A promising approach for efficient and selective extraction of lithium from clay-type lithium resource: Process optimization and reaction mechanism

IF 6.9 2区环境科学与生态学 Q1 ENGINEERING, CHEMICAL

Process Safety and Environmental Protection Pub Date : 2025-01-28 DOI:10.1016/j.psep.2025.106848

Huan Qiu, Shuang Shao, Ba Zhang, Bo Li, Hua Wang, Yonggang Wei

{"title":"A promising approach for efficient and selective extraction of lithium from clay-type lithium resource: Process optimization and reaction mechanism","authors":"Huan Qiu, Shuang Shao, Ba Zhang, Bo Li, Hua Wang, Yonggang Wei","doi":"10.1016/j.psep.2025.106848","DOIUrl":null,"url":null,"abstract":"The development and utilization of clay-type lithium ore is highly important for alleviating the imbalance between the supply and demand of lithium resources in China. Here, a promising approach consisting of Na<ce:inf loc=\"post\">2</ce:inf>SO<ce:inf loc=\"post\">4</ce:inf> roasting and water leaching was proposed to extract Li from clay-type lithium ore, and efficient and selective extraction of lithium was achieved. First, mineralogical analysis indicated that the experimental lithium ore was characterized by low Mg and high Al contents and was characterized as a carbonate clay-type. Lithium was predominantly adsorbed in the interlamination of clay minerals dominated by illite. Subsequently, the effects of the process parameters on lithium extraction during Na<ce:inf loc=\"post\">2</ce:inf>SO<ce:inf loc=\"post\">4</ce:inf> roasting and water leaching were systematically investigated. The results revealed that 94.26 % of Li and less than 0.05 % of the impurities, such as Al and Fe, were leached into the solution under optimal conditions. Furthermore, based on the SEM-EDS, TOF-SIMS, FT-IR, MAS NMR, and XPS analyses of the raw ore and roasted products, the reaction mechanism was attributed to the ion exchange of Li<ce:sup loc=\"post\">+</ce:sup> with Na<ce:sup loc=\"post\">+</ce:sup>. Eventually, a technical flow that enables additive recycling is recommended. Overall, the proposed process is easily performed and environmentally friendly and has considerable economic benefits and industrial application prospects.","PeriodicalId":20743,"journal":{"name":"Process Safety and Environmental Protection","volume":"50 1","pages":""},"PeriodicalIF":6.9000,"publicationDate":"2025-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Process Safety and Environmental Protection","FirstCategoryId":"93","ListUrlMain":"https://doi.org/10.1016/j.psep.2025.106848","RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENGINEERING, CHEMICAL","Score":null,"Total":0}

引用次数: 0

Abstract

The development and utilization of clay-type lithium ore is highly important for alleviating the imbalance between the supply and demand of lithium resources in China. Here, a promising approach consisting of Na2SO4 roasting and water leaching was proposed to extract Li from clay-type lithium ore, and efficient and selective extraction of lithium was achieved. First, mineralogical analysis indicated that the experimental lithium ore was characterized by low Mg and high Al contents and was characterized as a carbonate clay-type. Lithium was predominantly adsorbed in the interlamination of clay minerals dominated by illite. Subsequently, the effects of the process parameters on lithium extraction during Na2SO4 roasting and water leaching were systematically investigated. The results revealed that 94.26 % of Li and less than 0.05 % of the impurities, such as Al and Fe, were leached into the solution under optimal conditions. Furthermore, based on the SEM-EDS, TOF-SIMS, FT-IR, MAS NMR, and XPS analyses of the raw ore and roasted products, the reaction mechanism was attributed to the ion exchange of Li+ with Na+. Eventually, a technical flow that enables additive recycling is recommended. Overall, the proposed process is easily performed and environmentally friendly and has considerable economic benefits and industrial application prospects.

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

Process Safety and Environmental Protection 环境科学-工程：化工

CiteScore

11.40

自引率

15.40%

发文量

929

审稿时长

8.0 months

期刊介绍： The Process Safety and Environmental Protection (PSEP) journal is a leading international publication that focuses on the publication of high-quality, original research papers in the field of engineering, specifically those related to the safety of industrial processes and environmental protection. The journal encourages submissions that present new developments in safety and environmental aspects, particularly those that show how research findings can be applied in process engineering design and practice. PSEP is particularly interested in research that brings fresh perspectives to established engineering principles, identifies unsolved problems, or suggests directions for future research. The journal also values contributions that push the boundaries of traditional engineering and welcomes multidisciplinary papers. PSEP's articles are abstracted and indexed by a range of databases and services, which helps to ensure that the journal's research is accessible and recognized in the academic and professional communities. These databases include ANTE, Chemical Abstracts, Chemical Hazards in Industry, Current Contents, Elsevier Engineering Information database, Pascal Francis, Web of Science, Scopus, Engineering Information Database EnCompass LIT (Elsevier), and INSPEC. This wide coverage facilitates the dissemination of the journal's content to a global audience interested in process safety and environmental engineering.