CN104694962A - Perforated anode carbon block - Google Patents
Perforated anode carbon block Download PDFInfo
- Publication number
- CN104694962A CN104694962A CN201310657525.8A CN201310657525A CN104694962A CN 104694962 A CN104694962 A CN 104694962A CN 201310657525 A CN201310657525 A CN 201310657525A CN 104694962 A CN104694962 A CN 104694962A
- Authority
- CN
- China
- Prior art keywords
- carbon block
- perforation
- side direction
- hole
- anode
- 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
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 invention discloses a perforated anode carbon block. The perforated anode carbon block comprises perforating holes (2) on the upper surface of a carbon block (1), and a lateral surface of the carbon block (1) also has lateral perforating holes (3) communicated with the perforating holes (2). As a preferred example, two rows of lateral perforating holes (3) are disposed on the lateral surface, and the axes are both parallel to the upper surface of the carbon block (1). Particularly, for the anode carbon block with a height of 500-700mm, the upper lateral perforating holes (3) among the two rows of lateral perforating holes (3) are 45cm away from the lower surface of the carbon block (1), and the lower lateral perforating holes (3) among the two rows of lateral perforating holes (3) are 30cm away from the lower surface of the carbon block (1). According to the perforated anode carbon block provided by the invention, the reaction gas can be effectively discharged, the pressure drop caused by the undersurface gas film can be reduced, also the anode carbon block is convenient to process and easy to implement.
Description
Technical field
The invention belongs to Aluminium Electrolysis field, particularly a kind of perforation structure of anode block.
Background technology
In Aluminium Electrolysis process, due to the large section of carbon annode material, reactant gases is crushed on bottom anode, thus forms the air film that one deck covers bottom, hinder effectively carrying out of reaction, add ineffective energy consumption.The air film that this layer of reactant gases is formed, can occupy 0.25V in the typical 4.00V voltage of electrolyzer, be lost work use, therefore answers idea to drive away.The method extensively taked at present is slotted on anode, and the anode after fluting can obtain no small income, but have caused implementation result to be beaten the very heavy discount of 3 defects below:
1 increases many due to the area contacted with surrounding atmosphere after anode grooving, and high-temperature zone Nei Budaer reacts increase, and unnecessary consumption and the carbon quantity of slag of anode have increase;
2 due to electrolysis of aluminum reaction consume anode, anode height is to be about the speed of 1.5cm every day in reduction, and be limited to the height (15cm or 30 ~ 33cm) of anode grooving, the usage period of fluting anode technology is 10 days or 20 ~ 22 days, in the anode life cycle of about 1 month, this technology can not be utilized effectively;
On 3 fluting anodes after groove due to the temperature difference of upper and lower more than 400 degree, under thermal expansion, the groove root of anode of slotting is the weak link that anode crack falls block breakage.
Be directed to this, fluting anode problem in use is not only avoided and solved to punched positive technology, and can evacuate the gas overstock bottom anode effectively in time, local gas is avoided to be detained, thus reach shortening pole span, reduce bath voltage, realize energy-saving and cost-reducing object.
To be taken the lead " the production, teaching & research alliance " that four units of electrical carbon element company limited form in Central South University, Chongqing University of Science and Technology, Chongqing by Chongqing Tian Tai Chinalco, bear great success.After on January 29th, 2011,3 punched positive technology electrolytic tanks successfully obtained appraisal of scientific and technological achievements, " punched positive electrolysis tech industry broadened application " is in obtaining qualification more a few days ago.In July, 2009, should " production, teaching & research alliance " set up, joint research exploitation punched positive aluminum electrolyzation technology.December in the same year successfully develops punched positive product, and carries out the commerical test of nine months on company's three 168kA electrolyzers, obtains good result.On January 29th, 2011, carried out " punched positive engineering test assessment of result " by China YouSe metal association and organization expert, qualification result is thought " overall technology is reached the international leading level ".
From in April, 2011,30 171.5kA electrolyzers carry out industrial broadened application.On February 11st, 2012, by China YouSe metal, association organizes expert again, has carried out " punched positive electrolysis tech industry broadened application " appraisal of scientific and technological achievements.Qualification result is thought: " this technical electricity saving is remarkable, and economic benefit and social benefit obviously, are convenient to promote, and punched positive belongs to international pioneering, and general technical level is reached advanced world standards, and advises applying ".
At present, the patent about punched positive technology at least comprises following four:
Patent of invention title: anode with gas exhausting hole for aluminum electrolysis application number: 200810141325.6;
Patent of invention title: a kind of method application number making punched positive: 201010617877.7;
Utility model patent title: anode with gas exhausting hole for aluminum electrolysis application number: 200820149120.8;
Utility model patent title: punched positive electrode for aluminum electrolysis application number: 201020055459.9.
The advantage of punched positive technology:
Punched positive can make Anode Block inside increase and outside contact when roasting, the effusion of internal gas, fugitive constituent when being conducive to roasting, makes that the inside and outside temperature difference reduces, temperature is more balanced, reduces inside and outside thermal stresses;
The technology of this totally different expeling anodic gas in existing fluting anode of punched positive, effectively can drive away anodic gas, local gas is avoided to be detained, thus reach shortening pole span, reduce bath voltage, realize energy-saving and cost-reducing object, turn avoid existing fluting anode duration of service long, fall slag, structural damage defect because of the Bu Daer reactivity of atmospheric oxidation and carbonic acid gas.
The shortcoming of punched positive technology:
That anode bottom gas is directly discharged to anode upper surface from being communicated with bottom anode with the perforation on surface during existing punched positive technical project, but owing to being added with on electrolysis operational process Anodic surface >=impact of the thick aluminum oxide coating material layer of 16cm and electrolyte crust layer, therefore bore a hole when to pass surface bottom anode, for avoiding the blockings such as the capped bed of material of boring a hole, and additionally take with refractory materials tubing (as the alundum tube of aluminum oxide material, the tubing etc. of pure aluminium silicate material) or metal pipe material connect extraneous method, add refractory material consumption and labour intensity, and the operation of these implements to electrolyzer increased has no small negative impact.
Summary of the invention
The technical problem to be solved in the present invention is: provide a kind of punched positive carbon block, effectively can discharge reactant gases, reduce the pressure drop that its bottom surface air film causes, and anode block is easy to process, easy to implement simultaneously.
The technical solution used in the present invention is: a kind of punched positive carbon block, comprises the perforation of carbon block upper surface, carbon block side surface also has and bores a hole with the side direction communicated of boring a hole.Although principle is still bored a hole on anode, prior art is all the upper surfaces at carbon block, vertically (or having certain pitch angle) perforate, and anodic gas only has the outlet of top, is therefore subject to the impact of anode-covered material and crust.Invention increases the side direction perforation (such as two row's side direction perforation) on carbon block side surface, side direction perforation communicates with the perforation of vertical direction, so side direction perforation can be used as pore.So can avoid the deficiency of existing punched positive (adopting refractory materials tubing or metal pipe material to connect extraneous way) and directly use, additionally need not increase material and artificial loss.
The object of side surface perforation will solve single vertical direction (or with inclination angle) perforation to be vented inconvenience that is smooth or volume externally connected exhaust pipe, therefore the core of side direction perforation to ensure in whole electrolytic process, have enough passages that gas in carbon block is discharged, and not easily blocked.Therefore the quantity of side direction perforation, pore size, the path of perforation is straight hole or curved slot, is all will for being communicated with carbon block and external region service.Briefly, side direction perforation can be in the random distribution of side surface, two row, three row or even without stationary arrangement, and all apertures can be identical, also can be different, and perforation path both can be straight line, or even curve.
Side direction perforation is the combination of through hole, blind hole or through hole and blind hole.Bore a hole owing to only needing side direction and is communicated with the effect that can reach exhaust with perforation, so in order to reduce the time and cost that processing holes, while, is also considered and the utilization ratio of carbon block can adopt total blindness hole, the mode that all-pass hole or blind hole and through hole combine.
The cross section of side direction perforation is circular.The convenience reducing stress concentration and processing boring is mainly considered in circular cross section.
The diameter of side direction perforation is greater than, is equal to or less than the diameter of perforation.The size in aperture depends on that the size of free air delivery adds the complexity in man-hour with perforation.
Side direction perforation has two row, and its axis is all parallel to the upper surface of carbon block.The side direction perforated base distance carbon block lower surface distance that in two row side direction perforation, position occupies is 45cm, and the side direction perforated base distance carbon block lower surface distance under position occupies is 30cm.Above-mentioned two distances are based on the height of conventional anode block between 500 ~ 700mm, by calculate and actual observation gets.Two row side direction perforation are as pore, and the height from anode block lower surface is respectively 30cm with 45cm(and all refers to side direction perforated base distance lower surface distance here)---the same with the groove height of fluting anode.Because the height of pore directly determines the usable time of punched positive, so the height of side direction perforation is according to following factor design: consider that two row side direction perforation (pore) are after anode enters electrolyzer, at least 16cm will be flooded by ionogen in bottom, top will be capped material and electrolyte crust lid removes about 15cm, and the part that anode is exposed is this scope apart from upper and lower surperficial 16 ~ 26cm.Along with the consumption (every daily consumption height representative value is 1.5cm) of anode, anode height will constantly decline, therefore the side direction perforation that the position of distance lower surface height 45cm occupies may be capped material at the beginning and electrolyte crust covers, but drop to after under position occupies, the side direction perforation of (distance lower surface 30cm) contacts with ionogen at anode consumption, this arranges high-order side direction and bores a hole just can connect and play a role.
Side direction perforation is in prior art, i.e. improvement on the basis of antianode perforation in vertical direction.And antianode perforation increases core pin when anode is shaping by transformation upper holder block to make raw block straight forming in vertical direction.
Side direction perforation can not adopt similar method, but its perforation can utilize mechanical drill only for punching, because horizontal section (being namely parallel to the cross section of lower surface or the upper surface) typical sizes of anode block is 1500mm × 660mm, consideration can from shorter direction, and namely this implements to want difficulty relatively low 660mm.Process period both can give birth to formation of lots post-treatment, and can ripe piece after baking be processed again, then enter assembling with the same before, operation the same with existing anode block after upper groove uses, and need not increase the special operations such as such as through hole in addition.
During anode block perforation, once being directly utilize in mechanical drill vertical direction and side direction to punch on the raw block of forming; Two is directly on roasting ripe piece, utilize mechanical drill just vertical direction and side direction to be punched; Because the raw block of carbon materials and the hardness of ripe piece, intensity are all not high, the method for employing machine drilling is desirable, and drill bit can be special, and length is applicable to processing.Drilling operation work is uncomplicated, needs place little, can not have side effect to existing explained hereafter.
With reference to the input of fluting anode project, because capital cost is part transformation on mould and the mechanical means such as drilling machine, drill bit and the recovery of tailing dust, do not have the electrical control equipment what is high-grade, precision and advanced, this enforcement total expenses can be controlled within 1,000,000 yuan.
The voltage that the air film layer that on electrolyzer, this 1.5 ~ 2.0cm is thick causes reduces to about 250mv, side direction perforation coordinates original punched positive to use, even if by minimizing half, reduce this lower numerical limit of voltage 100mv, the ton aluminum direct current consumes also can reduce more than 300kWh, by electricity price 0.60 yuan/kWh, is equivalent to ton aluminium and reduces the electricity charge 180 yuan, its economic benefit is considerable, and enforcement of the present invention does not have large technological difficulties, is easy to industrialization, project risk of input is low.
Accompanying drawing explanation
Fig. 1 is that upper surface and side surface are all with the structural representation of the anode block of perforation;
Fig. 2 is for having the anode block schematic cross-section of perforation (blind hole) and two row side direction perforation (blind hole);
Fig. 3 is for having the anode block schematic cross-section of perforation (blind hole) and two row side direction perforation (through hole);
Fig. 4 is for having the anode block schematic cross-section of perforation (blind hole) and two row side direction perforation (blind hole and a through hole);
Fig. 5 is for having perforation (through hole) and two row side direction perforation (blind hole) and side direction penetration hole diameter is greater than the anode block schematic cross-section of penetration hole diameter;
Fig. 6 for having perforation (through hole), and two side surfaces all have two row side direction perforation (through hole) and anode block schematic cross-section;
Fig. 7 is for having perforation (through hole) and two row side direction perforation (blind hole) and side direction penetration hole diameter equals the anode block schematic cross-section of penetration hole diameter;
Fig. 8 be depict simultaneously carbon bowl, perforation and side direction perforation carbon block schematic diagram.
Embodiment
As shown in Figure 1, the upper surface of anode block 1 and side surface there are perforation 2 and side direction perforation 3 respectively.As shown in Figure 8, in order to avoid perforation 2 and the carbon bowl 4(of carbon block 1 upper surface are generally 2 to 4) obscure, specially distinguish the two with Fig. 8, perforation 2 had both likely directly passed the upper surface of carbon block 1, in carbon bowl 4, also likely pass the bottom surface of carbon bowl 4.
Embodiment 1
As shown in Figure 2, a kind of punched positive carbon block, comprise the perforation 2 of carbon block 1 upper surface, on carbon block 1 side surface (that side surface that namely carbon block four side surface middle distances are shorter) also have two row and 2 side direction of rounded sections communicated of boring a hole bore a hole 3, two row side direction bore a hole 3 axis be all parallel to the upper surface of carbon block 1.Two row side direction perforation 3 are blind hole, and the diameter of side direction perforation 3 is less than the diameter of perforation 2.
Embodiment 2
As shown in Figure 3, a kind of punched positive carbon block, comprise the perforation 2 of carbon block 1 upper surface, on carbon block 1 side surface (that side surface that namely in carbon block four side surfaces, spacing is shorter) also have two row and 2 side direction of rounded sections communicated of boring a hole bore a hole 3, two row side direction bore a hole 3 axis be all parallel to the upper surface of carbon block 1.Two row side direction perforation 3 are through hole, and the diameter of side direction perforation 3 is less than the diameter of perforation 2.
Embodiment 3
As shown in Figure 4, a kind of punched positive carbon block, be of a size of long 1500mm, wide 660mm, high 570mm, comprise the perforation 2 of carbon block 1 upper surface, on carbon block 1 side surface (that side surface that namely in carbon block four side surfaces, spacing is shorter) also have two row and 2 side direction of rounded sections communicated of boring a hole bore a hole 3, two row side direction bore a hole 3 axis be all parallel to the upper surface of carbon block 1.The diameter of two row side direction perforation 3 is less than the diameter of perforation 2.The side direction perforation 3 that in two row side direction perforation 3, position occupies is through hole, and its width between centers carbon block 1 lower surface distance is 45cm, and the side direction perforation 3 under position occupies is blind hole, and its width between centers carbon block 1 lower surface distance is 30cm.
Embodiment 4
As shown in Figure 5, a kind of punched positive carbon block, be of a size of long 1500mm, wide 660mm, high 700mm, comprise the perforation 2 of carbon block 1 upper surface, on carbon block 1 side surface (that side surface that namely in carbon block four side surfaces, spacing is shorter) also have two row and 2 side direction of rounded sections communicated of boring a hole bore a hole 3, two row side direction bore a hole 3 axis be all parallel to the upper surface of carbon block 1.Two row side direction perforation 3 are blind hole, and the diameter of side direction perforation 3 is greater than the diameter of perforation 2.The side direction that in two row side direction perforation 3, position occupies bores a hole 3 width between centers carbon block 1 lower surfaces distances for 45cm, and it is 30cm that position occupies lower side direction 3 width between centers carbon block 1 lower surfaces distances of boring a hole.
Embodiment 5
As shown in Figure 6, a kind of punched positive carbon block, be of a size of long 1500mm, wide 660mm, high 500mm, comprise the perforation 2 of carbon block 1 upper surface, on carbon block 1 side surface (two adjacent side namely in carbon block four side surfaces) also have two row and 2 side direction of rounded sections communicated of boring a hole bore a hole 3, two row side direction bore a hole 3 axis be all parallel to the upper surface of carbon block 1.Two row side direction perforation 3 are through hole, and the diameter of side direction perforation 3 on the less side surface of spacing is greater than the diameter of perforation 2, and the diameter of the side direction perforation 3 on the side surface that spacing is larger is less than the diameter of perforation 2.The side direction that in two row side direction perforation 3, position occupies bores a hole 3 width between centers carbon block 1 lower surfaces distances for 45cm, and it is 30cm that position occupies lower side direction 3 width between centers carbon block 1 lower surfaces distances of boring a hole.
Embodiment 6
As shown in Figure 7, a kind of punched positive carbon block, be of a size of long 1500mm, wide 660mm, high 600mm, comprise the perforation 2 of carbon block 1 upper surface, on carbon block 1 side surface (that side surface that namely carbon block four side surface middle distances are shorter) also have two row and 2 side direction of rounded sections communicated of boring a hole bore a hole 3, two row side direction bore a hole 3 axis be all parallel to the upper surface of carbon block 1.Two row side direction perforation 3 are blind hole, and the diameter of side direction perforation 3 equals the diameter of perforation 2.The side direction that in two row side direction perforation 3, position occupies bores a hole 3 width between centers carbon block 1 lower surfaces distances for 45cm, and it is 30cm that position occupies lower side direction 3 width between centers carbon block 1 lower surfaces distances of boring a hole.
Claims (6)
1. a punched positive carbon block, comprises the perforation (2) of carbon block (1) upper surface, it is characterized in that: carbon block (1) side surface also has the side direction communicated with perforation (2) bore a hole (3).
2. a kind of punched positive carbon block according to claim 1, is characterized in that: side direction perforation (3) is through hole, the combination of blind hole or through hole and blind hole.
3. a kind of punched positive carbon block according to claim 2, is characterized in that: the cross section of side direction perforation (3) is for circular.
4. a kind of punched positive carbon block according to claim 3, is characterized in that: the diameter of side direction perforation (3) is greater than, is equal to or less than the diameter of perforation (2).
5. a kind of punched positive carbon block according to claim 1, is characterized in that: side direction perforation (3) has two row, and its axis is all parallel to the upper surface of carbon block (1).
6. a kind of punched positive carbon block according to claim 5, it is characterized in that: side direction perforation (3) width between centers carbon block (1) lower surface distance that in two row side direction perforation (3), position occupies is 45cm, side direction perforation (3) width between centers carbon block (1) lower surface distance under position occupies is 30cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310657525.8A CN104694962A (en) | 2013-12-09 | 2013-12-09 | Perforated anode carbon block |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310657525.8A CN104694962A (en) | 2013-12-09 | 2013-12-09 | Perforated anode carbon block |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104694962A true CN104694962A (en) | 2015-06-10 |
Family
ID=53342495
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310657525.8A Pending CN104694962A (en) | 2013-12-09 | 2013-12-09 | Perforated anode carbon block |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104694962A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201250286Y (en) * | 2008-09-10 | 2009-06-03 | 秦晓明 | Anode with exhaust vent for aluminum electrolysis |
| CN202530176U (en) * | 2012-04-09 | 2012-11-14 | 山东魏桥铝电有限公司 | Laterally pored anode for aluminum |
| CN102943285A (en) * | 2012-12-04 | 2013-02-27 | 长沙蔡风节能科技有限公司 | Lateral gas guide anode structure for aluminum electrolysis |
-
2013
- 2013-12-09 CN CN201310657525.8A patent/CN104694962A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201250286Y (en) * | 2008-09-10 | 2009-06-03 | 秦晓明 | Anode with exhaust vent for aluminum electrolysis |
| CN202530176U (en) * | 2012-04-09 | 2012-11-14 | 山东魏桥铝电有限公司 | Laterally pored anode for aluminum |
| CN102943285A (en) * | 2012-12-04 | 2013-02-27 | 长沙蔡风节能科技有限公司 | Lateral gas guide anode structure for aluminum electrolysis |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN211972465U (en) | Water electrolysis bath polar plate | |
| CN103600144A (en) | Method and device for electrolytic machining of massive array tiny pits through wedge-shaped runner | |
| CN101851765B (en) | Energy saving and environmental protection aluminium cell with self-baking anode | |
| CN202989301U (en) | Prebaked anode carbon block internally with two rows of exhaust holes and exhaust grooves | |
| CN102719854B (en) | Alumina blanking system of aluminum reduction cell | |
| CN104694962A (en) | Perforated anode carbon block | |
| CN201525894U (en) | Combined type multi-cathode and multi-anode graphite electrolytic tank | |
| CN203174211U (en) | Ore pulp electro-deposition tank | |
| CN210559551U (en) | Three-dimensional electrolytic reaction device | |
| CN201924084U (en) | Aluminum electrolysis cell cathode provided with longitudinal partition wall | |
| CN202465897U (en) | Alumina electrolysis bath device | |
| CN205856631U (en) | A kind of cell construction | |
| CN106048638B (en) | A kind of method of the molten metallic nickel liquid making of small cathode deposition period reverse current electricity | |
| CN202170368U (en) | Multiple-hole prebaked anode | |
| CN201354387Y (en) | Aluminum electrolysis bath novel inclined groove type cathode block structure | |
| CN201713581U (en) | Energy-saving environment-friendly self-baking anode aluminum electrolytic cell | |
| CN202465912U (en) | Multistage ore pulp decomposition electro-deposition cell | |
| CN201268725Y (en) | Pre-baked anode carbon block with diversion trench | |
| CN203474915U (en) | Unsymmetrical prebaked anode charcoal block | |
| CN201354386Y (en) | Aluminum electrolysis bath energy-saving cathode block structure | |
| CN205616960U (en) | Aluminium - carbon - aluminium cathode of aluminium cell | |
| CN205710959U (en) | A kind of continuous prebaked anode cell carry hanging component | |
| CN200955069Y (en) | Magnesium-guide-tank type magnesium electrolytic tank | |
| CN212560463U (en) | Electrolytic anode exhaust structure | |
| CN203653713U (en) | Magnesium electrolysis bath without partition plates |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150610 |