Abstract
The object of research is crystallization refining process of uranyl nitrate (UN) from nitric acid solution. The process of crystallization refining is a working operation which can provide effective extraction and purification of desired products (fission materials) during spent nuclear fuel (SNF) reprocessing. The purpose of the work is mathematical description of the linear continuous crystallizer operating modes using the example of uranyl nitrate hexahydrate crystals sorting. The mathematical model presented in the work allows describing changes of crystallization process parameters in the active volume of crystallizer and choosing the most effective operating modes in terms of extraction of SNF reprocessing desired products.
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