【摘要】 从理论上分析了真空蒸馏脆硫铅锑矿富集Sb₂S₃的可行性并展开了实验研究,对实验样品进行元素成分分析和物相分析,探究蒸馏温度保温时间等因素对富集Sb₂S₃的影响,实验研究结果表明,通过真空蒸馏的方法可以实现脆硫铅锑矿中Sb₂S₃的富集,获得高质量的Sb₂S₃,随着温度的升高,锑元素的挥发率不断增加,但冷凝物中锑含量先增加后减小。通过对比确定实验最佳蒸馏温度为973 K,保温时间为30 min,Sb₂S₃的挥发率高达92.84%,锑的含量高达68.47%。对比目前主流处理技术,该方法可以缩短锑冶炼现有工艺流程,提高资源利用率,减少环境污染。更多还原

【Abstract】 The feasibility of the enrichment of Sb₂S₃ from jamesonite by vacuum distillation was theoretically analyzed. The impact of the distillation conditions,including but not limited to the distillation temperature,holding time,pressure and contents of impurities,on the Sb₂S₃ volatilization rate was experimentally investigated with X-ray diffraction scanning electron microscopy,energy dispersive spectroscopy and conventional chemical analysis. The preliminary results show that depending on the distillation temperature,the enrichment of Sb₂S₃ from jamesonite by vacuum distillation is feasible. For example,as the distillation temperature increased,the Sb-volatilization rate increased,but the Sb-content in the condensate changed in an increase-decrease mode. Distilled at 973 K and held for 30 min,the volatilization rate of Sb₂S₃ was found to be 92. 84%,and the Sb-content in the condensate was estimated to be 68. 47%. We suggest that the newly-developed vacuum distillation may outperform the conventional Sb-extraction from jamesonite by smelting because of the reduced environmental pollution,simplified operation and decreased power consumption.更多还原