CN201801607U - Combined anode carbon block for aluminum electrolysis - Google Patents
Combined anode carbon block for aluminum electrolysis Download PDFInfo
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- CN201801607U CN201801607U CN2010205212352U CN201020521235U CN201801607U CN 201801607 U CN201801607 U CN 201801607U CN 2010205212352 U CN2010205212352 U CN 2010205212352U CN 201020521235 U CN201020521235 U CN 201020521235U CN 201801607 U CN201801607 U CN 201801607U
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Abstract
The utility model relates to a prebaked anode structure for aluminum electrolysis, which is characterized in that the anode carbon block comprises at least three sub-carbon blocks of the same or similar shape and size, wherein the sub-carbon blocks are combined into a whole by an anode yoke, and the clearance among the sub-carbon blocks is 5-50 mm. By improving and optimizing the overall structure of the carbon block, the utility model has the following advantages: 1) by dividing the original entire anode carbon block into multiple sub-carbon blocks, anodic gas discharge channels are increased, thereby being beneficial to the discharge of anodic bubbles, reducing the thickness of the gas film layer and lowering the gas film voltage; and 2) the anodic bubbles can be discharged in time, thereby being beneficial to inhibiting the anode effect and creating conditions for realizing zero-effect or ultra low-effect electrolysis. The anode is simple to manufacture and can be manufactured by simply reducing the overall size of the anode without any additional process, thereby being easy to implement.
Description
Technical field
The utility model relates to a kind of prebaked anode of electrolysis of aluminum, is meant a kind of used for aluminium electrolysis built-up type anode carbon block especially, 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, carried out many research around the anode design aspect both at home and abroad, a series of patented technologies have been formed, wherein, Wu Ju etc., Yang Xiaodong etc., Gong Shikai etc., Wang Zuoren etc., Lang Guanghui etc., king have to come etc., high Liu and Ren Zongshun etc. have developed respectively and vertical or horizontally along the anode bottom offered 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.
Although above-mentioned patent possesses certain effect, but still have some shortcomings, show: 1) 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, when the bubble of accumulation is concentrated discharge, still electrolyzer is impacted, cause voltage swing; 2) Kai Cao effect of depth anodic effect, at anode consumption in earlier stage, fluting can effectively be discharged gas, but in the later stage, because anodic consumption, the anode bottom becomes flat again, to lose the effect of fluting this moment, and gas will accumulate in the bottom easily, causes the increase of anode air-film thickness.Can alleviate this problem although increase groove depth, the top of fluting could not be too near to steel pawl (the steel pawl is used to connect anode rod and anode carbon block), otherwise will cause anode early fallout accident! This has just determined that also the degree of depth of fluting can not be too dark.
The utility model content
The purpose of this utility model be to overcome the deficiency of prior art and provide simple and reasonable, processing and manufacturing easily, can effectively improve a kind of used for aluminium electrolysis built-up type anode carbon block that anode gas bubble is discharged efficient.
The technical solution of the utility model is: a kind of used for aluminium electrolysis built-up type anode carbon block, and described anode carbon block is made up of at least 3 block-shaped and big or small identical or akin sub-charcoal pieces, and described sub-charcoal piece is combined into an integral body by anode steel jaw.
In the utility model, the spacing between the described sub-charcoal piece is 5～50mm, and every sub-charcoal piece is connected with an anode steel jaw at least.
In the utility model, described sub-charcoal piece bottom is provided with air-guide groove, and the width of described air-guide groove is 10～30mm, and height is 100～300mm,
In the utility model, be connected by the inclined-plane between described sub-charcoal piece bottom surface and the side, the angle α between described inclined-plane and the bottom surface is 5 °～45 °.
The utility model compared with prior art has the following advantages owing to adopt said structure:
1) original monoblock anode carbon block is decomposed into plurality of sub charcoal piece, and air-guide groove is set in sub-carbon piece bottom and is connected by the inclined-plane between sub-charcoal piece bottom surface and the side, increased the passage of anode discharge gas, reduced the resistance of anode discharge gas, help the discharge of anode gas bubble, reduce the air film layer thickness, thereby reduce air film voltage;
2) the timely discharge of anode gas bubble helps suppressing the generation of anode effect, for realizing that " null effect " or " ultralow effect " electrolysis creates conditions.
3) this anode is made simply, only needs the anode overall dimensions is diminished, and need not any additional process, is easy to realize.
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.
In the accompanying drawing, 1-charcoal piece, 2-steel pawl, 3-blast welding block, 4-aluminium guide bar, the 5-phosphorus pig iron.
Embodiment
Embodiment 1:
Referring to accompanying drawing 1,2,3, in the present embodiment, by long 600～700mm, wide 300～400mm, 4 sub-charcoal pieces 1 of height 500～560mm, the anode total length that is combined into is 1300～1600mm, wide 600～700mm, high 500～560mm, the existing anode of fundamental sum is consistent, and has increased the anode gas bubble discharge-channel of 3 width about 10～30mm between 4 sub-charcoal pieces 1.The existence of these passages makes and carries out in the process CO that anode produced in electrolysis of aluminum
2Bubbles such as/CO can be overflowed from the anode bottom rapidly, thereby reduce the air film layer thickness, so reduce air film resistance, improve electrolyzer stability, finally improve electrolytic cell currents efficient and reduce electrolysis energy consumption.
Embodiment 2:
Referring to accompanying drawing 4,5,6, in the present embodiment, sub-anode carbon block size is the same substantially with embodiment 1.But, in order to increase the effect that bubble is discharged, between sub-charcoal piece bottom surface and side, being connected by the inclined-plane, the angle α between described inclined-plane and the bottom surface is 5 °～45 °.The existence on these inclined-planes makes anode in consumption process, remains this shape, and bubble is discharged electrolyzer from the anode bottom by the exhaust-duct with as easy as rolling off a log under the effect of interfacial tension, avoided large volume CO
2The growth of/CO bubble and formation, thus the air film layer thickness reduced, so reduce air film resistance, improve electrolyzer stability, finally improve electrolytic cell currents efficient and reduce electrolysis energy consumption.
Embodiment 3:
Referring to accompanying drawing 7,8,9, in the present embodiment, sub-anode carbon block and embodiment 1 are consistent substantially, but the bottom at each sub-charcoal piece increases by 1～2 air-guide groove (in this legend being two), air guide furrow width 10～30mm, high 100～300mm, these air-guide grooves cooperate the gap between the sub-charcoal piece, will help CO more
2/ CO bubble can be overflowed from the anode bottom rapidly, thereby reduces the air film layer thickness, so reduce air film resistance, improves electrolyzer stability, finally improves electrolytic cell currents efficient and reduces electrolysis energy consumption.
Claims (4)
1. used for aluminium electrolysis built-up type anode carbon block is characterized in that: described anode carbon block by at least 3 block-shaped and identical or akin sub-charcoal pieces of size form, described sub-charcoal piece is combined into an integral body by anode steel jaw.
2. used for aluminium electrolysis built-up type anode carbon block according to claim 1 is characterized in that: the spacing between the described sub-charcoal piece is 5～50mm, and every sub-charcoal piece is connected with an anode steel jaw at least.
3. used for aluminium electrolysis built-up type anode carbon block according to claim 2 is characterized in that: described sub-charcoal piece bottom is provided with air-guide groove, and the width of described air-guide groove is 10～30mm, and height is 100～300mm,
4. according to claim 1,2 or 3 any described used for aluminium electrolysis built-up type anode carbon blocks, it is characterized in that: be connected by the inclined-plane between described sub-charcoal piece bottom surface and the side, the angle α between described inclined-plane and the bottom surface is 5 °～45 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205212352U CN201801607U (en) | 2010-09-08 | 2010-09-08 | Combined anode carbon block for aluminum electrolysis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205212352U CN201801607U (en) | 2010-09-08 | 2010-09-08 | Combined anode carbon block for aluminum electrolysis |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201801607U true CN201801607U (en) | 2011-04-20 |
Family
ID=43871122
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205212352U Expired - Fee Related CN201801607U (en) | 2010-09-08 | 2010-09-08 | Combined anode carbon block for aluminum electrolysis |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201801607U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104962950A (en) * | 2015-06-18 | 2015-10-07 | 包头市中硕焊接科技有限公司 | Method for reducing occurrence of anode effect during aluminum electrolysis and corresponding anode structure |
-
2010
- 2010-09-08 CN CN2010205212352U patent/CN201801607U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104962950A (en) * | 2015-06-18 | 2015-10-07 | 包头市中硕焊接科技有限公司 | Method for reducing occurrence of anode effect during aluminum electrolysis and corresponding anode structure |
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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: 20110420 Termination date: 20140908 |
|
| EXPY | Termination of patent right or utility model |