CN108360019B - Cathode steel bar capable of effectively inhibiting horizontal current and manufacturing method thereof - Google Patents
Cathode steel bar capable of effectively inhibiting horizontal current and manufacturing method thereof Download PDFInfo
- Publication number
- CN108360019B CN108360019B CN201810402908.3A CN201810402908A CN108360019B CN 108360019 B CN108360019 B CN 108360019B CN 201810402908 A CN201810402908 A CN 201810402908A CN 108360019 B CN108360019 B CN 108360019B
- Authority
- CN
- China
- Prior art keywords
- steel bar
- cathode steel
- cathode
- copper
- copper core
- 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
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
- C25C3/00—Electrolytic production, recovery or refining of metals by electrolysis of melts
- C25C3/06—Electrolytic production, recovery or refining of metals by electrolysis of melts of aluminium
- C25C3/08—Cell construction, e.g. bottoms, walls, cathodes
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Electrolytic Production Of Metals (AREA)
Abstract
A copper-cored cathode steel bar for effectively inhibiting horizontal current adopts copper to improve the conductivity of a cathode steel plate. A drilling hole (11) is axially arranged at the center of the cathode steel bar (1), a copper core (2) with the same diameter is arranged in the drilling hole (11), the copper core (2) is in close electrical contact with the cathode steel bar (1), and the length of the copper core (2) is 1/2-4/5, preferably 3/4 of the length of the cathode steel bar (1); the opening end of the cathode steel bar (1) is provided with a baffle (4), and the baffle (4) is welded on the cathode steel bar and slightly dented on the end surface of the cathode steel bar (1). The horizontal current can be effectively inhibited because the horizontal current is not easy to fall off, separate or damage in the using process.
Description
(I) technical field
The invention relates to a cathode steel bar, in particular to a copper core cathode steel bar capable of effectively inhibiting horizontal current and a manufacturing method thereof.
(II) background of the invention
In the production equipment of electrolytic aluminum and the like, the conventional cathode steel bar is a metal conductive part arranged in a steel bar groove at the bottom of a cathode carbon block of an aluminum electrolytic cell and is arranged along the length direction of the cathode carbon block, the cathode steel bar is made of low carbon steel, and the section shape along the length direction is a rectangle with equal area.
However, because the cathode steel bar arranged in the steel bar groove at the bottom of the cathode carbon block of the aluminum electrolysis cell is in a high-temperature area, the material resistivity of the cathode steel bar prepared by using the metal steel material is greatly increased and the resistance value is also sharply increased under the high-temperature working condition of electrolysis, so that the resistance value of the cathode steel bar along the length direction is far greater than the horizontal resistance value of the aluminum liquid at the upper part of the cathode carbon block of the aluminum electrolysis cell, namely the resistance value of the aluminum liquid layer along the length direction from the middle part of the aluminum electrolysis cell to the side part of the aluminum electrolysis cell along the cathode steel bar, the horizontal current of the aluminum liquid layer in the aluminum electrolysis cell can not be eliminated at all, the changes of the current trend, the magnetic field and the magnetic.
In order to overcome the defects of the prior art, the horizontal current in the aluminum electrolytic cell is eliminated, the magnetic cyclone fluctuation of the aluminum liquid is reduced, the current efficiency is improved, the generation of the horizontal current of the aluminum liquid in the aluminum electrolytic cell is eliminated, the reactive power consumption is reduced, and the electrolytic efficiency of the electrolytic cell is improved. For this reason, various solutions have been proposed, such as in CN202246908U, a copper-steel composite cathode steel bar is used as a metal conductive component of a cathode carbon block steel bar set of an aluminum electrolytic cell, and the method is characterized in that a copper plate is constructed near the inner end of the aluminum electrolytic cell in the length direction of the cathode steel bar, and the conductivity of the copper material is superior to that of aluminum liquid, so as to improve the conductivity of the inner end of the cathode steel bar, thereby eliminating the generation of horizontal current of the aluminum liquid in the aluminum electrolytic cell, reducing reactive power consumption, and improving the electrolytic efficiency of the aluminum electrolytic cell.
For example, CN202323049U discloses a cathode carbon block steel bar set structure of an aluminum electrolysis cell, which is mainly applied to a structure of a cathode carbon block steel bar set structure as a cathode conductor of the aluminum electrolysis cell, wherein two materials, i.e., cast metal and carbon tamping paste, are used as conductive filling media for gaps between a cathode steel bar and a cathode carbon block in the same steel bar slot of the cathode carbon block steel bar set, and the cathode carbon block and the cathode steel bar are assembled together to implement structural connection therebetween. The method reduces the voltage drop of the cathode structure of the aluminum electrolytic cell, eliminates the horizontal current of the cathode aluminum liquid, and realizes the purposes of energy-saving, consumption-reducing and production of the electrolytic aluminum.
In addition, in CN 104562088A, an electrolytic aluminum cathode conducting rod and a preparation method thereof are also disclosed, aiming at solving the technical problems of serious carburization, continuous increase of resistance and short service life in the use process of the existing cathode conducting rod. The electrolytic aluminum cathode conducting rod comprises a cathode steel rod, wherein a metal composite layer is arranged on the surface of the cathode steel rod, and the metal composite layer is metal aluminum, metal copper or a composite layer of aluminum-copper, aluminum-silver and copper-silver. The preparation method comprises the following steps: preparing a pickling solution; acid cleaning and rust removing are carried out on the cathode steel bar; covering a metal composite layer; and (6) grinding and polishing. The electrolytic aluminum cathode conducting rod has the excellent carburization prevention function, can be recycled, has long service life, is beneficial to reducing the maintenance cost of an electrolytic bath, and greatly reduces the steel consumption of the cathode conducting rod.
Further in WO03014423 a1 a cathode assembly is disclosed comprising a cathode block housing two primary cathode collector bars and a secondary cathode collector bar disposed between the primary collector bars. The primary collector bars each have an electrical interface with the cathode block that is equal to or larger in size than the electrical interface between the secondary collector bar and the cathode block. The primary collector bar is electrically connected to the cathode block along only one interior of the cathode block and the secondary collector bar is fully connected to the cathode block. This arrangement improves the current distribution through the cathode assembly by minimizing the amount of current passing through the ends of the cathode block. Also in WO2009055844 a1, a collector bar received in a recess in the cathode block of an electrolysis cell cathode; wherein the conductive rod comprises: a first conductor electrically connected to the bus bar system, the first conductor having one or more outer surfaces in electrical contact with the cathode block; and at least one second conductor having a lower electrical resistance than the first conductor, the second conductor disposed on at least one outer surface of the first conductor and in electrical contact with the first conductor. And in US 5976333A cathode steel bar is disclosed comprising a relatively low conductivity metal tube and a relatively high conductivity rod, said metal tube being clad and in contact with said rod, both having polygonal cross-sections.
The technical scheme has the problems that the mechanical strength of the cathode steel bar is reduced, the conductivity is improved slightly, the structure is not durable, the cathode steel bar is easy to fall off, separate or damage in the using process, and the effect of inhibiting horizontal current is not obvious.
Disclosure of the invention
[ problem to be solved ]
The invention aims to provide a copper core cathode steel bar which has high mechanical strength, firm and durable outer surface, can greatly improve the conductivity and effectively inhibit horizontal current;
the invention also aims to provide a copper core cathode steel bar which is firm in combination, high-temperature resistant and not easy to fall off;
the invention also aims to provide the copper core cathode steel bar which has low production cost, is convenient to process and produce and is convenient to assemble;
another object of the present invention is to provide a method for manufacturing a copper-cored cathode steel bar which is easy to manufacture and greatly improves the conductivity to suppress horizontal current;
the invention also aims to provide a method for manufacturing the copper core cathode steel bar, which can effectively improve the contact quality between the steel bar and the copper core;
[ technical solution ] A
The purpose is achieved through the following technical scheme:
a copper-core cathode steel bar is characterized in that copper is adopted to improve the conductivity of a cathode steel plate. The center of the cathode steel bar 1 is provided with a drill hole 11 along the axial direction, a copper core 2 with the same diameter is arranged in the drill hole 11, and the copper core 2 is in close electrical contact with the cathode steel bar 1, and the cathode steel bar is characterized in that: the length of the copper core 2 is 1/2 to 4/5, preferably 3/4 of the length of the cathode steel bar 1; and a baffle 4 is arranged at the open end of the cathode steel bar 1, and the baffle 4 is welded on the cathode steel bar and slightly dented on the end surface of the cathode steel bar 1.
The cross section of the cathode steel bar 1 is rectangular with the same area, and the copper core 2 is arranged at the center of the cathode steel bar 1; and the outer end surface of the copper core 2 is concave to the end surface of the cathode steel bar 1.
And a small hole 6 is arranged at the bottom end of the drilling hole 11 of the cathode steel bar 1. The centre of the aperture 6 is offset to the left by 1-3 mm, preferably 2 mm, from the end of the bore 11 of equal diameter.
The baffle 4 is semicircular and welded to the cathode steel bar 1.
A method for manufacturing a copper-core cathode steel bar is characterized by comprising the following steps: firstly, a drill hole 11 is processed in the center of a cathode steel bar 1, and the depth of the drill hole 11 is 1/2-4/5 of the length of the whole cathode steel bar 1; machining a small hole 6 transversely at the bottom end of said bore hole 11; pressing the processed copper core into the drill hole 11 of the cathode steel bar by using a hydraulic machine to ensure that the copper core 2 is in close electrical contact with the cathode steel bar 1 and the outer end surface of the copper core 2 is inwards sunken relative to the outer end surface of the cathode steel bar 1; and a semicircular baffle 4 is welded at the outer end face of the copper core 2, and the outer side face of the baffle is also inwards concave relative to the outer end face of the cathode steel bar.
And a small hole 6 is arranged at the bottommost end of the drilling hole 11 of the cathode steel bar 1, and the center of the small hole 6 is deviated 1-3 mm, preferably 2 mm, to the left side than the equal-diameter end of the drilling hole 11.
The cross section of the cathode steel bar 1 is rectangular with the same area, and the copper core 2 is arranged at the center of the cathode steel bar 1. The depth of the drilled hole is 3/4 of the length of the whole cathode steel bar.
[ PROBLEMS ] the present invention
Specifically, the advantages of the present invention are as follows:
the cathode steel bar has good mechanical strength and good wire performance, the resistivity is greatly reduced, the generation of horizontal current is effectively reduced, and the reactive power consumption is reduced, so that the electrolysis efficiency of an electrolytic cell is improved; in addition, the manufacturing method is quick, the production difficulty is low, and the realized cathode steel bar has a firm structure, is not easy to fall off, and is firm and durable.
(IV) description of the drawings
FIG. 1 is a cross-sectional view of a cathode steel bar after drilling;
FIG. 2 is a sectional view taken along line A-A of FIG. 1;
FIG. 3 is a cross-sectional view of a cathode steel rod after insertion into a copper core;
FIG. 4 is a sectional view taken along line B-B of FIG. 3;
FIG. 5 is an enlarged partial view of FIG. 3 and a side view after welding of the baffle;
FIG. 6 is an enlarged view of a portion of FIG. 1;
(V) detailed description of the preferred embodiments
In the production equipment of electrolytic aluminum and the like, a cathode steel bar is a metal conductive part arranged in a steel bar groove at the bottom of a cathode carbon block of an aluminum electrolytic cell and is arranged along the length direction of the cathode carbon block, the cathode steel bar is made of low carbon steel, and the section shape along the length direction is a rectangle with equal area. However, because the cathode steel bar arranged in the steel bar groove at the bottom of the cathode carbon block of the aluminum electrolysis cell is in a high-temperature area, the cathode steel bar prepared by the metal steel material has the material resistivity which is greatly increased and the resistance value which is also sharply increased under the high-temperature working condition of electrolysis, so that the resistance value of the cathode steel bar along the length direction is far greater than the horizontal resistance value of the aluminum liquid at the upper part of the cathode carbon block of the aluminum electrolysis cell.
For further clarity, when the cathode steel bar is placed horizontally, the bore hole is defined as the left side, the solid side is located on the right side (as shown in the drawing), the top plane of the cathode steel bar is referred to as the top side, and the blind end of the bore hole is referred to as the bottom end.
As shown in fig. 1 and fig. 2, the cathode steel bar is made of mild steel, the cross section along the length direction is in a rectangular or square shape with equal area, a drill hole with a diameter of 45-70 mm, preferably about 50 mm, is formed at the geometric center of the steel bar, the depth of the drill hole is 1200-1900 mm, preferably about 1500 mm, the depth of the drill hole is about 1/2-4/5, preferably about 3/4 of the length of the cathode steel bar 1, a drill hole 11 is axially arranged at the center of the cathode steel bar 1, a copper core 2 with equal diameter is placed in the drill hole 11, the copper core 2 is in close electrical contact with the cathode steel bar 1, and the length of the copper core 2 is about 1/2-4/5, preferably about 3/4 of the length of the cathode steel bar 1; in order to facilitate the installation of the copper core 2, a small hole 6 is arranged at the bottommost end of the drilling hole 11 of the cathode steel bar 1, the small hole 6 is punched downwards from the top surface of the cathode steel bar, and the center of the small hole 6 is deviated to the left side by 1-3 mm, preferably 2 mm, compared with the equal-diameter end of the drilling hole 11 (see the attached figure 6 in particular). The cross section of the cathode steel bar 1 is rectangular with the same area, and the copper core 2 is arranged at the center of the cathode steel bar 1. The depth of the drilled hole is 3/4 of the length of the whole cathode steel bar.
As shown in fig. 3-5, the processed copper core is pressed into the bore hole 11 of the cathode steel bar by a hydraulic press, so that the copper core 2 is in close electrical contact with the cathode steel bar 1, and the outer end surface of the copper core 2 is recessed inwards relative to the outer end surface of the cathode steel bar 1 (see the left side of fig. 5 in particular); and welding a semicircular baffle 4 at the outer end face of the copper core 2, wherein the outer side face of the baffle 4 is also inwards concave relative to the outer end face of the cathode steel bar 1, and after welding the baffle 4, the end face of the whole cathode steel bar 1 is flush.
As shown in fig. 6, a small hole 6 is arranged at the lowest end of the drill hole 11 of the cathode steel bar 1, the center of the small hole 6 is 1-3 mm, preferably 2 mm away from the equal diameter end of the drill hole 11, namely, the center of the small hole 6 is 1-3 mm, preferably 2 mm offset to the left side than the equal diameter end of the drill hole 11.
The above detailed description is only for the purpose of describing a possible embodiment of the present invention, but the embodiment is not intended to limit the scope of the present invention, and equivalent embodiments or modifications, such as variations, without departing from the technical spirit of the present invention, are included in the present invention.
Claims (10)
1. A drilling hole (11) is axially formed in the center of a cathode steel bar (1), a copper core (2) with the same diameter is arranged in the drilling hole (11), and the copper core is used for improving the electric conductivity of the cathode steel bar; the copper core (2) is in close electrical contact with the cathode steel bar (1), and is characterized in that:
the length of the copper core (2) is 1/2-4/5 of the length of the cathode steel bar (1), a baffle (4) is arranged at the opening end of the cathode steel bar (1), and the baffle (4) is welded on the cathode steel bar and slightly sunken on the end face of the cathode steel bar (1); the cross section of the cathode steel bar (1) is rectangular with the same area, and the copper core (2) is arranged at the center of the cathode steel bar (1); the outer end face of the copper core (2) is concave to the end face of the cathode steel bar (1); and a small hole (6) is formed at the bottommost end of the drilling hole (11) of the cathode steel bar (1).
2. The copper-cored cathode steel bar according to claim 1, characterized in that: the length of the copper core (2) is 3/4 of the length of the cathode steel bar (1).
3. The copper-cored cathode steel bar according to claim 2, characterized in that: the center of the small hole (6) is deviated 1-3 mm to the left side than the equal-diameter end of the drill hole (11).
4. A copper-cored cathode steel bar according to claim 3, characterized in that: the center of the small hole (6) is deviated 2 mm to the left side than the equal-diameter end of the drill hole (11).
5. The copper-cored cathode steel bar according to claim 4, wherein: the baffle (4) is semicircular and is welded on the cathode steel bar (1).
6. A method of manufacturing a copper-cored cathode steel bar according to any one of claims 1 to 5 effective to suppress horizontal currents, characterized in that:
firstly, a drill hole (11) is processed in the center of a cathode steel bar (1), and the depth of the drill hole (11) is 1/2-4/5 of the length of the whole cathode steel bar (1);
-machining a small hole (6) transversely at the bottom end of said bore (11);
pressing the processed copper core into a drilling hole (11) of the cathode steel bar by using a hydraulic press to enable the copper core (2) to be in close electrical contact with the cathode steel bar (1), and enabling the outer end face of the copper core (2) to be inwards sunken relative to the outer end face of the cathode steel bar (1);
and a semicircular baffle (4) is welded on the outer end face of the copper core (2), and the outer side face of the baffle is inwards sunken relative to the outer end face of the cathode steel bar.
7. The method of manufacturing a copper-cored cathode steel bar effective to suppress horizontal current according to claim 6, wherein: and a small hole (6) is formed in the bottom end of the drilling hole (11) of the cathode steel bar (1), and the center of the small hole (6) deviates 1-3 mm to the left side from the equal-diameter end of the drilling hole (11).
8. The method of manufacturing a copper-cored cathode steel bar effective to suppress horizontal current according to claim 7, wherein: the center of the small hole (6) is deviated to the left side by 2 mm compared with the equal-diameter end of the drill hole (11).
9. The method of manufacturing a copper-cored cathode steel bar effective to suppress horizontal current according to claim 8, wherein: the cross section of the cathode steel bar (1) is rectangular with the same area, and the copper core (2) is arranged in the center of the cathode steel bar (1).
10. The method of manufacturing a copper-cored cathode steel bar effective to suppress horizontal current according to claim 9, wherein: the depth of the drilled hole is 3/4 of the length of the whole cathode steel bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810402908.3A CN108360019B (en) | 2018-04-28 | 2018-04-28 | Cathode steel bar capable of effectively inhibiting horizontal current and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810402908.3A CN108360019B (en) | 2018-04-28 | 2018-04-28 | Cathode steel bar capable of effectively inhibiting horizontal current and manufacturing method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108360019A CN108360019A (en) | 2018-08-03 |
| CN108360019B true CN108360019B (en) | 2020-03-27 |
Family
ID=63009721
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810402908.3A Active CN108360019B (en) | 2018-04-28 | 2018-04-28 | Cathode steel bar capable of effectively inhibiting horizontal current and manufacturing method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108360019B (en) |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2116012U (en) * | 1992-04-14 | 1992-09-16 | 北京有色金属研究总院 | Combined electrode made of stainless steel clad copper |
| CN201713580U (en) * | 2010-04-30 | 2011-01-19 | 任海波 | Environmental-protecting and energy-saving cathode used for electrolytic manganese |
| CN202246908U (en) * | 2011-09-23 | 2012-05-30 | 高伟 | Copper bearing steel composite construction cathode steel bar |
| CN104313638A (en) * | 2014-10-24 | 2015-01-28 | 昆明舒扬科技有限公司 | Preparation method of novel stainless steel cathode plate conductive beam |
| CN104562088A (en) * | 2015-01-20 | 2015-04-29 | 郑州经纬科技实业有限公司 | Electrolytic aluminum cathode conductive rod and preparation method thereof |
| CN205241802U (en) * | 2015-11-23 | 2016-05-18 | 中国铝业股份有限公司 | Negative pole rod iron for aluminium electroloysis |
| CN207109103U (en) * | 2017-08-01 | 2018-03-16 | 三门三友科技股份有限公司 | The contact rod of ladle steel structure |
-
2018
- 2018-04-28 CN CN201810402908.3A patent/CN108360019B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN108360019A (en) | 2018-08-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102766887B (en) | Method for manufacturing stainless steel negative plate | |
| AU2015348020A1 (en) | Cathode current collector for a hall-heroult cell | |
| AU2008318268B2 (en) | Composite collector bar | |
| CN108360019B (en) | Cathode steel bar capable of effectively inhibiting horizontal current and manufacturing method thereof | |
| CN103726068A (en) | Novel cathode conductive cross beam | |
| CN116117296A (en) | Water circulation electrode | |
| CN103726077B (en) | A kind of novel anode conducting crossbeam | |
| CN109913906B (en) | Hollow aluminum-injection steel claw made of aluminum electrolysis anode composite material | |
| CN209010620U (en) | Cupric electrolysis cathode collector bar | |
| CN211829227U (en) | Carbon crystal composite grounding module | |
| CN203715748U (en) | Novel anodic conductive beam | |
| CN203333778U (en) | Cathode structure capable of saving energy and homogenizing horizontal current in molten aluminium | |
| CN217973441U (en) | Integral stainless steel negative plate | |
| CN203462147U (en) | Negative plate for copper and nickel hydrometallurgy | |
| CN219315112U (en) | Titanium-based composite lead dioxide reticular electrode plate | |
| CN220253424U (en) | Output electrode and battery pack | |
| CN201512591U (en) | Embedded type electrolytic bus-bar | |
| CN210289652U (en) | Connector and sucker rod | |
| CN214937862U (en) | Aluminum electrolysis anode conducting device and steel-aluminum connector | |
| CN115747887A (en) | Anode steel claw assembly for electrolytic aluminum, anode device and electrolytic aluminum equipment | |
| CN212293773U (en) | Cathode structure for reducing horizontal current in aluminum electrolytic cell | |
| CN109402671B (en) | Aluminum electrolysis cathode tank with contact surface connection type homogeneous phase conductive medium | |
| CN215404576U (en) | Electrolysis trough conductive cross beam and anode plate assembly for electrolysis | |
| CN218372605U (en) | Three-cylinder type roller center conductive device | |
| CA1339686C (en) | Current conductor and a method for the production thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20200226 Address after: 451252 Guanzhuang Village, Zhitian Town, Gongyi City, Zhengzhou City, Henan Province Applicant after: Zhengzhou Jiuda Technology Co.,Ltd. Address before: 100034 5-G, Xizhimen North Street, Haidian District, Beijing, 1 Applicant before: Beijing Bo Sheng Da Trade Co., Ltd. |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant |