CN202643856U - Connecting structure of cathode carbon block and cathode steel bars of aluminum electrolytic cell - Google Patents
Connecting structure of cathode carbon block and cathode steel bars of aluminum electrolytic cell Download PDFInfo
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- CN202643856U CN202643856U CN 201220193358 CN201220193358U CN202643856U CN 202643856 U CN202643856 U CN 202643856U CN 201220193358 CN201220193358 CN 201220193358 CN 201220193358 U CN201220193358 U CN 201220193358U CN 202643856 U CN202643856 U CN 202643856U
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Abstract
The utility model discloses a connecting structure of a cathode carbon block and cathode steel bars of an aluminum electrolytic cell. The connecting structure comprises the cathode carbon block, the cathode steel bars and combined material layers, wherein at least three cathode steel bar slots are arranged at the left end and the right end of the cathode carbon block, one cathode steel bar is arranged in each cathode steel bar slot, and the cathode steel bars and the cathode carbon block are fixedly combined together through the combined material layers. According to the connecting structure, assembling methods of original cathode carbon block groups are not required to be changed in a cathode carbon block group, and only the slotting number of the cathode carbon block and the number of the cathode steel bars are increased so that the iron-carbon pressure drop of existing cathode carbon block groups can be reduced, horizontal current components of the cathode carbon block group are reduced, power consumption is reduced, and service life of the electrolytic cell is greatly prolonged.
Description
Technical field
The utility model technology belongs to the aluminium production technical field.Present technique is to develop a kind of aluminium electrolytic cell cathode charcoal piece and is connected structure with cathode steel bar.Use the utility model technology and can obtain larger economic benefit.
Background technology
1. general introduction
The industrial process of aluminium is fused salt electrolysis process in the world at present, and the key equipment of electrolysis legal system aluminium is aluminium cell, and aluminium cell mainly is comprised of negative electrode and anode two major parts.Aluminium electrolytic cell cathode is combined by dozens of cathode carbon pieces group side by side according to cell current intensity size usually, and for example: the 240kA electrolyzer has about 20 groups of cathode carbon pieces groups, and the 350kA electrolyzer has about 32 groups of cathode carbon pieces groups.
Existing cathode carbon pieces group is comprised of cathode carbon pieces, cathode steel bar, bond material three parts, and the cathode steel bar quantity of cathode carbon pieces one end is two.
Bond material is generally the charcoal element and sticks with paste or the phosphorus pig iron, and bond material plays ligation, by bond material cathode carbon pieces and cathode steel bar is combined into the cathode carbon pieces group.
Take cathode carbon pieces group commonly used at present as example, each combination of materials sees the following form:
At present, though the cathode carbon pieces group of existing larger width is used at aluminium cell, structural shape is still similar with upper table, and namely cathode carbon pieces one end still has two rod irons.
Industrial aluminum electrolysis bath adopts this cathode carbon pieces group to form aluminium electrolytic cell cathode at present.
2. have the problem that the cathode carbon pieces group exists now
It will be argued that this cathode carbon pieces group that aluminum current industry is used always has following problem, for convenience of explanation, be of a size of 515mm * 450mm cathode carbon pieces group take the maximum cross section specification of present consumption and be described as follows as example:
Existing cathode carbon pieces group iron carbon pressure falls larger
Cathode carbon pieces group current path is: the cathode carbon pieces upper surface--cathode carbon pieces and bond material interface--bond material--bond material and cathode steel bar interface--cathode steel bar.Wherein, be commonly referred to the iron carbon pressure from the voltage of cathode carbon pieces and bond material interface--bond material--bond material and cathode steel bar interface and fall,
It is the important component part of electric tank cathode volts lost that the iron carbon pressure falls, and increase iron carbon contact area can effectively reduce the iron carbon pressure and fall.And existing cathode carbon pieces group is because cathode block one end has 2 rod irons, so that iron carbon contact area is less, so the iron carbon pressure falls greatlyr, and the iron carbon pressure falls greatly then can increase the electrolyzer energy consumption.
Cathode carbon pieces group horizontal current component is relatively large
Current path is during existing cathode carbon pieces group work: electric current enters from the cathode carbon pieces upper surface, derives from cathode steel bar, can produce a part of horizontal current component in the downward path of electric current, owing to adopt two cathode steel bars, this horizontal current component is relatively large.The conference of trough inner water ordinary telegram stream causes the interior vertical magnetic field of groove also large, can cause thus the interior metal wave of groove large, affects electrolysis production.
Impact on bath life
The even underload loaded current of electric tank cathode is to keep one of long-life important factor of electrolyzer, and existing cathode carbon pieces group is because the iron carbon contact surface less of cathode carbon pieces and cathode steel bar, cathode steel bar surface current load is relatively large, in the electrolysis production process, because cathode carbon pieces is born electric current and is had up and down fluctuation, in case cathodic current is excessive and skewness in cathode carbon pieces, can cause cathode carbon pieces to produce localized cracks even breakage, then electric tank cathode will have been changed in overhaul, and therefore existing cathode carbon pieces group mode of connection causes the probability of electric tank cathode breakage larger.
Summary of the invention
The purpose of this utility model just is to overcome the syndeton that above-mentioned deficiency provides a kind of aluminium electrolytic cell cathode charcoal piece and cathode steel bar.
The purpose of this utility model can be achieved through the following technical solutions:
The syndeton of a kind of aluminium electrolytic cell cathode charcoal piece and cathode steel bar, comprise cathode carbon pieces, cathode steel bar and bond material layer, left end and right-hand member at cathode carbon pieces are provided with at least three cathode steel bar grooves, a cathode steel bar is set in each cathode steel bar groove, and cathode steel bar and cathode carbon pieces are consolidated by the bond material layer.
The syndeton of above-mentioned aluminium electrolytic cell cathode charcoal piece and cathode steel bar is provided with in three to six the cathode steel bar grooves any at the left end of cathode carbon pieces and right-hand member, and a cathode steel bar is set in each cathode steel bar groove.
The syndeton of above-mentioned aluminium electrolytic cell cathode charcoal piece and cathode steel bar is provided with charcoal piece groove at side surface at front side, the rear side of cathode carbon pieces.
The syndeton of above-mentioned aluminium electrolytic cell cathode charcoal piece and cathode steel bar is provided with charcoal piece grooved faces on left side and the right side of cathode carbon pieces.
The syndeton of above-mentioned aluminium electrolytic cell cathode charcoal piece and cathode steel bar is provided with charcoal piece groove at side surface at front side, the rear side of cathode carbon pieces, is provided with charcoal piece grooved faces on left side and the right side of cathode carbon pieces.
The syndeton of above-mentioned aluminium electrolytic cell cathode charcoal piece and cathode steel bar, described cathode steel bar is four, and the wide of every cathode steel bar is 32mm, and height is 180 mm, the conduction girth of cathode steel bar is 392 mm on the charcoal piece cross section, and the cross-sectional area of every cathode steel bar is 5760 mm
2
Adopt technique scheme, the utility model does not change the assembling mode of original cathode carbon pieces group in the cathode carbon pieces group, just increase cathode carbon pieces fluting quantity and cathode steel bar quantity, can reduce present cathode carbon pieces group iron carbon pressure falls, cathode carbon pieces group horizontal current component is reduced, thereby reduce the work-ing life that power consumption also promotes electrolyzer greatly.
It below is the concrete analysis that prior art and the utility model compare;
1. the improvement of problem former cathode carbon pieces group iron carbon pressure is fallen
Increase iron carbon contact area can effectively reduce the iron carbon pressure falls, and iron carbon contact area shows as cathode steel bar conduction girth in the cathode carbon pieces cross section, and the utility model technology is compared with the prior art such as following table:
| Title | Prior art | The utility model technology |
| Cathode carbon pieces width mm | 515 | 515 |
| The high mm of cathode steel bar | 180 | 180 |
| The wide mm of cathode steel bar | 65 | 32 |
| Cathode steel bar quantity or slotting number of |
2 | 4 |
| The cathode steel bar cross section total area | 23400 | 23040 |
| Rod iron conductive lengths mm on the charcoal piece cross section | 850 | 1568 |
| Iron carbon contact length increases multiple | 1.00 | 1.85 |
This shows that the utility model technology is guaranteeing can effectively to increase iron carbon contact area in the situation that the negative electrode width is constant, the cathode steel bar total area is constant, falls thereby reduce the iron carbon pressure, reduces the energy consumption of electrolyzer.
2. to the improvement of the relatively large problem of former cathode carbon pieces group horizontal current component
From Fig. 1 and Fig. 2 contrast, find out that Fig. 2 cathode steel bar is wider distribution on the cathode carbon pieces width, therefore more vertical to the electric current downstream to cathode steel bar from the upper surface of cathode carbon pieces, thus reduce to a certain extent the horizontal current component of cathode carbon pieces group.
3. comment about prolonging bath life
Bath life is relevant with many factors, and this use new technique has reduced horizontal current component in the cathode carbon pieces so that the cathode steel bar current load reduces, therefore from these aspects the present invention can be more effective prolongation bath life.
Description of drawings
Fig. 1 is that the utility model master looks and partly cuts open figure.
Fig. 2 is the A-A sectional view of Fig. 1.
Fig. 3 is vertical view of the present utility model.
Fig. 4 is the structural representation of the utility model cathode carbon pieces.
Fig. 5 is the B-B sectional view of Fig. 4.
Fig. 6 is the structural representation of the utility model groove at side surface.
Embodiment
This is such as Fig. 1, Fig. 2, Fig. 3, Fig. 4 and a kind of aluminium electrolytic cell cathode charcoal piece shown in Figure 5 and the syndeton of cathode steel bar, comprise cathode carbon pieces 1, cathode steel bar 2 and bond material layer 3, left end and right-hand member at cathode carbon pieces 1 are provided with four cathode steel bar grooves 6, each cathode steel bar groove 6 is interior to arrange a cathode steel bar 2, and cathode steel bar and cathode carbon pieces are consolidated by the bond material layer.
Also can not establish the bond material layer between the utility model cathode steel bar and the cathode carbon pieces, directly cathode steel bar is stuck on the cathode carbon pieces and just can.
The utility model can be provided with at front side, the rear side at cathode carbon pieces charcoal piece groove at side surface 4.Can also be provided with charcoal piece grooved faces 5 on left side and the right side at cathode carbon pieces.Also can all slot in side and end face, groove at side surface and grooved faces are connected.
In the utility model, described cathode steel bar is four, and the wide of every cathode steel bar is 32mm, and height is 180 mm, and the conduction girth of cathode steel bar is 392 mm on the charcoal piece cross section, and the cross-sectional area of every cathode steel bar is 5760 mm
2(be rectangle, do not calculate the area that rod iron four rounding of angle arcs reduce), four cathode steel bar conduction overall circumferences are 1568 mm on cathode carbon pieces group cross section, the end of four cathode steel bars and the gross contact area of cathode carbon pieces are 23040 mm
2
The utility model cathode steel bar can be three, five, can also be the six roots of sensation, all can reach the purpose of this utility model.
Claims (6)
1. the syndeton of an aluminium electrolytic cell cathode charcoal piece and cathode steel bar, comprise cathode carbon pieces, cathode steel bar and bond material layer, it is characterized in that: left end and right-hand member at cathode carbon pieces are provided with at least three cathode steel bar grooves, a cathode steel bar is set in each cathode steel bar groove, and cathode steel bar and cathode carbon pieces are consolidated by the bond material layer.
2. the syndeton of aluminium electrolytic cell cathode charcoal piece according to claim 1 and cathode steel bar, it is characterized in that: be provided with in three to six the cathode steel bar grooves any at the left end of cathode carbon pieces and right-hand member, a cathode steel bar is set in each cathode steel bar groove.
3. the syndeton of aluminium electrolytic cell cathode charcoal piece according to claim 1 and cathode steel bar, it is characterized in that: front side, rear side at cathode carbon pieces are provided with charcoal piece groove at side surface.
4. the syndeton of aluminium electrolytic cell cathode charcoal piece according to claim 1 and cathode steel bar, it is characterized in that: left side and right side at cathode carbon pieces are provided with charcoal piece grooved faces.
5. the syndeton of aluminium electrolytic cell cathode charcoal piece according to claim 1 and cathode steel bar, it is characterized in that: front side, rear side at cathode carbon pieces are provided with charcoal piece groove at side surface, are provided with charcoal piece grooved faces on left side and the right side of cathode carbon pieces.
6. the syndeton of each described aluminium electrolytic cell cathode charcoal piece and cathode steel bar according to claim 1-5, it is characterized in that: described cathode steel bar is four, the wide of every cathode steel bar is 32mm, height is 180 mm, the conduction girth of cathode steel bar is 392 mm on the charcoal piece cross section, and the cross-sectional area of every cathode steel bar is 5760 mm
2
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220193358 CN202643856U (en) | 2012-05-03 | 2012-05-03 | Connecting structure of cathode carbon block and cathode steel bars of aluminum electrolytic cell |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220193358 CN202643856U (en) | 2012-05-03 | 2012-05-03 | Connecting structure of cathode carbon block and cathode steel bars of aluminum electrolytic cell |
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| CN202643856U true CN202643856U (en) | 2013-01-02 |
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| CN 201220193358 Expired - Lifetime CN202643856U (en) | 2012-05-03 | 2012-05-03 | Connecting structure of cathode carbon block and cathode steel bars of aluminum electrolytic cell |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103243350A (en) * | 2013-05-20 | 2013-08-14 | 中南大学 | Aluminum cell side conductive cathode structure for reducing horizontal current of molten aluminum |
| CN103255436A (en) * | 2013-03-04 | 2013-08-21 | 沈阳北冶冶金科技有限公司 | Cathode carbon block and cathode steel bar combined structure of aluminium electrolytic bath |
| CN108971675A (en) * | 2018-08-27 | 2018-12-11 | 焦作和信冶金科技有限责任公司 | A kind of Mechanical Assembling Method of electrolytic aluminium cathode |
-
2012
- 2012-05-03 CN CN 201220193358 patent/CN202643856U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103255436A (en) * | 2013-03-04 | 2013-08-21 | 沈阳北冶冶金科技有限公司 | Cathode carbon block and cathode steel bar combined structure of aluminium electrolytic bath |
| CN103255436B (en) * | 2013-03-04 | 2016-07-20 | 沈阳北冶冶金科技有限公司 | A kind of combinative structure of aluminium electrolysis cell cathode carbon block and cathode steel bar |
| CN103243350A (en) * | 2013-05-20 | 2013-08-14 | 中南大学 | Aluminum cell side conductive cathode structure for reducing horizontal current of molten aluminum |
| CN103243350B (en) * | 2013-05-20 | 2015-10-21 | 中南大学 | A kind of aluminum cell side conductive cathode structure reducing aluminum liquid horizontal electric current |
| CN108971675A (en) * | 2018-08-27 | 2018-12-11 | 焦作和信冶金科技有限责任公司 | A kind of Mechanical Assembling Method of electrolytic aluminium cathode |
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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: 20130102 |