CN103014765B - Cathode structure for reducing horizontal current in aluminum liquid - Google Patents
Cathode structure for reducing horizontal current in aluminum liquid Download PDFInfo
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- CN103014765B CN103014765B CN201110286115.8A CN201110286115A CN103014765B CN 103014765 B CN103014765 B CN 103014765B CN 201110286115 A CN201110286115 A CN 201110286115A CN 103014765 B CN103014765 B CN 103014765B
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- cathode
- steel bar
- aluminum liquid
- partitioning slot
- horizontal current
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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
- 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
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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
- 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
- C25C3/16—Electric current supply devices, e.g. bus bars
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- 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
The invention relates to a cathode structure for reducing horizontal current in aluminum liquid. The cathode structure for reducing the horizontal current in the aluminum liquid comprises a cathode carbon block, and a cathode steel bar is arranged below the cathode carbon block and is characterized in that a separation seam is arranged along the length direction of the cathode steel bar, a separation seam insulating material is arranged in the separation seam, an insulator is arranged in a region between the bottom of the cathode steel bar and the bottom of the separation seam and right below the end part of the cathode carbon block, and the upper part of the cathode steel bar is connected with the cathode carbon block through a conductor. The invention has the advantages and effects that: the invention has strong practicability, reduces the horizontal current in the aluminum liquid under the condition of not changing the cathode discharging mode, namely side discharging, has more uniform cathode current distribution, improves the stability of the electrolytic cell, prolongs the service life of the cell, can efficiently and stably run the electrolytic cell under the condition of low polar distance, effectively reduces the energy consumption per ton of aluminum, and has obvious energy-saving effect.
Description
Technical field
The present invention relates to a kind of cathode construction, particularly relate in the field of Hall-Ai Lu electrolysis production primary aluminum and can reduce the cathode construction of horizontal current in aluminum liquid.
Background technology
Metallic aluminium industrially adopts fused salt electrolysis process to produce, i.e. electrodissolution aluminium oxide in the electrolyte that melted cryolite is main component, and the method currently mainly adopted is Hall-Ai Lu (Hall-Heroult) electrolysis.
The direct equipment producing electrolytic aluminium is electrolysis bath, and electrolysis bath is mainly made up of two large divisions, and a part is anode, is generally made up of carbon materials, and another part is negative electrode, carbon block and inner lining material build by laying bricks or stones and form.
Aluminium cell is connected in whole electrolytic series, and electric current enters electrolysis bath from anode, by melted electrolyte, through liquid aluminium liquid, entering cathode carbon pieces, electric current is collected by the cathode steel bar being assemblied in cathode carbon pieces, imports next electrolysis bath by negative busbar.
Existing cathode structure of aluminium cell is, in the bottom of cathode carbon pieces equipped with cathode steel bar, the mode that ferrophosphorus was stuck with paste or watered to bundle is all adopted to be connected between cathode steel bar with carbon block, each cathode carbon pieces is equipped with one or two cathode steel bars, cathode steel bar and cathode carbon pieces horizontal positioned in the same direction, one end of cathode steel bar is stretched out the sidewall of electrolysis bath and is connected with negative busbar.The electrolysis bath of this structure, there is a significant drawback in cathode conductive structure: due to cathode steel bar and cathode carbon pieces horizontal positioned in the same direction, cause aluminum liquid produces very big horizontal current, this horizontal current produces electromagnetic force with vertical magnetic field combined effect in aluminum liquid, this electromagnetic force drives liquid aluminium liquid flow in a cell and fluctuate, if the horizontal current in electrolysis bath is excessive and skewness, aluminum liquid will be caused excessive with electrolyte interface fluctuation, make electrolysis bath produce serious unstability aborning, reduce current efficiency.It addition, horizontal current is distributed the length direction skewness along cathode carbon pieces in aluminum liquid so that the end highest current density of cathode carbon pieces, thus dramatically speeding up the corrosion of cathode carbon pieces herein, reduce the life-span of electrolysis bath.
In order to improve the stability of electrolysis bath, it is common practice to the strict perpendicular field profile controlled in aluminum liquid in the design of electrolysis bath, reduce electromagnetic force, improve the stability of electrolysis bath.Additionally also have other several method, as arranged a number of barrier structure in electrolysis bath aluminum liquid, such as choker bar, cathode bulging etc., reduce the flow velocity of aluminum liquid, slow down interface fluctuation, improve the stability of electrolysis bath；CURRENT DISTRIBUTION in homogenizing electrolysis bath aluminum liquid, reduces horizontal current, improves the stability of electrolysis bath.
Summary of the invention
The present invention is to solve above-mentioned technical problem, improve the stability of electrolysis bath, propose a kind of to reduce the cathode construction of horizontal current in aluminum liquid, its objective is to reduce the horizontal current in aluminum liquid, make cathode-current density more uniform, thus improving the stability that aluminium cell produces, enabling electrolysis bath efficiently and smoothly operated under relatively low pole span, significantly reduce a ton aluminum energy consumption, cathode-current density is uniform simultaneously, reduce the speed of cathode abrasion, extend cathode life.
To achieve these goals, the present invention is achieved in that and reduces the cathode construction of horizontal current in aluminum liquid, including cathode carbon pieces, it is connected with cathode steel bar at cathode carbon pieces, it is characterized in that described cathode steel bar is provided with partitioning slot along its length, being provided with partitioning slot insulant in partitioning slot, between bottom and the bottom of partitioning slot of cathode steel bar is insulator to region immediately below cathode carbon pieces end, and the top of cathode steel bar is connected with cathode carbon pieces by electric conductor.
Described electric conductor is carbon paste or ferrophosphorus.
Described cathode steel bar part is pricked solid or casts in cathode carbon pieces, and described cathode steel bar entirety passes from the sidepiece of electrolysis bath.
The cross sectional shape of described cathode steel bar is square, circular, semicircle, trapezoidal or triangle.
1-50 root cathode steel bar is installed in described often group cathode carbon pieces bottom.
Described partitioning slot is arranged on the top of cathode steel bar.
Described partitioning slot is vertical or tilts partitioning slot.
Described partitioning slot quantity is 1 ~ 50.
Described when partitioning slot quantity 2-50, the length of partitioning slot is sequentially reduced from the back side laterally.
Advantages of the present invention effect: the present invention has very strong practicality, do not change negative electrode go out electricity mode and side go out electricity when, reduce the horizontal current in aluminum liquid, cathode current distribution is more uniform, improve the stability of electrolysis bath, extend groove life, electrolysis bath can be efficiently and smoothly operated when low pole span, effectively reduce a ton aluminum energy consumption, there is significant energy-saving effect.
Accompanying drawing explanation
Fig. 1 is first embodiment of the present invention cathode construction schematic diagram.
Fig. 2 is first embodiment of the present invention cathode carbon pieces and cathode steel bar combinative structure schematic diagram.
Fig. 3 is second embodiment of the present invention cathode carbon pieces and cathode steel bar combinative structure schematic diagram.
Fig. 4 is the schematic diagram opening partition seam on cathode steel bar.
In figure, 1, cathode carbon pieces；2, cathode steel bar；3, partitioning slot；4, partitioning slot insulant；5, insulator；6, electric conductor.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is described in detail, but protection scope of the present invention is not limit by embodiment.
Embodiment 1
The present invention reduces the cathode construction of horizontal current in aluminum liquid as shown in Figure 1, 2, including cathode carbon pieces 1, it is connected with cathode steel bar 2 at cathode carbon pieces 1, one end of cathode steel bar 2 is connected with negative busbar, cathode steel bar 2 is pricked solid or casts in cathode carbon pieces 1 bottom, cathode steel bar 2 is provided with partitioning slot 3 along its length, the present embodiment is provided with 2 different partitioning slot of length 3 on a cathode steel bar 2, the partitioning slot 3 of length length is located at the side near carbon block center, so in the electric current conductive process of cathode construction, electric current is derived by three part shuntings.
Partitioning slot insulant 4 it is provided with in partitioning slot 3, so that mutually insulated between the different piece split by partitioning slot 3 of cathode steel bar 2.Between bottom and the bottom of partitioning slot 3 of cathode steel bar 2 is insulator 5 to region immediately below cathode carbon pieces 1 end, the top of cathode steel bar 2 is connected with cathode carbon pieces 1 by electric conductor 6, electric conductor 6 is carbon paste or ferrophosphorus, cathode steel bar 2 entirety passes from the sidepiece of electrolysis bath, the cross sectional shape of cathode steel bar 2 is square, circular, semicircle, trapezoidal or triangle, often 1-50 root cathode steel bar 2 is installed in group cathode carbon pieces 1 bottom, partitioning slot 3 is arranged on the top of cathode steel bar 2, partitioning slot 3 is vertical partitioning slot, arranging partitioning slot 3 quantity on every cathode steel bar 2 is 1 ~ 50.
Embodiment 2
Partitioning slot 3 in embodiment 1 is illustrated in figure 4 inclination partition seam, as shown in Figure 3 the lower surface of some prominent cathode carbon pieces 1 of cathode steel bar 2 bottom.
Certainly, partitioning slot is 1 or a plurality of, can realize being that current distributing is derived, the difference is that the effect of shunting is different, the percentage contribution reducing horizontal current is different, but can be transferred through the method and reach to reduce the purpose of horizontal current.When partitioning slot quantity 2-50, the length of partitioning slot is sequentially reduced from the back side laterally.
The present invention do not change negative electrode go out electricity mode when, by changing the structure of cathode steel bar, the connected mode etc. of cathode steel bar and cathode carbon pieces, regulate the combined resistance of cathode carbon pieces and cathode steel bar, resistance value between second equipotential plane of the cathode steel bar end that the first equipotential plane that namely adjustment aluminum liquid and cathode carbon pieces contact is connected with same negative busbar, significantly reduce the horizontal current in aluminum liquid, make cathode current distribution more uniform, improve the stability of electrolysis bath, electrolysis bath efficient stable when low pole span is enable to produce, effectively reduce a ton aluminum energy consumption, energy-saving effect is obvious.Reduce the purpose of horizontal current in aluminum liquid.
Also just for accompanying drawing in the specific embodiment of the present invention, practice weekly notes of the present invention is exemplarily described, but scope is limited by claims below, and do not limit by embodiment in the present invention.
Claims (6)
1. reduce the cathode construction of horizontal current in aluminum liquid, including cathode carbon pieces (1), it is connected with cathode steel bar (2) at cathode carbon pieces (1), it is characterized in that described cathode steel bar (2) is provided with partitioning slot (3) along its length, partitioning slot insulant (4) it is provided with in partitioning slot (3), between bottom and the bottom of partitioning slot (3) of cathode steel bar (2) is insulator to region immediately below cathode carbon pieces (1) end, and the top of cathode steel bar (2) is connected with cathode carbon pieces (1) by electric conductor (6)；Described partitioning slot is vertical or tilts partitioning slot, and during partitioning slot quantity 2-50, the length of partitioning slot is sequentially reduced from the back side laterally.
2. the cathode construction of horizontal current in reduction aluminum liquid according to claim 1, it is characterised in that described electric conductor (6) is carbon paste or ferrophosphorus.
3. the cathode construction of horizontal current in reduction aluminum liquid according to claim 1, it is characterised in that described cathode steel bar (2) part is pricked solid or casts in cathode carbon pieces (1), and described cathode steel bar (2) entirety passes from the sidepiece of electrolysis bath.
4. the cathode construction of horizontal current in reduction aluminum liquid according to claim 1, it is characterised in that the cross sectional shape of described cathode steel bar (2) is square, circular, semicircle, trapezoidal or triangle.
5. the cathode construction of horizontal current in reduction aluminum liquid according to claim 1, it is characterised in that often organize cathode carbon pieces (1) bottom and install 1-50 root cathode steel bar (2).
6. the cathode construction of horizontal current in reduction aluminum liquid according to claim 1, it is characterised in that described partitioning slot (3) is arranged on the top of cathode steel bar (2).
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110286115.8A CN103014765B (en) | 2011-09-24 | 2011-09-24 | Cathode structure for reducing horizontal current in aluminum liquid |
| IN2835CHN2014 IN2014CN02835A (en) | 2011-09-24 | 2012-08-27 | |
| PCT/CN2012/001151 WO2013040856A1 (en) | 2011-09-24 | 2012-08-27 | Cathode structure for reducing horizontal current in molten aluminum |
| MYPI2014000862A MY172135A (en) | 2011-09-24 | 2012-08-27 | Cathode structure for horizontal current in aluminum liquid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110286115.8A CN103014765B (en) | 2011-09-24 | 2011-09-24 | Cathode structure for reducing horizontal current in aluminum liquid |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103014765A CN103014765A (en) | 2013-04-03 |
| CN103014765B true CN103014765B (en) | 2016-07-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110286115.8A Active CN103014765B (en) | 2011-09-24 | 2011-09-24 | Cathode structure for reducing horizontal current in aluminum liquid |
Country Status (4)
| Country | Link |
|---|---|
| CN (1) | CN103014765B (en) |
| IN (1) | IN2014CN02835A (en) |
| MY (1) | MY172135A (en) |
| WO (1) | WO2013040856A1 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103820814A (en) * | 2014-03-07 | 2014-05-28 | 新疆生产建设兵团农八师天山铝业有限公司 | Cathode structure composed of carbon block and steel bar |
| CN107435157A (en) * | 2017-10-10 | 2017-12-05 | 高西胜 | It is a kind of not need the filling of carbon block middle part to prick solid cathode assembling method |
| CN109763145A (en) * | 2019-03-07 | 2019-05-17 | 合肥工业大学 | The cathode construction of horizontal current in a kind of reduction aluminium cell |
| CN111809202B (en) * | 2020-07-22 | 2021-11-23 | 合肥工业大学 | Cathode steel bar structure for reducing horizontal current of aluminum liquid in aluminum electrolytic cell |
| CN113445079B (en) * | 2021-06-17 | 2023-09-22 | 合肥工业大学 | Cathode steel bar structure capable of reducing horizontal current of aluminum liquid for aluminum electrolysis cell |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201864785U (en) * | 2010-10-19 | 2011-06-15 | 沈阳铝镁设计研究院有限公司 | Structure capable of greatly reducing horizontal current in aluminum liquid in aluminum electrolysis cell |
| CN102453927A (en) * | 2010-10-19 | 2012-05-16 | 沈阳铝镁设计研究院有限公司 | Method for greatly reducing horizontal current in aluminum liquid of aluminum electrolytic cell |
| CN102758216A (en) * | 2011-04-29 | 2012-10-31 | 沈阳铝镁设计研究院有限公司 | Method for homogenizing current distribution in aluminum liquid in aluminum electrolytic cell |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0197003A1 (en) * | 1985-03-22 | 1986-10-08 | Schweizerische Aluminium Ag | Electrolysis vat for the production of aluminium |
| FR2868435B1 (en) * | 2004-04-02 | 2006-05-26 | Aluminium Pechiney Soc Par Act | CATHODIC ELEMENT FOR THE EQUIPMENT OF AN ELECTROLYSIS CELL INTENDED FOR THE PRODUCTION OF ALUMINUM |
| CN201031257Y (en) * | 2007-04-20 | 2008-03-05 | 东北大学设计研究院（有限公司） | Novel structure cathode of aluminum cell |
| CN101440505B (en) * | 2008-12-11 | 2010-11-24 | 中国铝业股份有限公司 | Cathode carbon block and cathode structure of impervious barrier conductive steel rod |
-
2011
- 2011-09-24 CN CN201110286115.8A patent/CN103014765B/en active Active
-
2012
- 2012-08-27 WO PCT/CN2012/001151 patent/WO2013040856A1/en active Application Filing
- 2012-08-27 IN IN2835CHN2014 patent/IN2014CN02835A/en unknown
- 2012-08-27 MY MYPI2014000862A patent/MY172135A/en unknown
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201864785U (en) * | 2010-10-19 | 2011-06-15 | 沈阳铝镁设计研究院有限公司 | Structure capable of greatly reducing horizontal current in aluminum liquid in aluminum electrolysis cell |
| CN102453927A (en) * | 2010-10-19 | 2012-05-16 | 沈阳铝镁设计研究院有限公司 | Method for greatly reducing horizontal current in aluminum liquid of aluminum electrolytic cell |
| CN102758216A (en) * | 2011-04-29 | 2012-10-31 | 沈阳铝镁设计研究院有限公司 | Method for homogenizing current distribution in aluminum liquid in aluminum electrolytic cell |
Also Published As
| Publication number | Publication date |
|---|---|
| IN2014CN02835A (en) | 2015-07-03 |
| MY172135A (en) | 2019-11-14 |
| WO2013040856A1 (en) | 2013-03-28 |
| CN103014765A (en) | 2013-04-03 |
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Inventor after: Zhou Dongfang Inventor after: Yang Xiaodong Inventor after: Liu Yafeng Inventor after: Liu Wei Inventor after: Zou Zhiyong Inventor after: Liu Ming Inventor after: Hu Hongwu Inventor after: Zhang Qinsong Inventor after: Bai Bin Inventor before: Zhou Dongfang Inventor before: Yang Xiaodong Inventor before: Liu Yafeng Inventor before: Liu Wei Inventor before: Zou Zhiyong Inventor before: Liu Ming Inventor before: Hu Hongwu Inventor before: Zhang Qinsong Inventor before: Bai Bin |
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Effective date of registration: 20220516 Address after: 110001 Heping North Street 184, Heping District, Liaoning, Shenyang Patentee after: SHENYANG ALUMINIUM AND MAGNESIUM ENGINEERING AND RESEARCH INSTITUTE COMPANY LIMITED Patentee after: Shenyang Boyu Technology Co., Ltd Address before: 110001 Heping North Street 184, Heping District, Liaoning, Shenyang Patentee before: SHENYANG ALUMINIUM AND MAGNESIUM ENGINEERING AND RESEARCH INSTITUTE COMPANY LIMITED |