CN109112575A - A kind of alkali etching electrolysis cycle regenerative system and electrolysis cycle regeneration method - Google Patents
A kind of alkali etching electrolysis cycle regenerative system and electrolysis cycle regeneration method Download PDFInfo
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- CN109112575A CN109112575A CN201810979234.3A CN201810979234A CN109112575A CN 109112575 A CN109112575 A CN 109112575A CN 201810979234 A CN201810979234 A CN 201810979234A CN 109112575 A CN109112575 A CN 109112575A
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
- C25C7/00—Constructional parts, or assemblies thereof, of cells; Servicing or operating of cells
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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
- C23F1/46—Regeneration of etching compositions
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- 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
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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 present invention provides a kind of alkali etching electrolysis cycle regenerative system and electrolysis cycle regeneration methods, the indirect regeneration includes electrolytic cell, circulating slot and adjustment tank, the electrolytic cell connects cooling tower by cooling water pipe, the upstream of the electrolytic cell is provided with waste liquid storage barrel, the upstream connection etching production line of waste liquid storage barrel, the upstream of the circulating slot is provided with regenerated liquid storage barrel, the electrolyte bath is provided with electrode plate pedestal, the electrode plate pedestal is fixedly connected with electrode by pole plate fixed screw, rectifier is provided between the electrode and electroplating power supply, the circulation regeneration method includes preparing, electrolysis, propose four steps of copper and allotment；Production line is connect by the present invention with indirect regeneration, the continuous production of etching and electrolysis is ensured, safety is good, it is environment friendly and pollution-free, a large amount of copper ions in etching waste liquor can effectively be recycled, discharge water and the noxious material discharged in gas are preferably minimized, and production efficiency and business efficiency are good, and production cost is low.
Description
Technical field
The present invention relates to fine chemical product technology fields, and in particular to a kind of alkali etching electrolysis cycle regenerative system
And electrolysis cycle regeneration method.
Background technique
With the improvements of electronics industry, Chinese wiring board industry development consequently also broad-based recovery, according to " in 2009-2012
The development of state's printed circuit board industry and Potential Prediction analysis report " it points out, China will become in recent years the world's largest PCB industry
Base accounts for 30% or so of world market at present.Meanwhile Sichuan Suining has been country's examination & approval " southwestern circuit board at present
(PCB) industry manufacture base ", the PCB industry giants' such as Chongqing of Sichuan two places Founder Electronic, Foxconn's electronics enters, coastal a large amount of
Circuit board plant is moved to the interior, and PCB industry will welcome huge business opportunity.
The significant components of electric appliance and electronic product when printed circuit board, application is very universal, and wherein etching work procedure is PCB raw
Maximum a part of specific gravity in process is produced, when etching solution makes to etch index (including speed, lateral erosion since the substance of dissolution is too many
Coefficient, clean surface etc.) lower than technique require when, become etching waste liquor.
Nowadays the etching waste liquor amount that PCB industry is discharged is in rapid increasing trend every year, this to recycle etching solution
The requirement of generating apparatus is also higher and higher again, and generally speaking, current etching solution recycling equipment has low efficiency, cost mostly
Height takes up a large area, has the problems such as three wastes discharge.
Summary of the invention
To solve the above problems, the present invention is intended to provide a kind of product conversion rate it is fast, product purity is high, economic effect
Benefit good and environmental-friendly alkali etching electrolysis cycle regenerative system and electrolysis cycle regeneration method.
Purpose to realize the present invention, the technical solution adopted is that: a kind of alkali etching electrolysis cycle regenerative system, it is described to follow
Ring regenerative system includes electrolytic cell, circulating slot and adjustment tank, and adjustment tank, circulating slot are provided between the electrolytic cell and circulating slot
Electrolytic cell is connected by circulating pump, circulating pump connects electrolytic cell by circulation pipe and circulating slot, the electrolytic cell pass through cooling water
Pipe connects cooling tower, and the upstream of the electrolytic cell is provided with waste liquid storage barrel, the upstream connection etching production of waste liquid storage barrel
Line, the upstream of the circulating slot are provided with regenerated liquid storage barrel, and the downstream of circulating slot is provided with regeneration liquid storage tank, the electrolytic cell
It is internally provided with electrode plate pedestal, the electrode plate pedestal is fixedly connected with cathode copper bar and anode copper by pole plate fixed screw
Item is provided with rectifier between the cathode copper bar and anode copper bar and electroplating power supply；
The downstream connection of the sub- flow container of regeneration etches production line, and the upstream of the sub- flow container of regeneration connects dispensing cylinder, adjusts
Upstream with cylinder connects blend tank, the upstream connection regeneration liquid storage tank and ammonia tank of blend tank, the upstream of the regeneration liquid storage tank
Connect regenerated liquid storage barrel；
The downstream of the electrolytic cell is additionally provided with exhaust fan, and the downstream connection water of exhaust fan absorbs cylinder and environment exhaust column,
Water absorbs the downstream connection alkali liquid washing tower of cylinder, and the outside of the indirect regeneration is provided with environment exhaust column, environment exhausting
The downstream connection alkali liquid washing tower of pipe, the downstream of the dispensing cylinder are additionally provided with water and absorb cylinder, and the downstream that water absorbs cylinder is also set up
There are blend tank or blend tank.
Preferably, the cathode copper bar and anode copper bar are vertically put into electrolytic cell, and cathode copper bar and anode copper bar intersect
It places, the both ends of cathode copper bar are longer than the both ends of anode copper bar, and the length that both ends exceed is identical.
Preferably, the electrode plate pedestal is identical as the material of cathode copper bar and anode copper bar.
A kind of alkali etching electrolysis cycle regeneration method, the circulation regeneration method the following steps are included:
1) prepare: first check and calibrate cathode copper bar whether deform, bending, cathode copper bar and anode copper bar are passed through into pole
Plate fixed screw is fixedly mounted on the electrode plate pedestal on electrolytic cell, and the pole plate reexamined on cathode copper bar and anode copper bar is solid
Whether short-circuit determine screw, starts indirect regeneration；
2) is electrolysed: taking out regenerated liquid toward circulating slot, circulating slot turns on circulating pump after pumping full, regenerated liquid is extracted by circulating pump
In electrolytic cell, until being full of regenerated liquid in electrolytic cell, and also there is a small amount of regenerated liquid in circulating slot, it then will be in waste liquid storage barrel
Waste liquid be added to circulating slot, be added to circulating slot can overflow to adjustment groove height 2/3, stop addition waste liquid, it is to be recycled
After regenerating 10min, sample examination copper content, adjusting copper content range is 27~31g/L, if copper content does not reach again
A small amount of addition waste liquid, until being adjusted to content range；
Then stabilizer is added in circulating slot, when activation system adds 4L stabilizer, then stablizes at interval of 6 hours plus 1L
Then rectifier is opened in agent, electric current is transferred to 900A or 1000A, from opening after motor-generator set regulates electric current, increases electricity every 1h
100A is flowed, current regulation can achieve 1400~2300A, and continued electrolysis 48h, every 1~2h raise electrolytic cell lid inspection yin-yang
Pole copper bar, if hot and high temperataure phenomena occur；
3) mentions copper: the solution of electrolytic cell being first extracted into regeneration liquid storage tank, when taking out the solution of electrolytic cell, according to liquid in slot
Face declines situation, gradually turns the electric current of motor-generator set down and exposes in electrolytic cell after the solution in electrolytic cell is extracted into regeneration liquid storage tank
Cathode copper bar and anode copper bar are first turned on exhaust fan and take out exhaust gas, finally come loose cathode copper bar and bottom before proposing cathode copper bar
Screw between seat copper sheet, cathode is taken out, regenerated liquid is transferred in regenerated liquid storage barrel；
It is shoveled down with perching knife along cathode copper bar top when shelling copper, cathode copper bar cannot be beaten with sharp tool；
Copper and company depositary management personnel are weighed storage together after copper-stripping is complete；
4) is deployed: first being chemically examined the chloride ion and pH value in regenerated liquid and is made a record, checks whether and be turned off from blend tank
To the valve for regenerating sub- flow container, regeneration liquid pump is opened by regenerated liquid and is extracted into regeneration liquid storage tank from regenerated liquid storage barrel, then from regeneration
Liquid storage tank is pumped into blend tank, is then turned on stirring；
Material required for allotment regenerated liquid is calculated after the specified liquid level of regeneration flow container extraction regenerated liquid arrival blend tank,
The valve from regeneration liquid storage tank to blend tank is closed, can start to add materials when liquid level reaches tank body 1/4 in blend tank, add
Adding sequence is ammonium chloride, ammonium hydrogen carbonate and additive, and ammonium chloride, which need to divide 3~5 times, to be poured into, then every minor tick 10s or more takes out again
For regenerated liquid to dispensing cylinder, the space of reserved 20~30cm is used to add liquefied ammonia, and when tapping ammonia, spanner is opened in the counterclockwise direction
30~60 °, 30s is opened in stirring every 10min, allows liquefied ammonia and regenerated liquid to be sufficiently mixed, spanner is beaten when ammonia tank discharges fastly
Open 90 °；
After material adds, it is stirred for 20~30min sample examination, analysis data includes pH value, chloride ion content, no
Qualification is supplemented correlative redistribution and stirs 20 minutes according to data measured, then sample examination again, will regeneration after qualified
Sub- liquid is extracted into the sub- flow container of regeneration.
Preferably, the copper ion concentration that is switched in the circulation regeneration method step 2 is adjusted to 27~31g/L, electric current 900A
~1000A；
Copper ion concentration starts to add waste liquid when dropping to 19~21g/L, and it is dense then to chemically examine a copper ion every 2h
Degree, while stepping up electric current.
Preferably, the normal additive amount of waste liquid is 60~80L/H in the circulation regeneration method step 2, is lower than this flow
Shi Tianjia 0.5~1L stabilizer.
Preferably, the temperature of cooling tower control electrolytic cell is 0~45 DEG C in the circulation regeneration method step 2.
The invention has the benefit that connecting production line with indirect regeneration present invention optimizes traditional handicraft, protect
Hindering the continuous production of etching and electrolysis, safety is good, and it is environment friendly and pollution-free, it can effectively recycle a large amount of copper in etching waste liquor
Ion guarantees that discharge water and the noxious material discharged in gas are preferably minimized, and production efficiency and business efficiency are good, production cost
It is low, the regeneration of etching solution is ensured simultaneously in the process of electrolysis.
Detailed description of the invention
Fig. 1 is gas withdrawal processing technique flowage structure schematic diagram in alkali etching electrolysis cycle regeneration method of the present invention.
Fig. 2 is etching solution circulation technology flowage structure schematic diagram in alkali etching electrolysis cycle regeneration method of the present invention.
Specific embodiment
Below in conjunction with the embodiment of the present invention, technical solution of the present invention is clearly and completely described, it is clear that
Described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Based on the implementation in the present invention
Example, every other embodiment obtained by those of ordinary skill in the art without making creative efforts belong to
The scope of protection of the invention.
Embodiment 1
It please refers to shown in Fig. 1-2, the technical solution adopted by the present invention are as follows: a kind of alkali etching electrolysis cycle regenerative system,
The indirect regeneration includes electrolytic cell, circulating slot and adjustment tank, is provided with adjustment tank between the electrolytic cell and circulating slot,
Circulating slot connects electrolytic cell by circulating pump, and circulating pump connects electrolytic cell by circulation pipe and circulating slot, the electrolytic cell pass through
Cooling water pipe connects cooling tower, and the upstream of the electrolytic cell is provided with waste liquid storage barrel, and the upstream of waste liquid storage barrel connects erosion
Production line is carved, the upstream of the circulating slot is provided with regenerated liquid storage barrel, and the downstream of circulating slot is provided with regeneration liquid storage tank, described
Electrolyte bath is provided with electrode plate pedestal, and the electrode plate pedestal is fixedly connected with cathode copper bar and sun by pole plate fixed screw
Pole copper bar is provided with rectifier between the cathode copper bar and anode copper bar and electroplating power supply；
The downstream connection of the sub- flow container of regeneration etches production line, and the upstream of the sub- flow container of regeneration connects dispensing cylinder, adjusts
Upstream with cylinder connects blend tank, the upstream connection regeneration liquid storage tank and ammonia tank of blend tank, the upstream of the regeneration liquid storage tank
Connect regenerated liquid storage barrel；
The downstream of the electrolytic cell is additionally provided with exhaust fan, and the downstream connection water of exhaust fan absorbs cylinder and environment exhaust column,
Water absorbs the downstream connection alkali liquid washing tower of cylinder, and the outside of the indirect regeneration is provided with environment exhaust column, environment exhausting
The downstream connection alkali liquid washing tower of pipe, the downstream of the dispensing cylinder are additionally provided with water and absorb cylinder, and the downstream that water absorbs cylinder is also set up
There are blend tank or blend tank.
Further, the cathode copper bar and anode copper bar are vertically put into electrolytic cell, and cathode copper bar and anode copper bar are handed over
Fork is placed, and the both ends of cathode copper bar are longer than the both ends of anode copper bar, and the length that both ends exceed is identical.
Further, the electrode plate pedestal is identical as the material of cathode copper bar and anode copper bar.
A kind of alkali etching electrolysis cycle regeneration method, the circulation regeneration method the following steps are included:
1) prepare: first check and calibrate cathode copper bar whether deform, bending, cathode copper bar and anode copper bar are passed through into pole
Plate fixed screw is fixedly mounted on the electrode plate pedestal on electrolytic cell, and the pole plate reexamined on cathode copper bar and anode copper bar is solid
Whether short-circuit determine screw, starts indirect regeneration；
2) is electrolysed: taking out regenerated liquid toward circulating slot, circulating slot turns on circulating pump after pumping full, regenerated liquid is extracted by circulating pump
In electrolytic cell, until being full of regenerated liquid in electrolytic cell, and also there is a small amount of regenerated liquid in circulating slot, it then will be in waste liquid storage barrel
Waste liquid be added to circulating slot, be added to circulating slot can overflow to adjustment groove height 2/3, stop addition waste liquid, it is to be recycled
After regenerating 10min, sample examination copper content, adjusting copper content range is 27~31g/L, if copper content does not reach again
A small amount of addition waste liquid, until being adjusted to content range；
Then stabilizer is added in circulating slot, when activation system adds 4L stabilizer, then stablizes at interval of 6 hours plus 1L
Then rectifier is opened in agent, electric current is transferred to 900A or 1000A, from opening after motor-generator set regulates electric current, increases electricity every 1h
100A is flowed, current regulation can achieve 1400~2300A, and continued electrolysis 48h, every 1~2h raise electrolytic cell lid inspection yin-yang
Pole copper bar, if hot and high temperataure phenomena occur；
3) mentions copper: the solution of electrolytic cell being first extracted into regeneration liquid storage tank, when taking out the solution of electrolytic cell, according to liquid in slot
Face declines situation, gradually turns the electric current of motor-generator set down and exposes in electrolytic cell after the solution in electrolytic cell is extracted into regeneration liquid storage tank
Cathode copper bar and anode copper bar are first turned on exhaust fan and take out exhaust gas, finally come loose cathode copper bar and bottom before proposing cathode copper bar
Screw between seat copper sheet, cathode is taken out, regenerated liquid is transferred in regenerated liquid storage barrel；
It is shoveled down with perching knife along cathode copper bar top when shelling copper, cathode copper bar cannot be beaten with sharp tool；
Copper and company depositary management personnel are weighed storage together after copper-stripping is complete；
4) is deployed: first being chemically examined the chloride ion and pH value in regenerated liquid and is made a record, checks whether and be turned off from blend tank
To the valve for regenerating sub- flow container, regeneration liquid pump is opened by regenerated liquid and is extracted into regeneration liquid storage tank from regenerated liquid storage barrel, then from regeneration
Liquid storage tank is pumped into blend tank, is then turned on stirring；
Material required for allotment regenerated liquid is calculated after the specified liquid level of regeneration flow container extraction regenerated liquid arrival blend tank,
The valve from regeneration liquid storage tank to blend tank is closed, can start to add materials when liquid level reaches tank body 1/4 in blend tank, add
Adding sequence is ammonium chloride, ammonium hydrogen carbonate and additive, and ammonium chloride, which need to divide 3~5 times, to be poured into, then every minor tick 10s or more takes out again
For regenerated liquid to dispensing cylinder, the space of reserved 20~30cm is used to add liquefied ammonia, and when tapping ammonia, spanner is opened in the counterclockwise direction
30~60 °, 30s is opened in stirring every 10min, allows liquefied ammonia and regenerated liquid to be sufficiently mixed, spanner is beaten when ammonia tank discharges fastly
Open 90 °；
After material adds, it is stirred for 20~30min sample examination, analysis data includes pH value, chloride ion content, no
Qualification is supplemented correlative redistribution and stirs 20 minutes according to data measured, then sample examination again, will regeneration after qualified
Sub- liquid is extracted into the sub- flow container of regeneration.
Further, the copper ion concentration that is switched in the circulation regeneration method step 2 is adjusted to 27~31g/L, electric current
900A~1000A；
Copper ion concentration starts to add waste liquid when dropping to 19~21g/L, and it is dense then to chemically examine a copper ion every 2h
Degree, while stepping up electric current.
Further, the normal additive amount of waste liquid is 60~80L/H in the circulation regeneration method step 2, lower than this stream
0.5~1L stabilizer is added when amount.
Further, the temperature of cooling tower control electrolytic cell is 0~45 DEG C in the circulation regeneration method step 2.
In the present invention, present invention optimizes traditional handicrafts, and production line is connect with indirect regeneration, has ensured etching
With the continuous production of electrolysis, safety is good, environment friendly and pollution-free, can effectively recycle a large amount of copper ions in etching waste liquor, protects
Card discharge water and the noxious material discharged in gas are preferably minimized, and production efficiency and business efficiency are good, and production cost is low, are being electrolysed
Process ensure the regeneration of etching solution simultaneously.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (7)
1. a kind of alkali etching electrolysis cycle regenerative system, it is characterised in that: the indirect regeneration includes electrolytic cell, circulation
Slot and adjustment tank, are provided with adjustment tank between the electrolytic cell and circulating slot, circulating slot connects electrolytic cell, circulation by circulating pump
Pump connects electrolytic cell and circulating slot by circulation pipe, and the electrolytic cell connects cooling tower, the electrolytic cell by cooling water pipe
Upstream be provided with waste liquid storage barrel, the upstream connection etching production line of waste liquid storage barrel, the upstream of the circulating slot is provided with
Regenerated liquid storage barrel, the downstream of circulating slot are provided with regeneration liquid storage tank, and the electrolyte bath is provided with electrode plate pedestal, described
Electrode plate pedestal is fixedly connected with cathode copper bar and anode copper bar by pole plate fixed screw, the cathode copper bar and anode copper bar with
Rectifier is provided between electroplating power supply；
The downstream connection of the sub- flow container of regeneration etches production line, and the upstream of the sub- flow container of regeneration connects dispensing cylinder, dispensing cylinder
Upstream connect blend tank, the upstream connection regeneration liquid storage tank and ammonia tank of blend tank, the upstream connection of the regeneration liquid storage tank
Regenerated liquid storage barrel；
The downstream of the electrolytic cell is additionally provided with exhaust fan, and the downstream connection water of exhaust fan absorbs cylinder and environment exhaust column, and water is inhaled
The downstream connection alkali liquid washing tower of cylinder is received, the outside of the indirect regeneration is provided with environment exhaust column, environment exhaust column
Downstream connection alkali liquid washing tower, the downstream of the dispensing cylinder are additionally provided with water and absorb cylinder, and the downstream that water absorbs cylinder is additionally provided with tune
Distribution tank or blend tank.
2. a kind of alkali etching electrolysis cycle regenerative system according to claim 1, it is characterised in that: the cathode copper bar
It is vertically put into electrolytic cell with anode copper bar, cathode copper bar and anode copper bar, which intersect, to be placed, and anode copper is compared at the both ends of cathode copper bar
The both ends of item are long, and the length that both ends exceed is identical.
3. a kind of alkali etching electrolysis cycle regenerative system according to claim 1, it is characterised in that: the electrode plate bottom
Seat is identical as the material of cathode copper bar and anode copper bar.
4. a kind of alkali etching electrolysis cycle regeneration method, it is characterised in that: the circulation regeneration method the following steps are included:
1) prepare: first check and calibrate cathode copper bar whether deform, bending, cathode copper bar and anode copper bar are consolidated by pole plate
Determine on the electrode plate pedestal that screw is fixedly mounted on electrolytic cell, reexamines the fixed spiral shell of pole plate on cathode copper bar and anode copper bar
Whether silk is short-circuit, starts indirect regeneration；
2) is electrolysed: taking out regenerated liquid toward circulating slot, circulating slot turns on circulating pump after pumping full, regenerated liquid is extracted into electrolysis by circulating pump
In slot, until being full of regenerated liquid in electrolytic cell, and also there is a small amount of regenerated liquid in circulating slot, it then will be useless in waste liquid storage barrel
Liquid is added to circulating slot, and the 2/3 of adjustment groove height can be overflowed to by being added to circulating slot, stops addition waste liquid, regeneration to be recycled
After 10min, sample examination copper content, adjusting copper content range is 27~31g/L, a small amount of again if copper content does not reach
Waste liquid is added, until being adjusted to content range；
Then stabilizer being added in circulating slot, when activation system, adds 4L stabilizer, then at interval of 6 hours plus 1L stabilizer,
Then rectifier is opened, electric current is transferred to 900A or 1000A, from opening after motor-generator set regulates electric current, every 1h high current
100A, current regulation can achieve 1400~2300A, and continued electrolysis 48h, every 1~2h raise electrolytic cell lid inspection anode and cathode
Copper bar, if hot and high temperataure phenomena occur；
3) mentions copper: the solution of electrolytic cell being first extracted into regeneration liquid storage tank, when taking out the solution of electrolytic cell, according under liquid level in slot
Situation is dropped, the electric current of motor-generator set is gradually turned down and exposes the cathode in electrolytic cell after the solution in electrolytic cell is extracted into regeneration liquid storage tank
Copper bar and anode copper bar are first turned on exhaust fan and take out exhaust gas before proposing cathode copper bar, and finally come loose cathode copper bar and pedestal copper
Screw between plate, cathode is taken out, and regenerated liquid is transferred in regenerated liquid storage barrel；
It is shoveled down with perching knife along cathode copper bar top when shelling copper, cathode copper bar cannot be beaten with sharp tool；Copper stripping
Copper and company depositary management personnel are weighed storage together from after complete；
4) is deployed: first being chemically examined the chloride ion and pH value in regenerated liquid and is made a record, checks whether and be turned off from blend tank to again
The valve of raw sub- flow container opens regeneration liquid pump for regenerated liquid and is extracted into regeneration liquid storage tank from regenerated liquid storage barrel, then stores up from regenerated liquid
Tank is pumped into blend tank, is then turned on stirring；
Material required for allotment regenerated liquid is calculated after the specified liquid level of regeneration flow container extraction regenerated liquid arrival blend tank, is closed
It from regeneration liquid storage tank to the valve of blend tank, can start to add materials when liquid level reaches tank body 1/4 in blend tank, add suitable
Sequence is ammonium chloride, ammonium hydrogen carbonate and additive, and ammonium chloride, which need to divide 3~5 times, to be poured into, then every minor tick 10s or more takes out regeneration again
For liquid to dispensing cylinder, the space of reserved 20~30cm is used to add liquefied ammonia, when tapping ammonia, spanner is opened in the counterclockwise direction 30~
60 °, 30s is opened in stirring every 10min, allows liquefied ammonia and regenerated liquid to be sufficiently mixed, spanner is opened when ammonia tank discharges fastly
90°；
After material adds, it is stirred for 20~30min sample examination, analysis data includes pH value, chloride ion content, unqualified
It according to data measured, is supplemented correlative redistribution and stirs 20 minutes, then sample examination again, sub- liquid will be regenerated after qualified
It is extracted into the sub- flow container of regeneration.
5. a kind of alkali etching electrolysis cycle regeneration method according to claim 1, it is characterised in that: the circular regeneration
The copper ion concentration that is switched in method and step 2 is adjusted to 27~31g/L, electric current 900A~1000A；
Copper ion concentration starts to add waste liquid when dropping to 19~21g/L, then chemically examines a copper ion concentration every 2h, together
When step up electric current.
6. a kind of alkali etching electrolysis cycle regeneration method according to claim 1, it is characterised in that: the circular regeneration
The normal additive amount of waste liquid is 60~80L/H in method and step 2, adds 0.5~1L stabilizer when being lower than this flow.
7. a kind of alkali etching electrolysis cycle regeneration method according to claim 1, it is characterised in that: the circular regeneration
The temperature of cooling tower control electrolytic cell is 0~45 DEG C in method and step 2.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111394749A (en) * | 2020-04-26 | 2020-07-10 | 江苏地一环保科技有限公司 | Electrolysis device and printed board alkaline etching waste liquid regeneration and copper recovery equipment thereof |
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