{"title":"从锂云母中高效提取锂、铷、铯的复杂盐焙烧浸出条件的系统优化。","authors":"Jihan Gu, Binjun Liang, Xianping Luo, Weiquan Yuan, Bin Xiao, Xuekun Tang","doi":"10.3390/molecules30102244","DOIUrl":null,"url":null,"abstract":"<p><p>A complex salt roasting-water leaching process was developed and optimized for the efficient extraction of lithium (Li), rubidium (Rb), and cesium (Cs) from lepidolite. The effects of roasting parameters (temperature, time, and complex salt composition) and leaching parameters (temperature, time, and liquid-solid ratio) were systematically investigated. Optimal roasting conditions were found to be 900 °C for 60 min with a complex salt composition of Lepidolite:Na<sub>2</sub>SO<sub>4</sub>:CaCl<sub>2</sub>:CaCO<sub>3</sub> = 1:0.5:0.3:0.05, while optimal leaching conditions were 60 °C, 60 min, and a liquid-solid ratio of 3:1, achieving the highest leaching efficiencies of 94.60%, 83.33%, and 82.95% for Li<sub>2</sub>O, Rb<sub>2</sub>O, and Cs<sub>2</sub>O, respectively. XRD and SEM characterizations confirmed the decomposition of lepidolite, formation of water-soluble phases during roasting, and selective separation of Li, Rb, and Cs from insoluble phases during leaching. The porous structure of the roasted product facilitated the dissolution of target metals. This study provides valuable insights and guidance for the efficient extraction of Li, Rb, and Cs from lepidolite, contributing to the comprehensive utilization of this resource.</p>","PeriodicalId":19041,"journal":{"name":"Molecules","volume":"30 10","pages":""},"PeriodicalIF":4.2000,"publicationDate":"2025-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12113790/pdf/","citationCount":"0","resultStr":"{\"title\":\"Systematic Optimization of Complex Salt Roasting and Leaching Conditions for Efficient Extraction of Lithium, Rubidium and Cesium from Lepidolite.\",\"authors\":\"Jihan Gu, Binjun Liang, Xianping Luo, Weiquan Yuan, Bin Xiao, Xuekun Tang\",\"doi\":\"10.3390/molecules30102244\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p><p>A complex salt roasting-water leaching process was developed and optimized for the efficient extraction of lithium (Li), rubidium (Rb), and cesium (Cs) from lepidolite. The effects of roasting parameters (temperature, time, and complex salt composition) and leaching parameters (temperature, time, and liquid-solid ratio) were systematically investigated. Optimal roasting conditions were found to be 900 °C for 60 min with a complex salt composition of Lepidolite:Na<sub>2</sub>SO<sub>4</sub>:CaCl<sub>2</sub>:CaCO<sub>3</sub> = 1:0.5:0.3:0.05, while optimal leaching conditions were 60 °C, 60 min, and a liquid-solid ratio of 3:1, achieving the highest leaching efficiencies of 94.60%, 83.33%, and 82.95% for Li<sub>2</sub>O, Rb<sub>2</sub>O, and Cs<sub>2</sub>O, respectively. XRD and SEM characterizations confirmed the decomposition of lepidolite, formation of water-soluble phases during roasting, and selective separation of Li, Rb, and Cs from insoluble phases during leaching. The porous structure of the roasted product facilitated the dissolution of target metals. This study provides valuable insights and guidance for the efficient extraction of Li, Rb, and Cs from lepidolite, contributing to the comprehensive utilization of this resource.</p>\",\"PeriodicalId\":19041,\"journal\":{\"name\":\"Molecules\",\"volume\":\"30 10\",\"pages\":\"\"},\"PeriodicalIF\":4.2000,\"publicationDate\":\"2025-05-21\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12113790/pdf/\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Molecules\",\"FirstCategoryId\":\"92\",\"ListUrlMain\":\"https://doi.org/10.3390/molecules30102244\",\"RegionNum\":2,\"RegionCategory\":\"化学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"BIOCHEMISTRY & MOLECULAR BIOLOGY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Molecules","FirstCategoryId":"92","ListUrlMain":"https://doi.org/10.3390/molecules30102244","RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"BIOCHEMISTRY & MOLECULAR BIOLOGY","Score":null,"Total":0}
Systematic Optimization of Complex Salt Roasting and Leaching Conditions for Efficient Extraction of Lithium, Rubidium and Cesium from Lepidolite.
A complex salt roasting-water leaching process was developed and optimized for the efficient extraction of lithium (Li), rubidium (Rb), and cesium (Cs) from lepidolite. The effects of roasting parameters (temperature, time, and complex salt composition) and leaching parameters (temperature, time, and liquid-solid ratio) were systematically investigated. Optimal roasting conditions were found to be 900 °C for 60 min with a complex salt composition of Lepidolite:Na2SO4:CaCl2:CaCO3 = 1:0.5:0.3:0.05, while optimal leaching conditions were 60 °C, 60 min, and a liquid-solid ratio of 3:1, achieving the highest leaching efficiencies of 94.60%, 83.33%, and 82.95% for Li2O, Rb2O, and Cs2O, respectively. XRD and SEM characterizations confirmed the decomposition of lepidolite, formation of water-soluble phases during roasting, and selective separation of Li, Rb, and Cs from insoluble phases during leaching. The porous structure of the roasted product facilitated the dissolution of target metals. This study provides valuable insights and guidance for the efficient extraction of Li, Rb, and Cs from lepidolite, contributing to the comprehensive utilization of this resource.
期刊介绍：
Molecules (ISSN 1420-3049, CODEN: MOLEFW) is an open access journal of synthetic organic chemistry and natural product chemistry. All articles are peer-reviewed and published continously upon acceptance. Molecules is published by MDPI, Basel, Switzerland. Our aim is to encourage chemists to publish as much as possible their experimental detail, particularly synthetic procedures and characterization information. There is no restriction on the length of the experimental section. In addition, availability of compound samples is published and considered as important information. Authors are encouraged to register or deposit their chemical samples through the non-profit international organization Molecular Diversity Preservation International (MDPI). Molecules has been launched in 1996 to preserve and exploit molecular diversity of both, chemical information and chemical substances.
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