CADMIUM PURIFICATION BY VACUUM DISTILLATION IN THE PRESENCE OF ITS OXIDE - THERMODYNAMIC MODELING AND EXPERIMENT

Authors
KOVALEVSKI SV KOSYAKOV VI SHELPAKOVA IR
Citation
Sv. Kovalevski et al., CADMIUM PURIFICATION BY VACUUM DISTILLATION IN THE PRESENCE OF ITS OXIDE - THERMODYNAMIC MODELING AND EXPERIMENT, Journal of crystal growth, 167(1-2), 1996, pp. 208-211
Citations number
8
Categorie Soggetti
Crystallography
Journal title
Journal of crystal growth → ACNP
ISSN journal
00220248
Volume
167
Issue
1-2
Year of publication
1996
Pages
208 - 211
Database
ISI
SICI code
0022-0248(1996)167:1-2<208:CPBVDI>2.0.ZU;2-J
Abstract
We describe a process of cadmium vacuum distillation in the presence o f a small quantity of its oxide. A thermodynamic model of the process which describes the phase composition in the evaporator and condenser during evaporation of cadmium was established. The model is used to se parate impurities into classes according to their behaviour in the pur ification process. Both the experimental equipment and results of the purification process of cadmium grade 99.9 by one-stage and two-stage distillation are discussed.