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System for producing copper oxide by circuit board sulfuric acid hydrogen peroxide microetching waste solution, and production method thereof

A technology of sulfuric acid hydrogen peroxide and circuit boards, which is applied in chemical instruments and methods, copper oxide/copper hydroxide, water/sewage multi-stage treatment, etc. The effect of low cost and efficient recycling

Active Publication Date: 2009-06-03
TRIPOD WUXI ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Circuit board sulfuric acid hydrogen peroxide micro-etching waste liquid is usually discharged to the waste water plant after physical and chemical treatment, and a large amount of copper enters the sludge. Although sludge incineration will convert copper into renewable resources, the recovery efficiency and energy loss are low. It's not worth the candle.
[0003] At present, electrolysis is used to treat the waste liquid. The principle is to use electrochemistry to convert electrical energy into chemical energy, so that the copper ions in the waste liquid are converted into copper simple substances. This method consumes a lot of electric energy and does not efficiently recycle the waste liquid.

Method used

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  • System for producing copper oxide by circuit board sulfuric acid hydrogen peroxide microetching waste solution, and production method thereof
  • System for producing copper oxide by circuit board sulfuric acid hydrogen peroxide microetching waste solution, and production method thereof
  • System for producing copper oxide by circuit board sulfuric acid hydrogen peroxide microetching waste solution, and production method thereof

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Effect test

Embodiment 1

[0026] Embodiment 1: The production method of producing copper oxide from the sulfuric acid hydrogen peroxide micro-etching waste liquid of the circuit board of the present invention adopts the following process steps:

[0027] 1. First order reaction

[0028] Turn on the waste liquid pump 1-1 of the micro-etching waste liquid, and 400L of the circuit board sulfuric acid hydrogen peroxide system micro-etching waste liquid with a copper mass concentration of 35g / 1 is filtered through the cotton core filter cartridge 1-2, and then enters the primary reaction device. In the primary reactor 1-3, it is stirred by the first double-bladed mixer 1-5, and a saturated sodium carbonate solution is added at the same time. The concentration of the saturated sodium carbonate solution is 200g / l, and the pH value is adjusted to 3.5. The sulfuric acid hydrogen peroxide system is micro-etched Waste liquid and sodium carbonate saturated solution, the volume ratio between them is 1:1.5, stir for ...

Embodiment 2

[0045] Embodiment 2: The production method for producing copper oxide by recovering the micro-etching waste liquid of sulfuric acid hydrogen peroxide system of the circuit board of the present invention adopts the following process steps:

[0046] 1. Turn on the waste liquid pump 1-1 of the micro-etch waste liquid, and filter 400L of the circuit board sulfuric acid hydrogen peroxide micro-etch waste liquid with a copper mass concentration of 60g / l, filter it through the cotton core filter cartridge 1-2, and enter the primary reaction device In the primary reactor 1-3, the first double-blade mixer 1-5 is used to stir, and at the same time, a saturated solution of sodium carbonate is added. The concentration of the saturated solution of sodium carbonate is 200g / 1, and the pH value is adjusted to 4. The sulfuric acid hydrogen peroxide system is slightly Erosion waste liquid and sodium carbonate saturated solution, the volume ratio between them is 1:1.75, stir for 30 minutes, the s...

Embodiment 3

[0050] Embodiment 3: The production method for producing copper oxide by recovering the micro-etching waste liquid of sulfuric acid hydrogen peroxide system of the circuit board of the present invention adopts the following process steps:

[0051] 1. Turn on the waste liquid pump 1-1 of the micro-etch waste liquid, and filter 400L of the circuit board sulfuric acid hydrogen peroxide micro-etch waste liquid with a copper mass concentration of 10g / l, filter it through the cotton core filter cartridge 1-2, and enter the primary reaction device In the first-stage reactor 1-3, it is stirred by the first double-blade mixer 1-5, and a saturated solution of sodium carbonate is added at the same time. The concentration of the saturated solution of sodium carbonate is 200g / l, and the pH value is adjusted to 3. Erosion waste liquid and sodium carbonate saturated solution, the volume ratio between them is 1:1.25, stir for 10 minutes, the stirring speed is: 120 minutes / rotation; Waste liqui...

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Abstract

The invention relates to a system for producing copper oxide by a circuit board sulfuric acid hydrogen peroxide microetching waste solution, and a production method thereof. The invention is characterized in that a first-order reaction device, a second-order reaction device, a washing device and a third-order reaction device are included, wherein, the first-order reaction device is connected with the second-order reaction device, the second-order reaction device is connected with the washing device, and the washing device is connected with the third-order reaction device. Since the sodium hydroxide solution is added, the basic copper carbonate suspension is decomposed into high-purity copper oxide by heating under the alkaline environment, the copper ion is transformed into basic copper carbonate suspension through sodium carbonate with low cost, and the basic copper carbonate suspension is heated and directly decomposed into high-purity copper oxide. The invention has the advantages that the process equipment is simple, the operation is convenient, the automatic control is strong, the copper in the waste liquor can be transformed into copper oxide, and the purity of the copper oxide can be improved.

Description

technical field [0001] The invention relates to a system and a production method for producing copper oxide from a circuit board sulfuric acid hydrogen peroxide micro-etching waste liquid, in particular, it is applied to the recycling of the sulfuric acid hydrogen peroxide micro-etching waste liquid in the circuit board industry to produce high-purity copper oxide. Background technique [0002] Circuit board sulfuric acid hydrogen peroxide micro-etching waste liquid is usually discharged to the waste water plant after physical and chemical treatment, and a large amount of copper enters the sludge. Although sludge incineration will convert copper into renewable resources, the recovery efficiency and energy loss are low. It's not worth the candle. [0003] At present, electrolysis is used to treat the waste liquid. The principle is to use electrochemistry to convert electrical energy into chemical energy, so that the copper ions in the waste liquid are converted into copper si...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G3/02C02F9/04
Inventor 王博余祥帧周江伟王振川
Owner TRIPOD WUXI ELECTRONICS
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