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Preparation method of electroplating copper sulfate

A copper sulfate, electroplating-grade technology, applied in the preparation of copper sulfate and copper compounds, can solve the problems of high processing cost and environmental pollution, and achieve the effects of high economic efficiency, reduced production cost and less water content

Active Publication Date: 2018-05-04
XIAMEN RUNNER IND CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In surface treatment electrodeposition, a large amount of acid copper process is used, and a large amount of copper salt wastewater is generated every day, which pollutes the environment and has high treatment costs.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] The preparation method of electroplating grade copper sulfate of the present invention, its concrete steps are as follows:

[0041] (1) Collect acid copper wastewater by separating and separating.

[0042] (2) Adsorb the organic matter such as brightener and wetting agent in the acid copper wastewater through the chelating anion resin.

[0043] (3) Adsorb copper ions with selective copper ion cation resin until the adsorption of selective copper ion cation resin is in a saturated state.

[0044] (4) desorb and regenerate the selective copper ion cation resin in step (3) with 5% (v / v) strong acid to obtain a concentrated copper sulfate solution; wherein, in the concentrated copper sulfate solution, Cu 2+ The concentration is 35g / L, and the pH value is 1.0.

[0045] (5) Add 1ml / L hydrogen peroxide to the concentrated copper sulfate solution obtained in step (4), heat up to 50°C, keep constant temperature, and blow air for 4 hours.

[0046] (6) Cool the solution in step...

Embodiment 2

[0062] The preparation method of electroplating grade copper sulfate of the present invention, its concrete steps are as follows:

[0063] (1) Collect acid copper wastewater by separating and separating.

[0064] (2) Adsorb the organic matter such as brightener and wetting agent in the acid copper wastewater through the chelating anion resin.

[0065] (3) Adsorb copper ions with selective copper ion cation resin until the adsorption of selective copper ion cation resin is in a saturated state.

[0066] (4) Use 20% (v / v) strong acid to desorb and regenerate the selective copper ion cation resin in step (3) to obtain a concentrated copper sulfate solution; wherein, in the concentrated copper sulfate solution, Cu 2+ The concentration is 40g / L, and the pH value is 1.5.

[0067] (5) Add 10ml / L hydrogen peroxide to the concentrated copper sulfate solution obtained in step (4), heat up to 70°C, keep constant temperature, and blast for 6 hours.

[0068] (6) Cool the solution in step ...

Embodiment 3

[0084] The preparation method of electroplating grade copper sulfate of the present invention, its concrete steps are as follows:

[0085] (1) Collect acid copper wastewater by separating and separating.

[0086] (2) Adsorb the organic matter such as brightener and wetting agent in the acid copper wastewater through the chelating anion resin.

[0087] (3) Adsorb copper ions with selective copper ion cation resin until the adsorption of selective copper ion cation resin is in a saturated state.

[0088] (4) Use 15% (v / v) strong acid to desorb and regenerate the selective copper ion cation resin in step (3) to obtain a concentrated copper sulfate solution; wherein, in the concentrated copper sulfate solution, Cu 2+ The concentration is 45g / L, and the pH value is 1.5.

[0089] (5) Add 5ml / L hydrogen peroxide to the concentrated copper sulfate solution obtained in step (4), heat it up to 60°C, keep constant temperature, and blow air for 5 hours.

[0090] (6) Cool the solution i...

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PUM

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Abstract

The invention provides a preparation method of electroplating copper sulfate. The method comprises the following steps: taking acid copper waste water as a raw material, adsorbing organic matters in the acid copper waste water by chelating resin, adopting selective copper cation resin to adsorb copper ions in the acid copper waste water, adding strong acid to perform desorption for the selective copper cation resin, regenerating to obtain a concentrated copper sulfate solution, adding hydrogen peroxide into the concentrated copper sulfate solution, successively performing weak electrolysis, filtering, pH value adjustment and crystallization for the concentrated copper sulfate solution with hydrogen peroxide, and obtaining copper sulfate crystals. By adopting the preparation method of the electroplating copper sulfate of the invention, the prepared copper sulfate crystals are exquisite, the water content is little, the purity is high and can reach 99.9 percent or higher, the waste wateremission and treatment cost can be reduced, and environmental protection and emission reduction can be realized.

Description

technical field [0001] The invention relates to the field of copper salt production technology, in particular to a method for recovering acid copper wastewater to prepare high-purity electroplating-grade copper sulfate. Background technique [0002] In surface treatment electrodeposition, a large amount of acid copper process is used, and a large amount of copper salt wastewater is generated every day, which pollutes the environment and has high treatment costs. [0003] Therefore, it is necessary to provide a new technical solution. Contents of the invention [0004] In order to overcome the above-mentioned defects in the prior art, the present invention provides a method for preparing electroplating-grade copper sulfate, which can reduce wastewater discharge and treatment costs, and is environmentally friendly and emission-reduction. [0005] In order to achieve the above object, a kind of preparation method of electroplating grade copper sulfate of the present inventio...

Claims

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Application Information

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IPC IPC(8): C01G3/10
CPCC01G3/003C01G3/10C01P2006/80
Inventor 傅盈盈林志敏乔永亮蒋义锋
Owner XIAMEN RUNNER IND CORP
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