两步真空蒸馏法从复杂铅锑硫化矿中提取硫化锑
Extracting antimony trisulfide from complex lead-antimony sulfide ore by two-step vacuum distillation
李玲 1杨勉 2熊恒 3王艺曌 1杨斌3
作者信息
- 1. Faculty of Metallurgical and Energy Engineering,Kunming University of Science and Technology,Kunming 650093,China;National Engineering Laboratory for Vacuum Metallurgy,Kunming 650093,China
- 2. Faculty of Metallurgical and Energy Engineering,Kunming University of Science and Technology,Kunming 650093,China
- 3. Faculty of Metallurgical and Energy Engineering,Kunming University of Science and Technology,Kunming 650093,China;National Engineering Laboratory for Vacuum Metallurgy,Kunming 650093,China;State Key Laboratory Breeding Base of Complex Non-ferrous Metal Resources Clear Utilization in Yunnan Province,Kunming 650093,China
- 折叠
摘要
锑元素具有亲硫性,在矿物中多以硫化物的形式存在.锑最重要的硫化物为Sb2S3,在电池材料、军事工业等领域被广泛应用.随着单一锑硫化矿资源的日益枯竭,复杂铅锑硫化矿成为制备锑金属材料的重要矿物.为实现锑金属的高效提取与利用,本文采用两步真空蒸馏法从复杂铅锑硫化矿物中获得高纯度Sb2S3,从矿物源头实现锑与其他金属的分离.考察了蒸馏温度、时间对Sb2S3的纯度和锑元素直收率的影响.结果表明,在5 Pa的条件下,矿中的脆硫铅锑矿(Pb4FeSb6S14)在750℃完全分解为PbS,Sb2S3和FeS.在650℃保温80 min,第一步真空蒸馏获得的Sb2S3纯度为99.07 wt％.对第一步得到的残留物在800℃保温40 min,第二步真空蒸馏得到的Sb2S3纯度为99.41 wt％.两步真空蒸馏锑的直收率达到95.84％.真空蒸馏实现了复杂铅锑硫化矿中锑资源的高效利用,获得了纯度99 wt％的Sb2S3,为从含锑矿产资源中直接提取Sb2S3提供了一种有效方法.
Abstract
In this work, a two-step vacuum metallurgy method was proposed to produce Sb2S3 from complex lead- antimony sulfide ore. As revealed from the experimental results, jamesonite (Pb4FeSb6S14) is overall decomposed into PbS, Sb2S3 and FeS at 750 ℃. The first step vacuum distillation was performed at 650 ℃ for 80 min, by which the purity of Sb2S3 collected was 99.07 wt％. The second step vacuum distillation was to carry out the residue after the first-step distillation at 800 ° C for 40 min, by which the purity of Sb2S3 obtained after fractional condensation was 99.41 wt％. Then the total direct recovery of Sb in the two-step vacuum metallurgy method was 95.84％. The proposed method could be used to effectively exploit antimony resources from the source of complex lead antimony sulfide ore, produce high-purity Sb2S3 and achieve clean smelting as compared with conventional technology.
关键词
两步法/真空蒸馏/铅锑硫化矿/硫化锑/直收率Key words
vacuum distillation/lead-antimony sulfide ore/antimony trisulfide/direct recovery rate引用本文复制引用
基金项目
National Natural Science Foundation of China(51964033)
Youth Talent in Ten Thousand Talents Plan of Yunnan Province,China()
Scientist Studio of Yunnan Province,China()
出版年
2023
NETL
NSTL
维普
万方数据