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

作　　者：李玲 杨勉 熊恒 王艺曌 杨斌 LI Ling;YANG Mian;XIONG Heng;WANG Yi-zhao;YANG Bin(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)

机构地区：[1]Faculty of Metallurgical and Energy Engineering,Kunming University of Science and Technology,Kunming 650093,China [2]National Engineering Laboratory for Vacuum Metallurgy,Kunming 650093,China [3]State Key Laboratory Breeding Base of Complex Non-ferrous Metal Resources Clear Utilization in Yunnan Province,Kunming 650093,China

出　　处：《Journal of Central South University》2023年第1期132-141,共10页中南大学学报（英文版）

基　　金：Project(51964033) supported by the National Natural Science Foundation of China;Project supported by the Youth Talent in Ten Thousand Talents Plan of Yunnan Province,China;Project supported by the Scientist Studio of Yunnan Province,China。

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。In this work, a two-step vacuum metallurgy method was proposed to produce Sb2S3from complex leadantimony sulfide ore. As revealed from the experimental results, jamesonite(Pb4FeSb6S14) is overall decomposed into PbS, Sb2S3and FeS at 750 °C. The first step vacuum distillation was performed at 650 °C for 80 min, by which the purity of Sb2S3collected 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 Sb2S3obtained 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 highpurity Sb2S3and 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 

分 类 号：TB3[一般工业技术—材料科学与工程]