中国科技核心期刊
美国化学文摘社(CAS)数据库
美国EBSCO学术数据库
日本科学技术振兴机构数据库(JST)
The purification of crude arsenic by vacuum sublimation is theoretically analyzed in terms of thermodynamics and separation coefficient,and the vacuum sublimation process experiments and trial production are carried out.A large amount of tests and exploration show that when the crude arsenic is treated by vacuum sublimation for one time,the impurity elements of antimony,bismuth and selenium are to difficult remove,and among them,the antimony impurity element has the highest content;when the crude arsenic is treated by vacuum sublimation under lower tempera-ture,the removal of antimony is effective with removal rate reaching 82.7 % at most.