Recovery of valuable metals from lepidolite by hydrochloric acid leaching and kinetics on dissolution of lithium

IF 4.7 1区材料科学 Q1 METALLURGY & METALLURGICAL ENGINEERING

Transactions of Nonferrous Metals Society of China Pub Date : 2026-03-01 Epub Date: 2026-04-24 DOI:10.1016/S1003-6326(25)67010-5

Song-lin LIU , Jin-lian LIU , Xiao-peng SONG , Zhou-lan YIN , Xin-hai LI , Zhi-xing WANG , Hua-jun GUO , Guo-chun YAN , Qi-yang HU , Xun-hui XIONG , Jie-xi WANG

{"title":"Recovery of valuable metals from lepidolite by hydrochloric acid leaching and kinetics on dissolution of lithium","authors":"Song-lin LIU , Jin-lian LIU , Xiao-peng SONG , Zhou-lan YIN , Xin-hai LI , Zhi-xing WANG , Hua-jun GUO , Guo-chun YAN , Qi-yang HU , Xun-hui XIONG , Jie-xi WANG","doi":"10.1016/S1003-6326(25)67010-5","DOIUrl":null,"url":null,"abstract":"<div><div>The leaching process and kinetic behavior of lepidolite in hydrochloric acid were explored systematically. The influence of leaching conditions on the leaching efficiency of valuable metals in lepidolite was investigated. Under optimized conditions, the leaching efficiencies of Li, K, Rb, Cs and Al are 92.02%, 93.31%, 88.59%, 86.75% and 81.07%, respectively. Kinetics research results show that the leaching process conforms to the shrinking core model that is under the mixed control of chemical reaction and diffusion through the solid product layer. In addition, the contribution of solid product layer diffusion to the leaching gradually expands as the temperature rises, but it is still significantly less than the contribution of chemical reaction. Cost saving in the neutralizing agent and leaching processes makes hydrochloric acid an economical leaching agent for lepidolite. Finally, the Li<sub>2</sub>CO<sub>3</sub> product with a purity of 99.89% was synthesized from the hydrochloric acid leachate.</div></div>","PeriodicalId":23191,"journal":{"name":"Transactions of Nonferrous Metals Society of China","volume":"36 3","pages":"Pages 974-987"},"PeriodicalIF":4.7000,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Transactions of Nonferrous Metals Society of China","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1003632625670105","RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2026/4/24 0:00:00","PubModel":"Epub","JCR":"Q1","JCRName":"METALLURGY & METALLURGICAL ENGINEERING","Score":null,"Total":0}

引用次数: 0

Abstract

The leaching process and kinetic behavior of lepidolite in hydrochloric acid were explored systematically. The influence of leaching conditions on the leaching efficiency of valuable metals in lepidolite was investigated. Under optimized conditions, the leaching efficiencies of Li, K, Rb, Cs and Al are 92.02%, 93.31%, 88.59%, 86.75% and 81.07%, respectively. Kinetics research results show that the leaching process conforms to the shrinking core model that is under the mixed control of chemical reaction and diffusion through the solid product layer. In addition, the contribution of solid product layer diffusion to the leaching gradually expands as the temperature rises, but it is still significantly less than the contribution of chemical reaction. Cost saving in the neutralizing agent and leaching processes makes hydrochloric acid an economical leaching agent for lepidolite. Finally, the Li₂CO₃ product with a purity of 99.89% was synthesized from the hydrochloric acid leachate.

查看原文本刊更多论文

锂云母中有价金属的盐酸浸出及锂溶解动力学研究

系统地探讨了锂云石在盐酸中的浸出过程和动力学行为。研究了浸出条件对锂云石中有价金属浸出效率的影响。在优化条件下，Li、K、Rb、Cs和Al的浸出效率分别为92.02%、93.31%、88.59%、86.75%和81.07%。动力学研究结果表明，浸出过程符合化学反应与固体产物层扩散混合控制的缩核模型。另外，随着温度的升高，固体产物层扩散对浸出的贡献逐渐扩大，但仍明显小于化学反应的贡献。在中和剂和浸出过程中节省成本，使盐酸成为一种经济的锂云石浸出剂。最后，以盐酸渗滤液为原料合成了纯度为99.89%的Li2CO3产品。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Transactions of Nonferrous Metals Society of China 工程技术-冶金工程

CiteScore

7.40

自引率

17.80%

发文量

8456

审稿时长

3.6 months

期刊介绍： The Transactions of Nonferrous Metals Society of China (Trans. Nonferrous Met. Soc. China), founded in 1991 and sponsored by The Nonferrous Metals Society of China, is published monthly now and mainly contains reports of original research which reflect the new progresses in the field of nonferrous metals science and technology, including mineral processing, extraction metallurgy, metallic materials and heat treatments, metal working, physical metallurgy, powder metallurgy, with the emphasis on fundamental science. It is the unique preeminent publication in English for scientists, engineers, under/post-graduates on the field of nonferrous metals industry. This journal is covered by many famous abstract/index systems and databases such as SCI Expanded, Ei Compendex Plus, INSPEC, CA, METADEX, AJ and JICST.