Method for extracting lithium salt from lithium-contained brine by using extraction process

A technology for extracting lithium and extraction method, which is applied in chemical instruments and methods, lithium compounds, alkali metal compounds, etc., can solve the problems of strong corrosion of equipment and difficulty in industrialization, and achieve the effects of rich sources, reduced dosage, and optimized performance
CN103523804AInactive Publication Date: 2014-01-22SHANGHAI INST OF ORGANIC CHEM CHINESE ACAD OF SCI +1
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
SHANGHAI INST OF ORGANIC CHEM CHINESE ACAD OF SCI
Publication Date
2014-01-22
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides a method for extracting lithium salt from lithium-contained brine by using an extraction process. The method comprises the step of extracting lithium by using a co-extraction agent, an extraction agent and a diluent, wherein the extraction agent is a mixture of an amide compound and a neutral phosphorus oxide compound, the amide compound has the structural formula shown in the specification, and the neutral phosphorus oxide compound has the structural formula shown in the specification. The method provided by the invention is used for further optimizing the performance of the extracted lithium and is more suitable for industrial application.
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Description

technical field

[0001] The invention relates to the technical fields of extraction chemistry and chemical industry, in particular to a method for extracting lithium salt from lithium-containing brine. Background technique

[0002] Lithium not only has important applications in the defense industry, but its importance in the national economy is also becoming increasingly evident, especially in the energy field: 6 Li and 7 Li is an important material for the fuel of future nuclear fusion reactors and nuclear fission reactions, respectively; it is also in increasing demand as a battery material. Therefore, lithium is known as "the energy metal of the 21st century". The demand for lithium continues to grow at home and abroad, so the research, development and utilization of lithium resources are imminent.

[0003] Salt lake brine is an important resource of lithium. my country is rich in salt lake brine lithium resources, and its reserves rank among the top in the world. How...

Claims

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