辉锑矿
锑
减压蒸馏
化学
蒸馏
分析化学(期刊)
矿物学
色谱法
无机化学
黄铁矿
闪锌矿
作者
Zhengen Zhou,Dachun Liu,Heng Xiong,Bo Zhang,Bin Yang,Yong Deng,Jingyang Zhao
出处
期刊:Vacuum
[Elsevier]
日期:2018-11-01
卷期号:157: 487-491
被引量:13
标识
DOI:10.1016/j.vacuum.2018.08.022
摘要
Stibnite is the main raw material employed to produce antimony. With the excessive exploitation of high-grade stibnite, low-grade stibnite become more and more important. This study aimed to introduce a vacuum process for recovering and enriching antimony from low-grade stibnite. At the pressure of 10 Pa, by controlling heating temperature, Sb2S3 and Sb2O3 from stibnite (12.8 wt% Sb) was evaporated and enriched. We investigated the influence of vacuum distillation temperature and time on the recovery of low-grade Sb2S3. The result indicated antimony recovery could reach about 97% for suitable vacuum distillation conditions, and the purity of Sb2S3 was about 95 wt%. As for high-grade stibnite, through two-step vacuum distillation, Sb could not only be recovered in the form of Sb2S3, but also purified to commercial Sb2S3 with a purity about 99.5 wt%. The results demonstrated that vacuum distillation is a possible way to recover antimony from low-grade stibnite and purify Sb2S3 from high grade stibnite.
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