Theoretical and experimental study on high-entropy flotation of micro-fine cassiterite

IF 11.7 1区工程技术 Q1 MINING & MINERAL PROCESSING

International Journal of Mining Science and Technology Pub Date : 2025-01-01 DOI:10.1016/j.ijmst.2024.12.012

Shuming Wen, Yongchao Miao, Yanyu Tang, Zhengyong Song, Qicheng Feng

{"title":"Theoretical and experimental study on high-entropy flotation of micro-fine cassiterite","authors":"Shuming Wen, Yongchao Miao, Yanyu Tang, Zhengyong Song, Qicheng Feng","doi":"10.1016/j.ijmst.2024.12.012","DOIUrl":null,"url":null,"abstract":"<div><div>Tin is a critical metal for various industries, making its recovery from low-grade cassiterite ores crucial. This study aimed to optimize the flotation recovery of cassiterite using multi-component collector systems. Several collectors were initially selected through micro-flotation tests, leading to the identification of optimal proportions for a four-component collector system (SHA-OHA-SPA-DBIA in a 4:3:2:1 ratio). Molecular dynamics simulations and surface tension tests were used to investigate the micellar behavior of these collectors in aqueous solution. The adsorption characteristics were quantified using microcalorimetry, enabling the determination of collection entropy and changes in Gibbs free energy. The four-component collector system showed the highest entropy change and the most favorable Gibbs free energy, leading to a cassiterite recovery of above 90% at a concentration of 8.0×10<sup>−5</sup> mol/L. Various analytical techniques were employed to systematically characterize the adsorption mechanism. The findings revealed a positive correlation between the adsorption products formed by the multi-component collectors on the cassiterite surface and the entropy changes. Industrial-scale testing of the high-entropy collector system produced a tin concentrate with an Sn grade of 6.17% and an Sn recovery of 82.43%, demonstrating its substantial potential for practical applications in cassiterite flotation.</div></div>","PeriodicalId":48625,"journal":{"name":"International Journal of Mining Science and Technology","volume":"35 1","pages":"Pages 19-39"},"PeriodicalIF":11.7000,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"International Journal of Mining Science and Technology","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S2095268625000047","RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"MINING & MINERAL PROCESSING","Score":null,"Total":0}

引用次数: 0

Abstract

Tin is a critical metal for various industries, making its recovery from low-grade cassiterite ores crucial. This study aimed to optimize the flotation recovery of cassiterite using multi-component collector systems. Several collectors were initially selected through micro-flotation tests, leading to the identification of optimal proportions for a four-component collector system (SHA-OHA-SPA-DBIA in a 4:3:2:1 ratio). Molecular dynamics simulations and surface tension tests were used to investigate the micellar behavior of these collectors in aqueous solution. The adsorption characteristics were quantified using microcalorimetry, enabling the determination of collection entropy and changes in Gibbs free energy. The four-component collector system showed the highest entropy change and the most favorable Gibbs free energy, leading to a cassiterite recovery of above 90% at a concentration of 8.0×10⁻⁵ mol/L. Various analytical techniques were employed to systematically characterize the adsorption mechanism. The findings revealed a positive correlation between the adsorption products formed by the multi-component collectors on the cassiterite surface and the entropy changes. Industrial-scale testing of the high-entropy collector system produced a tin concentrate with an Sn grade of 6.17% and an Sn recovery of 82.43%, demonstrating its substantial potential for practical applications in cassiterite flotation.

查看原文本刊更多论文

求助全文

约1分钟内获得全文求助全文

来源期刊

International Journal of Mining Science and Technology Earth and Planetary Sciences-Geotechnical Engineering and Engineering Geology

CiteScore

19.10

自引率

11.90%

发文量

2541

审稿时长

44 days

期刊介绍： The International Journal of Mining Science and Technology, founded in 1990 as the Journal of China University of Mining and Technology, is a monthly English-language journal. It publishes original research papers and high-quality reviews that explore the latest advancements in theories, methodologies, and applications within the realm of mining sciences and technologies. The journal serves as an international exchange forum for readers and authors worldwide involved in mining sciences and technologies. All papers undergo a peer-review process and meticulous editing by specialists and authorities, with the entire submission-to-publication process conducted electronically.