CN106435263A - Making method of energy-saving corrosion-resistant Pb-Ag-La alloy anode plate - Google Patents
Making method of energy-saving corrosion-resistant Pb-Ag-La alloy anode plate Download PDFInfo
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- CN106435263A CN106435263A CN201610893044.0A CN201610893044A CN106435263A CN 106435263 A CN106435263 A CN 106435263A CN 201610893044 A CN201610893044 A CN 201610893044A CN 106435263 A CN106435263 A CN 106435263A
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C11/00—Alloys based on lead
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/03—Making non-ferrous alloys by melting using master alloys
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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
- C25C1/16—Electrolytic production, recovery or refining of metals by electrolysis of solutions of zinc, cadmium or mercury
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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
- C25C7/02—Electrodes; Connections thereof
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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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- Metallurgy (AREA)
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Abstract
The invention discloses a making method of an energy-saving corrosion-resistant Pb-Ag-La alloy anode plate. The making method comprises the following steps of A, preparing a blank, B, cooling and rolling, C, cutting and punching, D, casting a copper-lead cross beam and E, welding a punched-plate. According to the making method, rare earth lanthanum is added when the Pb-Ag-La alloy anode plate is made, and compared with a Pb-Ag anode alloy without rare earth elements, a made anode alloy has lower corrosion rate; after rare earth lanthanum is added, anode mud is sheeted and is prone to fall off, and a cell voltage rising situation is improved; the anode strength of Pb-Ag-La rare earth is improved, an anode deformation situation in an electrodeposition process is improved; and the production cost of a zinc electrodeposited anode plate is reduced. A blank plate is rolled repeatedly, the performances like plate material compactness are improved; a punching mode is adopted for making the Pb-Ag-La alloy anode plate, a surface area of a porous anode is increased, the apparent appearance current density during working of the anode is reduced, and anode oxygen evolution potential is reduced. The making method is simple in technology, energy consumption of the made Pb-Ag-La alloy anode plate is reduced, and the corrosion resistance of the Pb-Ag-La alloy anode plate is improved.
Description
Technical field
The invention belongs to metallurgical technology technical field, is related to a kind of simple structure, the Pb- of energy-saving corrosion-resisting erosion easy to use
The manufacture method of Ag-La alloy anode plate.
Background technology
The industry of electrolytic engineering, particularly electrochemical industry and electrometallurgy all be unable to do without electrode material.According to ASSOCIATE STATISTICS, anode
Energy consumption of reaction accounts for Zinc electrolysis total energy consumption more than 53%, and the precipitation of oxygen accounts for more than the 45% of anode reaction energy consumption.In recent years, for sun
The study on the modification of pole material constantly has been reported that, adds different-alloy element, coating and structure, the electrode system with premium properties
Become.
Lead base coated anode：Anode surface coats one layer of electrocoat with electrocatalysises, it is possible to decrease Oxygen anodic evolution mistake
Current potential, reaches the purpose of consumption reduction, IrO2、RuO2With good analysis oxygen electro catalytic activity and high chemical stability, it is considered to be
Preferable electrocatalysis material.But the increase with use time, reduces degree reduction, and analysis reason is that face coat is progressively molten
Solution, the anode is had problems in cost of manufacture and service life, limits the popularization and application of such anode.
Lead based alloy anodes：With long service life, preparation process is simple, with conventional lead silver production technology difference not
Greatly.As lead silver calcium strontium anode, decay resistance and mechanical property are obviously improved, and reduce silver content, but such alloy anode Ag,
Ca loss is big, is not easily recycled, and earth of positive pole crust is hard, is difficult removal and causes tank voltage to improve；Pb-Ag-Co alloy anode, adds
Oxygen anodic evolution current potential can effectively be reduced after metal Co, improve its corrosion resistance, but due to Co in Pb melt dissolubility pole
Micro-, its preparation method complexity, limit the scale application of such alloy anode.
Lead base porous anode：Porous anode surface area increases, and reduces apparent current density during anode working, reduces anode
Oxygen evolution potential；Porous lead anode can also reduce the generation of the earth of positive pole, reduce anodic attack speed, improve product quality；Porous sun
Pole can also reduce anode material usage amount, reduce anode weight and use cost.
Rustless steel base electrode：With PbO2Coated anode for representing is most commonly seen, and which is mainly obtained by electrodeposition process.Mesh
Before, adding carbide, metallic salt and introduction nanotechnology in the plating solution improves anode performance and becomes the focus of research.Add
CNT has refined β-PbO2Crystal grain and its electro catalytic activity is increased, the tank voltage of the novel electrode can be dropped than Pb-1%Ag anode
Low 160mV, but the problem of electrode corrosion-resistant is not improved.
Various electrode anode plates all have oneself all advantage and shortcoming, therefore combine all kinds of zinc for having been developed over coming at present
The advantage and limitation of electrodeposition positive plate, researches and develops a kind of manufacture method of Zinc electrolysis Pb-Ag-La alloy anode plate to manufacture
Go out to save processing charges, reduce process equipment, save equipment electricity consumption, product and reach that density is good, good conductivity, body are good, use
Year limit for length, low-cost positive plate meet present electrode anode plate market and have important value.
Content of the invention
It is an object of the invention to provide a kind of system of the Pb-Ag-La alloy anode plate of the energy-saving corrosion-resisting erosion of process is simple
Make method.
The object of the present invention is achieved like this, comprises the following steps A：Prepare blank, B:Cold rolling, C：Cutting is rushed
Hole, D：Casting copper-lead crossbeam, E：Welding punched-plate,
A：Prepare blank
First make lead lanthanum intermediate alloy stand-by, then lead bullion is put in lead melting furnace, add Ag, Ag to melt in lead liquid after lead fusing
Add the lead lanthanum intermediate alloy liquid for preparing after change, foundry alloy liquid is formed, stir, after slag hitting, be cast in mould and formed
Blank flat；
B：Cold rolling
Blank flat is cooled down and is placed more than one week, using milling train, blank flat is rolled；
C：Cutting punching
Punching molding is cut out to plate face according to relative dimensions and forms punched-plate；
D：Casting copper-lead crossbeam
Tongliang County is scrubbed, in electroplating surfaces with tin after heating, tin plating Tongliang County is placed in mould, casting lead liquid wraps up tin plating Tongliang County and forms copper-lead
Crossbeam；
E：Welding punched-plate
Using gas welding technique, punched-plate is made Zinc electrolysis positive plate with copper-lead beam welding.
The inventive method adds Rare Earth Lanthanum when positive plate is made, and the anode alloy of making is relatively not added with rare earth element Pb-
Ag anode alloy rate of corrosion reduces, meanwhile, improve 0#Zinc output capacity；The Pb-Ag alloy anode corrosion product earth of positive pole is finer and close,
Difficult for drop-off, cause tank voltage to raise, after adding Rare Earth Lanthanum, the earth of positive pole is in the form of sheets, easy to fall off, improves tank voltage rising condition；
Lead silver lanthanum rare earth anode intensity is improved, and improves electrolytic deposition process anode deformation；The increase of rare-earth elements of lanthanum can reduce Pb-Ag
The content of Ag in anode（0.3%-0.5%）, reduce the production cost of Zinc electrolysis positive plate.Repeat-rolling is carried out to blank flat,
Increase the performances such as plate compactness, make positive plate and punch pattern is adopted, porous anode surface area increases, when reducing anode working
Apparent current density, reduce Oxygen anodic evolution current potential.The inventive method process is simple, not only reduces the energy of the positive plate of making
Consumption, also improves the corrosivity of positive plate.
Description of the drawings
Fig. 1 is this process flow diagram；
The structural representation of the positive plate that Fig. 2 is produced for present invention process；
In figure, 1- pole plate body, 2- lead crossbeam, 3- conduction copper rod.
Specific embodiment
The present invention is further illustrated below in conjunction with the accompanying drawings, but by any way the present invention must not be any limitation as,
Based on present invention teach that any change for being made or improvement, belong to protection scope of the present invention.
As shown in Figure 1 and 2, the present invention comprises the following steps A：Prepare blank, B:Cold rolling, C：Cutting punching, D：Pour
Cast copper lead crossbeam, E：Welding punched-plate.
A：Prepare blank
Lead bullion is put in lead melting furnace, after lead fusing, adds Ag, Ag to add in the middle of the lead lanthanum for preparing after melting in lead liquid
Aluminium alloy, forms foundry alloy liquid, stirs, after slag hitting, is cast to formation blank flat in mould；
B：Cold rolling
Blank flat is cooled down and is placed more than one week, using milling train, blank flat is rolled；
C：Cutting punching
Punching molding is cut out to plate face according to relative dimensions and forms punched-plate；
D：Casting copper-lead crossbeam
Tongliang County is scrubbed, in electroplating surfaces with tin after heating, tin plating Tongliang County is placed in mould, casting lead liquid wraps up tin plating Tongliang County and forms copper-lead
Crossbeam；
E：Welding punched-plate
Using gas welding technique, punched-plate is made Zinc electrolysis positive plate with copper-lead beam welding.
In step A, Ag is 0.2% ~ 0.5% with the mass ratio of lead.
In step A, the lanthanum of lead lanthanum intermediate alloy is 0.5% ~ 2.0% with the mass ratio of lead.
In step B, rolling number of times is positive passage 3 ~ 5 times, anti-passage 3 ~ 4 times.
In step C, plate face is can be sized to as 1.2m2、1.6 m2With 3.2 m2.
Row punching is punching in step C, is crisscross arranged between the punching of adjacent row.
In step C, punching is circular port, and aperture is 2 ~ 10cm.
In the step E gas welding technique be using combustion-supporting gas O2With fuel gas C2H2Copper-lead crossbeam is welded with punched-plate
Pick up and.
Operation principle of the present invention and work process：
The inventive method adds Rare Earth Lanthanum when positive plate is made, and the anode alloy of making is relatively not added with rare earth element Pb- Ag
Anode alloy rate of corrosion reduces, while after adding Rare Earth Lanthanum, the earth of positive pole is in the form of sheets, easy to fall off, improves tank voltage rising condition；Lead
Silver-colored lanthanum rare earth anode intensity is improved, and improves electrolytic deposition process anode deformation；The increase of rare-earth elements of lanthanum can reduce Pb-Ag sun
The extremely content of middle Ag（0.3%-0.5%）, reduce the production cost of Zinc electrolysis positive plate.Repeat-rolling is carried out to blank flat, is increased
The performances such as splice material compactness, make positive plate and adopt punch pattern, and porous anode surface area increases, during reduction anode working
Apparent current density, reduces Oxygen anodic evolution current potential.The inventive method process is simple, not only reduces the energy of the positive plate of making
Consumption, also improves the corrosivity of positive plate.
Embodiment 1
First in lead, lanthanum intermediate alloy is stand-by, and wherein lanthanum is 0.5% with the mass ratio of lead, then lead bullion is put in lead melting furnace, treats lead
Add Ag, the Ag of lead bullion quality 0.5% to add, after melting in lead bullion liquid, the lead lanthanum intermediate alloy liquid for preparing after fusing, formed
Foundry alloy liquid, stirs, after slag hitting, is cast to formation blank flat in mould；Blank flat is cooled down and is placed more than one week, profit
The right way 3 times, 4 rollings in anti-road are carried out to blank flat with milling train；Punching molding is cut out according to relative dimensions to be formed to plate face
Punched-plate, pore size 2cm；Tongliang County is scrubbed, in electroplating surfaces with tin after heating, tin plating Tongliang County is placed in mould, casting lead liquid parcel
Tin plating Tongliang County forms copper-lead crossbeam；Using gas welding technique, punched-plate is made Zinc electrolysis positive plate with copper-lead beam welding.System
The Pb-Ag-La anode for obtaining, a size of 1.2m2, tank voltage 3.285, current efficiency is up to 91%, 0#Zinc yield 99%, power consumption
2958kWh/t·Zn.
Embodiment 2
First in lead, lanthanum intermediate alloy is stand-by, and wherein lanthanum is 2.0% with the mass ratio of lead, then lead bullion is put in lead melting furnace, treats lead
Add Ag, the Ag of lead bullion quality 0.2% to add, after melting in lead bullion liquid, the lead lanthanum intermediate alloy liquid for preparing after fusing, formed
Foundry alloy liquid, stirs, after slag hitting, is cast to formation blank flat in mould；Blank flat is cooled down and is placed more than one week, profit
The right way 5 times, 3 rollings in anti-road are carried out to blank flat with milling train；Punching molding is cut out according to relative dimensions to be formed to plate face
Punched-plate, pore size 10cm；Tongliang County is scrubbed, in electroplating surfaces with tin after heating, tin plating Tongliang County is placed in mould, lead liquid bag of casting
Wrap up in tin plating Tongliang County and form copper-lead crossbeam；Using gas welding technique, punched-plate is made Zinc electrolysis positive plate with copper-lead beam welding.
Obtained Pb-Ag-La anode, a size of 1.2m2, tank voltage 3.278, current efficiency is up to 92%, 0#Zinc yield 97%, power consumption
2920kWh/t·Zn.
Embodiment 3
First in lead, lanthanum intermediate alloy is stand-by, and wherein lanthanum is 1.0% with the mass ratio of lead, then lead bullion is put in lead melting furnace, treats lead
Add Ag, the Ag of lead bullion quality 0.3% to add, after melting in lead bullion liquid, the lead lanthanum intermediate alloy liquid for preparing after fusing, formed
Foundry alloy liquid, stirs, after slag hitting, is cast to formation blank flat in mould；Blank flat is cooled down and is placed more than one week, profit
The right way 4 times, 3 rollings in anti-road are carried out to blank flat with milling train；Punching molding is cut out according to relative dimensions to be formed to plate face
Punched-plate, pore size 5cm；Tongliang County is scrubbed, in electroplating surfaces with tin after heating, tin plating Tongliang County is placed in mould, casting lead liquid parcel
Tin plating Tongliang County forms copper-lead crossbeam；Using gas welding technique, punched-plate is made Zinc electrolysis positive plate with copper-lead beam welding.System
The Pb-Ag-La anode for obtaining, a size of 1.6m2, tank voltage 3.351, current efficiency is up to 91%, 0#Zinc yield 98%, power consumption
3018kWh/t·Zn.
Claims (8)
1. a kind of manufacture method of the Pb-Ag-La alloy anode plate of energy-saving corrosion-resisting erosion, is characterized in that：Comprise the following steps A：System
Standby blank, B:Cold rolling, C：Cutting punching, D：Casting copper-lead crossbeam, E：Welding punched-plate；
A：Prepare blank
First make lead lanthanum intermediate alloy stand-by, then lead bullion is put in lead melting furnace, add Ag, Ag to melt in lead liquid after lead fusing
Add the lead lanthanum intermediate alloy liquid for preparing after change, foundry alloy liquid is formed, stir, after slag hitting, be cast in mould and formed
Blank flat；
B：Cold rolling
Blank flat is cooled down and is placed more than one week, using milling train, blank flat is rolled；
C：Cutting punching
Punching molding is cut out to plate face according to relative dimensions and forms punched-plate；
D：Casting copper-lead crossbeam
Tongliang County is scrubbed, in electroplating surfaces with tin after heating, tin plating Tongliang County is placed in mould, casting lead liquid wraps up tin plating Tongliang County and forms copper-lead
Crossbeam；
E：Welding punched-plate
Using gas welding technique, punched-plate is made Zinc electrolysis positive plate with copper-lead beam welding.
2. according to claim 1 energy-saving corrosion-resisting erosion Pb-Ag-La alloy anode plate manufacture method, it is characterized in that：Institute
It is 0.2% ~ 0.5% with the mass ratio of lead to state Ag in step A.
3. the manufacture method of the Pb-Ag-La alloy anode plate of energy-saving corrosion-resisting erosion according to claim 1 or claim 2, is characterized in that：
In step A, the lanthanum of lead lanthanum intermediate alloy is 0.5% ~ 2.0% with the mass ratio of lead.
4. the manufacture method of the Pb-Ag-La alloy anode plate of energy-saving corrosion-resisting erosion according to claim 1 or claim 2, is characterized in that：
In step B, rolling number of times is positive passage 3 ~ 5 times, anti-passage 3 ~ 4 times.
5. the manufacture method of the Pb-Ag-La alloy anode plate of energy-saving corrosion-resisting erosion according to claim 1 or claim 2, is characterized in that：
In step C, plate face is can be sized to as 1.2m2、1.6 m2With 3.2 m2.
6. the manufacture method of the Pb-Ag-La alloy anode plate of energy-saving corrosion-resisting erosion according to claim 1 or claim 2, is characterized in that：
Row punching is punching in step C, is crisscross arranged between the punching of adjacent row.
7. the manufacture method of the Pb-Ag-La alloy anode plate of energy-saving corrosion-resisting erosion according to claim 1 or claim 2, is characterized in that：
In step C, punching is circular port, and aperture is 2 ~ 10cm.
8. according to claim 1 energy-saving corrosion-resisting erosion Pb-Ag-La alloy anode plate manufacture method, it is characterized in that：Described
In step E gas welding technique be using combustion-supporting gas O2With fuel gas C2H2Copper-lead crossbeam and punched-plate are welded.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107012361A (en) * | 2017-04-10 | 2017-08-04 | 云南驰宏锌锗股份有限公司 | A kind of electrodepositing zinc rare earth alloy anode and preparation method thereof |
| CN110423917A (en) * | 2018-07-31 | 2019-11-08 | 荷贝克电池有限责任及两合公司 | Metal, electrode and battery |
| CN113913870A (en) * | 2021-11-03 | 2022-01-11 | 昆明冶金研究院有限公司 | Anode plate for low-deformation high-electric-efficiency zinc electrolysis and preparation method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107012361A (en) * | 2017-04-10 | 2017-08-04 | 云南驰宏锌锗股份有限公司 | A kind of electrodepositing zinc rare earth alloy anode and preparation method thereof |
| CN110423917A (en) * | 2018-07-31 | 2019-11-08 | 荷贝克电池有限责任及两合公司 | Metal, electrode and battery |
| CN113913870A (en) * | 2021-11-03 | 2022-01-11 | 昆明冶金研究院有限公司 | Anode plate for low-deformation high-electric-efficiency zinc electrolysis and preparation method thereof |
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| CN106435263B (en) | 2018-05-25 |
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Address after: 650031 No. 86 Yuantong North Road, Yunnan, Kunming Patentee after: Kunming Metallurgical Research Institute Co., Ltd Address before: 650031 No. 86 Yuantong North Road, Yunnan, Kunming Patentee before: Kunming Metallurgical Research Institute |