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Modified beta-diketone extracting agent

A technology of extractant and diketone, which is applied in the field of β-diketone extractant and extractant, can solve the problems of reduced extraction performance, achieve the effects of improving efficiency, improving stripping efficiency, and shortening phase separation time

Active Publication Date: 2011-09-14
CHONGQING KOOPPER CHEM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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  • Modified beta-diketone extracting agent
  • Modified beta-diketone extracting agent
  • Modified beta-diketone extracting agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Add 2mL of printed circuit board alkaline etching waste solution (containing 120-130g / L copper) into a 10mL graduated centrifuge tube, and then add kerosene solution of 1-benzoyl-4-methyl-2-nonanone (V / V=50:50) 2mL. Plug and shake for 30 seconds. Static layering. Record phase separation time t=50 seconds. Then the lower aqueous phase was taken out, and the concentration of copper ions was measured by EDTA complexometric titration. Calculate the extraction efficiency E=33%. Add 70 mg of 2-benzoyl-4-methyl-3-pentanone to 2 mL of kerosene solution of 1-benzoyl-4-methyl-2-nonanone (V / V=50:50), repeat the above In the extraction test, the phase time t<10 seconds. The extraction efficiency E=43%.

[0021] Add 2 mL of copper-loaded 1-benzoyl-4-methyl-2-nonanone kerosene solution (V / V=50:50) into a 10 mL graduated centrifuge tube, and then add 2 mL of 100 g / L sulfuric acid aqueous solution. Plug and shake for 30 seconds. Static (set) stratification. Record phase separ...

Embodiment 2

[0023] Add 2mL of printed circuit board alkaline etching waste solution (containing copper 120-130g / L) into a 10mL graduated centrifuge tube, and then add kerosene solution of 3-p-isopropylbenzoyl-4-heptanone (V / V=50:50) 2mL. Plug and shake for 30 seconds. Let stand to layer. Record phase separation time t=70 seconds. Then the lower aqueous phase was taken out, and the concentration of copper ions was measured by EDTA complexometric titration. Calculate the extraction efficiency E=30%. Add 70 mg of thienylacetone to 2 mL of 3-p-isopropylbenzoyl-4-heptanone in kerosene (V / V=50:50), repeat the above extraction test, and the phase separation time t<20 seconds. Extraction efficiency E=40%.

[0024] Add 2 mL of copper-loaded 3-p-isopropylbenzoyl-4-heptanone in kerosene (V / V=50:50) into a 10 mL graduated centrifuge tube, and then add 2 mL of 100 g / L sulfuric acid aqueous solution. Plug and shake for 30 seconds. Let stand to layer. Record phase separation time t=23 seconds. ...

Embodiment 3

[0026] Add 2 mL of printed circuit board alkaline etching waste solution (containing 120-130 g / L copper) into a 10 mL graduated centrifuge tube, and then add kerosene solution of 1-benzoyl-3-ethyl-2-heptanone (V / V=50:50) 2mL. Plug and shake for 30 seconds. Let stand to layer. Record phase separation time t=60 seconds. Then the lower aqueous phase was taken out, and the concentration of copper ions was measured by EDTA complexometric titration. Calculate the extraction efficiency E=28%. Add 70 mg of 3-butyryl-4-heptanone to 2 mL of kerosene solution of 1-benzoyl-3-ethyl-2-heptanone (V / V=50:50), repeat the above extraction test, and separate the phases Time t < 15 seconds. The extraction efficiency E=38%.

[0027] Add 2 mL of copper-loaded 1-benzoyl-3-ethyl-2-heptanone in kerosene (V / V=50:50) into a 10 mL graduated centrifuge tube, and then add 2 mL of 100 g / L sulfuric acid aqueous solution. Plug and shake for 30 seconds. Let stand to layer. Record phase separation tim...

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B3/26C22B15/00
CPCY02P10/20
Inventor 汤启明徐志刚张有理丁东升邹潜曹小英
Owner CHONGQING KOOPPER CHEM IND