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Application and method for extracting and recovering copper by amino-contained neutral phosphine extracting agent

An extraction agent and amino-containing technology, applied in the field of copper hydrometallurgy, can solve the problems of affecting the stability of copper extraction process, complicated synthesis steps, high price and the like, and achieve the effects of high industrial application value, simple synthesis and low cost

Active Publication Date: 2018-02-09
CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the synthesis steps of hydroxyketoxime and hydroxyaldoxime extractants are cumbersome and expensive, and the market price is 140,000 / ton; a certain amount of modifier needs to be added during the extraction process to increase its extraction rate of copper and improve stripping performance
In addition, the hydroxime extractant is degraded to varying degrees during the copper extraction and stripping process, which affects the stability of the copper extraction process.

Method used

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  • Application and method for extracting and recovering copper by amino-contained neutral phosphine extracting agent
  • Application and method for extracting and recovering copper by amino-contained neutral phosphine extracting agent
  • Application and method for extracting and recovering copper by amino-contained neutral phosphine extracting agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0070] Mix 3L of 2-ethylhexylaminomethylphosphonic acid bis(2-ethylhexyl) with 7L of sulfonated kerosene to prepare an organic phase;

[0071] The copper-containing chloride salt solution is a copper chloride solution, wherein the concentration of copper is 10g / L, pH=2;

[0072] The stripping agent is water.

[0073] A 250ml mixed-clarified extraction tank was used for extraction and separation experiments.

[0074] The organic phase and the copper-containing chloride salt solution were mixed at a volume ratio of 3:2 for 5-stage countercurrent extraction to obtain a copper-loaded organic phase and a copper extraction tail solution. The copper concentration in the copper extraction tail solution was 0.005 g / L. The copper-loaded organic phase and the stripping agent are mixed at a volume ratio of 1:3 for three-stage countercurrent stripping to obtain a copper-enriched stripping solution.

[0075] The obtained back-extraction solution is precipitated, filtered, washed, dried an...

Embodiment 2

[0078] Mix 2L of 1-(2-ethylhexylamino)-1-phenylmethylphosphonic acid bis(2-ethylhexyl) with 8L of sulfonated kerosene to prepare an organic phase;

[0079] The copper-containing chloride salt is a sodium chloride solution containing copper chloride, wherein the concentration of copper is 15g / L, pH=1;

[0080] The stripping agent is 10% sodium carbonate aqueous solution.

[0081] A 250ml mixed-clarified extraction tank was used for extraction and separation experiments.

[0082] The organic phase and the copper-containing chloride salt solution were mixed at a volume ratio of 3:1 for 7-stage countercurrent extraction to obtain a copper-loaded organic phase and a copper extraction tail solution. The copper concentration in the copper extraction tail solution was 0.001g / L. Mix the copper-loaded organic phase with the stripping agent at a ratio of 3:1 by volume to carry out two-stage countercurrent stripping to obtain a copper carbonate precipitate and a copper-containing strippi...

Embodiment 3

[0086] Mix 0.1L 1-(2-ethylhexylamino)-1-methylethylphosphonic acid bis(2-ethylhexyl)ester, 0.1L TBP and 9.8L aviation kerosene to prepare an organic phase;

[0087] The copper chloride salt solution is a hydrochloric acid solution of basic copper chloride, wherein the concentration of copper is 0.01g / L, pH=2;

[0088] The stripping agent is 1.5mol / L HCl.

[0089] A 250ml mixed-clarified extraction tank was used for extraction and separation experiments.

[0090] The organic phase and the copper-containing chloride salt solution were mixed at a volume ratio of 1:20 for 10-stage countercurrent extraction to obtain a copper-loaded organic phase and a copper extraction tail solution. The copper concentration in the copper extraction tail solution was 0.001 g / L. Mix the copper-loaded organic phase with the stripping agent at a ratio of 1:10 by volume to perform 20-stage countercurrent stripping to obtain a copper-enriched stripping solution.

[0091] The obtained back-extraction ...

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Abstract

The invention relates to application and a method for extracting and recovering copper by a amino-contained neutral phosphine extracting agent expressed by the formula I. The method comprises a step of extracting and recovering copper by using the amino-contained neutral phosphine extracting agent expressed by the formula I. The amino-contained neutral phosphine extracting agent is excellent in copper extracting capacity, low in water solubility, simple in synthesis, low in cost, low in loss in recycling, capable of effectively reducing the copper recovery cost and higher in industrial application value. FORMULA.

Description

technical field [0001] The invention belongs to the field of hydrometallurgy of copper, and relates to extracting agents containing amino-containing neutral phosphine from Cu-containing 2+ The use and method of extracting and recovering copper in chloride salt solution. Background technique [0002] At present, the copper extraction agents used in my country are almost all LIX984 (hydroxyketoxime + aldoxime) from Cognis and M5640 (aldoxime + modifier) ​​from Avecia, and the demand is huge. [0003] For example, Chinese patent application CN201510074426.6 discloses a method of utilizing LIX984 to recover copper from pickling sludge pickling solution, and Chinese patent application CN200710146355.1 discloses a method of utilizing LIX984 to remove copper from nickel chloride leaching solution, And Chinese patent application CN201210588188.7 discloses a method for preparing electronic-grade high-purity copper sulfate pentahydrate by using M5640, the process is simple and effici...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B3/38C22B15/00
CPCC22B3/3844Y02P10/20
Inventor 廖伍平邝圣庭吴国龙张志峰李艳玲
Owner CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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