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author:

Li, Huan (Li, Huan.) [1] | Kuang, Ge (Kuang, Ge.) [2] | Hu, Song (Hu, Song.) [3] | Guo, Hui (Guo, Hui.) [4] | Jin, Ran (Jin, Ran.) [5] | Vekariya, Rohit L. (Vekariya, Rohit L..) [6]

Indexed by:

EI

Abstract:

Lepidolite is a kind of low-grade lithium ore (3.5–4.0% Li2O) which contains more than 22% Al2O3 and 8% K2O. Removal and utilization of the Al and K will be very important for the economic extraction of lithium from this ore. In this paper, a novel method is proposed to remove Al from the leaching solution of lepidolite by adding ammonium from (NH4)2SO4. The results indicate that adding NH4+ could remove more aluminum and have a smaller loss of lithium in comparison to adding K+ for removing aluminum in the leaching solution. The Al removal reached up to 80.44% at (K+ + NH4+)/Al3+ molar ratio of 0.95, while the amount of Li+ (99.84%) still remained in the leaching solution. In addition, the phase equilibrium in the quaternary K2SO4-Al2(SO4)3-(NH4)2SO4-H2O system at 278.2 K was investigated to support the above conclusion. The results verify that the addition of ammonium could remove more Al3+ by easily forming potassium alum (KAl(SO4)2·12H2O) and ammonium alum (NH4Al(SO4)2·12H2O). © 2016, The Minerals, Metals & Materials Society.

Keyword:

Alumina Aluminum Aluminum oxide Aluminum sulfate Leaching Lithium Lithium compounds Mica Molar ratio Nitrogen compounds Ores Ore treatment Potash

Community:

  • [ 1 ] [Li, Huan]Institute of Chemical Engineering and Technology, Fuzhou University, Fuzhou; 350108, China
  • [ 2 ] [Kuang, Ge]Institute of Chemical Engineering and Technology, Fuzhou University, Fuzhou; 350108, China
  • [ 3 ] [Kuang, Ge]School of Chemical Engineering, Fuzhou University, Fuzhou; 350108, China
  • [ 4 ] [Hu, Song]Institute of Chemical Engineering and Technology, Fuzhou University, Fuzhou; 350108, China
  • [ 5 ] [Guo, Hui]School of Minerals Processing and Bioengineering, Central South University, Changsha; 410083, China
  • [ 6 ] [Jin, Ran]Institute of Chemical Engineering and Technology, Fuzhou University, Fuzhou; 350108, China
  • [ 7 ] [Vekariya, Rohit L.]School of Chemical Engineering, Fuzhou University, Fuzhou; 350108, China

Reprint 's Address:

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

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Source :

JOM

ISSN: 1047-4838

Year: 2016

Issue: 10

Volume: 68

Page: 2653-2658

1 . 8 6

JCR@2016

2 . 1 0 0

JCR@2023

ESI HC Threshold:324

JCR Journal Grade:1

CAS Journal Grade:2

Cited Count:

WoS CC Cited Count:

SCOPUS Cited Count: 14

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 1

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