粉煤灰酸碱介质中锂资源提取研究进展-中国材料进展

文章信息/Info

Title:: Research Progress on Lithium Extraction from Acid/Alkali Mediums of Fly Ash

作者:: 闫光1; 2; 刘伟峰1; 2; 孙淑英3; 郭彦霞4; 刘旭光1; 2; (1.太原理工大学新型碳材料研究院，山西太原 030024) (2.太原理工大学新材料界面科学与工程教育部重点实验室，山西太原 030024) (3.华东理工大学国家盐湖资源综合利用工程技术研究中心，上海 200237) (4.山西大学资源与环境工程研究所，山西太原 030006)

Author(s):: YAN Guang1; 2; LIU Weifeng1; 2; SUN Shuying3; GUO Yanxia4; LIU Xuguang1; 2; (1. Institute of New Carbon Materials, Taiyuan University of Technology, Taiyuan 030024, China) (2. Key Laboratory of Interface Science and Engineering in Advanced Materials of Ministry of Education, Taiyuan University of Technology, Taiyuan 030024, China)

摘要:: 锂资源作为新能源产业的基础材料，其高效开发具有重要的战略意义。随着全球锂资源需求的爆发式增长，传统的开采和提取远远不能满足市场所需。煤炭燃烧产物之一的粉煤灰中有价金属的提取为解决锂资源供需紧迫提供了新的思路。对于从粉煤灰中提取锂，主要是基于煅烧—酸/碱浸取法提取铝硅过程。锂资源在酸/碱浸取液作用下从粉煤灰中释放出来，形成低浓度含锂酸/碱溶液，然后采用溶剂萃取、吸附、沉淀等方法将锂分离富集出来。重点综述了粉煤灰不同酸/碱介质中锂资源的提取方法，对各种提锂方法优缺点进行了总结和阐述，并对粉煤灰提锂现状、存在问题和发展方向进行了分析和讨论。

Abstract:: Lithium reserves is an essential material for the new energy industry, it is strategically significant to realize the effective extraction of lithium from its resources. With everincreasing global demand, lithium obtained by traditional mining and extraction methods is far from being enough to meet the growing market demand. Extraction of valuable metals from fly ash provides an alternate way to release the urgent supply and demand. Lithium can be released from fly ash to form low concentration lithium solution in the process of extracting aluminum and silicon by acid/alkali leaching methods, and then separated and enriched by solvent extraction, adsorption or precipitation methods. This paper reviews the lithium extraction methods from acid/alkali mediums of fly ash, and summarizes the advantages and disadvantages of the above methods. The present situations, problems and development directions are analyzed and discussed.