A LITHIUM ION EXTRACTOR FROM α-DICETONE AND AN EXTRACTION SYSTEM

Claims

The present invention pertains to the technical field of lithium purification and relates to an α-diketone lithium ion extractant and an extraction system. The lithium ion extractant comprises an α-diketone compound, wherein the α-diketone compound has a general formula indicated as formula (1); wherein R1 and R2 are independently selected from H or C1-C8 alkyl, C6-C12 phenyl, C6-C12 substituted phenyl, C6-C20 aryl, C6-C20 substituted aryl, or C6-C20 heteroaryl, R1 and R2 are the same or different; and the α-diketone compound does not have the following structure: of formula (2). The α-diketone compound of the present invention can control the degree of enolization of a single molecule and perform partial enolization, which solves the problems of high alkali consumption in the extraction system, large loss of extractant dissolution, poor selectivity and low potassium ion removal rate in existing technology.