Novel process for the extraction of lithium carbonate from spent lithium-containing aluminum electrolytes by leaching with aluminum nitrate and nitric acid

被引：36

作者：

Wu, Shaohua ^{[1
]}

Tao, Wenju ^{[1
]}

Zheng, Yanchen ^{[1
]}

Yang, Youjian ^{[1
]}

Yu, Jiangyu ^{[1
]}

Cui, Jingbo ^{[1
]}

Lu, Yu ^{[1
]}

Shi, Zhongning ^{[2
]}

Wang, Zhaowen ^{[1
]}

机构：

[1] Northeastern Univ, Sch Met, Key Lab Ecol Met Multimetall Mineral, Minist Educ, Shenyang 110819, Peoples R China

[2] Northeastern Univ, State Key Lab Rolling & Automat, Shenyang 110819, Peoples R China

来源：

HYDROMETALLURGY | 2020年 / 198卷 / 198期

基金：

中国国家自然科学基金;

关键词：

Lithium-containing aluminum electrolyte; Leaching; HNO3-Al(NO3)(3); Lithium carbonate; FLUORIDE REMOVAL; WATER; PRECIPITATION;

D O I：

10.1016/j.hydromet.2020.105505

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

A hydrometallurgical process was developed to extract lithium from a spent lithium-containing aluminum electrolyte, reduce the stacking of spent aluminum electrolyte, and recover the valuable elements. In this study, we extracted lithium from an electrolyte using the following three steps: 1) leaching with HNO3- Al(NO3)(3), 2) neutralizing the leachate obtained in the first step, and 3) precipitating the lithium carbonate. A lithium extraction efficiency of 88.0% could be achieved after a leaching time of 6 h, at a leaching temperature of 80 degrees C and an Al/F molar ratio of 1:6. During the process of neutralization, Al3+ and F- was precipitated as Al-2((OH)(0.46)F-0.54)(6)(H2O). The obtained Li2CO3 with a high purity of 98.8%.

引用

页数：8

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