CN201778126U - Honeycomb-like prebaked anode for aluminum electrolysis - Google Patents
Honeycomb-like prebaked anode for aluminum electrolysis Download PDFInfo
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- CN201778126U CN201778126U CN2010205212526U CN201020521252U CN201778126U CN 201778126 U CN201778126 U CN 201778126U CN 2010205212526 U CN2010205212526 U CN 2010205212526U CN 201020521252 U CN201020521252 U CN 201020521252U CN 201778126 U CN201778126 U CN 201778126U
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Abstract
The utility model relates to a prebaked anode structure for aluminum electrolysis, which is characterized in that a plurality of groups of gas guide holes which are distributed symmetrically are arranged in the height direction or the length direction of a prebaked anode so as to ensure that bubbles produced at the bottom of the anode during the electrolysis process of a carbon anode can be uniformly discharged in time, the gas guide holes can be vertical holes, horizontal holes or inclined holes, and the whole anode forms the structure which is similar to a honeycomb. The prebaked anode structure has the following advantages: (1) increasing a large number of anode gas discharge channels which are distributed uniformly, being conductive to uniformly discharging the anode bubbles in time, reducing the thickness of a gas film layer, effectively slowing down voltage swing produced by aggregation of the bubbles at the bottom of the carbon anode and effectively reducing electrolysis energy consumption caused by pressure drop of the gas film at the bottom of the carbon anode and aluminum oxide concentration polarization voltage; and (2) being capable of playing effects during the whole using period of the electrolysis. The prebaked anode structure is simple for manufacture, only needs to modify a mold during vibration molding of the anode, does not need to use additional processes, and is easy for implementation.
Description
Technical field
The utility model relates to a kind of used for aluminium electrolysis prebaked anode, and the cellular prebaked anode of particularly a kind of used for aluminium electrolysis belongs to technical field of aluminum electrolysis.
Background technology
In the Aluminium Electrolysis process, the use efficiency of carbon anode plays a part very crucial to the stability of electrolysis production, and directly affect the key technical indexes of electrolysis production such as electrolysis energy consumption, current efficiency and ton aluminium charcoal consumption etc., thereby be called as " heart " of aluminium cell.
In the electrolytic process, under the effect of galvanic current following electrode reaction will take place:
2Al
2O
3+3C＝4Al+3CO
2 (1)
Al
2O
3+3C＝2Al+3CO (2)
CO in the above-mentioned reaction
2All produce with CO at anode bottom position, under the normal circumstances, CO
2Account for about 70%, CO accounts for about 30%.The tradition pre-baked carbon anode is because anode bottom area is big and unfairness, and the bottom is all soaked into and be in full closeding state, the CO that carbon anode produces in fused electrolyte in electrolytic process in addition
2Be difficult to timely discharge with CO gas, produce certain air film voltage thus and make the bath voltage of Aluminium Electrolysis raise gradually, cause the increase of power consumption; In addition, when anode bottom bubble runs up to a certain degree, will break through the fused electrolyte layer and concentrated the discharge, cause bath voltage swing aggravation, be unfavorable for the stability of electrolyzer production run.
The gas that is produced in order to discharge carbon anode timely and effectively, people have taked some measures around the anode design aspect, have formed some patented technologies.Wu Ju etc., Yang Xiaodong etc., Gong Shikai etc., Wang Zuoren etc., Lang Guanghui etc., king have to come contour Liu and Ren Zongshun etc. to develop respectively vertical or horizontally along the anode bottom to offer level or the inclined groove that the depth and width differ, with utility model and the patent of invention that reaches timely and effective discharge anodic gas; Tian Yong etc., Zhai Suoyun etc., Xi Canming, Qin Xiaoming and Qin Ziming and Wang Shaopeng etc. have invented the utility model patent of carbon anode bottom, sidepiece chamfering (square or circular), and its purpose also is timely and effective discharge anodic gas and strengthens the anode potential resistance to electrolyte contamination and wash away.
With regard to the bottom slot anode, because fluting limited amount (maximum two), the bubble that is positioned at the groove edge position is easy to discharge, and distance fluting anode bottom area far away still easily accumulates bubble, so just cause two consequences, the first is concentrated when discharging when the bubble of accumulation and still electrolyzer is impacted, and causes voltage swing; It two is that the anode consumption ununiformity strengthens, along the both sides of groove because bubble is constantly discharged at continuous consumption, apart from groove position far away owing to the insulating film that bubble produces influences electrode reaction, cause the unfairness more of anode bottom, and the easier electrolyzer that makes produces breeze under the ionogen souring.Equally, anode (no matter being corner angle or circular arc angle) for limit portion and sidepiece chamfering, thereby also just wash away and reduce in the groove in the breeze slowing down the ionogen antianode, make the anode bottom discharge easily by the bubble that the position forms of near part all around, far away more apart from change portion, the complexity that the bubble that is especially produced in anode bottom centre is discharged is almost the same with conventional anode.
The utility model content
The purpose of this utility model be to overcome the deficiency of prior art and provide a kind of contour structures rationally, processing is simple, help the cellular prebaked anode of used for aluminium electrolysis that anode gas bubble is discharged.
The technical solution of the utility model: the cellular prebaked anode of a kind of used for aluminium electrolysis is to be provided with the gas ports that many groups are symmetrically distributed in the short transverse of prebaked anode or length direction.
In the utility model, described gas port is at least a along in the upright opening of described anode short transverse or the angling hole; Described gas port is the lateral aperture along described anode length direction, and whole anode forms similar cellular structure.
In the utility model, described gas port is for connecting the anodic through hole or partly connecting at least a in the anodic blind hole.
In the utility model, described gas port cross section is circular hole or polygonal hole, and its diameter or circumcircle diameter are 10mm～60mm.
In the utility model, the spacing of gas port is 50mm～300mm.
In the utility model, be provided with the guiding ditch along the length direction of described anode bottom, described air-guide groove is communicated with upright opening or angling hole along described anode short transverse.
The utility model compared with prior art, has following advantage owing to adopt said structure:
1) owing to increased a large amount of equally distributed anode discharge gas passages, help in time and evenly discharging of anode gas bubble, reduce the air film layer thickness, thereby the voltage swing that can effectively slow down carbon anode bottom bubble coalescence and produce effectively reduces the electrolysis energy consumption that causes because of the air film pressure drop of carbon anode bottom and aluminum oxide concentration polarization voltage;
2) no matter the utility model anodic gas port perforate direction all is communicated to anode top, so the function that can not lose its air guide along with anodic consumption of these gas ports, promptly gas port can all be brought into play effect in the whole life cycle of anode electrolysis consumption.
3) this anode is made simply, and only needing when anode vibratory compaction mould made amendment get final product, need not additional process, is easy to realization.
Description of drawings
Accompanying drawing 1 is the front view of the utility model anode embodiment 1;
Accompanying drawing 2 is the side-view of the utility model anode embodiment 1;
Accompanying drawing 3 is the vertical view of the utility model anode embodiment 1;
Accompanying drawing 4 is the front view of the utility model anode embodiment 2;
Accompanying drawing 5 is the side-view of the utility model anode embodiment 2;
Accompanying drawing 6 is the vertical view of the utility model anode embodiment 2;
Accompanying drawing 7 is the front view of the utility model anode embodiment 3;
Accompanying drawing 8 is the side-view of the utility model anode embodiment 3;
Accompanying drawing 9 is the vertical view of the utility model anode embodiment 3;
Accompanying drawing 10 is the front view of the utility model anode embodiment 4;
Accompanying drawing 11 is the side-view of the utility model anode embodiment 4;
Accompanying drawing 12 is the vertical view of the utility model anode embodiment 4;
Accompanying drawing 13 is the front view of the utility model anode embodiment 5;
Accompanying drawing 14 is the side-view of the utility model anode embodiment 5;
Accompanying drawing 15 is the vertical view of the utility model anode embodiment 5.
In the accompanying drawing: 1-anode carbon block, 2-steel pawl, 3-blast welding block, 4-aluminium guide bar, the 5-phosphorus pig iron, 6-gas port, 7-air-guide groove.
Embodiment
Embodiment 1:
Referring to accompanying drawing 1,2,3, present embodiment is provided with vertically the cellular anode of (promptly vertical) perforate for anode carbon block 1.In the present embodiment, anodic total length 1300～1700mm, wide 600～700mm, high 500～600mm, be consistent with existing anode, but arrange vertical gas port 6 in the making along its length three of anode carbon block, gas port is circle or Polygons, its diameter or circumcircle diameter are 10-60mm, form the structure of similar honeycomb.The existence of these through holes makes and carries out in the process in electrolysis of aluminum that the bottom of charcoal piece 4 produces less CO
2/ CO bubble can be discharged through these gas ports from the anode bottom rapidly, thereby reduces the air film layer thickness, reduces air film resistance, improves electrolyzer stability, finally improves electrolytic cell currents efficient and reduces electrolysis energy consumption.
Embodiment 2:
Referring to accompanying drawing 4,5,6, present embodiment is provided with the laterally cellular anode of (being level) perforate for anode carbon block 1.In the present embodiment, the anode carbon block size is the same substantially with embodiment 1, and the mode of offering that its difference part is gas port 6 is by the vertical horizontal direction that vertically becomes, and gas port is circle or Polygons, and its diameter or circumcircle diameter are 10-60mm.This embodiment both can increase the anodic conductive area, can increase the passage that gas overflows in the anode consumption process again, thereby reduced the air film layer thickness, reduced air film resistance, improved electrolyzer stability, finally improved electrolytic cell currents efficient and reduced electrolysis energy consumption.
Embodiment 3:
Referring to accompanying drawing 7,8,9, present embodiment is provided with the cellular anode of inclination perforate for anode carbon block 1.In the present embodiment, the anode carbon block size is the same substantially with embodiment 1, but, in order further to increase the anodic physical strength and to guarantee in the continuous consumption process of anodic, gas can effectively be discharged, and all gas ports 6 are set to the inclination mode, and described gas port 6 is 15 °～75 ° with respect to the angle [alpha] of the inclination on the base of anode carbon block 1, gas port is circle or Polygons, and its diameter or circumcircle diameter are 10-60mm.Because being obliquely installed of air-guide groove, the discharge of gas will more be helped, and, owing to be set to arranging of multilayer gas port, guaranteed to have all the time in the anode consumption process existence of gas port, this will more help the discharge of bubble and electrolytical stability will be had great function, thereby reduce the air film layer thickness, reduce air film resistance, improve electrolyzer stability, finally improve electrolytic cell currents efficient and reduce electrolysis energy consumption.
Embodiment 4:
Referring to accompanying drawing 10,11,12, present embodiment is provided with vertically the cellular anode that (promptly vertical) perforate combines with bottom slot for anode carbon block 1.In the present embodiment, anode aperture is the same with embodiment 1, but increases by two air-guide grooves 7 at the correspondence position of anode bottom opening.Gas in the air-guide groove can be discharged fast by gas port, and gas port can be circle, also can be the Polygons of sub-circular, and its diameter or circumcircle diameter are 10-60mm, and the air-guide groove width is 10～40mm, highly is 100～300mm.By being used of gas port and air-guide groove, will more help the quick discharge of anodic gas, thereby reduce the air film layer thickness, reduce air film resistance, improve electrolyzer stability, finally improve electrolytic cell currents efficient and reduce electrolysis energy consumption.
Referring to accompanying drawing 13,14,15, present embodiment is provided with vertically (promptly vertical) perforate, horizontal cross hole and inclination transverse holes for anode carbon block 1.In the present embodiment, vertical open pores and embodiment are 1 similar, horizontal bore and embodiment are 2 similar, level of incline perforate and embodiment 3 are similar, difference is three's organic assembling (array mode is not limited to this embodiment, and available multiple combined method is used in combination).Gas port can be circle, also can be the Polygons of sub-circular, and its diameter or circumcircle diameter are 10-60mm.Being used in combination of level, vertical and inclination gas port will more help the quick discharge of anodic gas, thereby reduce the air film layer thickness, reduces air film resistance, improves electrolyzer stability, finally improves electrolytic cell currents efficient and reduces electrolysis energy consumption.
Claims (6)
1. cellular prebaked anode of used for aluminium electrolysis is characterized in that: short transverse or length direction at prebaked anode are provided with the gas ports that many groups are symmetrically distributed.
2. the cellular prebaked anode of used for aluminium electrolysis according to claim 1 is characterized in that: at least a for along in the upright opening of described anode short transverse or the angling hole of described gas port; Described gas port is the lateral aperture along described anode length direction.
3. the cellular prebaked anode of used for aluminium electrolysis according to claim 2 is characterized in that: described gas port is for connecting the anodic through hole or partly connecting at least a in the anodic blind hole.
4. the cellular prebaked anode of used for aluminium electrolysis according to claim 3 is characterized in that: the spacing of gas port is 50mm～300mm
5. according to any cellular prebaked anode of described used for aluminium electrolysis of claim 1～4, it is characterized in that: described gas port cross section is circular hole or polygonal hole, and its diameter or circumcircle diameter are 10mm～60mm.
6. the cellular prebaked anode of used for aluminium electrolysis according to claim 2 is characterized in that: the length direction along described anode bottom is provided with the guiding ditch, and described air-guide groove is communicated with upright opening or angling hole along described anode short transverse.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205212526U CN201778126U (en) | 2010-09-08 | 2010-09-08 | Honeycomb-like prebaked anode for aluminum electrolysis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205212526U CN201778126U (en) | 2010-09-08 | 2010-09-08 | Honeycomb-like prebaked anode for aluminum electrolysis |
Publications (1)
| Publication Number | Publication Date |
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| CN201778126U true CN201778126U (en) | 2011-03-30 |
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|---|---|---|---|
| CN2010205212526U Expired - Fee Related CN201778126U (en) | 2010-09-08 | 2010-09-08 | Honeycomb-like prebaked anode for aluminum electrolysis |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102191516A (en) * | 2011-04-27 | 2011-09-21 | 山东前昊炭素有限公司 | Prebaked anode for aluminum electrolysis, and preparation method and production device thereof |
| CN102560546A (en) * | 2010-12-07 | 2012-07-11 | 冯乃祥 | Anode structure of aluminum electrolytic tank |
| CN102851701A (en) * | 2011-07-01 | 2013-01-02 | 湖南晟通科技集团有限公司 | Multi-groove multi-hole prebaked anode |
| CN109852999A (en) * | 2019-04-15 | 2019-06-07 | 谢林 | The production method and anode carbon block of a kind of mold, anode carbon block |
| WO2023111899A1 (en) * | 2021-12-15 | 2023-06-22 | Arcelormittal | Electrolysis apparatus for the production of iron with an improved gas permeable anode plate |
-
2010
- 2010-09-08 CN CN2010205212526U patent/CN201778126U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102560546A (en) * | 2010-12-07 | 2012-07-11 | 冯乃祥 | Anode structure of aluminum electrolytic tank |
| CN102191516A (en) * | 2011-04-27 | 2011-09-21 | 山东前昊炭素有限公司 | Prebaked anode for aluminum electrolysis, and preparation method and production device thereof |
| CN102851701A (en) * | 2011-07-01 | 2013-01-02 | 湖南晟通科技集团有限公司 | Multi-groove multi-hole prebaked anode |
| CN102851701B (en) * | 2011-07-01 | 2016-07-20 | 湖南晟通科技集团有限公司 | A kind of multiple-grooved multiple-hole prebaked anode |
| CN109852999A (en) * | 2019-04-15 | 2019-06-07 | 谢林 | The production method and anode carbon block of a kind of mold, anode carbon block |
| WO2023111899A1 (en) * | 2021-12-15 | 2023-06-22 | Arcelormittal | Electrolysis apparatus for the production of iron with an improved gas permeable anode plate |
| WO2023111643A1 (en) * | 2021-12-15 | 2023-06-22 | Arcelormittal | Electrolysis apparatus for the production of iron with an improved gas permeable anode plate |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110330 Termination date: 20140908 |
|
| EXPY | Termination of patent right or utility model |