction-chromatographic separation of a mixture of components in a closed cascade of mixing-settling extractors is proposed. The analysis of the processes of extraction separation in a closed cascade operating in the chromatography mode is carried out. The theoretical foundations of the method are developed, which are necessary for modeling of the processes of extraction-chromatographic separation; examples of modeling various variants of such processes are given. The proposed separation method can be especially useful in the development of technologies for obtaining pure and highly pure substances, in particular in the production of rare earth metals.