Extraction of lithium from β-spodumene using sodium sulfate solution - Details

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Abstract：

The　anticipated　increase　in　demand　for　lithium　salt　brings　a　growing　concern　over　lithium　shortage　and　environmental　problems　in　the　industry　of　extracting　lithium　from　ores.　A　closed-loop　process　for　the　extraction　of　lithium　from　β-spodumene　(β-LiAlSi2O6)　by　leaching　with　Na2SO4,　the　by-product　of　the　lithium　precipitation　process,　was　proposed.　Two　kinds　of　additives　(CaO　and　NaOH)　were　employed　to　enhance　extraction　effect,　respectively.　The　lithium　extraction　efficiencies　were　recorded　to　be　93.30%　with　CaO　addition　and　90.70%　with　NaOH　addition,　which　have　the　more　environmentally　friendly　and　economically　viable　latent　capacity　in　comparison　to　the　currently　industrialized　sulfuric　acid　method.　By　analysis　of　leaching　residue,　the　extraction　mechanism　was　found　to　be　high-chemoselective　ion-exchange　between　Li+　in　β-LiAlSi2O6　and　Na+　in　Na2SO4　solution.　©　2018

Keyword：

Additives Aluminum compounds Autoclaves Calcium oxide Extraction Green manufacturing Ion exchange Leaching Lithium Lithium compounds Precipitation (chemical) Silicon Silicon compounds Sodium hydroxide Sodium sulfate Sulfur compounds

Community：

[ 1 ] [Kuang, Ge]Institute of Chemical Engineering and Technology, Fuzhou University, Fuzhou; 350108, China
[ 2 ] [Liu, Yu]Institute of Chemical Engineering and Technology, Fuzhou University, Fuzhou; 350108, China
[ 3 ] [Li, Huan]Institute of Chemical Engineering and Technology, Fuzhou University, Fuzhou; 350108, China
[ 4 ] [Xing, Shengzhou]Institute of Chemical Engineering and Technology, Fuzhou University, Fuzhou; 350108, China
[ 5 ] [Li, Fujie]Institute of Chemical Engineering and Technology, Fuzhou University, Fuzhou; 350108, China
[ 6 ] [Guo, Hui]Institute of Chemical Engineering and Technology, Fuzhou University, Fuzhou; 350108, China
[ 7 ] [Guo, Hui]School of Minerals Processing and Bioengineering, Central South University, Changsha; 410083, China

Reprint 's Address：

[kuang, ge]institute of chemical engineering and technology, fuzhou university, fuzhou; 350108, china

Email：

kuangge1970@sina.com

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Source ：

Hydrometallurgy

ISSN： 0304-386X

Year： 2018

Volume： 177

Page： 49-56

3 . 4 6 5

JCR@2018

4 . 8 0 0

JCR@2023

ESI HC Threshold：284

JCR Journal Grade：1

CAS Journal Grade：2

Cited Count：

WoS CC Cited Count：

SCOPUS Cited Count：

ESI Highly Cited Papers on the List： 0 Unfold All

WanFang Cited Count：

Chinese Cited Count：

30 Days PV： 4

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