Distribution of antimonium chalcogenides under conditions of vacuum thermal processing of mattes

IF 0.8 Q4 METALLURGY & METALLURGICAL ENGINEERING
V. N. Volodin, S. Trebukhov, A. Nitsenko, N. Burabayeva, X. Linnik
{"title":"Distribution of antimonium chalcogenides under conditions of vacuum thermal processing of mattes","authors":"V. N. Volodin, S. Trebukhov, A. Nitsenko, N. Burabayeva, X. Linnik","doi":"10.31643/2023/6445.32","DOIUrl":null,"url":null,"abstract":"It was established based on the analysis of the results of published works and the results obtained by the authors that there is no information on the behavior and distribution of antimony chalcogenides - Sb2S3, Sb2Se3, Sb2Te3, as well as double systems - Sb2S3-Sb2Se3, Sb2S3-Sb2Te3 and Sb2Se3-Sb2Te3 under the vacuum processing conditions for polymetallic mattes performed at 1100-1250 °C and a vacuum of 15 - 0.7 kPa. It was found based on the saturated vapor pressure values for monochalcogenides that the vapor pressure of free antimony sulfide will be 58.95 kPa at 1100 °C, i.e. the lower limit of the technological interval, which indicates its complete transfer to the vapor phase when the mattes are evacuated; the vapor pressure of free antimony selenide at 1100 °C exceeds the atmospheric pressure value (101.3 kPa), and Sb2Se3 would be completely extracted into the vapor phase in vacuum; the boiling point of liquid antimony telluride at atmospheric pressure corresponds to 971 °C, and it would be extracted into the vapor phase under the conditions of matte evacuation. The thermodynamic evaporation characteristics of antimony chalcogenides were found. It was concluded based on the location of the boundaries of the liquid and vapor phase coexistence fields that it is impossible to separate binary systems of antimony chalcogenides into separate compounds in the process of one evaporation cycle – condensation, in binary systems. Different effects of pressure reduction over melts were found. Lowering the pressure from atmospheric one to 0.7 kPa in Sb2S3-Sb2Se3 system did not change the position of the boundaries of the liquid and vapor fields (L + V) under the temperature; field width (L+V) decreases with decreasing pressure in Sb2S3-Sb2Te3 system; the field width first decreases with temperature, then increases in system Sb2Se3- Sb2Te3. At the same time, the position of the boiling curves of antimony chalcogenide solutions indicates the complete transfer of compounds into the vapor phase under the conditions of matte distillation processing (at 1100-1250 °C) at atmospheric pressure which is important for assessment of the distribution of antimony and rare metals - selenium and tellurium by processed products.","PeriodicalId":29905,"journal":{"name":"Kompleksnoe Ispolzovanie Mineralnogo Syra","volume":"1 1","pages":""},"PeriodicalIF":0.8000,"publicationDate":"2023-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Kompleksnoe Ispolzovanie Mineralnogo Syra","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.31643/2023/6445.32","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"METALLURGY & METALLURGICAL ENGINEERING","Score":null,"Total":0}
引用次数: 0

Abstract

It was established based on the analysis of the results of published works and the results obtained by the authors that there is no information on the behavior and distribution of antimony chalcogenides - Sb2S3, Sb2Se3, Sb2Te3, as well as double systems - Sb2S3-Sb2Se3, Sb2S3-Sb2Te3 and Sb2Se3-Sb2Te3 under the vacuum processing conditions for polymetallic mattes performed at 1100-1250 °C and a vacuum of 15 - 0.7 kPa. It was found based on the saturated vapor pressure values for monochalcogenides that the vapor pressure of free antimony sulfide will be 58.95 kPa at 1100 °C, i.e. the lower limit of the technological interval, which indicates its complete transfer to the vapor phase when the mattes are evacuated; the vapor pressure of free antimony selenide at 1100 °C exceeds the atmospheric pressure value (101.3 kPa), and Sb2Se3 would be completely extracted into the vapor phase in vacuum; the boiling point of liquid antimony telluride at atmospheric pressure corresponds to 971 °C, and it would be extracted into the vapor phase under the conditions of matte evacuation. The thermodynamic evaporation characteristics of antimony chalcogenides were found. It was concluded based on the location of the boundaries of the liquid and vapor phase coexistence fields that it is impossible to separate binary systems of antimony chalcogenides into separate compounds in the process of one evaporation cycle – condensation, in binary systems. Different effects of pressure reduction over melts were found. Lowering the pressure from atmospheric one to 0.7 kPa in Sb2S3-Sb2Se3 system did not change the position of the boundaries of the liquid and vapor fields (L + V) under the temperature; field width (L+V) decreases with decreasing pressure in Sb2S3-Sb2Te3 system; the field width first decreases with temperature, then increases in system Sb2Se3- Sb2Te3. At the same time, the position of the boiling curves of antimony chalcogenide solutions indicates the complete transfer of compounds into the vapor phase under the conditions of matte distillation processing (at 1100-1250 °C) at atmospheric pressure which is important for assessment of the distribution of antimony and rare metals - selenium and tellurium by processed products.
真空热处理条件下硫系锑的分布
通过对已发表文献和本人所得结果的分析,确定了在1100 ~ 1250℃、15 ~ 0.7 kPa真空条件下,对硫系锑- Sb2S3、Sb2Se3、Sb2Te3以及双体系- Sb2S3-Sb2Se3、Sb2Te3和Sb2Se3-Sb2Te3的行为和分布尚无相关资料。根据单硫族化合物的饱和蒸汽压值,在1100℃时,游离硫化锑的蒸汽压为58.95 kPa,即工艺区间的下限,表明在抽真空时,游离硫化锑完全转移到气相;游离硒化锑在1100℃时的蒸气压超过常压值(101.3 kPa), Sb2Se3将在真空中完全析出到气相中;常压下液态碲化锑的沸点为971℃,在哑光抽离条件下析出为气相。研究了硫族锑的热力学蒸发特性。根据液、气相共存场边界的位置得出结论:在二元体系中,不可能在一个蒸发循环-冷凝过程中将硫族锑二元体系分离成单独的化合物。在熔体上发现了不同的减压效果。当Sb2S3-Sb2Se3体系的压力从常压1降低到0.7 kPa时,温度下液汽边界(L + V)的位置没有发生变化;Sb2S3-Sb2Te3体系的场宽(L+V)随压力的减小而减小;在Sb2Se3- Sb2Te3体系中,场宽随温度的升高先减小后增大。同时,硫系锑溶液的沸腾曲线位置表明,在常压下(1100 ~ 1250℃)的蒸馏条件下,化合物完全转移到气相,这对评价加工产物中锑和稀有金属硒、碲的分布具有重要意义。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
求助全文
约1分钟内获得全文 求助全文
来源期刊
自引率
42.90%
发文量
55
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享
0
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术官方微信