CN109628935A - A kind of the alkaline etching liquid circular regeneration processing system and regeneration method of efficient electrolysis copper - Google Patents
A kind of the alkaline etching liquid circular regeneration processing system and regeneration method of efficient electrolysis copper Download PDFInfo
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- CN109628935A CN109628935A CN201910040826.3A CN201910040826A CN109628935A CN 109628935 A CN109628935 A CN 109628935A CN 201910040826 A CN201910040826 A CN 201910040826A CN 109628935 A CN109628935 A CN 109628935A
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- Prior art keywords
- alkaline etching
- etching liquid
- cathode
- storage tank
- copper
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F1/00—Etching metallic material by chemical means
- C23F1/10—Etching compositions
- C23F1/14—Aqueous compositions
- C23F1/32—Alkaline compositions
- C23F1/34—Alkaline compositions for etching copper or alloys thereof
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F1/00—Etching metallic material by chemical means
- C23F1/46—Regeneration of etching compositions
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
- C25C1/00—Electrolytic production, recovery or refining of metals by electrolysis of solutions
- C25C1/12—Electrolytic production, recovery or refining of metals by electrolysis of solutions of copper
-
- 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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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Electrochemistry (AREA)
- Electrolytic Production Of Metals (AREA)
- ing And Chemical Polishing (AREA)
Abstract
The invention discloses a kind of alkaline etching liquid circular regeneration processing systems of efficient electrolysis copper, it includes groove body (1), spent etching solution storage tank (2), ammonia collecting tank (3), water pump (4), power supply (5), the cover board (6) being set at the top of groove body (1), through-hole (7) are provided on the side wall of the groove body (1), cathode bar (8) and anode stub (9) are provided on the cover board (6), the lower end of cathode bar (8) and anode stub (9) is inserted into groove body (1), the upper end of cathode bar (8) and anode stub (9) is connect through cover board (6) and respectively with the anode and cathode of power supply (5) through conducting wire, collet (10) are provided on the inner wall of the spent etching solution storage tank (2).The beneficial effects of the present invention are: it is compact-sized, improve cathode copper quality, improve the electrolytic efficiency, easy to operate of cathode copper.
Description
Technical field
The present invention relates to a kind of alkaline etching liquid circular regeneration processing system of efficient electrolysis copper and regeneration methods.
Background technique
Alkaline etching liquid is suitable for graphic plating metal resist layer, such as plated with gold, nickel, leypewter, leypewter and tin
Printed board etching.Alkaline etching liquid has the following characteristics that 1, etch-rate is fast, and lateral erosion is small, and molten copper ability is high, etch-rate
It is easy to control.2, etching solution can be recycled with cyclic regeneration, reduce etching cost.During it is easy after alkaline etching liquid use
Containing copper ion, therefore copper ion is electrolyzed to produce elemental copper by the mode for generalling use plating, and elemental copper can be used as production PCB again
The substrate of plate uses, to reduce cost.However, after alkaline etching liquid is reacted with the layers of copper on pcb board, alkalinity decline is caused
It cannot normally be electrolysed, it is therefore desirable to ammonium hydroxide is supplemented into alkaline etching liquid, it is ensured that it has alkalinity.However, excess of ammonia is added
After water, elemental copper after electrolysis production, and eroded by extra ammonium hydroxide, cause the yield for the elemental copper being electrolysed out to decline.
Summary of the invention
The purpose of the present invention is to overcome the shortcomings of the existing technology, provide it is a kind of it is compact-sized, improve cathode copper quality, mention
The electrolytic efficiency of high cathode copper, efficient alkaline etching liquid indirect regeneration easy to operate and regeneration method.
The purpose of the present invention is achieved through the following technical solutions: a kind of efficient alkaline etching liquid circular regeneration system
System, it includes groove body, spent etching solution storage tank, ammonia collecting tank, water pump, power supply, the cover board being set at the top of groove body, the groove body
Side wall on be provided with through-hole, be provided with cathode bar and anode stub on the cover board, the lower end of cathode bar and anode stub is stretched
Entering in groove body, the upper end of cathode bar and anode stub is connect through cover board and respectively with the anode and cathode of power supply through conducting wire,
It is provided with collet on the inner wall of the spent etching solution storage tank, steam is provided on the side wall of spent etching solution storage tank and enters pipe, steam
Be connected into pipe with collet, be provided with inlet and liquid outlet on the side wall of the spent etching solution storage tank, the water sucking mouth of water pump with
Liquid outlet is connected through pipe clamp, and the discharge outlet and through-hole of water pump are connected through pipe clamp, is provided with gas outlet at the top of spent etching solution storage tank,
Gas outlet is connected to through pipeline with ammonia collecting tank.
The bottom of the spent etching solution storage tank is provided with supporting leg.
The inlet is located at the top of liquid outlet.
The ammonia collecting tank is located at the surface of spent etching solution storage tank.
There are two electrode bar mounting bases for setting on the cover board, and electrode bar mounting base includes the step being opened on cover board
The shoulder of hole, T-type plastic part, metal bar and baffle ring, the T-type plastic part is matched with the step of stepped hole, in T-type plastic part
It is provided with hollow hole, interference fit has metal bar in hollow hole, and the bottom of two metal bars is respectively welded cathode bar and anode
Stick, the upper end of two metal bars are electrically connected through conducting wire with the anode and cathode of power supply respectively, and the baffle ring is welded on metal bar
On, and baffle ring is supported on T-type plastic part top surface.
The alkaline etching liquid circulation regeneration method of the system high efficiency cathode copper, it the following steps are included:
S1, the useless alkaline etching liquid of etched pcb board is pumped into spent etching solution storage tank through inlet, it is a certain amount of when being pumped into
Afterwards, stop being pumped into spent etching solution；
S2, worker enter to steam is passed through high-temperature steam in pipe, high-temperature steam keeps collet heated after entering collet, and collet reheats
Useless alkaline etching liquid in spent etching solution storage tank resolves into ammonia and water, ammonia warp after ammonium hydroxide in useless alkaline etching liquid is heated
Gas outlet enters in ammonia collecting tank and collects；
S3, after heating a period of time, worker, which stops entering to steam, is passed through high-temperature steam in pipe, subsequent worker opens water pump,
Water pump extracts the alkaline etching liquid in ammonia collecting tank out, and the alkaline etching liquid of extraction sequentially enters through liquid outlet, water pump, through-hole
Into groove body；Last worker opens power supply, and electric field is formed between cathode bar and anode stub, and the copper ion in alkaline etching liquid is to yin
The movement of pole stick direction, copper ion obtain it is electric after become elemental copper and be attached on cathode bar, realize the recycling of copper；
S4, the ammonia collected in ammonia collecting tank is passed into the electrolyte after being electrolysed in groove body, ammonia is mixed with electrolyte
Available alkaline etching liquid, alkaline etching liquid can continue investment etching pcb board again and use again afterwards.
The invention has the following advantages that structure of the invention is compact, improves cathode copper quality, the electrolysis effect of raising cathode copper
It is rate, easy to operate.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the invention；
In figure, 1- groove body, 2- spent etching solution storage tank, 3- ammonia collecting tank, 4- water pump, 5- power supply, 6- cover board, 7- through-hole, 8- yin
Pole stick, 9- anode stub, 10- collet, 11- steam enter pipe, 12- inlet, 13- liquid outlet, the gas outlet 14-, 16- stepped hole,
17- T-type plastic part, 18- metal bar, 19- baffle ring.
Specific embodiment
The present invention will be further described with reference to the accompanying drawing, and protection scope of the present invention is not limited to as described below:
As shown in Figure 1, a kind of alkaline etching liquid circular regeneration processing system of efficient electrolysis copper, it includes groove body 1, spent etching solution
Storage tank 2, ammonia collecting tank 3, water pump 4, power supply 5, the cover board 6 for being set to the top of groove body 1 are provided on the side wall of the groove body 1
Through-hole 7, is provided with cathode bar 8 and anode stub 9 on the cover board 6, and the lower end of cathode bar 8 and anode stub 9 is inserted into groove body 1
In, the upper end of cathode bar 8 and anode stub 9 is connect through cover board 6 and respectively with the anode and cathode of power supply 5 through conducting wire, described
It is provided with collet 10 on the inner wall of spent etching solution storage tank 2, steam is provided on the side wall of spent etching solution storage tank 2 and enters pipe 11, steams
Vapour enters pipe 11 and is connected to collet 10, is provided with inlet 12 and liquid outlet 13, feed liquor on the side wall of the spent etching solution storage tank 2
Mouth 12 is located at the top of liquid outlet 13, and the water sucking mouth of water pump 4 is connect with liquid outlet 13 through pipe clamp, the discharge outlet and through-hole 7 of water pump 4
It being connected through pipe clamp, the top of spent etching solution storage tank 2 is provided with gas outlet 14, and gas outlet 14 is connected to through pipeline with ammonia collecting tank 3,
Ammonia collecting tank 3 is located at the surface of spent etching solution storage tank 2.
As shown in Figure 1, the bottom of the spent etching solution storage tank 2 is provided with supporting leg.On the cover board 6 there are two settings
Electrode bar mounting base, electrode bar mounting base include the stepped hole 16 being opened on cover board 6, T-type plastic part 17, metal bar 18 and gear
The shoulder of ring 19, the T-type plastic part 17 is matched with the step of stepped hole 16, is provided with hollow hole in T-type plastic part 17, in
Interference fit has metal bar 18 in emptying aperture, and the bottom of two metal bars 18 is respectively welded cathode bar 8 and anode stub 9, two gold
The upper end for belonging to stick 18 is electrically connected through conducting wire with the anode and cathode of power supply 5 respectively, and the baffle ring 19 is welded on metal bar 18,
And baffle ring 19 is supported on 17 top surface of T-type plastic part.
The alkaline etching liquid circulation regeneration method of the system high efficiency cathode copper, it the following steps are included:
S1, the useless alkaline etching liquid of etched pcb board is pumped into spent etching solution storage tank 2 through inlet 12, it is certain when being pumped into
After amount, stopping is pumped into spent etching solution；
S2, worker enter in pipe 11 to steam is passed through high-temperature steam, and high-temperature steam keeps collet 10 heated after entering collet 10, collet
10 reheat the useless alkaline etching liquid in spent etching solution storage tanks 2, resolved into after the ammonium hydroxide in useless alkaline etching liquid is heated ammonia and
Water, ammonia are entered in ammonia collecting tank 3 through gas outlet 14 and are collected；
S3, after heating a period of time, worker, which stops entering to steam in pipe 11, is passed through high-temperature steam, and subsequent worker opens water pump
4, water pump 4 by ammonia collecting tank 3 alkaline etching liquid extract out, the alkaline etching liquid of extraction sequentially through liquid outlet 13, water pump 4,
Through-hole 7 enters in groove body 1；Last worker opens power supply 5, and electric field, alkaline etching liquid are formed between cathode bar 8 and anode stub 9
In copper ion moved to 8 direction of cathode bar, copper ion obtain it is electric after become elemental copper and be attached on cathode bar 8, realize copper
Recycling；Due in step s 2 in advance getting rid of the ammonia in useless alkaline etching liquid, avoid in cathode copper process
In, ammonium hydroxide erodes the elemental copper of precipitation, improves cathode copper recovery efficiency, improves the yield of elemental copper；
S4, the ammonia collected in ammonia collecting tank 3 is passed into the electrolyte after being electrolysed in groove body 1, ammonia and electrolyte are mixed
After conjunction again available alkaline etching liquid, alkaline etching liquid can continue again investment etching pcb board use, to re-use ammonia
Gas and electrolyte, turn waste into wealth, and save manufacturing cost.
The above, only presently preferred embodiments of the present invention not do limitation in any form to the present invention.It is any ripe
Those skilled in the art is known, without departing from the scope of the technical proposal of the invention, all using technology contents described above
Many possible changes and modifications or equivalent example modified to equivalent change are made to technical solution of the present invention.Therefore, all
It is the content without departing from technical solution of the present invention, any change modification made to the above embodiment of technology according to the present invention,
Equivalent variations and modification belong to the protection scope of the technical program.
Claims (6)
1. a kind of alkaline etching liquid circular regeneration processing system of efficient electrolysis copper, it is characterised in that: it includes groove body (1), gives up
Etch liquid storage tank (2), ammonia collecting tank (3), water pump (4), power supply (5), the cover board (6) being set at the top of groove body (1), the slot
It is provided on the side wall of body (1) through-hole (7), cathode bar (8) and anode stub (9), cathode bar (8) is provided on the cover board (6)
It is inserted into groove body (1) with the lower end of anode stub (9), cover board (6) are run through in the upper end of cathode bar (8) and anode stub (9)
And connect respectively with the anode and cathode of power supply (5) through conducting wire, collet is provided on the inner wall of the spent etching solution storage tank (2)
(10), steam is provided on the side wall of spent etching solution storage tank (2) to enter pipe (11), steam enters pipe (11) and collet (10) even
It is logical, be provided with inlet (12) and liquid outlet (13) on the side wall of the spent etching solution storage tank (2), the water sucking mouth of water pump (4) and
Liquid outlet (13) is connected through pipe clamp, and the discharge outlet of water pump (4) is connect with through-hole (7) through pipe clamp, the top of spent etching solution storage tank (2)
It is provided with gas outlet (14), gas outlet (14) are connected to through pipeline with ammonia collecting tank (3).
2. a kind of alkaline etching liquid circular regeneration processing system of efficient electrolysis copper according to claim 1, feature exist
In: the bottom of the spent etching solution storage tank (2) is provided with supporting leg.
3. a kind of alkaline etching liquid circular regeneration processing system of efficient electrolysis copper according to claim 1, feature exist
In: the inlet (12) is located at the top of liquid outlet (13).
4. a kind of alkaline etching liquid circular regeneration processing system of efficient electrolysis copper according to claim 1, feature exist
In: the ammonia collecting tank (3) is located at the surface of spent etching solution storage tank (2).
5. a kind of alkaline etching liquid circular regeneration processing system of efficient electrolysis copper according to claim 1, feature exist
In: there are two electrode bar mounting base, electrode bar mounting base includes the step being opened on cover board (6) for setting on the cover board (6)
Hole (16), T-type plastic part (17), metal bar (18) and baffle ring (19), shoulder and stepped hole (16) of the T-type plastic part (17)
Step match, is provided with hollow hole in T-type plastic part (17), being interference fitted in hollow hole has metal bar (18), two gold
The bottom for belonging to stick (18) is respectively welded cathode bar (8) and anode stub (9), and the upper end of two metal bars (18) is respectively through conducting wire
It is electrically connected with the anode and cathode of power supply (5), the baffle ring (19) is welded on metal bar (18), and baffle ring (19) is supported in T
On shape materials and parts (17) top surface.
6. the alkaline etching liquid circulation regeneration method of system high efficiency cathode copper described according to claim 1 ~ any one of 5,
Be characterized in that: it the following steps are included:
S1, the useless alkaline etching liquid of etched pcb board is pumped into spent etching solution storage tank (2) through inlet (12), when being pumped into
After a certain amount of, stopping is pumped into spent etching solution；
S2, worker enter in pipe (11) to steam is passed through high-temperature steam, high-temperature steam enter after collet (10) make collet (10) by
Heat, collet (10) reheat the useless alkaline etching liquid in spent etching solution storage tank (2), divide after the ammonium hydroxide in the alkaline etching liquid that gives up is heated
Solution is entered in ammonia collecting tank (3) through gas outlet (14) and is collected at ammonia and water, ammonia；
S3, after heating a period of time, worker, which stops entering to steam in pipe (11), is passed through high-temperature steam, and subsequent worker opens water
It pumps (4), water pump (4) extracts the alkaline etching liquid in ammonia collecting tank (3) out, and the alkaline etching liquid of extraction is sequentially through liquid outlet
(13), water pump (4), through-hole (7) enter in groove body (1)；Last worker opens power supply (5), cathode bar (8) and anode stub (9)
Between form electric field, the copper ion in alkaline etching liquid is moved to cathode bar (8) direction, copper ion obtain it is electric after become elemental copper simultaneously
It is attached on cathode bar (8), realizes the recycling of copper；
S4, the ammonia collected in ammonia collecting tank (3) is passed into the electrolyte in groove body (1) after electrolysis, ammonia and electrolysis
Available alkaline etching liquid, alkaline etching liquid can continue investment etching pcb board again and use again after liquid mixing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910040826.3A CN109628935A (en) | 2019-01-16 | 2019-01-16 | A kind of the alkaline etching liquid circular regeneration processing system and regeneration method of efficient electrolysis copper |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910040826.3A CN109628935A (en) | 2019-01-16 | 2019-01-16 | A kind of the alkaline etching liquid circular regeneration processing system and regeneration method of efficient electrolysis copper |
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| CN109628935A true CN109628935A (en) | 2019-04-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910040826.3A Pending CN109628935A (en) | 2019-01-16 | 2019-01-16 | A kind of the alkaline etching liquid circular regeneration processing system and regeneration method of efficient electrolysis copper |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110042425A (en) * | 2019-04-23 | 2019-07-23 | 博罗县华盈科技有限公司 | A kind of heavy process for copper of alkaline etching waste liquid for producing direct electrowinning |
| CN110113884A (en) * | 2019-05-14 | 2019-08-09 | 四川海英电子科技有限公司 | The fast-etching device and method of new-energy automobile printed circuit board |
| CN112522708A (en) * | 2020-12-21 | 2021-03-19 | 泰兴冶炼厂有限公司 | Alkaline etching solution treatment co-production process |
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| DE102004031834A1 (en) * | 2004-06-16 | 2005-12-29 | Elo-Chem-Csm Gmbh | Treating circuit boards comprises preparing pure or treated etching solution from a process solution container of the etching machine, feeding the consumed etching solution to a treatment station and returning to the container |
| CN201704080U (en) * | 2010-05-18 | 2011-01-12 | 昆山市千灯三废净化有限公司 | Alkaline etching liquid ammonia evaporation and ammonia absorption system |
| CN103979625A (en) * | 2014-04-25 | 2014-08-13 | 昆山市益民环保技术开发有限公司 | Mixing method for treating acid and alkaline etching waste liquid and nitric acid stripping waste liquid of printed-circuit boards |
| CN107385445A (en) * | 2017-07-27 | 2017-11-24 | 四会富士电子科技有限公司 | A kind of method that circuitboard etching waste liquid recycles |
-
2019
- 2019-01-16 CN CN201910040826.3A patent/CN109628935A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102004031834A1 (en) * | 2004-06-16 | 2005-12-29 | Elo-Chem-Csm Gmbh | Treating circuit boards comprises preparing pure or treated etching solution from a process solution container of the etching machine, feeding the consumed etching solution to a treatment station and returning to the container |
| CN201704080U (en) * | 2010-05-18 | 2011-01-12 | 昆山市千灯三废净化有限公司 | Alkaline etching liquid ammonia evaporation and ammonia absorption system |
| CN103979625A (en) * | 2014-04-25 | 2014-08-13 | 昆山市益民环保技术开发有限公司 | Mixing method for treating acid and alkaline etching waste liquid and nitric acid stripping waste liquid of printed-circuit boards |
| CN107385445A (en) * | 2017-07-27 | 2017-11-24 | 四会富士电子科技有限公司 | A kind of method that circuitboard etching waste liquid recycles |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110042425A (en) * | 2019-04-23 | 2019-07-23 | 博罗县华盈科技有限公司 | A kind of heavy process for copper of alkaline etching waste liquid for producing direct electrowinning |
| CN110113884A (en) * | 2019-05-14 | 2019-08-09 | 四川海英电子科技有限公司 | The fast-etching device and method of new-energy automobile printed circuit board |
| CN112522708A (en) * | 2020-12-21 | 2021-03-19 | 泰兴冶炼厂有限公司 | Alkaline etching solution treatment co-production process |
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