CN102453927B - Method for greatly reducing horizontal current in aluminum liquid of aluminum electrolytic cell - Google Patents
Method for greatly reducing horizontal current in aluminum liquid of aluminum electrolytic cell Download PDFInfo
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- CN102453927B CN102453927B CN201010511052.7A CN201010511052A CN102453927B CN 102453927 B CN102453927 B CN 102453927B CN 201010511052 A CN201010511052 A CN 201010511052A CN 102453927 B CN102453927 B CN 102453927B
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- cathode
- steel bar
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- cathode carbon
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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
-
- 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 discloses an aluminum cell, and particularly relates to a method for greatly reducing a horizontal current in aluminum liquid of the aluminum electrolytic cell. The method comprises the following steps of: fixedly binding or casting at least one cathode steel bar at the lower part of a cathode carbon block; dividing one section of the cathode steel bar, which is close to the end part of the cathode carbon block along the length direction, into an upper part and a lower part by a separation seam; connecting the section of the cathode steel bar, which is not divided at the middle part of the cathode carbon block, by adopting a conductor and the cathode carbon block; connecting the upper part of the cathode steel bar, which is close to the end part of the cathode carbon block, by the conductor and the cathode carbon block, and isolating the lower part of the cathode steel bar from the cathode carbon block through an insulator; filling a separation seam insulating material in the separation seam so that the upper part and the lower part of the cathode steel bar are insulated; and leading the entire body of the cathode steel bar to pass through the side part of the electrolytic cell. With the method provided by the invention, the horizontal current in the aluminum liquid is greatly reduced, the distribution of a cathode current is more uniform, the stability of the electrolytic cell is improved, the service life of the cell is prolonged, and the aluminum energy consumption per ton is effectively reduced, so that the method has obvious energy-saving effects.
Description
Technical field
The present invention relates to Hall-Ai Lu electrolytic process and produce the cathode construction of the aluminium cell, particularly aluminium cell of primary aluminum, specifically, the present invention relates to a kind of method that reduces horizontal current in the aluminum cell aluminum liquor significantly.
Background technology
Metallic aluminium is produced in industrial employing fused salt electrolysis process, i.e. electrolytic dissolution is aluminum oxide in the ionogen of main component at the sodium aluminum fluoride of fusion, and the main method that adopts is Hall-Ai Lu (Hall-Heroult) electrolytic process at present.
The direct equipment of producing electrolytic aluminum is electrolyzer, and electrolyzer mainly contains the two parts to be formed, and a part is anode, is made by carbon materials usually, and another part is negative electrode, is built by laying bricks or stones by charcoal piece and inner lining material to form.
Aluminium cell is connected in the whole electrolytic series, and electric current enters electrolyzer from anode, by the ionogen of fusion, pass liquid aluminium liquid, enter cathode carbon pieces, electric current is collected by the cathode steel bar that is assemblied in the cathode carbon pieces, imports next electrolyzer by negative busbar.
Existing cathode structure of aluminium cell is, cathode steel bar is equipped with in bottom at cathode carbon pieces, all adopt between cathode steel bar and the charcoal piece and prick the modes of sticking with paste or watering ferrophosphorus and be connected, each cathode carbon pieces is equipped with one or two cathode steel bars, cathode steel bar and cathode carbon pieces be horizontal positioned in the same way, and the sidewall that an end of cathode steel bar stretches out electrolyzer is connected with negative busbar.The electrolyzer of this structure, there is a very large shortcoming in cathode conductive structure: because cathode steel bar and cathode carbon pieces horizontal positioned in the same way, cause producing in the aluminium liquid very large horizontal current, the vertical magnetic field acting in conjunction produces electromagnetic force in this horizontal current and the aluminium liquid, this electromagnetic force drives liquid aluminium liquid and flows in electrolyzer and fluctuation, if the horizontal current in the electrolyzer is excessive and skewness, will cause the fluctuation of aluminium liquid and electrolyte interface excessive, make electrolyzer produce serious unstable aborning, reduce current efficiency.In addition, horizontal current distributes along the length direction skewness of cathode carbon pieces in the aluminium liquid, makes the end of cathode carbon pieces locate the current density maximum, thereby significantly accelerates the corrosion of cathode carbon pieces herein, reduces the life-span of electrolyzer.
In order to improve the stability of electrolyzer, common way is the perpendicular field profile in the strict control aluminium liquid in the design of electrolyzer, and this has not only increased the difficulty of negative busbar design, and causes the cathode arrangement complexity, and the bus consumption is big, and investment increases.
Summary of the invention
The present invention is in order to solve the problems of the technologies described above, improve the stability of electrolyzer, propose a kind of method that reduces horizontal current in the aluminum cell aluminum liquor significantly, its objective is the horizontal current that reduces in the aluminium liquid, make cathode current density more even, thereby improve the stability that aluminium cell is produced, make electrolyzer significantly reduce a ton aluminium energy consumption efficiently and smoothly operated than hanging down under the pole span, the while cathode current density is even, reduce the speed of cathode abrasion, prolong cathode life.
To achieve these goals, the present invention is achieved in that
A kind of method that significantly reduces horizontal current in the aluminum cell aluminum liquor, prick solid or at least one cathode steel bar of casting in the cathode carbon pieces bottom, cathode steel bar is divided into two portions up and down being separated seam near a section of cathode carbon pieces end along its length, cathode steel bar does not have divided one section all to adopt electrical conductor to be connected with cathode carbon pieces at the cathode carbon pieces middle portion, cathode steel bar upper part near the cathode carbon pieces end adopts electrical conductor to be connected with cathode carbon pieces, lower part adopts isolator and cathode carbon pieces insulation, adopt the partitioning slot filling insulating material in the partitioning slot, make two portions cathode steel bar insulation up and down, cathode steel bar integral body passes from the sidepiece of electrolyzer.
Described electrical conductor is carbon paste or ferrophosphorus.
The all or part of bundle of described cathode steel bar is consolidated or is cast in the cathode carbon pieces.
The cross-sectional shape of described cathode steel bar is square, circular, semicircle, trapezoidal or trilateral.
1-50 root cathode steel bar is installed in described every group of cathode carbon pieces bottom.
Advantage of the present invention and effect are as follows: the present invention has very strong practicality, do not change negative electrode go out electric mode be the side go out the electricity condition under, reduced the horizontal current in the aluminium liquid significantly, cathode current distribution is more even, improved the stability of electrolyzer, prolonged cell life, electrolyzer can be efficiently and smoothly operated under low pole span condition, reduce ton aluminium energy consumption effectively, had obvious energy-saving effect.
Description of drawings
Fig. 1 is embodiment of the invention cathode construction synoptic diagram.
Fig. 2 is embodiment of the invention cathode carbon pieces and cathode steel bar unitized construction synoptic diagram.
Fig. 3 is the vertical view of Fig. 2 cathode carbon pieces and cathode steel bar unitized construction.
Fig. 4 is the A-A sectional view of Fig. 3.
Among the figure, 1, cathode carbon pieces; 2, cathode steel bar; 3, partitioning slot; 4, partitioning slot insulating material; 5, isolator; 6, electrical conductor.
Embodiment
The present invention is described in detail below in conjunction with accompanying drawing, but protection scope of the present invention is not limit by embodiment.
As shown in the figure, a kind of method that significantly reduces horizontal current in the aluminum cell aluminum liquor of the present invention, prick solid or at least one cathode steel bar 2 of casting in cathode carbon pieces 1 bottom, cathode steel bar 2 is divided into two portions up and down being separated seam 3 near a section of cathode carbon pieces 1 end along its length, cathode steel bar 2 does not have divided one section all to adopt electrical conductor 6 to be connected with cathode carbon pieces 1 at cathode carbon pieces 1 middle portion, cathode steel bar 2 upper part near cathode carbon pieces 1 end adopt electrical conductor 6 to be connected with cathode carbon pieces 1, lower part adopts isolator 5 and cathode carbon pieces 1 insulation, adopt partitioning slot insulating material 4 to fill in the partitioning slot 3, make two portions cathode steel bar 2 insulation up and down, cathode steel bar 2 integral body pass from the sidepiece of electrolyzer; Electrical conductor 6 is carbon paste or ferrophosphorus, and cathode steel bar 2 all or part of bundles are consolidated or cast in the cathode carbon pieces 1, and the cross-sectional shape of cathode steel bar 2 is square, circular, semicircle, trapezoidal or trilateral, and 1-50 root cathode steel bar is installed in every group of cathode carbon pieces 1 bottom.
The present invention is not changing under the condition that negative electrode goes out electric mode, the mode of connection of structure, cathode steel bar and cathode carbon pieces by changing cathode steel bar etc., regulate the combined resistance of cathode carbon pieces and cathode steel bar, significantly reduced the horizontal current in the aluminium liquid, cathode current distribution is more even, has improved the stability of electrolyzer, makes the electrolyzer can efficient stable production under low pole span condition, reduced ton aluminium energy consumption effectively, energy-saving effect is obvious.Reach the purpose that reduces horizontal current in the aluminium liquid.
Present embodiment has only been listed a kind of method that realizes significantly reducing horizontal current of aluminum cell, also only at accompanying drawing, the realization measure of present method is described in the embodiment of this patent, and embodiment limits in this patent but this patent protection domain is not subjected to.
Claims (5)
1. method that significantly reduces horizontal current in the aluminum cell aluminum liquor, it is characterized in that pricking admittedly or at least one cathode steel bar (2) of casting in cathode carbon pieces (1) bottom, cathode steel bar (2) along its length be separated near a section of cathode carbon pieces (1) end seam (3) be divided into about two portions, cathode steel bar (2) does not have divided one section all to adopt electrical conductor (6) to be connected with cathode carbon pieces (1) at cathode carbon pieces (1) middle portion, cathode steel bar (2) upper part near cathode carbon pieces (1) end adopts electrical conductor (6) to be connected with cathode carbon pieces (1), lower part adopts isolator (5) and cathode carbon pieces (1) insulation, adopt partitioning slot insulating material (4) to fill in the partitioning slot (3), make two portions cathode steel bar (2) insulation up and down, the whole sidepiece from electrolyzer of cathode steel bar (2) passes.
2. the method that significantly reduces horizontal current in the aluminum cell aluminum liquor according to claim 1 is characterized in that described electrical conductor (6) is carbon paste or ferrophosphorus.
3. the method that significantly reduces horizontal current in the aluminum cell aluminum liquor according to claim 1 is characterized in that all or part of bundle of described cathode steel bar (2) is solid or casts in the cathode carbon pieces (1).
4. the method that significantly reduces horizontal current in the aluminum cell aluminum liquor according to claim 1, the cross-sectional shape that it is characterized in that described cathode steel bar (2) is square, circular, semicircle, trapezoidal or trilateral.
5. the method that significantly reduces horizontal current in the aluminum cell aluminum liquor according to claim 1 is characterized in that described every group of cathode carbon pieces bottom installation 1-50 root cathode steel bar.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010511052.7A CN102453927B (en) | 2010-10-19 | 2010-10-19 | Method for greatly reducing horizontal current in aluminum liquid of aluminum electrolytic cell |
| CA2792415A CA2792415C (en) | 2010-10-19 | 2011-09-16 | Cathode structure, aluminum electrolysis cell, and method for lowering horizontal current in aluminum liquid |
| PCT/CN2011/001572 WO2012051790A1 (en) | 2010-10-19 | 2011-09-16 | Cathode structure, aluminum electrolysis cell, and method for lowering horizontal current in aluminum liquid |
| MYPI2012004600A MY182380A (en) | 2010-10-19 | 2011-09-16 | Cathode structure, aluminum electrolytic cell and process for reducing horizontal electric current in liquid aluminum |
| NO20130672A NO20130672A1 (en) | 2010-10-19 | 2013-05-14 | Cathode structure, aluminum electrolysis cell and method for reducing horizontal electric current in liquid aluminum |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010511052.7A CN102453927B (en) | 2010-10-19 | 2010-10-19 | Method for greatly reducing horizontal current in aluminum liquid of aluminum electrolytic cell |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102453927A CN102453927A (en) | 2012-05-16 |
| CN102453927B true CN102453927B (en) | 2013-08-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010511052.7A Active CN102453927B (en) | 2010-10-19 | 2010-10-19 | Method for greatly reducing horizontal current in aluminum liquid of aluminum electrolytic cell |
Country Status (5)
| Country | Link |
|---|---|
| CN (1) | CN102453927B (en) |
| CA (1) | CA2792415C (en) |
| MY (1) | MY182380A (en) |
| NO (1) | NO20130672A1 (en) |
| WO (1) | WO2012051790A1 (en) |
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|---|---|---|---|---|
| CN102758216B (en) * | 2011-04-29 | 2015-04-15 | 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 |
| CN103014765B (en) * | 2011-09-24 | 2016-07-06 | 沈阳铝镁设计研究院有限公司 | Cathode structure for reducing horizontal current in aluminum liquid |
| EP2909875B1 (en) | 2012-10-16 | 2020-06-17 | Ambri Inc. | Electrochemical energy storage devices and housings |
| US9312522B2 (en) | 2012-10-18 | 2016-04-12 | Ambri Inc. | Electrochemical energy storage devices |
| US11211641B2 (en) | 2012-10-18 | 2021-12-28 | Ambri Inc. | Electrochemical energy storage devices |
| US9735450B2 (en) | 2012-10-18 | 2017-08-15 | Ambri Inc. | Electrochemical energy storage devices |
| WO2015058010A1 (en) | 2013-10-16 | 2015-04-23 | Ambri Inc. | Seals for high temperature reactive material devices |
| US10541451B2 (en) | 2012-10-18 | 2020-01-21 | Ambri Inc. | Electrochemical energy storage devices |
| US11721841B2 (en) | 2012-10-18 | 2023-08-08 | Ambri Inc. | Electrochemical energy storage devices |
| US11387497B2 (en) | 2012-10-18 | 2022-07-12 | Ambri Inc. | Electrochemical energy storage devices |
| US9520618B2 (en) | 2013-02-12 | 2016-12-13 | Ambri Inc. | Electrochemical energy storage devices |
| US10270139B1 (en) | 2013-03-14 | 2019-04-23 | Ambri Inc. | Systems and methods for recycling electrochemical energy storage devices |
| US9502737B2 (en) | 2013-05-23 | 2016-11-22 | Ambri Inc. | Voltage-enhanced energy storage devices |
| CN104250830A (en) * | 2013-06-28 | 2014-12-31 | 沈阳铝镁设计研究院有限公司 | Cathode structure capable of saving energy and homogenizing horizontal current in molten aluminium |
| US9659732B2 (en) | 2014-08-11 | 2017-05-23 | Honeywell International Inc. | Partially insulated cathode |
| US10181800B1 (en) | 2015-03-02 | 2019-01-15 | Ambri Inc. | Power conversion systems for energy storage devices |
| WO2016141354A2 (en) | 2015-03-05 | 2016-09-09 | Ambri Inc. | Ceramic materials and seals for high temperature reactive material devices |
| US9893385B1 (en) | 2015-04-23 | 2018-02-13 | Ambri Inc. | Battery management systems for energy storage devices |
| CN105350018A (en) * | 2015-11-25 | 2016-02-24 | 中国铝业股份有限公司 | Cathode for dovetail groove type aluminum electrolytic cell |
| CN105648474B (en) * | 2016-03-10 | 2017-09-01 | 河南中孚实业股份有限公司 | Large-scale pre-baked cell current stabilization saving construction method |
| US11929466B2 (en) | 2016-09-07 | 2024-03-12 | Ambri Inc. | Electrochemical energy storage devices |
| CN106493341B (en) * | 2016-12-15 | 2019-06-04 | 贵阳铝镁设计研究院有限公司 | Aluminium electrolysis cathode carbon block phosphorus pig iron casting unit and casting method |
| WO2018187777A1 (en) | 2017-04-07 | 2018-10-11 | Ambri Inc. | Molten salt battery with solid metal cathode |
| CN106929880A (en) * | 2017-04-18 | 2017-07-07 | 东北大学 | It is a kind of while reducing the cathode structure of aluminium cell of aluminum liquid horizontal electric current and cathode carbon pieces surface maximum current |
| CN106987865A (en) * | 2017-05-24 | 2017-07-28 | 东北大学 | The cathode construction of horizontal current in a kind of reduction aluminium cell |
| 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 |
| CN109580725B (en) * | 2018-12-10 | 2020-06-26 | 华中科技大学 | Two-dimensional transition metal sulfide gas sensor based on antenna structure and preparation |
| 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 |
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| WO1997048838A1 (en) * | 1996-06-18 | 1997-12-24 | Comalco Aluminium Limited | Cathode construction |
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2010
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-
2011
- 2011-09-16 CA CA2792415A patent/CA2792415C/en active Active
- 2011-09-16 WO PCT/CN2011/001572 patent/WO2012051790A1/en active Application Filing
- 2011-09-16 MY MYPI2012004600A patent/MY182380A/en unknown
-
2013
- 2013-05-14 NO NO20130672A patent/NO20130672A1/en unknown
Patent Citations (6)
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| US3728243A (en) * | 1970-09-01 | 1973-04-17 | Alusuisse | Electrolytic cell for the production of aluminum |
| WO1997048838A1 (en) * | 1996-06-18 | 1997-12-24 | Comalco Aluminium Limited | Cathode construction |
| WO2001063014A1 (en) * | 2000-02-25 | 2001-08-30 | Comalco Aluminium Limited | An electrolytic reduction cell and collector bar |
| WO2004031452A1 (en) * | 2002-10-02 | 2004-04-15 | Alcan International Limited | Collector bar providing discontinuous electrical connection to cathode block |
| CN1844467A (en) * | 2006-03-17 | 2006-10-11 | 贵阳铝镁设计研究院 | Method and structure for improving cathode current density of aluminium-electrolytic cell |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102453927A (en) | 2012-05-16 |
| WO2012051790A1 (en) | 2012-04-26 |
| CA2792415A1 (en) | 2012-04-26 |
| MY182380A (en) | 2021-01-21 |
| CA2792415C (en) | 2013-11-26 |
| NO20130672A1 (en) | 2013-05-14 |
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Inventor after: Yang Xiaodong Inventor after: Zhou Dongfang 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: Yang Xiaodong Inventor before: Zhou Dongfang 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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