CN203333778U - Cathode structure capable of saving energy and homogenizing horizontal current in molten aluminium - Google Patents
Cathode structure capable of saving energy and homogenizing horizontal current in molten aluminium Download PDFInfo
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- CN203333778U CN203333778U CN201320379053XU CN201320379053U CN203333778U CN 203333778 U CN203333778 U CN 203333778U CN 201320379053X U CN201320379053X U CN 201320379053XU CN 201320379053 U CN201320379053 U CN 201320379053U CN 203333778 U CN203333778 U CN 203333778U
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Abstract
The utility model relates to a cathode structure of an aluminium electrolysis cell and in particular relates to a cathode structure capable of saving energy and homogenizing horizontal current in molten aluminium. The cathode structure comprises a cathode carbon block and a current conducting rod, wherein the current conducting rod protrudes out of the bottom surface of the cathode carbon block and is surrounded by clad materials; an insulator is filled between the end of the cathode carbon block and the current conducting rod; other parts of the cathode carbon block are connected with a contact part of the current conducting rod by an electric connector. The cathode structure has the advantages and effects that the cathode structure has strong practicability, and not only substantially reduces the cathode drop but also substantially reduces the horizontal current in molten aluminium and improves the stability of an electrolysis cell under the condition of not changing the electricity output mode of the cathode, namely side electricity output, so that the electrolysis cell can operate efficiently and stably under the condition of short electrode distance; the cathode structure effectively reduces the energy consumption of tonnage aluminium and has an obvious energy saving effect; meanwhile, the cathode current is distributed more uniformly, thus the service life of the cell is prolonged.
Description
Technical field
The utility model relates to a kind of cathode structure of aluminium cell, relates in particular to a kind of cathode construction of energy-conservation, homogenizing aluminum liquid horizontal electric current.
Background technology
Metallic aluminium is produced in industrial employing fused salt electrolysis process, i.e. aluminum oxide in the ionogen that electrolytic dissolution is main component at molten cryolitic, and the main method adopted 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 and forms, and a part is anode, usually by carbon materials, is made; Another part is negative electrode, by cathode carbon pieces group and inner lining material, is built by laying bricks or stones and is formed.
Aluminium cell is connected in whole electrolytic series, and electric current enters electrolyzer from anode, by the ionogen of melting, through aluminium liquid, enter cathode carbon pieces, electric current is collected by the cathode steel bar be assemblied in cathode carbon pieces, by negative busbar, imports next electrolyzer.
Existing cathode structure of aluminium cell is: cathode steel bar is equipped with in the bottom at cathode carbon pieces, cathode steel bar does not protrude the cathode carbon pieces bottom, all adopt between cathode steel bar and charcoal piece and prick the modes of sticking with paste or watering ferrophosphorus and be connected, each cathode carbon pieces is equipped with 1 ~ 4 cathode steel bar, 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: due to cathode steel bar and cathode carbon pieces horizontal positioned in the same way, cause in aluminium liquid producing very large horizontal current, in this horizontal current and aluminium liquid, the vertical magnetic field acting in conjunction produces electromagnetic force, this electromagnetic force drives aluminium liquid to flow in electrolyzer and fluctuation, if the horizontal current in electrolyzer is excessive and skewness, will cause aluminium liquid and electrolyte interface fluctuation excessive, make electrolyzer produce aborning serious unstable, reduce current efficiency.In addition, in aluminium liquid, horizontal current distributes along the length direction skewness of cathode carbon pieces, makes the end current density maximum of cathode carbon pieces, 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 strict perpendicular field profile of controlling in 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 large, increase of investment.
In addition, can suppress the generation of part horizontal current by improving cathode construction, but can increase the pressure drop of cathode carbon pieces group, cause ton increase of aluminium energy consumption.
Summary of the invention
A kind of cathode construction of energy-conservation, homogenizing aluminum liquid horizontal electric current is provided in order to solve the problems of the technologies described above the utility model, purpose is the horizontal current in decrease aluminium liquid, make cathode current density more even, thereby improve the stability that aluminium cell is produced, make the electrolyzer can be efficiently and smoothly operated under low pole span, cathode current density is even simultaneously, reduces the speed of cathode abrasion, extends cathode life.The decrease cathode drop, significantly reduce ton aluminium energy consumption.
To achieve these goals, that the utility model is achieved in that is energy-conservation, the cathode construction of homogenizing aluminum liquid horizontal electric current, it is characterized in that comprising cathode carbon pieces and current conducting rod, it is characterized in that current conducting rod protrudes the cathode carbon pieces bottom surface, the current conducting rod encapsulated material that protrudes the cathode carbon pieces bottom surface surrounds, fill isolator between cathode carbon pieces end and current conducting rod, the cathode carbon pieces other parts are connected by electric connector with the current conducting rod contact site.
Current conducting rod consists of homogeneous material or multilayer materials.
The current conducting rod cross section can be rectangle, circle, semicircle, trapezoidal, T-shaped or L-type.
Current conducting rod quantity is 1 ~ 40.
Coating material partly or entirely surrounds the current conducting rod that protrudes the cathode carbon pieces bottom.
Electric connector can be carbon paste, cast iron, carbon paste or binding agent.
The width of isolator is 10 ~ 200mm.
Described homogeneous material is steel, copper, aluminium, silver.
Described multilayer materials is that copper-steel is compound, aluminium-steel is compound, silver-steel is compound or copper-aluminium is compound.
Advantage and the effect of the utility model patent are as follows: the utlity model has very strong practicality, not changing negative electrode, to go out electric mode be that side goes out under electric condition, both decrease cathode drop, again decrease the horizontal current in aluminium liquid, improve the stability of electrolyzer, make the electrolyzer can be efficiently and smoothly operated under low pole span condition, effectively reduce ton aluminium energy consumption, there is significant energy-saving effect, simultaneously, cathode current distribution is more even, has extended cell life.
The accompanying drawing explanation
The front view that Fig. 1 is the utility model embodiment 1.
The A-A sectional view that Fig. 2 is Fig. 1.
The front view that Fig. 3 is the utility model embodiment 2.
The A-A sectional view that Fig. 4 is Fig. 3.
In figure: 1, cathode carbon pieces; 2, current conducting rod; 3, electric connector; 4, multilayer materials; 5, isolator; 6, coating material.
Embodiment
Below in conjunction with accompanying drawing, embodiment is elaborated, but protection domain of the present utility model is not limit by embodiment.
Embodiment 1
The utility model is a kind of energy-conservation as illustrated in fig. 1 and 2, the cathode construction of homogenizing aluminum liquid horizontal electric current, current conducting rod 2 protrudes cathode carbon pieces 1 bottom surface, current conducting rod 2 encapsulated materials 6 that protrude cathode carbon pieces 1 bottom surface surround, fill isolator 5 between cathode carbon pieces 1 end and current conducting rod 2, cathode carbon pieces 1 other parts are connected by electric connector 3 with current conducting rod 2 contacts site, current conducting rod 2 consists of homogeneous material, current conducting rod 2 cross sections are rectangle, the quantity of current conducting rod 2 is four, coating material 6 all surrounds the current conducting rod 2 that protrudes cathode carbon pieces 1 bottom, electric connector 3 is cast iron, the material of current conducting rod 2 is steel, the width of isolator is 10 ~ 200mm.
Embodiment 2
The utility model is a kind of energy-conservation as shown in Figures 3 and 4, the cathode construction of homogenizing aluminum liquid horizontal electric current, current conducting rod 2 protrudes cathode carbon pieces 1 bottom surface, current conducting rod 2 encapsulated materials 6 that protrude cathode carbon pieces 1 bottom surface surround, fill isolator 5 between cathode carbon pieces 1 end and current conducting rod 2, cathode carbon pieces 1 other parts are connected by electric connector 3 with current conducting rod 2 contacts site, current conducting rod 2 consists of multilayer materials 4, current conducting rod 2 cross sections are semicircle, the quantity of current conducting rod 2 is two, coating material 6 parts are surrounded the current conducting rod 2 that protrudes cathode carbon pieces 1 bottom, current conducting rod 2 basal surfaces expose coating material 6, electric connector 3 is carbon paste, multilayer materials 4 is copper-steel composite material, the width of isolator is 10 ~ 200mm.
Embodiment 3
Current conducting rod 2 cross sections in embodiment 1 are circular, and the quantity of current conducting rod 2 is 8, and coating material 6 all surrounds the current conducting rod 2 that protrudes cathode carbon pieces 1 bottom, and electric connector 3 is carbon paste, and the material of current conducting rod 2 is copper, and the other the same as in Example 1 is identical.
Embodiment 4
Current conducting rod 2 cross sections in embodiment 1 are trapezoidal, and the quantity of current conducting rod 2 is 8, and coating material 6 all surrounds the current conducting rod 2 that protrudes cathode carbon pieces 1 bottom, and electric connector 3 is carbon paste, and the material of current conducting rod 2 is aluminium, and the other the same as in Example 1 is identical.
Current conducting rod 2 cross sections in embodiment 1 are T, and the quantity of current conducting rod 2 is 8, and coating material 6 all surrounds the current conducting rod 2 that protrudes cathode carbon pieces 1 bottom, and electric connector 3 is carbon paste, and the material of current conducting rod 2 is silver, and the other the same as in Example 1 is identical.
Current conducting rod 2 cross sections in embodiment 2 are L shaped, the quantity of current conducting rod 2 is 40, coating material 6 parts are surrounded the current conducting rod 2 that protrudes cathode carbon pieces 1 bottom, current conducting rod 2 basal surfaces expose coating material 6, electric connector 3 is binding agent, multilayer materials 4 is aluminum-steel composite material, and the other the same as in Example 2 is identical.
Embodiment 7
Current conducting rod 2 cross sections in embodiment 2 are square, the quantity of current conducting rod 2 is 1, coating material 6 parts are surrounded the current conducting rod 2 that protrudes cathode carbon pieces 1 bottom, current conducting rod 2 basal surfaces expose coating material 6, electric connector 3 is binding agent, multilayer materials 4 is silver-steel composite material, and the other the same as in Example 2 is identical.
Embodiment 8
Current conducting rod 2 cross sections in embodiment 2 are square, the quantity of current conducting rod 2 is 1, coating material 6 parts are surrounded the current conducting rod 2 that protrudes cathode carbon pieces 1 bottom, current conducting rod 2 basal surfaces expose coating material 6, electric connector 3 is binding agent, multilayer materials 4 is copper-aluminium composite material, and the other the same as in Example 2 is identical.
Claims (9)
1. the cathode construction of energy-conservation, homogenizing aluminum liquid horizontal electric current, it is characterized in that comprising cathode carbon pieces and current conducting rod, it is characterized in that current conducting rod protrudes the cathode carbon pieces bottom surface, the current conducting rod encapsulated material that protrudes the cathode carbon pieces bottom surface surrounds, fill isolator between cathode carbon pieces end and current conducting rod, the cathode carbon pieces other parts are connected by electric connector with the current conducting rod contact site.
2. the cathode construction of energy-conservation, homogenizing aluminum liquid horizontal electric current according to claim 1, is characterized in that current conducting rod consists of homogeneous material or multilayer materials.
3. the cathode construction of energy-conservation, homogenizing aluminum liquid horizontal electric current according to claim 1, is characterized in that the current conducting rod cross section can be rectangle, circle, semicircle, trapezoidal, T-shaped or L-type.
4. the cathode construction of energy-conservation, homogenizing aluminum liquid horizontal electric current according to claim 1, is characterized in that current conducting rod quantity is 1 ~ 40.
5. the cathode construction of energy-conservation, homogenizing aluminum liquid horizontal electric current according to claim 1, is characterized in that coating material partly or entirely surrounds the current conducting rod that protrudes the cathode carbon pieces bottom.
6. the cathode construction of energy-conservation, homogenizing aluminum liquid horizontal electric current according to claim 1, is characterized in that electric connector can be carbon paste, cast iron, carbon paste or binding agent.
7. the cathode construction of energy-conservation, homogenizing aluminum liquid horizontal electric current according to claim 1, the width that it is characterized in that isolator is 10 ~ 200mm.
8. the cathode construction of energy-conservation, homogenizing aluminum liquid horizontal electric current according to claim 2, is characterized in that described homogeneous material is steel, copper, aluminium, silver.
9. the cathode construction of energy-conservation, homogenizing aluminum liquid horizontal electric current according to claim 2, is characterized in that described multilayer materials is that copper-steel is compound, aluminium-steel is compound, silver-steel is compound or copper-aluminium is compound.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320379053XU CN203333778U (en) | 2013-06-28 | 2013-06-28 | Cathode structure capable of saving energy and homogenizing horizontal current in molten aluminium |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320379053XU CN203333778U (en) | 2013-06-28 | 2013-06-28 | Cathode structure capable of saving energy and homogenizing horizontal current in molten aluminium |
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| CN203333778U true CN203333778U (en) | 2013-12-11 |
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| CN201320379053XU Expired - Lifetime CN203333778U (en) | 2013-06-28 | 2013-06-28 | Cathode structure capable of saving energy and homogenizing horizontal current in molten aluminium |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103981540A (en) * | 2014-05-28 | 2014-08-13 | 中南大学 | Aluminum electrolytic tank composite cathode structure containing a highly conductive skeleton network |
| CN104250831A (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 |
-
2013
- 2013-06-28 CN CN201320379053XU patent/CN203333778U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104250831A (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 |
| CN103981540A (en) * | 2014-05-28 | 2014-08-13 | 中南大学 | Aluminum electrolytic tank composite cathode structure containing a highly conductive skeleton network |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131211 |