Selective recovery of lithium from simulated brine using different organic synergist

被引：37
作者：
Li, Huifang [1 ,2 ,3 ,4 ]
Li, Lijuan [1 ]
Peng, Xiaowu [1 ,3 ]
Ji, Lianmin [1 ]
Li, Wu [1 ,2 ]
机构：
[1] Chinese Acad Sci, Qinghai Inst Salt Lakes, Key Lab Comprehens & Highly Efficient Utilizat Sa, Xining 810008, Qinghai, Peoples R China
[2] Key Lab Salt Lake Resources Chem Qinghai Prov, Xining 810008, Qinghai, Peoples R China
[3] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
[4] Qinghai Univ, Xining 810010, Qinghai, Peoples R China
来源：
CHINESE JOURNAL OF CHEMICAL ENGINEERING | 2019年 / 27卷 / 02期
关键词：
Organic synergist; Lithium extraction; Mixed extraction system; Mechanism; TRIBUTYL-PHOSPHATE; EXTRACTION EQUILIBRIA; SOLVENT-EXTRACTION; ION BATTERIES; SALT LAKE; KEROSENE; COBALT;
D O I：
10.1016/j.cjche.2018.04.010
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
The organic synergists, including Octanol, ethyl acetate (EA), butyl acetate (BA), methyl isobutyl ketone (MIBK), diisobutyl ketone (DIBK), N,N-bis(2-ethylhexyl) acetamide (N523) and 8-hydroxylquiolate, were added to the TBP-FeCl3 extraction system to extract lithium from brine. The effects of concentration of organic synergist and total organic extractant, molar ratio of Fe/Li, phase ratio, counter-current extraction and the acidity of stripping agent on lithium extraction were investigated to optimize the extraction conditions. Under the optimize conditions, the results of counter-current extraction showed the mixed extraction system was the preponderance on the lithium extraction. Especially the separation of lithium in organic phase and aqueous phase and the separation mass ratio of Mg/Li increased greatly. An extraction mechanism was proposed based on the analysis of FT-IR spectra and Raman spectra. (C) 2018 The Chemical Industry and Engineering Society of China, and Chemical Industry Press. All rights reserved.
引用
收藏
页码：335 / 340
页数：6
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