Modified beta-diketone extracting agent

Abstract

The invention discloses a modified beta-diketone extracting agent. 0.5-30% of one or more than one beta-diketone compound is added into beta-diketone extracting agent A; the structure of the beta-diketone extracting agent A is as follows: wherein R1=H or CnH2(n+1)(n=1-14), R2=H or Cl or CnH2(n+1)(n=1-4) and R3=Ph or CnH2(n+1)(n=1-14); and the structure of the beta-diketone compound is as follows:wherein R4=Ph or CF3 or Het or CnH2(n+1)(n=1-14), R5= CnH2(n+1)(n=1-14), and R6=H or Cl or CnH(2n+1)(n=1-14). Efficiency for extracting copper from ammoniac solution by the beta-diketone extracting agent is improved, phase splitting time is shortened, and back extraction efficiency is improved.

Description

technical field [0001] The invention belongs to an extractant in the field of chemical industry, and in particular relates to a β-diketone extractant. Background technique [0002] 1-Phenyl-3-isoheptyl-1,3-propanedione has long been used to extract copper from ammoniacal solutions, but with the extension of use time, the stripping of copper becomes more and more difficult. This may be due to the formation of the corresponding ketimine when exposed to high concentrations of ammonia, especially when used at higher temperatures. The generation of ketimine may also entrain a large amount of aqueous phase in the organic phase. Therefore, it is necessary to improve its extraction performance. Adding other compounds to improve its extraction performance is one of the methods. [0003] CN101386910 has described the mixed use example of β-diketone extractant and antioxidant di-tert-butyl-p-cresol. US4350661 and EP1170389 describe examples of improving the extraction performance o...

AI Technical Summary

Problems solved by technology

[0008] When some modifiers are added to improve the stripping performance of the β-diketone extractant, the extraction performance is often reduced

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