【作者】 朱福良； 华一新；

【Author】 Zhu Fuliang, Hua Yixin~*(The Faculty of Materials and Metallurgical Engineering, Kunming University of Science and Technology, Kunming 650093, China)

【机构】 昆明理工大学材料与冶金工程学院；

【摘要】 采用了Constrained Chemical Potential Method（CCPM）法对Sb-S-O-H系进行多组元平衡分析,共有24个气相组分考虑在内。研究了Sb-S-O-H系气态平衡组成与水蒸气分压、硫势、氧分压及温度的关系。结果表明Sb-S-O-H系主要的气相组成为Sb₄O₆、H₂O和SO₂,其它物种的分压都比较低。控制较低的硫势(≤10^-8.2atm)和氧势(10^-14.5～10^-13.5atm)以及合适的温度（1023～1073K）时,气相中的Sb₄O₆最大,有利于锑的挥发。用水蒸气焙烧三硫化锑精矿的挥发产物XRD结果表明挥发产物的主要物相由Sb₂O₃组成,同时还含有少量的元素硫,这一点与气相平衡组成的计算结果是吻合的更多还原

【Abstract】 Multicomponent equilibria analysis has been carded out for the Sb-S-O-H quarternary system using a Constrained Chemical Potential Method（CCPM）. A total 24 species in vapor phase have been considered The vapor phase constituents of the Sb-S-O-H system have been calculated. The result shows that the vapor phase constituents of the Sb-S-O-H system are mainly composed of Sb₄O₆, SO₂ and H₂O. Under an appropriate temperature （1023K<T<1073K）, an oxygen partial pressure of 10^-14.5 to 10^-13.5 atm and a sulfur partial pressure of less than 10^-8.2 atm, it is expected to result in a higher partial pressure of Sb₄O₆. The steam can promote the volatilization of Sb. XRD result indicates that, in the steam atmosphere, the condensed product obtained is composed of Sb₂O₃ with small quantities of S₂. It is in accordance with the calculation results.更多还原