Calculation of prolonged high-temperature sublimation refining of a material consisting of spherical parts

We demonstrate the possibility of calculating the time-dependent vapor composition and impurity distribution in a condensate for a prolonged high-temperature sublimation of a model material consisting of spherical parts differing in size (and identical in initial composition). The calculation procedure is based on the use of distillation equations for a binary substance in a nonequilibrium vaporization process. It has been shown that the condensate obtained through the sublimation of such a material has an increased impurity concentration compared to the condensate obtained through the sublimation of a single sphere.