CN104562015A - Copper recovery system adopting on-line circulation of acidic etching solution - Google Patents
Copper recovery system adopting on-line circulation of acidic etching solution Download PDFInfo
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- CN104562015A CN104562015A CN201410836577.6A CN201410836577A CN104562015A CN 104562015 A CN104562015 A CN 104562015A CN 201410836577 A CN201410836577 A CN 201410836577A CN 104562015 A CN104562015 A CN 104562015A
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- storage tanks
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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Abstract
The invention discloses a copper recovery system adopting on-line circulation of an acidic etching solution. The copper recovery system comprises electrolytic baths, a waste liquor filter device, an acidic etching production line, a waste liquor transfer tank, a copper powder separator, a regenerated solution tank and a circulating pump which are connected through pipelines, wherein an ion diaphragm is arranged in each electrolytic bath and divides the electrolytic bath into an anolyte storage tank and a catholyte storage tank, an anode electric plate and a cathode electric plate are arranged in the anolyte storage tank and the catholyte storage tank respectively, the catholyte storage tank is connected with the copper powder separator through the pipeline, waste liquor after copper powder separation is delivered to the catholyte storage tank through the circulating pump, the anolyte storage tank and the catholyte storage tank are communicated with the regenerated solution tank through the pipelines respectively, and copper ions are delivered to the acidic etching production line through the circulating pump to realize circulation. Devices and operation steps are simplified through the copper recovery system, meanwhile, systems are mutually independent, emission of poisonous gas is avoided when iridium oxide coating processing is performed on the anode electric plate, and emission of waste liquor is avoided for the whole circulation.
Description
Technical field
The invention belongs to the processing technology field of spent etching solution, be specifically related to the copper recovery system that a kind of acidic etching liquid circulates online.
Background technology
Along with the improvements of electron trade, the development of China's wiring board industry also broad-based recovery thereupon, but in the making processes of wiring board or circuit card, etch process manufactures a requisite important step in printed circuit board (PCB) (PCB) process at present, in printed circuit board (PCB) production process, usual acid or alkali etching explained hereafter circuit card, so just causes and produces a large amount of corrosion waste liquids.
The manipulation of regeneration of acidic etching waste liquid comprises chemical regeneration method and electrochemical regeneration method, chemical regeneration method, i.e. sub-liquid method of reproduction, as hydrogen peroxide method of reproduction, and sodium chlorate method of reproduction or atmospheric oxidation method of reproduction; Hydrogen peroxide method of reproduction regeneration rate is fast, and the etching solution of discharge is less, but the less stable of hydrogen peroxide, operate bad meeting and set off an explosion; Sodium chlorate method of reproduction stability is high, but the etching waste liquor of discharging is more, and the etching waste liquor of this saliferous is difficult to recycle; Although atmospheric oxidation method of reproduction is feasible, oxidation rate is slow, efficiency is low and device geometry is large especially.If adopt Extraction electrodeposition method, this method destroys the composition of acidic etching liquid, the usefulness of etching solution significantly reduces, acid waste liquid in addition after extraction still also will add a large amount of sodium chlorate solution to improve redox potential, considerably increase the volume of etching solution like this, the regenerated liquid that the method that conventional process gives up acidic etching liquid is produced cannot reach the requirement of production operation, and the defects such as efficiency is low, the production cycle is long, processing step is complicated have again a large amount of waste water and the generation of waste gas simultaneously.
Summary of the invention
The technical problem to be solved in the present invention is the copper recovery system providing a kind of acidic etching liquid to circulate online, system solves the problem problems of the prior art, can utilize waste liquid fully and can copper in efficient recovery waste liquid, has good practical value.
In order to solve the problems of the technologies described above, the present invention realizes in the following manner:
The copper recovery system that acidic etching liquid circulates online, comprise electrolyzer, waste fluid filter, acid etching production line, waste liquid transfer tank, copper powder separating machine, regeneration liquid bath and recycle pump, described acid etching production line, waste liquid transfer tank, waste fluid filter is connected by recycle pump by pipeline successively with electrolyzer, ion diaphragm is provided with in described electrolyzer, electrolyzer is divided into anolyte storage tanks and catholyte storage tanks by ion diaphragm, anode electroplax and negative electrode electroplax is respectively equipped with in anolyte storage tanks and catholyte storage tanks, described catholyte storage tanks is connected with copper powder separating machine by pipeline, to be separated after copper powder catholyte storage tanks after waste liquid is carried by recycle pump, described anolyte storage tanks and catholyte storage tanks are communicated with regeneration liquid bath by pipeline respectively, be transported to acid etching production line through recycle pump and realize circulation.
Described electrolyzer is two electrolyzers parallel with one another, and is connected with waste fluid filter by three-way solenoid valve.
Also comprise temperature control equipment, described temperature control equipment, between acid etching production line and waste liquid transfer tank, is connected respectively by pipeline.
Preferably, described anode electroplax is made up of with the iridium oxide coating be coated on titanium electroplax the electroplax of titanium material, and negative electrode electroplax is made up of the corrosion resistant metal of surface activation process.
Compared with prior art, the beneficial effect that the present invention has: the regenerated liquid that the present invention produces can significantly improve the speed of etching, cathode and anode liquid automated cycle regenerates, simplify device and operation steps, simultaneously the recovery system of regeneration system rapidly, copper and the catholyte recycle system are separate systems, are easy to control; Antianode electroplax carries out the process of iridium oxide coating, because iridium oxide coating can adsorb the chlorine of generation, avoids the discharge of toxic gas, anolyte can be made to recover its regeneration usefulness, do not have the eliminating of waste liquid.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
In figure, each mark is respectively: 1, electrolyzer, and 11, anolyte storage tanks, 12, catholyte storage tanks, 13, ion diaphragm, 2, waste fluid filter, 3, acid etching production line, 4, temperature control equipment, 5, waste liquid transfer tank, 6, copper powder separating machine, 7, regeneration liquid bath, 8, recycle pump.
Embodiment
Below in conjunction with the drawings and specific embodiments, the specific embodiment of the present invention is described in further detail.
As shown in Figure 1, the copper recovery system that acidic etching liquid circulates online, comprise electrolyzer 1, waste fluid filter 2, acid etching production line 3, temperature control equipment 4, waste liquid transfer tank 5, copper powder separating machine 6, regeneration liquid bath 7 and recycle pump 8, described acid etching production line 3, temperature control equipment 4, waste liquid transfer tank 5, waste fluid filter 2 is connected by recycle pump by pipeline successively with electrolyzer 1, ion diaphragm 13 is provided with in described electrolyzer 1, electrolyzer is divided into anolyte storage tanks 11 and catholyte storage tanks 12 by ion diaphragm, anode electroplax and negative electrode electroplax is respectively equipped with in anolyte storage tanks 11 and catholyte storage tanks 12, described anode electroplax is made up of with the iridium oxide coating be coated on titanium electroplax the electroplax of titanium material, negative electrode electroplax is made up of the corrosion resistant metal of surface activation process, described catholyte storage tanks 12 is connected with copper powder separating machine 6 by pipeline, to be separated after copper powder catholyte storage tanks after waste liquid is carried by recycle pump, described anolyte storage tanks and catholyte storage tanks are communicated with regeneration liquid bath by pipeline respectively, be transported to acid etching production line through recycle pump and realize circulation.
When using copper recovery system of the present invention, at the etching solution of acid etching production line after waste liquid transfer tank, impurity is filtered out by waste fluid filter, then the entrance of three-way solenoid valve is entered, the electrolyzer that two exit end of three-way solenoid valve are in parallel with two is respectively connected, when two exit end of three-way solenoid valve are all in the state opened time, electrolyzer is simultaneously in running order, the workload of whole system increases and efficiency improves, when breaking down when there being one in two electrolyzers or need to guarantee to keep in good repair, only need the outlet of closing corresponding three-way solenoid valve, so just make whole system still can be in running order, increase the flexible of system and safety performance.Catholyte storage tanks is connected with copper powder separating machine, by recycle pump, waste liquid is transported to negative electrode storage tanks, so just by being separated by metal-powder in catholyte or else disconnected circulation engineering, thus reaches the object of Footwall drift copper; Eventually pass the cupric ion in the catholyte of reaction and anolyte, due to concentration reduce and after high efficiency reaction cannot being carried out again, be stored in regeneration liquid bath, be transported to acid etching production line via recycle pump and complete a circulation.
The above is only embodiments of the present invention; again state, for those skilled in the art, under the premise without departing from the principles of the invention; can also carry out some improvement to the present invention, these improvement are also listed in the protection domain of the claims in the present invention.
Claims (4)
1. the copper recovery system that circulates online of acidic etching liquid, it is characterized in that: comprise electrolyzer (1), waste fluid filter (2), acid etching production line (3), waste liquid transfer tank (5), copper powder separating machine (6), regeneration liquid bath (7) and recycle pump (8), described acid etching production line (3), waste liquid transfer tank (5), waste fluid filter (2) is connected by recycle pump (8) by pipeline successively with electrolyzer (1), ion diaphragm (13) is provided with in described electrolyzer (1), electrolyzer is divided into anolyte storage tanks (11) and catholyte storage tanks (12) by ion diaphragm, anode electroplax and negative electrode electroplax is respectively equipped with in anolyte storage tanks (11) and catholyte storage tanks (12), described catholyte storage tanks (12) is connected with copper powder separating machine (6) by pipeline, catholyte storage tanks after waste liquid being carried after recycle pump after being separated copper powder, described anolyte storage tanks and catholyte storage tanks are communicated with regeneration liquid bath by pipeline respectively, be transported to acid etching production line through recycle pump and realize circulation.
2. the copper recovery system that circulates online of acidic etching liquid according to claim 1, is characterized in that: described electrolyzer (1) is two electrolyzers parallel with one another, and is connected with waste fluid filter by three-way solenoid valve.
3. the copper recovery system that circulates online of acidic etching liquid according to claim 1, it is characterized in that: also comprise temperature control equipment (4), described temperature control equipment (4) is positioned between acid etching production line (3) and waste liquid transfer tank (5), is connected respectively by pipeline.
4. the copper recovery system that circulates online of acidic etching liquid according to claim 1, it is characterized in that: described anode electroplax is made up of with the iridium oxide coating be coated on titanium electroplax the electroplax of titanium material, and negative electrode electroplax is made up of the corrosion resistant metal of surface activation process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410836577.6A CN104562015A (en) | 2014-12-29 | 2014-12-29 | Copper recovery system adopting on-line circulation of acidic etching solution |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410836577.6A CN104562015A (en) | 2014-12-29 | 2014-12-29 | Copper recovery system adopting on-line circulation of acidic etching solution |
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| CN104562015A true CN104562015A (en) | 2015-04-29 |
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| CN201410836577.6A Pending CN104562015A (en) | 2014-12-29 | 2014-12-29 | Copper recovery system adopting on-line circulation of acidic etching solution |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105177582A (en) * | 2015-09-09 | 2015-12-23 | 成都虹华环保科技股份有限公司 | System for circulating and regenerating waste acidic etching solutions by re-circulating regeneration solutions |
| CN106480473A (en) * | 2015-08-31 | 2017-03-08 | 东莞市锦卫水处理设备有限公司 | A kind of method of electrolytic acid copper chloride |
| CN108588757A (en) * | 2018-07-09 | 2018-09-28 | 南京舜业环保科技有限公司 | A kind of copper recovery system and recovery method of sulfuric acid copper etchant solution |
| CN108914128A (en) * | 2018-07-09 | 2018-11-30 | 南京舜业环保科技有限公司 | A kind of the regeneration cycle system and method for recycling of sulfuric acid copper etchant solution |
-
2014
- 2014-12-29 CN CN201410836577.6A patent/CN104562015A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106480473A (en) * | 2015-08-31 | 2017-03-08 | 东莞市锦卫水处理设备有限公司 | A kind of method of electrolytic acid copper chloride |
| CN106480473B (en) * | 2015-08-31 | 2019-08-13 | 广东德同环保科技有限公司 | A kind of method of electrolytic acid copper chloride |
| CN105177582A (en) * | 2015-09-09 | 2015-12-23 | 成都虹华环保科技股份有限公司 | System for circulating and regenerating waste acidic etching solutions by re-circulating regeneration solutions |
| CN108588757A (en) * | 2018-07-09 | 2018-09-28 | 南京舜业环保科技有限公司 | A kind of copper recovery system and recovery method of sulfuric acid copper etchant solution |
| CN108914128A (en) * | 2018-07-09 | 2018-11-30 | 南京舜业环保科技有限公司 | A kind of the regeneration cycle system and method for recycling of sulfuric acid copper etchant solution |
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Application publication date: 20150429 |