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Method for improving zinc extraction yield in ammonia solution

An ammonia solution and extraction rate technology, applied in the field of non-ferrous metal metallurgy, can solve problems such as low zinc extraction rate, and achieve the effect of meeting the requirements of industrial electrowinning zinc

Inactive Publication Date: 2011-05-04
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to find a method for improving the extraction effect of zinc in ammoniacal solution, which can effectively solve the problem of low zinc extraction rate of higher steric hindrance β-diketone in ammoniacal solution

Method used

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  • Method for improving zinc extraction yield in ammonia solution
  • Method for improving zinc extraction yield in ammonia solution
  • Method for improving zinc extraction yield in ammonia solution

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Example 1 Adding 2-hydroxyl-5-nonylacetophenone oxime to 4,4-dimethyl-1-dodecylphenyl-1,3-pentanedione to extract zinc from ammoniacal solution Impact

[0026] Add 2-hydroxy-5-nonylacetophenone oxime, 2- The molar ratio of hydroxy-5-nonylacetophenone oxime to β-diketone is 1:100~1:1, sulfonated kerosene or No. 260 solvent oil is selected as the diluent, and the extractant is prepared to be 30%~50% concentration solution as the organic phase. Prepare an ammoniacal solution containing zinc ions with a zinc ion concentration of 3g.L -1 ~30g.L -1 range, the total ammonia concentration is 8.5g.L -1 ~102g.L -1 , can be ammonia-ammonium chloride solution, or ammonia-ammonium sulfate solution, or ammonia-ammonium carbonate solution, and the pH value of the ammonia solution is 6.0-10. The extraction conditions are: room temperature, ratio 10:1-1:10. The extraction operation is: pour the aqueous phase and the organic phase into a 250 ml Erlenmeyer flask according to the p...

Embodiment 2

[0031] Example 2 Adding 2-hydroxy-5-nonylbenzophenone oxime to 4,4-dimethyl-1-dodecylphenyl-1,3-pentanedione to extract zinc from ammoniacal solution Effect of effect

[0032] Add 2-hydroxy-5-nonylbenzophenone oxime to 4,4-dimethyl-1-dodecylphenyl-1,3-pentanedione (abbreviated as β-diketone), 2 -The molar ratio of hydroxy-5-nonylbenzophenone oxime to β-diketone is 1:100~1:1, select sulfonated kerosene or No. 260 solvent oil as the diluent, and prepare the extractant to 30%~ The 50% concentration solution was used as the organic phase. Prepare an ammoniacal solution containing zinc ions with a zinc ion concentration of 3g.L -1 ~30g.L -1 range, the total ammonia concentration is 8.5g.L -1 ~102g.L -1 , can be ammonia-ammonium chloride solution, or ammonia-ammonium sulfate solution, or ammonia-ammonium carbonate solution, and the pH value of the ammonia solution is 6.0-10. The extraction conditions are: room temperature, ratio 10:1-1:10. The extraction operation is: pour th...

Embodiment 3

[0037] Example 3 Adding 2-hydroxyl-5-nonylbenzaldehyde oxime to 4,4-dimethyl-1-dodecylphenyl-1,3-pentanedione shows the effect of zinc extraction on ammoniacal solution influences

[0038] Add 2-hydroxy-5-nonylbenzaldehyde oxime, 2-hydroxy - The molar ratio of 5-nonylbenzaldehyde oxime to β-diketone is 1:100~1:1, select sulfonated kerosene or No. 260 solvent oil as diluent, and prepare the extractant into 30%~50% concentration solution as the organic phase. Prepare an ammoniacal solution containing zinc ions with a zinc ion concentration of 3g.L -1 ~30g.L -1 range, the total ammonia concentration is 8.5g.L -1 ~102g.L -1 , can be ammonia-ammonium chloride solution, or ammonia-ammonium sulfate solution, or ammonia-ammonium carbonate solution, and the pH value of the ammonia solution is 6.0-10. The extraction conditions are: room temperature, ratio 10:1-1:10. The extraction operation is: pour the aqueous phase and the organic phase into a 250 ml Erlenmeyer flask according...

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Abstract

The invention relates to a method for improving zinc extraction yield in ammonia solution, which is characterized in that zinc ion can be extracted from the extracted aqueous phase in the ammonia solution containing the zinc ion, so as to obtain load zinc organic phase; zinc extracting agent is higher sterical hindered beta-diketone and added with hydroxamic organic compound which is aldoxime containing 16-19 carbon atoms, or ketoxime containing 17-23 carbon atoms. The method can effectively solve the problem that the zinc extraction yield of the higher sterical hindered beta-diketone in the ammonia solution is low.

Description

technical field [0001] The invention relates to a nonferrous metal metallurgy method, in particular to a method for improving the extraction effect of zinc in ammoniacal solution. Background technique [0002] Using "ammonia leaching-extraction-electrodeposition" process to treat zinc oxide ore to obtain high-quality electrolytic zinc, the key is the selection of zinc extractant suitable for ammonia solution. The β-diketone extractant extracts metal ions from ammoniacal solution, and its biggest advantage is that the amount of co-extracted ammonia is low when extracting metal ions. However, there are the following major problems in the extraction of zinc ions by β-diketone extractants from ammoniacal solutions: (1) LIX54 produced by Cognis (Cognis) has a certain effect on the extraction of zinc in ammoniacal solutions, but LIX54 The several β-diketone mixtures in all have straight-chain structures, and they will deteriorate in contact with ammonia for a long time, and event...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B3/40C22B19/00
CPCY02P10/20
Inventor 陈启元胡慧萍付翁梁启文
Owner CENT SOUTH UNIV