机械活化对闪锌矿热氧化的影响

IF 0.9 4区 材料科学 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY
R. I. Gulyaeva, K. V. Pikulin, S. Kh. Estemirova, S. V. Sergeeva
{"title":"机械活化对闪锌矿热氧化的影响","authors":"R. I. Gulyaeva,&nbsp;K. V. Pikulin,&nbsp;S. Kh. Estemirova,&nbsp;S. V. Sergeeva","doi":"10.1134/S0020168525700037","DOIUrl":null,"url":null,"abstract":"<p>We consider the effect of mechanical activation on the particle size and strain of natural sphalerite particles and demonstrate that mechanical activation of the mineral for 20 min in a high-energy planetary mill reduces the crystallite size to 20 nm and that in this process the lattice strain in sphalerite reaches 0.73–0.85%. Thermogravimetry, calorimetry, and mass spectrometry have been used to study sphalerite oxidation processes during nonisothermal heating to a temperature of 1000°C in flowing air before and after mechanical activation. Mechanical activation of sphalerite has been shown to lead to a slight increase in the rate of sulfate formation, a decrease in the temperature and enthalpy of the thermal effects involved, and release of sulfur dioxide as a product of interaction with oxygen starting at a temperature of 150°C.</p>","PeriodicalId":585,"journal":{"name":"Inorganic Materials","volume":"60 11","pages":"1299 - 1306"},"PeriodicalIF":0.9000,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Effect of Mechanical Activation on the Thermal Oxidation of Sphalerite\",\"authors\":\"R. I. Gulyaeva,&nbsp;K. V. Pikulin,&nbsp;S. Kh. Estemirova,&nbsp;S. V. Sergeeva\",\"doi\":\"10.1134/S0020168525700037\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>We consider the effect of mechanical activation on the particle size and strain of natural sphalerite particles and demonstrate that mechanical activation of the mineral for 20 min in a high-energy planetary mill reduces the crystallite size to 20 nm and that in this process the lattice strain in sphalerite reaches 0.73–0.85%. Thermogravimetry, calorimetry, and mass spectrometry have been used to study sphalerite oxidation processes during nonisothermal heating to a temperature of 1000°C in flowing air before and after mechanical activation. Mechanical activation of sphalerite has been shown to lead to a slight increase in the rate of sulfate formation, a decrease in the temperature and enthalpy of the thermal effects involved, and release of sulfur dioxide as a product of interaction with oxygen starting at a temperature of 150°C.</p>\",\"PeriodicalId\":585,\"journal\":{\"name\":\"Inorganic Materials\",\"volume\":\"60 11\",\"pages\":\"1299 - 1306\"},\"PeriodicalIF\":0.9000,\"publicationDate\":\"2025-03-18\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Inorganic Materials\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://link.springer.com/article/10.1134/S0020168525700037\",\"RegionNum\":4,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q4\",\"JCRName\":\"MATERIALS SCIENCE, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Inorganic Materials","FirstCategoryId":"88","ListUrlMain":"https://link.springer.com/article/10.1134/S0020168525700037","RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0

摘要

研究了机械活化对天然闪锌矿颗粒粒度和应变的影响,结果表明,在高能行星磨机中机械活化20 min,闪锌矿的晶粒尺寸减小到20 nm,在此过程中闪锌矿的晶格应变达到0.73-0.85%。热重法、量热法和质谱法已被用于研究闪锌矿在机械活化前后在流动空气中非等温加热至1000℃时的氧化过程。闪锌矿的机械活化已被证明会导致硫酸盐形成速率的轻微增加,所涉及的热效应的温度和焓降低,并在150°C的温度下释放二氧化硫作为与氧相互作用的产物。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Effect of Mechanical Activation on the Thermal Oxidation of Sphalerite

Effect of Mechanical Activation on the Thermal Oxidation of Sphalerite

We consider the effect of mechanical activation on the particle size and strain of natural sphalerite particles and demonstrate that mechanical activation of the mineral for 20 min in a high-energy planetary mill reduces the crystallite size to 20 nm and that in this process the lattice strain in sphalerite reaches 0.73–0.85%. Thermogravimetry, calorimetry, and mass spectrometry have been used to study sphalerite oxidation processes during nonisothermal heating to a temperature of 1000°C in flowing air before and after mechanical activation. Mechanical activation of sphalerite has been shown to lead to a slight increase in the rate of sulfate formation, a decrease in the temperature and enthalpy of the thermal effects involved, and release of sulfur dioxide as a product of interaction with oxygen starting at a temperature of 150°C.

求助全文
通过发布文献求助,成功后即可免费获取论文全文。 去求助
来源期刊
Inorganic Materials
Inorganic Materials 工程技术-材料科学:综合
CiteScore
1.40
自引率
25.00%
发文量
80
审稿时长
3-6 weeks
期刊介绍: Inorganic Materials is a journal that publishes reviews and original articles devoted to chemistry, physics, and applications of various inorganic materials including high-purity substances and materials. The journal discusses phase equilibria, including P–T–X diagrams, and the fundamentals of inorganic materials science, which determines preparatory conditions for compounds of various compositions with specified deviations from stoichiometry. Inorganic Materials is a multidisciplinary journal covering all classes of inorganic materials. The journal welcomes manuscripts from all countries in the English or Russian language.
×
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