• Complex
  • Title
  • Keyword
  • Abstract
  • Scholars
  • Journal
  • ISSN
  • Conference
成果搜索

author:

Guo, Hui (Guo, Hui.) [1] | Kuang, Ge (Kuang, Ge.) [2] (Scholars:旷戈) | Wang, Haidong (Wang, Haidong.) [3] | Yu, Haizhao (Yu, Haizhao.) [4] | Zhao, Xiaokang (Zhao, Xiaokang.) [5]

Indexed by:

Scopus SCIE

Abstract:

An effective method using hydrofluoric and sulfuric acid was proposed to enhance the leaching of lithium from alpha-spodumene, without calcination that is subjected to 1000 degrees C for phase transformation. The thermodynamic feasibility of the reactions was firstly verified. Dissolution conditions were tested to maximize the leaching efficiency of lithium and with efficient utilization of hydrofluoric acid (HF) served as evaluation criteria. The results showed that 96% of lithium could be transferred into lixivium with an ore/HF/H2SO4 ratio of 1:3:2 (g/mL/mL), at 100 degrees C for 3 h. Due to the fact that HF molecules were the main reaction form, the dissolution behaviors were theoretically represented and investigated by dissolution in HF/H2SO4. When combined with chemical elements analyses and characterizations, the results of the dissolution behaviors revealed that -spodumene and albite were preferentially dissolved over quartz. Insoluble fluoroaluminates, such as AlF3, cryolite (Na3AlF6) and cryolithionite (Na3Li3Al2F12), were generated and might be further partially dissolved by H2SO4. Fluorosilicates, such as K2SiF6, Na2SiF6, or KNaSiF6, were also generated as a part of the insoluble residues. This work provides fundamental insight into the role of HF/H2SO4 played in the dissolution of alpha-spodumene, and sheds light on a novel and promising process to efficiently extract lithium.

Keyword:

alpha-spodumene dissolution behavior hydrofluoric acid lithium leaching sulfuric acid

Community:

  • [ 1 ] [Guo, Hui]Cent S Univ, Sch Minerals Proc & Bioengn, Changsha 410083, Hunan, Peoples R China
  • [ 2 ] [Wang, Haidong]Cent S Univ, Sch Minerals Proc & Bioengn, Changsha 410083, Hunan, Peoples R China
  • [ 3 ] [Yu, Haizhao]Cent S Univ, Sch Minerals Proc & Bioengn, Changsha 410083, Hunan, Peoples R China
  • [ 4 ] [Zhao, Xiaokang]Cent S Univ, Sch Minerals Proc & Bioengn, Changsha 410083, Hunan, Peoples R China
  • [ 5 ] [Guo, Hui]Fuzhou Univ, Coll Chem Engn, Inst Chem Technol, Fuzhou 350108, Fujian, Peoples R China
  • [ 6 ] [Kuang, Ge]Fuzhou Univ, Coll Chem Engn, Inst Chem Technol, Fuzhou 350108, Fujian, Peoples R China

Reprint 's Address:

  • 旷戈

    [Wang, Haidong]Cent S Univ, Sch Minerals Proc & Bioengn, Changsha 410083, Hunan, Peoples R China;;[Kuang, Ge]Fuzhou Univ, Coll Chem Engn, Inst Chem Technol, Fuzhou 350108, Fujian, Peoples R China

Show more details

Related Keywords:

Source :

MINERALS

ISSN: 2075-163X

Year: 2017

Issue: 11

Volume: 7

1 . 8 3 5

JCR@2017

2 . 2 0 0

JCR@2023

ESI Discipline: GEOSCIENCES;

ESI HC Threshold:177

JCR Journal Grade:2

CAS Journal Grade:3

Cited Count:

WoS CC Cited Count:

SCOPUS Cited Count: 65

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 0

Online/Total:155/10050278
Address:FZU Library(No.2 Xuyuan Road, Fuzhou, Fujian, PRC Post Code:350116) Contact Us:0591-22865326
Copyright:FZU Library Technical Support:Beijing Aegean Software Co., Ltd. 闽ICP备05005463号-1