CN106480478B - A kind of preparation method of novel corrosion resistant zinc cathode plate - Google Patents
A kind of preparation method of novel corrosion resistant zinc cathode plate Download PDFInfo
- Publication number
- CN106480478B CN106480478B CN201611141553.4A CN201611141553A CN106480478B CN 106480478 B CN106480478 B CN 106480478B CN 201611141553 A CN201611141553 A CN 201611141553A CN 106480478 B CN106480478 B CN 106480478B
- Authority
- CN
- China
- Prior art keywords
- cathode plate
- zinc
- oxidation
- preparation
- corrosion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- 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
- C25C7/02—Electrodes; Connections 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
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
- C23C22/06—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6
- C23C22/48—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 not containing phosphates, hexavalent chromium compounds, fluorides or complex fluorides, molybdates, tungstates, vanadates or oxalates
- C23C22/56—Treatment of aluminium or alloys based thereon
-
- 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
- C25C1/16—Electrolytic production, recovery or refining of metals by electrolysis of solutions of zinc, cadmium or mercury
-
- 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
Abstract
The present invention relates to a kind of preparation methods of novel corrosion resistant zinc cathode plate, by common zinc cathode plate by pre-processing, remove cathode plate surface impurity and greasy dirt, destroy cathode plate surface densification aluminum oxide simultaneously, it is then placed in acidic oxidation slot and carries out oxidation processes, obtain one layer of modified compact oxide film, place into liquor potassic permanganate and carry out oxidation closing micro hole, cathode plate curing process under the high temperature conditions is closed, novel corrosion resistant cathode plate is obtained.The preparation method of the corrosion-resistant zinc cathode plate of the utility model can obviously improve stripping zinc efficiency, extends the service life of cathode plate, improves the anti-percussion performance of cathode plate, application prospect is extensive.
Description
Technical field
The present invention relates to non-ferrous zinc metallurgical technology and cathode plate surface processing technology fields, more particularly to one kind
The preparation method of novel corrosion resistant zinc cathode plate.
Background technology
The cathode plate of zinc by wet method is to roll plate with fine aluminium, and anode plate is with lead-silver alloy, lead-silver multicomponent alloy
Manufacture.In process of production, in the solution of zinc sulfate of the plate face overwhelming majority of cathode plate and anode plate submergence in a cell,
Under the action of direct current, discharge depositing respectively occurs for cathode, anode, and the zinc in zinc sulfate is deposited to the plate for being attached to cathode plate
On face, total electrochemical reaction formula of electrolytic deposition is：
ZnSO4+H2O+еZn+H2SO4+1/2O2
But the part more than neck that in process of production, cathode plate connects with the plate face of anode plate with plate-girder, is exposed
In a cell other than solution of zinc sulfate, due to suffering acidity seriously corroded for a long time, especially exposed zinc sulfate in a cell is molten
Cathode pan section other than liquid corrodes especially severe, although the cathode plate face being immersed in electrolytic cell solution of zinc sulfate is substantially complete
It is good, but because of plate face neck seriously corroded, cannot be used continuously, it causes cathode plate service life short, increases production cost.With
The reduction of zinc concentrate resource, electrolytic zinc raw material is increasingly complicated, causes fluorine/chlorion in solution of zinc sulfate exceeded, and to cathode plate
Corrosion impact the biggest factor is fluorine ion, therefore cathode plate extent of corrosion is caused to aggravate.
Patent CN2887892Y propose the cathode plate of zinc by wet method and the plate neck surface of anode plate apply one layer it is anti-
The method of rotten layer extends the corrosion resistance of electrolytic zinc negative and positive machine plate, but is only coated with one layer of epoxy resin or heatproof preserving timber
Material, the extension service life is partially short, and cannot reduce power consumption.
Patent CN201495302U discloses a kind of preparation method of electrolytic zinc anode plate, proposes using naked in pole plate upper end
Anti-corrosion item is installed at dew position on the electrolyte, described in anti-corrosion item be to be installed in pole plate made of synthetic material
Top will not be damaged due to by the corrosion of severe gas, can extend the service life of cathode plate, but synthetic material manufacture craft is multiple
It is miscellaneous, need specific synthesis device, be of high cost and power consumption cannot be reduced.
Patent CN101781780B proposes a kind of method improving corrosion resistance of cathode aluminum plate for zinc electrolysis, uses
Special ROLLING OIL, using two conventional rollers, irreversible, intermittent machine rolls aluminium, immediately using processing silicon after rolling
Sour sodium carries out subsequent processing, obtains the aluminium donkey-hide gelatin plate of surfacing, and generates larger, the comparatively dense oxide surface layer of thickness,
To improve its corrosion resistance, but that there are equipment investments is big, process is more, it is of high cost, the shortcomings that power consumption cannot be reduced.
United States Patent (USP) US005498322A is proposed makees zinc electrolysis cathode plate with aluminium alloy, by add magnesium, silicon, iron,
The elements such as copper, zinc roll plate to the method for cold rolling, and to which aluminium alloy plate be made, the aluminium sheet of gained improves anti-corruption
Corrosion energy, to extend the service life of cathode.Aluminium is the active metal of comparison, is easily corroded, and especially electrolytic zinc is used
The exposed part outside liquid level line of cathode plate, previously mentioned anti-corrosion method, all not clear enough, operating procedure is relative complex,
And it on how to reduce tank voltage, improves electricity effect and did not mentioned more.
In conclusion how improving the corrosion resistance of cathode plate, increasing the service life of aluminium sheet, while reducing slot electricity
Pressure improves current efficiency, is the problem for needing further to be explored.
Invention content
It is an object of the invention to be directed to the deficiency of the prior art, a kind of preparation side of novel corrosion resistant zinc cathode plate is provided
Method.
The technical scheme is that：
A kind of preparation method of novel corrosion resistant zinc cathode plate, it is characterised in that:Include the following steps：
A pretreatment process：Conventional cathode plate is subjected to surface removal of impurities, de- oily waste treatment, while destroying cathode plate surface cause
Close aluminum oxide obtains pretreatment cathode plate；
B oxidation operations：Cathode plate after pretreatment obtained by step A is subjected to oxidation processes in acidic oxidation slot, obtains one
The modified compact oxide film of layer obtains oxidation cathode plate；
C closing steps：Oxidation cathode plate obtained by step B is put into liquor potassic permanganate, oxidation closing micro hole is carried out,
Obtain closing cathode plate；
D curing process：By closing cathode plate obtained by step C, curing process 1~3 is small under the conditions of temperature is 400~500 DEG C
When, obtain novel corrosion resistant cathode plate；
As a further improvement on the present invention, the pretreatment process includes polishing, acidic leaching, alkali cleaning, washing, throwing
Light and ultrasonic washing.
As a further improvement on the present invention, the acidic leaching, leaching condition are：Sulfuric acid concentration of volume percent is
50~100g/L, 50~75 DEG C of soaking temperature, soaking time are 1~3 hour.
As a further improvement on the present invention, in the step B, the oxidation system is sulfuric acid system, oxidant
For hydrogen peroxide.
As a further improvement on the present invention, the oxidizing condition is：Sulfuric acid concentration of volume percent be 120~
180g/L, 80~95 DEG C of oxidizing temperature, oxidization time are 3~6 hours, are washed to cathode plate after oxidation, obtain oxygen
Change cathode plate.
As a further improvement on the present invention, in the step C, sealing condition is：Solution system is sulfuric acid system, sulphur
Sour concentration of volume percent is 50~120g/L, and the mass percent concentration of potassium permanganate is 15%~20%, closure temperature 70
~90 DEG C, off-period is 3~5 hours, is washed to cathode plate after closing, obtains closing cathode plate.
As a further improvement on the present invention, in the step D, stove heating rate is 50~100 DEG C, furnace
At 300 DEG C or more, cooling rate is 80~120 DEG C.
The present invention key reaction principle and its chemical equation be：
3H2SO4+Al2O3=Al2(SO4)3+3H2O…………………………………（1）
H2SO4+ Me=MeSO4+H2↑…………………………………………（2）
(Me=Zn, Fe etc.)
H2SO4+ ZnO=ZnSO4+H2O…………………………………………（3）
3H2SO4+Fe2O3=Fe2(SO4)3+3H2O…………………………………（4）
2Al+3H2O2=Al2O3+3H2O ………………………………………（5）
H2SO4+2Al+2KMnO4=2MnO2+Al2O3+K2SO4+H2O……………………（6）
The beneficial effects of the present invention are：
Cathode plate is surface-treated, surface of aluminum plate micropore is made to be obviously reduced or be blocked, and is formed on its surface non-
Often hard aquation nitride layer.It allows precipitation zinc to be deposited on this layer of hard shell, the technological problems that zinc is not easily stripped can be solved.Through surface
As shown in Figure 1, as seen from the figure, the micropore of cathode plate surface is hard by one layer for the microphotogram of cathode plate that treated
Aquation nitride layer is covered, and such cathode zinc is electrodeposited in its surface and is just easier to peel off.
Common zinc cathode plate is observed at × 10000 times of SEM, situation is as shown in Figure 2.As can be drawn from Figure 2, it removes
Have outside a small amount of stomata, metal surface is smooth.And it will be according to the method for the present invention by closing cured novel corrosion resistant cathode plate
It is observed at × 25000 times of SEM, as shown in Figure 3.From figure 3, it can be seen that novel corrosion resistant cathode plate surface oxide layer is formed
One layer of flat-satin and hard corrosion resistant structure sheaf, the product original scraggly aluminium surface is filled and led up form one layer it is anti-
Rotten film, exactly this corrosion resistant structure sheaf can contain dilute sulfuric acid or F in zinc electrolyte-Deng corrosion.
Novel corrosion resistant zinc cathode plate preparation process flow of the present invention is simple, low to equipment material requirement, easy to operate easy
Row, easily realizes mass production, can effectively improve the corrosion resistance of cathode plate, increase anti-F performances（It is wanted in conventional zinc electrolyte
Ask F contents in 80mg/L hereinafter, by the improvement of cathode plate, 300mg/L or more can be improved in F contents in zinc electrolyte）, to
Improve the structure of zinc raw material；And the service life of cathode plate can be made to extend 90 days or more, the replacement frequency of cathode plate is reduced, is dropped
Low zinc abstraction cost；The modification of the corrosion-resistant zinc cathode plate surface aluminium oxide of the utility model and micropore closing, can improve and the heavy of zinc is precipitated
Product crystallization mode, reduces and adhesive force of the zinc on cathode plate is precipitated, and can be improved stripping zinc efficiency, the enlargement of stripping zinc easy to implement and
Mechanization；The modification of the corrosion-resistant zinc cathode plate surface aluminium oxide of the utility model and micropore closing, reduce cathode plate to a certain extent
Resistance reduce and zinc power consumption be precipitated to reduce by 0.02~0.08V of tank voltage；The adamantine corrosion resistant structure of cathode plate surface
The formation of layer, improves anti-percussion ability of cathode plate during shelling zinc, the preparation method of the corrosion-resistant zinc cathode plate of the utility model
Invest small, low energy consumption, pollution-free, is a kind of preparation method of economic, efficient novel corrosion resistant zinc cathode plate, and application prospect is wide
It is general.
Description of the drawings
Fig. 1 is the microphotogram of the cathode plate after surface treated.
Fig. 2 is microphotogram of the common zinc cathode plate at × 10000 times of SEM.
Fig. 3 is the microphotogram by closing cured novel corrosion resistant cathode plate at × 25000 times of SEM.
Fig. 4 is a kind of process flow chart of the preparation method of novel corrosion resistant zinc cathode plate of the present invention.
Specific implementation mode
In order to make the technical problems, technical solutions and beneficial effects solved by the present invention be more clearly understood, below in conjunction with
Embodiment, invention is further described in detail.It should be appreciated that specific embodiment described herein is used only for explaining this
Invention, is not intended to limit the present invention, and the present invention includes other embodiment and and its deformation within the scope of its technological thought.
An embodiment of the present invention provides a kind of preparation methods of novel corrosion resistant zinc cathode plate, please refer to Fig. 4.Sometimes according to
The surface cleanness of cathode plate also adds washing or ultrasonic washing, or reduces the steps such as washing or ultrasonic washing
Suddenly, but as long as typical process flow is constant, then the present invention can also apply.
Below by specific embodiment, invention is further explained.
Embodiment 1
Step A, pretreatment process：It is molten that the sulfuric acid that concentration of volume percent is 50g/L is put into after conventional cathode plate is polished
It is impregnated in liquid, 75 DEG C of temperature, the time is 1 hour, then carries out alkali cleaning, washing, polishing and ultrasonic washing, obtains pretreatment cathode
Plate.
Step B, oxidation operation：Will after pretreatment obtained by step A cathode plate in the acidic oxidation slot that hydrogen peroxide is added into
Row oxidation processes, concentration of volume percent are the sulfuric acid solution of 120g/L, and 95 DEG C of oxidizing temperature, oxidization time is 3 hours, washing
After obtain oxidation cathode plate.
Step C, closing step：It is molten that oxidation cathode plate obtained by step B is put into the sulfuric acid that concentration of volume percent is 50g/L
In liquid, the mass percent concentration of potassium permanganate is 20%, and closure temperature is 70 DEG C, and off-period is 5 hours, after washing
To closing cathode plate.
Step D, curing process：Closing cathode plate obtained by step C is put into calcining furnace and carries out curing process, sets stove
Heating rate is 50 DEG C, and when furnace is 300 DEG C, cooling rate is 120 DEG C, the curing process 3 under the conditions of temperature is 400 DEG C
Hour, obtain novel corrosion resistant cathode plate.
The novel corrosion resistant cathode plate and conventional cathode plate being prepared as cathode plate, in same zinc electrolyte into
Row zinc electrolysis obtains that zinc is precipitated, and through measuring and calculating, the tank voltage that novel corrosion resistant cathode plate makees the cathode plate of zinc electrolysis reduces
0.02V, power consumption reduce 18.67kwh/ (t electricity zinc), and adhesive force of the zinc on cathode plate is precipitated and declines, stripping zinc is easy；Through resistance to
Corrosive nature detects, and service life extends 102 days.
Embodiment 2
Step A, pretreatment process：It is molten that the sulfuric acid that concentration of volume percent is 100g/L is put into after conventional cathode plate is polished
It is impregnated in liquid, temperature 50 C, the time is 3 hours, then carries out alkali cleaning, washing, polishing and ultrasonic washing, obtains pretreatment cathode
Plate.
Step B, oxidation operation：Will after pretreatment obtained by step A cathode plate in the acidic oxidation slot that hydrogen peroxide is added into
Row oxidation processes, concentration of volume percent are the sulfuric acid solution of 180g/L, and 80 DEG C of oxidizing temperature, oxidization time is 6 hours, washing
After obtain oxidation cathode plate.
Step C, closing step：Oxidation cathode plate obtained by step B is put into the sulfuric acid that concentration of volume percent is 120g/L
In solution, the mass percent concentration of potassium permanganate is 15%, and closure temperature is 90 DEG C, and off-period is 3 hours, after washing
Obtain closing cathode plate.
Step D, curing process：Closing cathode plate obtained by step C is put into calcining furnace and carries out curing process, sets stove
Heating rate is 100 DEG C, and when furnace is 310 DEG C, cooling rate is 80 DEG C, the curing process 1 under the conditions of temperature is 500 DEG C
Hour, obtain novel corrosion resistant cathode plate.
The novel corrosion resistant cathode plate and conventional cathode plate being prepared as cathode plate, in same zinc electrolyte into
Row zinc electrolysis obtains that zinc is precipitated, and through measuring and calculating, the tank voltage that novel corrosion resistant cathode plate makees the cathode plate of zinc electrolysis reduces
0.08V, power consumption reduce 27.43kwh/ (t electricity zinc), and adhesive force of the zinc on cathode plate is precipitated and declines, stripping zinc is easy；Through resistance to
Corrosive nature detects, and service life extends 125 days.
Embodiment 3
Step A, pretreatment process：It is molten that the sulfuric acid that concentration of volume percent is 80g/L is put into after conventional cathode plate is polished
It is impregnated in liquid, 65 DEG C of temperature, the time is 2 hours, then carries out alkali cleaning, washing, polishing and ultrasonic washing, obtains pretreatment cathode
Plate.
Step B, oxidation operation：Will after pretreatment obtained by step A cathode plate in the acidic oxidation slot that hydrogen peroxide is added into
Row oxidation processes, concentration of volume percent are the sulfuric acid solution of 150g/L, and 85 DEG C of oxidizing temperature, oxidization time is 4 hours, washing
After obtain oxidation cathode plate.
Step C, closing step：It is molten that oxidation cathode plate obtained by step B is put into the sulfuric acid that concentration of volume percent is 80g/L
In liquid, the mass percent concentration of potassium permanganate is 17%, and closure temperature is 80 DEG C, and off-period is 4 hours, after washing
To closing cathode plate.
Step D, curing process：Closing cathode plate obtained by step C is put into calcining furnace and carries out curing process, sets stove
Heating rate is 70 DEG C, and when furnace is 315 DEG C, cooling rate is 90 DEG C, the curing process 2 under the conditions of temperature is 440 DEG C
Hour, obtain novel corrosion resistant cathode plate.
The novel corrosion resistant cathode plate and conventional cathode plate being prepared as cathode plate, in same zinc electrolyte into
Row zinc electrolysis obtains that zinc is precipitated, and through measuring and calculating, the tank voltage that novel corrosion resistant cathode plate makees the cathode plate of zinc electrolysis reduces
0.05V, power consumption reduce 23.48kwh/ (t electricity zinc), and adhesive force of the zinc on cathode plate is precipitated and declines, stripping zinc is easy；Through resistance to
Corrosive nature detects, and service life extends 118 days.
Embodiment 4
Step A, pretreatment process：It is molten that the sulfuric acid that concentration of volume percent is 90g/L is put into after conventional cathode plate is polished
It is impregnated in liquid, temperature 70 C, the time is 2.5 hours, then carries out alkali cleaning, washing, polishing and ultrasonic washing, and it is cloudy to obtain pretreatment
Pole plate.
Step B, oxidation operation：Will after pretreatment obtained by step A cathode plate in the acidic oxidation slot that hydrogen peroxide is added into
Row oxidation processes, concentration of volume percent are the sulfuric acid solution of 160g/L, and 90 DEG C of oxidizing temperature, oxidization time is 5 hours, washing
After obtain oxidation cathode plate.
Step C, closing step：It is molten that oxidation cathode plate obtained by step B is put into the sulfuric acid that concentration of volume percent is 90g/L
In liquid, the mass percent concentration of potassium permanganate is 19%, and closure temperature is 86 DEG C, and off-period is 4.5 hours, after washing
Obtain closing cathode plate.
Step D, curing process：Closing cathode plate obtained by step C is put into calcining furnace and carries out curing process, sets stove
Heating rate is 90 DEG C, and when furnace is 318 DEG C, cooling rate is 110 DEG C, curing process under the conditions of temperature is 480 DEG C
2.4 hours, obtain novel corrosion resistant cathode plate.
The novel corrosion resistant cathode plate and conventional cathode plate being prepared as cathode plate, contain high F same-Zinc electricity
Zinc electrolysis is carried out in solution liquid, obtains that zinc is precipitated, through measuring and calculating, novel corrosion resistant cathode plate makees the cathode plate and conventional cathode of zinc electrolysis
Plate is compared, and tank voltage reduces 0.06V, and power consumption reduces 35.17kwh/ (t electricity zinc), and attachment of the zinc on cathode plate is precipitated
Power is relatively low, and stripping zinc is relatively easy；It is detected through corrosion resistance, service life is grown 90 days.
Comparative example 1
Step A：Cathode plate surface processing：Sandblasting is carried out to cathode plate surface by the way of dry spray first, then with dense
The sodium hydroxide solution alkali cleaning that degree is 8%, with the salpeter solution pickling of bulking value a concentration of 20%.
Step B, it sprays：It is 200 μm of epoxy zinc chromate primers, the weight of paint and curing agent in 2 thickness of cathode plate surface sprayed coating
Amount is than being 8：1, it is dried in the air dry oven that temperature is 60 DEG C, then spray the organic-silicon-modified resin that 2 thickness are 400 μm
Coating, the weight ratio with curing agent are 10：1, cure in the air dry oven that temperature is 60 DEG C, finally sprays 2 thickness
For 300 μm of polysiloxanes antisepsis finishing paint, the weight ratio with curing agent is 25：2, then it is placed in the forced air drying that temperature is 60 DEG C
Cure in case, obtains the Zinc electrolysis cathode plate of corrosion-inhibiting coating.
The Zinc electrolysis cathode plate and conventional cathode plate of the corrosion-inhibiting coating being prepared as Zinc electrolysis negative plate, same
Zinc electrolysis is carried out in one zinc electrolyte, obtains that zinc is precipitated, through measuring and calculating, the Zinc electrolysis of corrosion-inhibiting coating makes the moon of zinc electrolysis of cathode plate
The tank voltage of pole plate is suitable, and power consumption is suitable, and adhesive force of the zinc on cathode plate is precipitated and does not occur significantly changing；Through corrosion resistance
It can detect, service life extends 50 days, that is, has corrosion resistance.
The Zinc electrolysis cathode plate of the corrosion-inhibiting coating being prepared and conventional cathode plate as zinc electrolysis cathode plate,
It is same to contain high F-Zinc electrolyte in carry out zinc electrolysis, obtain that zinc is precipitated, through measuring and calculating, the Zinc electrolysis of corrosion-inhibiting coating makes of cathode plate
For the cathode plate of zinc electrolysis compared with conventional cathode plate, tank voltage is suitable, and power consumption is suitable, and adhesive force of the zinc on cathode plate is precipitated not
Change；It is detected through corrosion resistance, service life is suitable, that is, does not have resistance to high F-Corrosive power.
It is found from embodiment 1-4, the novel corrosion resistant cathode plate that the present invention is prepared has corrosion resistance, cathode
The service life of plate is obviously prolonged 90 days or more；Resistance to high F-Corrosive power, the structure of zinc raw material can be changed, reduce raw material purchase
It is set to this；Adhesive force of the zinc on cathode plate, which is precipitated, to be reduced, and stripping zinc is easy, and tank voltage and power consumption reduce, and can reduce zinc electrolysis
Production cost improves productivity effect.
Compared with comparative example 1, the preparation project investment of the corrosion-resistant zinc cathode plate of the utility model is small, and technological process is simple, pair sets
Standby material requirement is low, and operation is simple, easily realizes mass production, and low energy consumption, pollution-free, and three wastes generate；Can obviously it change
Kind stripping zinc efficiency, reduces tank voltage, reduces zinc power consumption, while having resistance to high F-Corrosive power；The present invention is a kind of economical, high
The preparation method of the novel corrosion resistant zinc cathode plate of effect, application prospect are extensive.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
All any modification, equivalent and improvement etc., should all be included in the protection scope of the present invention made by within refreshing and principle.
Claims (7)
1. a kind of preparation method of corrosion-resistant zinc cathode plate, it is characterised in that:Include the following steps：
A. pretreatment process：Conventional cathode plate is pre-processed, sundries, the greasy dirt of conventional cathode plate surface are removed, is broken simultaneously
Bad cathode plate surface densification aluminum oxide obtains pretreatment cathode plate；
B. oxidation operation：Pretreatment cathode plate obtained by step A is subjected to oxidation processes in acidic oxidation slot, obtains oxidation cathode
Plate；
C. closing step：Oxidation cathode plate obtained by step B is put into liquor potassic permanganate, sulfuric acid mass volume ratio is dense in solution
Degree is 50~120g/L, and the mass percent concentration of potassium permanganate is 15%~20%, and closure temperature is 70~90 DEG C, off-period
It is 3~5 hours, carries out oxidation closing micro hole, obtain closing cathode plate；
D. curing process：Cathode plate curing process 1~3 hour under the conditions of temperature is 400~500 DEG C will be closed obtained by step C,
Obtain corrosion-resistant cathode plate.
2. a kind of preparation method of corrosion-resistant zinc cathode plate according to claim 1, it is characterised in that：In the step A,
The pretreatment includes polishing, acidic leaching, alkali cleaning, washing, polishing and ultrasonic washing.
3. a kind of preparation method of corrosion-resistant zinc cathode plate according to claim 2, it is characterised in that：The acidic leaching
Leaching condition be：A concentration of 50~100g/L of sulfuric acid mass volume ratio, 50~75 DEG C of soaking temperature, soaking time are 1~3 small
When.
4. according to a kind of preparation method of corrosion-resistant zinc cathode plate described in claim 1, it is characterised in that：The step B
In, pretreatment cathode plate obtained by step A is placed on added with carrying out oxidation processes in the acidic oxidation slot of hydrogen peroxide and sulfuric acid.
5. according to a kind of preparation method of corrosion-resistant zinc cathode plate described in claim 4, it is characterised in that：The step B
In, a concentration of 120~180g/L of sulfuric acid mass volume ratio, 80~95 DEG C of oxidizing temperature, oxidization time is 3~6 hours, oxidation knot
Cathode plate is washed after beam, obtains oxidation cathode plate.
6. according to a kind of preparation method of corrosion-resistant zinc cathode plate described in claim 1, it is characterised in that：The step C
In, sealing condition is：Solution system is sulfuric acid system, is washed to cathode plate after closing, and closing cathode plate is obtained.
7. a kind of preparation method of corrosion-resistant zinc cathode plate according to claim 1, it is characterised in that：In the step D,
Stove heating rate is 50~100 DEG C/h, and for furnace at 300 DEG C or more, cooling rate is 80~120 DEG C/h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611141553.4A CN106480478B (en) | 2016-12-12 | 2016-12-12 | A kind of preparation method of novel corrosion resistant zinc cathode plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611141553.4A CN106480478B (en) | 2016-12-12 | 2016-12-12 | A kind of preparation method of novel corrosion resistant zinc cathode plate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106480478A CN106480478A (en) | 2017-03-08 |
| CN106480478B true CN106480478B (en) | 2018-08-24 |
Family
ID=58284706
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611141553.4A Active CN106480478B (en) | 2016-12-12 | 2016-12-12 | A kind of preparation method of novel corrosion resistant zinc cathode plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106480478B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111519126A (en) * | 2020-06-19 | 2020-08-11 | 湖南平方科技有限公司 | Preparation method of novel electrolytic zinc cathode plate anticorrosive layer |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1399010A (en) * | 2002-02-06 | 2003-02-26 | 昆明理工大学 | Making process of durable stainless steel cathode plate for copper electrolyzing refining |
| JP2007191782A (en) * | 2005-12-21 | 2007-08-02 | Nikko Kinzoku Kk | Method for producing cadmium |
| CN101781780A (en) * | 2010-04-06 | 2010-07-21 | 中南大学 | Method for improving corrosion resistance of cathode aluminum plate for zinc electrolysis |
| CN101809207A (en) * | 2007-08-28 | 2010-08-18 | 美铝公司 | Corrosion resistant aluminum alloy substrates and methods of producing the same |
| CN101886284A (en) * | 2010-07-09 | 2010-11-17 | 桂林理工大学 | Aluminum and aluminum alloy chemically bronzing method |
| CN103695983A (en) * | 2013-12-16 | 2014-04-02 | 陕西师范大学 | Preparation method of size-controllable aluminum surface periodic nano pit texture |
| CN106191962A (en) * | 2016-08-30 | 2016-12-07 | 无锡库帕油品有限公司 | A kind of aluminum and Aluminum Alloy Room Temperature environmental protection sealer and preparation method thereof |
-
2016
- 2016-12-12 CN CN201611141553.4A patent/CN106480478B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1399010A (en) * | 2002-02-06 | 2003-02-26 | 昆明理工大学 | Making process of durable stainless steel cathode plate for copper electrolyzing refining |
| JP2007191782A (en) * | 2005-12-21 | 2007-08-02 | Nikko Kinzoku Kk | Method for producing cadmium |
| CN101809207A (en) * | 2007-08-28 | 2010-08-18 | 美铝公司 | Corrosion resistant aluminum alloy substrates and methods of producing the same |
| CN101781780A (en) * | 2010-04-06 | 2010-07-21 | 中南大学 | Method for improving corrosion resistance of cathode aluminum plate for zinc electrolysis |
| CN101886284A (en) * | 2010-07-09 | 2010-11-17 | 桂林理工大学 | Aluminum and aluminum alloy chemically bronzing method |
| CN103695983A (en) * | 2013-12-16 | 2014-04-02 | 陕西师范大学 | Preparation method of size-controllable aluminum surface periodic nano pit texture |
| CN106191962A (en) * | 2016-08-30 | 2016-12-07 | 无锡库帕油品有限公司 | A kind of aluminum and Aluminum Alloy Room Temperature environmental protection sealer and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106480478A (en) | 2017-03-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106757177B (en) | A kind of preparation method of band coating anti-corrosion zinc cathode aluminum plate | |
| CN105088309B (en) | A kind of energy-efficient anode oxidative treatment method of pack alloy | |
| RU97112490A (en) | METHOD FOR PRODUCING COPPER METAL POWDER, COPPER OXIDES AND COPPER FOIL | |
| CN102953093A (en) | Cathode plate anticorrosive coating for zinc electrowinning and preparation method of cathode plate anticorrosive coating | |
| CN108441918A (en) | A kind of aluminum alloy surface treatment process | |
| JP6855833B2 (en) | Manufacturing method of Sn-plated steel sheet and Sn-plated steel sheet | |
| US10865491B2 (en) | Sn-based alloy plated steel sheet | |
| CN108754396A (en) | The preparation method of cathode plate for electrolyzing zinc surface anticorrosion erosion resisting coating | |
| CN106480478B (en) | A kind of preparation method of novel corrosion resistant zinc cathode plate | |
| CN103334132A (en) | Method for preparing aluminum-magnesium alloy membrane through electro-deposition at room temperature | |
| CN101643928B (en) | Method for electrodepositing phosphate/metal composite film on cathode of surface of magnesium alloy | |
| CN108893760A (en) | A kind of production method of lithium ion collector corronil foil | |
| CN103060842A (en) | Method for preparing electrodeposited cobalt under large flow | |
| CN106835163B (en) | Cleaning process for Ni―Ti anode surface noble metal plated film | |
| CN102787346B (en) | Plasma cleaning process before clean and environment-friendly plated film | |
| CN210733483U (en) | High-strength galvanized inner strip | |
| CN102268714B (en) | A kind of electrochemical pre-treatment method of electrolytic extraction of gallium negative electrode | |
| CA3065072A1 (en) | Blasting process for lead anode plates for electro-obtaining zinc | |
| JP6852454B2 (en) | Manufacturing method of Sn-based alloy-plated steel sheet and Sn-based alloy-plated steel sheet | |
| CN102453926A (en) | Method for obtaining high-purity zinc by electrolyzing zinc chloride | |
| WO2016125911A1 (en) | Tin-plated steel sheet, chemical conversion treated steel sheet and manufacturing method therefor | |
| WO2014132735A1 (en) | Surface-treated steel sheet manufacturing method | |
| CN102084032B (en) | Tin-plated steel plate and process for producing the same | |
| US4160703A (en) | Nonplating cathode and method for producing same | |
| JPS6028918B2 (en) | Post-treatment method for non-plated side of single-sided zinc-based electroplated steel sheet |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20221221 Address after: 421500 Shuikou Shan Zhen Xinhua Cun, Changning City, Hengyang City, Hunan Province Patentee after: Hunan Zhuye Nonferrous Metals Co.,Ltd. Address before: No.10 Lujiang Road, Tianyuan District, Zhuzhou City, Hunan Province, 412007 Patentee before: ZHUZHOU SMELTER GROUP Co.,Ltd. |