Hydrometallurgical processing of lithium, potassium, and boron for the comprehensive utilization of Da Qaidam lake brine via natural evaporation and freezing

被引：26
作者：
Bian, Shaoju [1 ,2 ,3 ]
Li, Dongdong [1 ,2 ]
Gao, Dandan [1 ]
Peng, Jiaoyu [1 ]
Dong, Yaping [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
来源：
HYDROMETALLURGY | 2017年 / 173卷
基金：
中国国家自然科学基金;
关键词：
Da Qaidam brine; Fractional crystallization; Potassium; Boron; Lithium; CRYSTALLIZATION;
D O I：
10.1016/j.hydromet.2017.07.008
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
A strategy for the hydrometallurgical processing of potassium, boron, and lithium for the comprehensive utilization of Da Qaidam lake brine based on freezing and natural evaporation was developed. This process involves five major crystallization steps: remove sulfate by crystallizing mirabilite at low temperature, deposit carnallite through natural evaporation, enrich boron and lithium by eliminating magnesium through the addition of mirabilite and further evaporation, crystallize borate by brine dilution, and crystallize lithium sulfate mono hydrate through further evaporation. In this study, potassium, boron, and lithium salt deposits with relatively high grades and yields were obtained through the controlled crystallization processes. This process provides a feasible and environmentally-friendly alternative for the comprehensive utilization of the Da Qaidam lake brine.
引用
收藏
页码：80 / 83
页数：4
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