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Copper resource cyclic regeneration method in manufacture process

A cyclic regeneration and resource technology, which is applied in the field of copper resource recycling and regeneration in the process, can solve the problems of easily polluting the ion selective membrane of the potion and so on.

Inactive Publication Date: 2009-02-25
TRINITY RESOURCES TECH HLDG
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Problems solved by technology

[0006] However, in the above-mentioned method, in order to restore metal copper from the waste etching solution, it is necessary to use an extraction solution that is easy to contaminate the chemical solution or an expensive ion-selective membrane, and it is also necessary to use high-temperature copper melting and very power-consuming electric purification.
If the circuit board factory needs to outsource processing, there will be problems that may arise during the process of transporting pollutants

Method used

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  • Copper resource cyclic regeneration method in manufacture process
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Embodiment Construction

[0012] In the method for recycling and regenerating copper resources in the process of the present invention, when an acidic etching waste liquid containing copper is generated in the etching process, the method of the present invention mainly uses an alkaline solution to treat the acid etching waste liquid containing copper to form a copper-containing acid etching waste liquid for electroplating. The copper electroplating solution is put into the process of electroplating copper again.

[0013] After the above method is adopted, since the metal copper is no longer reduced from the etching waste liquid, it is no longer necessary to use the extraction solution or expensive ion selective membrane which is easy to contaminate the potion, and also does not need to use high-temperature molten copper and very power-consuming equipment. Of course, there is no need to outsource treatment for electro-purification, and there are no problems that may arise in the process of transporting p...

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Abstract

The invention provides a method for cycling and regenerating copper resource in processing procedure. When acid etching waste liquid containing copper is generated during the processing procedure of etching, the acid etching waste liquid containing copper is mainly treated by alkaline solution to form electroplating solution containing copper for electroplating, and then the electroplating solution containing copper is put in the processing procedure of electroplating copper once again. As the method no longer reduces metal copper from the etching waste solution, so as to require no extracting solution which easily pollutes liquid medicine or no expensive ion selective membrane, no high-temperature copper melting and no electrical purification which consumes large amount of electricity, or no outsourcing treatment, therefore, the problems generated during delivering pollutants can be prevented.

Description

technical field [0001] The present invention relates to a method for recycling and regenerating resources, especially a method for recycling and regenerating copper resources in a manufacturing process. Background technique [0002] In general, for circuit board manufacturing, to meet environmental protection requirements, the first step is to reduce, reduce energy and raw material consumption; eliminate or reduce the use of toxic and harmful chemicals; and use less consumption and efficiency High, pollution-free or less polluting processes and equipment replace outdated processes and equipment. For example, the carcinogenic bromide flame retardant is eliminated from the copper clad laminate and replaced by a halogen-free copper clad laminate; lead-containing tin-lead alloys are banned and replaced by lead-free. In the electroplating process in the circuit board manufacturing process (ie electroless copper plating, copper electroplating, tin-lead alloy electroplating, nicke...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23F1/46C25D3/38
Inventor 江德馨
Owner TRINITY RESOURCES TECH HLDG
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