Separation and purification Sb2S3 from stibnite by vacuum distillation

被引：17

作者：

Zhou, Zhengen ^{[2
,3
]}

Liu, Dachun ^{[2
,3
]}

Xiong, Heng ^{[2
,3
]}

Zhang, Bo ^{[1
,2
,3
]}

Yang, Bin ^{[2
,3
]}

Deng, Yong ^{[2
,3
]}

Zhao, Jingyang ^{[2
,3
]}

机构：

[1] Natl Key Lab Clean Utilizat Complex Nonferrous Me, Kunming 650093, Yunnan, Peoples R China

[2] Kunming Univ Sci & Technol, Natl Engn Lab Vacuum Met, Kunming 650093, Yunnan, Peoples R China

[3] Yunnan Prov Key Lab Nonferrous Vacuum Met, Kunming 650093, Yunnan, Peoples R China

来源：

VACUUM | 2018年 / 157卷

关键词：

Vacuum; Stibnite; Enrichment; Purification; ANTIMONY;

D O I：

10.1016/j.vacuum.2018.08.022

中图分类号：

T [工业技术];

学科分类号：

08 ;

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.

引用

页码：487 / 491

页数：5

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