CN104694963A - Pre-baking anode carbon block - Google Patents
Pre-baking anode carbon block Download PDFInfo
- Publication number
- CN104694963A CN104694963A CN201310657557.8A CN201310657557A CN104694963A CN 104694963 A CN104694963 A CN 104694963A CN 201310657557 A CN201310657557 A CN 201310657557A CN 104694963 A CN104694963 A CN 104694963A
- Authority
- CN
- China
- Prior art keywords
- carbon
- carbon block
- bowl
- block
- iron
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 63
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 62
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 abstract description 12
- 229910052782 aluminium Inorganic materials 0.000 abstract description 12
- QMQXDJATSGGYDR-UHFFFAOYSA-N methylidyneiron Chemical compound [C].[Fe] QMQXDJATSGGYDR-UHFFFAOYSA-N 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 6
- 229910000805 Pig iron Inorganic materials 0.000 abstract description 5
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 abstract description 4
- 229910052698 phosphorus Inorganic materials 0.000 abstract description 4
- 239000011574 phosphorus Substances 0.000 abstract description 4
- 238000005266 casting Methods 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 239000004020 conductor Substances 0.000 description 10
- 239000004411 aluminium Substances 0.000 description 7
- 229910000831 Steel Inorganic materials 0.000 description 5
- 238000005868 electrolysis reaction Methods 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 230000005611 electricity Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 229910017112 Fe—C Inorganic materials 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 150000001721 carbon Chemical class 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000007405 data analysis Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000001404 mediated effect Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000004451 qualitative analysis Methods 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- 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
- C25C3/12—Anodes
- C25C3/125—Anodes based on carbon
Landscapes
- 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 present invention discloses a pre-baking anode carbon block, which comprises carbon bowls (2) on the upper end surface of a carbon block (1), wherein two communication grooves parallel to the length direction of the carbon block (1) are arranged between the adjacent carbon bowls (2) and are simultaneously tangent to one ends of the two adjacent carbon bowls (2), and the depth of the communication groove (3) and the depth of the carbon bowl (2) are equal. According to the present invention, the iron-carbon pressure reducing of the pre-baking anode carbon block is less than the iron-carbon pressure reducing of the existing structure and the casting process of the high phosphorus pig iron is easy and has the good effect, such that the pre-baking anode carbon block is suitable for the electrolytic aluminum plant having the supported carbon pre-baking anode production, especially the current carbon pre-baking anodes with all specifications can be pre-heated, and the industrial application prospects are broad.
Description
Technical field
The invention belongs to Aluminium Electrolysis field, particularly a kind of carbon bowl structure of pre-baked anode carbon block surface.
Background technology
In Aluminium Electrolysis process, anode drop is the integral part of electrolysis voltage composition, and be also the ineffective power consumption do not brought benefits, its value is lower, and energy consumption is lower.The pressure drop integral part of anode block has: the pressure drop of (1) anode self; (2) iron-carbon pressure falls; (3) steel pawl pressure drop; (4) blast welding block pressure drop; (5) aluminium guide bar pressure drop.Fall mainly for iron-carbon pressure below and discuss.
According to formula U=I × R, when electric current one timing, determine resistance and just can obtain pressure drop numerical value.From physically learning, the resistance formula of conductor is R=ρ × L/S.Wherein ρ represents that conductor material hinders the ability of conduction of current, is called resistivity, and it is the intrinsic character of material; L represents the length (rice) of conductor material; S represents the sectional area (square metre) of conductor material.From above formula, resistance and its cross-sectional area of conductor are inversely proportional to, and namely sectional area is larger, and the resistance of conductor is fewer.
In order to increase conductor contact sectional area, further minimizing iron-carbon pressure falls, the multiple aluminium manufacturer of Present Domestic is out-of-date in Aluminium Electrolysis, (effect of carbon bowl is for inserting steel pawl to a series of carbon bowls usually in pre-baked anode carbon block upper surface, then to cast the phosphorus pig iron) between fluting (see accompanying drawing 1 and accompanying drawing 2), and chisel a series of skewed slot in carbon bowl inner wall surface.Certainly, except aforesaid way, also have and reduce pressure drop by increasing carbon bowl aperture etc.These solution technique theories are distinct, simple, intuitive, existing qualitative analysis, and have again the data analysis quantitatively, and combine with industry is actual, implement difficulty very low, economic benefit is but very high, is rare energy conservation.
Compare other existing upper strata to applaud " the energy-conservation hi-tech of electrolysis of aluminum " that lower floor grieves, relative superiority or inferiority is vertical to be sentenced.
After practical application, find that technique scheme also has very large room for improvement, such as pour into a mould the mobility during phosphorus pig iron, although current mode of grooving makes to be interconnected between carbon bowl, flow effect during actual cast or not good enough; The cross-sectional area of conductor that and for example wall scroll fluting increases amasss the possibility also having and continue to increase, etc.
Summary of the invention
The technical problem to be solved in the present invention is: provide a kind of pre-baked anode carbon block, and iron-carbon pressure falls that to compare existing structure less, simultaneously simpler, the better effects if of the casting process of phosphoric pig iron.
The technical solution used in the present invention is: a kind of pre-baked anode carbon block, comprises the carbon bowl of carbon block upper surface, has two connectivity slots being parallel to carbon block length direction between adjacent carbons bowl.After this adjustment, once phosphorus pig iron casting complete, its cross-sectional area of conductor of structure that the structure of two connectivity slots compares a fluting amasss acquisition significantly to be increased, thus the contact area between iron-carbon increases, and can continue to reduce iron-carbon pressure and fall, reduce meaningless energy consumption.In addition after adding two connectivity slots, all carbon bowls are connected together, and define a closed circulation, have both added the passage of molten iron flow when pouring into a mould high ferrophosphorus like this, too increase contacting section and amass.
Connectivity slot is simultaneously tangent with one end of two adjacent carbons bowls, and the connectivity slot degree of depth is identical with the carbon bowl degree of depth.The high ferrophosphorus that two connectivity slots at carbon bowl two ends are poured into a mould, can be formed at groove internal cause thermal expansion and form holding force to the carbon block part in the middle of connectivity slot, improve the weight capacity of steel pawl, reduces the probability of occurrence that anode takes off pawl.
The width of connectivity slot is 10% ~ 15% of carbon bowl diameter.The groove width of connectivity slot can not be excessive, otherwise on the high ferrophosphorus of building, groove after heat is expanded excessive, can cause the cracking failure on anode top carbon neck (namely exceeding the upper ramps part of anode substrate).
The present invention, relative to prior art, is originally to lead between each carbon bowl at anode top carbon, and the fluting mediated moves to carbon bowl two ends to both sides, forms two connectivity slots.It is little that the present invention seems change, also very simple---but its contact area increased is double, and iron-carbon pressure falls and can reduce numerical value on the original basis and can not underestimate.Owing to defining communicating passage between each carbon bowl, when pouring into a mould high ferrophosphorus, mobility is better, and the effect of cast is better.
The present invention in the specific implementation, or welds two block plates between the bowl hole forming head mould tool of carbon block, and the tangent distance on steel plate length and forming mould head between bowl bore ends is equal, the deep equality of steel plate length degree and carbon bowl.
The present invention is applicable to have the electrolytic aluminium factory of carbon element prebaked anode of forming a complete production network, and be applicable to the carbon element prebaked anode of the current all specifications of preheating, industrial applications has a extensive future.
Accompanying drawing explanation
Fig. 1 is the structural representation of existing pre-baked anode carbon block;
Fig. 2 is the vertical view of Fig. 1;
Fig. 3 is structural representation of the present invention;
Fig. 4 is the vertical view of Fig. 3.
Embodiment
As shown in Figure 3 and Figure 4, a kind of pre-baked anode carbon block, comprises carbon block 1, the equally spaced same aperture carbon bowl 2 that the carbon on carbon block 1 leads 4 upper surfaces to have 6 to be in line, and spacing is equal with the aperture of carbon bowl 2.Two connectivity slots 3 being parallel to carbon block 1 length direction are had between adjacent carbons bowl 2.Every connectivity slot 3 is simultaneously tangent with one end of two adjacent carbons bowls 2, and connectivity slot 3 degree of depth is identical with carbon bowl 2 degree of depth, and the width of connectivity slot 3 is 10% of carbon bowl 2 diameter.6 carbon bowls 2 are connected together by connectivity slot 3.So, after pouring high ferrophosphorus, not only cross-sectional area of conductor is long-pending adds, but also defines holding force to the carbon block part between two connectivity slots 3.
After have employed above-mentioned carbon block structure, based on 190kA electrolyzer, the current efficiency by 91% calculates, the ton aluminum direct current consumes can reduce (2980 × 0.02241 ÷ 0.91=) 73.4 kWh, and in electricity price 0.60 yuan/kWh, ton aluminium can economize on electricity 44.04 yuan.Because the numerical value of the more original wall scroll fluting of Fe-C contact area increases, Fe-C pressure drop Conservative estimation is also at 33 more than mv (height is then greater than 45mv), and the ton aluminum direct current consumes can reducing amount >=100 kWh.According to the electrolytic aluminum annual production being greater than 400,000 tons, more than 4,000 ten thousand degree can be economized on electricity year, power cost saving (0.55 × 4000=) 2,200 ten thousand yuan.
The present invention is that antianode part has carried out effective change, is applicable to the electrolyzer of existing all various different electric currents.If the means such as the skewed slot quantity of cooperation increase carbon bowl inwall or carbon bowl diameter, significantly can also promote on energy-saving effect.
Claims (3)
1. a pre-baked anode carbon block, comprises the carbon bowl (2) of carbon block (1) upper surface, it is characterized in that: have two connectivity slots (3) being parallel to carbon block (1) length direction between adjacent carbons bowl (2).
2. a kind of pre-baked anode carbon block according to claim 1, is characterized in that: connectivity slot (3) is simultaneously tangent with one end of two adjacent carbons bowls (2), and connectivity slot (3) degree of depth is identical with carbon bowl (2) degree of depth.
3. a kind of pre-baked anode carbon block according to claim 1, is characterized in that: the width of connectivity slot (3) is 10% ~ 15% of carbon bowl (2) diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310657557.8A CN104694963A (en) | 2013-12-09 | 2013-12-09 | Pre-baking anode carbon block |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310657557.8A CN104694963A (en) | 2013-12-09 | 2013-12-09 | Pre-baking anode carbon block |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104694963A true CN104694963A (en) | 2015-06-10 |
Family
ID=53342496
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310657557.8A Pending CN104694963A (en) | 2013-12-09 | 2013-12-09 | Pre-baking anode carbon block |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104694963A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105887141A (en) * | 2016-06-22 | 2016-08-24 | 广西百色银海铝业有限责任公司 | Method for preventing yokes from bending |
| CN115821330A (en) * | 2022-12-07 | 2023-03-21 | 贵阳铝镁设计研究院有限公司 | Carbon anode structure capable of reducing voltage drop and balancing steel claw current |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201793772U (en) * | 2010-09-30 | 2011-04-13 | 湖南创元新材料有限公司 | Prebaked anode with profiled carbon bowls |
| CN201971907U (en) * | 2011-02-17 | 2011-09-14 | 湖南晟通科技集团有限公司 | Anode carbon bowl |
| CN202246913U (en) * | 2011-08-30 | 2012-05-30 | 湖南创元新材料有限公司 | Prebaked anode carbon block |
| CN202401142U (en) * | 2011-11-29 | 2012-08-29 | 郑州龙祥铝业有限公司 | Anode carbon block |
| CN202430300U (en) * | 2011-12-14 | 2012-09-12 | 河南永登铝业有限公司阳城分公司 | Novel energy-saving edge-free anode carbon block |
-
2013
- 2013-12-09 CN CN201310657557.8A patent/CN104694963A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201793772U (en) * | 2010-09-30 | 2011-04-13 | 湖南创元新材料有限公司 | Prebaked anode with profiled carbon bowls |
| CN201971907U (en) * | 2011-02-17 | 2011-09-14 | 湖南晟通科技集团有限公司 | Anode carbon bowl |
| CN202246913U (en) * | 2011-08-30 | 2012-05-30 | 湖南创元新材料有限公司 | Prebaked anode carbon block |
| CN202401142U (en) * | 2011-11-29 | 2012-08-29 | 郑州龙祥铝业有限公司 | Anode carbon block |
| CN202430300U (en) * | 2011-12-14 | 2012-09-12 | 河南永登铝业有限公司阳城分公司 | Novel energy-saving edge-free anode carbon block |
Non-Patent Citations (1)
| Title |
|---|
| 赵红军: "一种预焙阳极碳块相邻碗孔之间开槽技术节能降耗的作用", 《材料与冶金学报》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105887141A (en) * | 2016-06-22 | 2016-08-24 | 广西百色银海铝业有限责任公司 | Method for preventing yokes from bending |
| CN115821330A (en) * | 2022-12-07 | 2023-03-21 | 贵阳铝镁设计研究院有限公司 | Carbon anode structure capable of reducing voltage drop and balancing steel claw current |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150610 |
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| WD01 | Invention patent application deemed withdrawn after publication |