镉真空蒸馏的热力学模型与过程
력진공증류적열역학모형여과정
Thermodynamic Model and Experiment of Vacuum Distillation of Cadmium
  • 万方数据
    上海大学学报（英文版） 상해대학학보（영문판）
    JOURNAL OF SHANGHAI UNIVERSITY (ENGLISH EDITION)
    2000年 Z1期 148-152 ,共5页

    王林军%郭燕明%桑文斌%史伟民%顾永明%钱永彪%闵嘉华%吴汶海%居建华%夏义本

    왕림군%곽연명%상문빈%사위민%고영명%전영표%민가화%오문해%거건화%하의본



    cadmium%purification%vacuum distillation


    In this paper, a novel approach for highly efficient purification of cadmium by vacuum distillation was reported. During the cadmium vacuum distillation, a small quantity of cadmium oxide film, produced under lower vacuum, was intentionally induced into the evaporator, and the presence of cadmium oxide changed the behavior of impurities. Meantime, a thermodynamic model of the process, which described the phase composition in the evaporator and condenser during evaporation of cadmium, was established. The model was used to classify the impurities according to their behavior in the purification process. On the base of the model, the purification of cadmium by one-stage and two-stage distillation and the validity of the model were also discussed.
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