Wuchang Zhou , Ruiqi Xie , Xiong Tong , Xian Xie , Yang Liu , Zhihui Zhao
{"title":"Extract lithium from clay-type lithium ore by mixed acid and its mechanism","authors":"Wuchang Zhou , Ruiqi Xie , Xiong Tong , Xian Xie , Yang Liu , Zhihui Zhao","doi":"10.1016/j.partic.2024.04.001","DOIUrl":null,"url":null,"abstract":"<div><p>A roasting-leaching test was carried out for the efficient utilization of clay-type lithium ore in the central region of Yunnan province. The test used the mixed acid of sulfuric acid and phosphoric acid as the leaching agent. Under the conditions of roasting temperature of 600 °C, roasting time of 1 h, liquid-solid ratio of 5:1, volume ratio of H<sub>2</sub>SO<sub>4</sub> solution to H<sub>3</sub>PO<sub>4</sub> solution of 45:5, leaching time of 2 h and leaching temperature of 80 °C, the leaching rate of lithium was as high as 97.83%. The leaching mechanism was studied by SEM, pore property analysis, XRD and XPS. It was found that the morphology of the ore changed obviously after roasting and leaching, and a certain degree of collapse and fragmentation occurred, which provided favorable spatial conditions for the leaching of lithium. The porosity, total intrusion volume and total pore area also increased after roasting and leaching, thus promoting the leaching of Li<sup>+</sup>. The results showed that chemical reaction taken placed during the roasting and leaching. The phase of the sample changed from chlorite, kaolinite and diaspore (boehmite) mainly to corundum, hematite, periclase and quartz after roasting. However, after leaching, no new phase was produced in the ore sample, and no S and P elements were found on the surface of the ore sample, indicating that the leaching mechanism of lithium might be the ion exchange between H<sup>+</sup> and Li<sup>+</sup>.</p></div>","PeriodicalId":401,"journal":{"name":"Particuology","volume":null,"pages":null},"PeriodicalIF":4.1000,"publicationDate":"2024-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Particuology","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1674200124000555","RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENGINEERING, CHEMICAL","Score":null,"Total":0}
引用次数: 0
Abstract
A roasting-leaching test was carried out for the efficient utilization of clay-type lithium ore in the central region of Yunnan province. The test used the mixed acid of sulfuric acid and phosphoric acid as the leaching agent. Under the conditions of roasting temperature of 600 °C, roasting time of 1 h, liquid-solid ratio of 5:1, volume ratio of H2SO4 solution to H3PO4 solution of 45:5, leaching time of 2 h and leaching temperature of 80 °C, the leaching rate of lithium was as high as 97.83%. The leaching mechanism was studied by SEM, pore property analysis, XRD and XPS. It was found that the morphology of the ore changed obviously after roasting and leaching, and a certain degree of collapse and fragmentation occurred, which provided favorable spatial conditions for the leaching of lithium. The porosity, total intrusion volume and total pore area also increased after roasting and leaching, thus promoting the leaching of Li+. The results showed that chemical reaction taken placed during the roasting and leaching. The phase of the sample changed from chlorite, kaolinite and diaspore (boehmite) mainly to corundum, hematite, periclase and quartz after roasting. However, after leaching, no new phase was produced in the ore sample, and no S and P elements were found on the surface of the ore sample, indicating that the leaching mechanism of lithium might be the ion exchange between H+ and Li+.
期刊介绍：
The word ‘particuology’ was coined to parallel the discipline for the science and technology of particles.
Particuology is an interdisciplinary journal that publishes frontier research articles and critical reviews on the discovery, formulation and engineering of particulate materials, processes and systems. It especially welcomes contributions utilising advanced theoretical, modelling and measurement methods to enable the discovery and creation of new particulate materials, and the manufacturing of functional particulate-based products, such as sensors.
Papers are handled by Thematic Editors who oversee contributions from specific subject fields. These fields are classified into: Particle Synthesis and Modification; Particle Characterization and Measurement; Granular Systems and Bulk Solids Technology; Fluidization and Particle-Fluid Systems; Aerosols; and Applications of Particle Technology.
Key topics concerning the creation and processing of particulates include:
-Modelling and simulation of particle formation, collective behaviour of particles and systems for particle production over a broad spectrum of length scales
-Mining of experimental data for particle synthesis and surface properties to facilitate the creation of new materials and processes
-Particle design and preparation including controlled response and sensing functionalities in formation, delivery systems and biological systems, etc.
-Experimental and computational methods for visualization and analysis of particulate system.
These topics are broadly relevant to the production of materials, pharmaceuticals and food, and to the conversion of energy resources to fuels and protection of the environment.
京公网安备 11010802042870号
京ICP备2023020795号-1
分享
求助内容：
应助结果提醒方式：
扫码关注我们
