文章信息/Info

Title:

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

文章編號:

1674-3962(2021)05-0366-08

作者:

閆光1; 2; 劉偉峰1; 2; 孫淑英3; 郭彥霞4; 劉旭光1; 2

(1.太原理工大學 新型碳材料研究院，山西 太原 030024) (2.太原理工大學 新材料界面科學與工程教育部重點實驗室，山西 太原 030024) (3.華東理工大學 國家鹽湖資源綜合利用工程技術研究中心，上海 200237) (4.山西大學 資源與環境工程研究所，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)

關鍵詞:

粉煤灰; 鋰資源; 提取; 酸/堿介質

Keywords:

fly ash;  lithium resources;  extraction;  acid/alkali mediums

分類號:

TF826.3;TQ536.4

DOI:

10.7502/j.issn.1674-3962.202003016

文獻標志碼:

A

摘要:

鋰資源作為新能源產業的基礎材料，其高效開發具有重要的戰略意義。隨著全球鋰資源需求的爆發式增長，傳統的開采和提取遠遠不能滿足市場所需。煤炭燃燒產物之一的粉煤灰中有價金屬的提取為解決鋰資源供需緊迫提供了新的思路。對于從粉煤灰中提取鋰，主要是基于煅燒—酸/堿浸取法提取鋁硅過程。鋰資源在酸/堿浸取液作用下從粉煤灰中釋放出來，形成低濃度含鋰酸/堿溶液，然后采用溶劑萃取、吸附、沉淀等方法將鋰分離富集出來。重點綜述了粉煤灰不同酸/堿介質中鋰資源的提取方法，對各種提鋰方法優缺點進行了總結和闡述，并對粉煤灰提鋰現狀、存在問題和發展方向進行了分析和討論。

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�瞚ncreasing 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.