Abstract
We have developed physicochemical principles of the ultrapurification of crude tellurium and cadmium by distillation and crystallization and determined the effective solid-liquid distribution coefficients of impurities in tellurium and cadmium. Based on the observed behavior of impurities in different ultrapurification processes, we have proposed a combined process for the preparation of high-purity (99.9999%) tellurium and cadmium.
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