CN201049966Y - Abnormal structure cathode carbon block of aluminum electrolysis bath - Google Patents
Abnormal structure cathode carbon block of aluminum electrolysis bath Download PDFInfo
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- CN201049966Y CN201049966Y CNU200720012231XU CN200720012231U CN201049966Y CN 201049966 Y CN201049966 Y CN 201049966Y CN U200720012231X U CNU200720012231X U CN U200720012231XU CN 200720012231 U CN200720012231 U CN 200720012231U CN 201049966 Y CN201049966 Y CN 201049966Y
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Abstract
Disclosed is a cathode block of a specially-shaped aluminum cell, belonging to the aluminum electroanalysis technical field. The specially-shaped aluminum cell refers that the cathode structure of the aluminum cell is special. The lower surface of the cathode block in the utility model is provided with a groove for installing a cathode steel bar in, the upper surface of the cathode block is provided with a plurality of projections, the transect of the cathode block is a convexity or rectangle. After the adoption of the aluminum cell of the utility model, the flow velocity and the fluctuation height of the cathode liquid aluminum in the aluminum cell can be reduced, thereby the stability of the aluminum liquid level in the aluminum cell is improved, the aluminum solution loss is reduced, the current efficiency is improved, the polar distance is reduced and the electric energy consumption for aluminum electroanalysis production is reduced; in addition, the mixture or deposit of glutinous cryolite fused mass alumina can be formed between the protruding walls at the cathode bottom, preventing the cathode liquid aluminum from flowing into the cell bottom along the cracks and the seams on the cell bottom to melt the steel bar, therefore the purpose of extending the service life of the aluminum cell is achieved.
Description
Technical field
The utility model belongs to technical field of aluminum electrolysis, particularly a kind of cathode block of polymorphic structure aluminium cell.
Background technology
Aluminium Electrolysis is to carry out under 960 ℃ of left and right sides environment, has in the electrolyzer of cryolite melts of aluminum oxide, with electrolytic method production in fusion.The carbon cathode that is used for electrolyzer is the cathode block assembling of rod iron to be installed and to be built by laying bricks or stones by a plurality of bottoms to form.General used cathode block is a rectangular parallelepiped, a groove is processed in the bottom of cathode block, then the cathode steel bar of rectangular cross-section is put into wherein, and smash into the plain paste of charcoal in the slit between rod iron and cathode block then, or, cathode steel bar and cathode block are connected together with the molten casting iron casting.Because it is flat that the upper surface of cathode steel bar is installed, cathode steel bar is installed in the bottom surface of cathode block, and after therefore many group cathode blocks were installed in the electrolyzer, electrolytic bath thorax basal surface was flat.Make bonding firm by ramming with plain paste of charcoal between cathode block and the cathode block.Groove thorax side lining is also built by laying bricks or stones with carbon brick, also builds by laying bricks or stones with the silicon carbide brick of silicon nitride bonded silicon sometimes.In the electrolytic process, the bottom of groove thorax is an aluminium water, and the fused ionogen is arranged at the top of aluminium water, and the top carbon anode inserts in the electrolyte melt.Owing to be subjected to the anodic gas of anode basal surface effusion and the influence in the magnetic field that the inside and outside electrical conductor electric current of electrolyzer produces, aluminium liquid instability in the electrolyzer, has very big fluctuation, the reduction of this instability and influence of fluctuations electrolyzer pole span exerts an influence to the power consumption and the current efficiency of electrolysis of aluminum.
The utility model content
In order to solve the problem of above-mentioned existence, the utility model provides a kind of cathode block of polymorphic structure aluminium cell.Described polymorphic structure aluminium cell is meant that its cathode construction of this aluminium cell is abnormity.
The lower surface of the utility model cathode block has groove, is used to install cathode steel bar, and its upper surface has some projectioies, and its transverse section is convex or is rectangle.These some projectioies are positioned at the corresponding to centre of longitudinal length direction or the one or both sides of cathode block upper surface and carbon piece, and bossing is continuously or is interrupted that each cathode block projection is 1～8.Hill height is 50～200mm, and width is 200～350mm.
Use the electrolyzer that the utility model cathode block is built into, many vertically standing in the projection on bottom land surface of paralleling with the potline current direction that have have been formed on its groove thorax bottom, and this body of wall is the integral part of cathode carbon block of electrolytic bath.
The material of this cathode block is identical with the cathode block of existing aluminium cell, be that it can be the carbon piece of calcined anthracite, it also can be the cathode block of graphite matter, also can be the cathode block that two kinds of materials of calcined anthracite and graphite constitute, can also be graphited and cathode block semi-graphited.Its density is at 1.4～1.7g/cm
2Between, resistivity is between 8～65 Ω m.
The beneficial effects of the utility model: adopt the aluminium cell of this cathode block can slow down the velocity of flow of electrolyzer inner cathode aluminium liquid and the fluctuation height of reduction aluminium liquid, thereby reach the stability of the metallic aluminium liquid level that improves aluminium cell, reduce the solution loss of aluminium, improve current efficiency and reduce pole span, reduce the Aluminium Electrolysis power consumption, and the mixture or the throw out that between the body of wall of cathode bottom projection, can form thickness cryolite melts aluminum oxide, stop negative electrode aluminium liquid to flow into bottom land by bottom land crackle and slit, the fusing rod iron reaches the purpose that prolongs bath life.
Description of drawings
Fig. 1 has a projection on the upper surface of each cathode block of the utility model, and the bossing section form is the structural representation of convex,
Fig. 2 is the side-view of Fig. 1,
Fig. 3 has two projectioies on the upper surface of each cathode block of the utility model, and the bossing section form is the structural representation of convex,
Fig. 4 is the A-A sectional view of Fig. 3,
Fig. 5 has 8 projectioies on the upper surface of each cathode block of the utility model, and the bossing section form is the orthogonal structural representation,
Fig. 6 is the B-B sectional view of Fig. 5,
Fig. 7 has 5 projectioies on the upper surface of each cathode block of the utility model, the vertical vertical transverse section of cathode block this moment, and the bossing section form is the orthogonal structural representation,
Fig. 8 is the side-view of Fig. 7;
1 is the lobed cathode block of upper surface among the figure, and 2 is the lower surface of cathode block, and 3 for protruding from the projection of cathode block upper surface, 4. groove.
Embodiment
Below in conjunction with accompanying drawing the utility model is described further:
Embodiment 1: as shown in Figure 1 and Figure 2, lower surface of the present utility model has groove 4, is used to install cathode steel bar, and upper surface has 1 projection, and this protruding transverse section is a convex.This projection is positioned at the corresponding to centre of longitudinal length direction of cathode block upper surface and carbon piece, and the height of projection is 100mm, and width is 300mm.
This routine cathode block is an aggregate with calcined anthracite and rubble China ink, with pitch is binding agent, the making method of aluminium electrolysis cell cathode carbon block that its upper surface has protruding body of wall is as follows: with aggregate in proportion with the bituminous mixture under the temperature about 200 ℃, after mixed pinching, put into vibrating forming machine, its lower surface is put on top has the iron weight that falls in to carry out vibratory compaction, and the spatial section form that falls in is consistent with the section form and the size of the body of wall of preformed cathode block upper surface projection with size.Vibratory compaction is come out is the lobed green compact of upper surface, and green compact are after 1100～1300 ℃ high-temperature roasting, and promptly getting upper surface has projection, and its transverse section is the cathode block of convex.
Embodiment 2: as shown in Figure 3, Figure 4, lower surface of the present utility model has groove 4, is used to install cathode steel bar, and upper surface has 2 projectioies, and this protruding transverse section is a convex.2 corresponding to sides of longitudinal length direction that projection lays respectively at cathode block upper surface and carbon piece, the height of projection is 200mm, width is 350mm.
This routine cathode block is an aggregate with after-smithing petroleum coke and calcined anthracite, with pitch is binding agent, when matrix is greying or semi-graphited, earlier with refinery coke aggregate after the varigrained calcining and bituminous mixture, or the mixture of the mixture of after-smithing petroleum coke and calcined anthracite and binder pitch in kneading machine, fully mix pinch after, put into the vibrating forming machine mould, then its lower surface is had the iron weight that falls in to be pressed in above the material in the mould; Or a little after the vibration, again its lower surface there is the iron weight that falls in to be pressed in above the material in the mould.After vibratory compaction finishes, mention weight, carry out the demoulding, make the green compact that its upper surface has the aluminium electrolysis cell cathode carbon block of protruding body of wall.After the green compact cooling, insert in ring type roasting kiln or the other forms of roasting kiln and carry out roasting, make the roasting product of the lobed aluminium electrolysis cell cathode carbon block of its upper surface, this roasting product is inserted in the graphitizing furnace.According to the difference of graphitization temperature, make semi-graphited or greying goods that its upper surface has protruding body of wall.
Embodiment 3: as Fig. 5, shown in Figure 6, below of the present utility model has groove, is used to install cathode steel bar, and upper surface has 8 projectioies, and this protruding transverse section is the cylinder of convex.8 projectioies lay respectively at the corresponding to both sides of longitudinal length direction of cathode block upper surface and carbon piece, and the height of projection is 50mm, and width is 200mm.
This routine cathode block is an aggregate with hard coal or graphite matter, or when being the mixture of the two, with above-mentioned raw materials through varigrained aggregate and bituminous mixture after the calcining in kneading machine after fully mixed the pinching, put into existing vibrating forming machine, placing lower surface then in the above is planar rectangular parallelepiped weight, or after vibrating a little, putting down the surface again has the iron weight that falls in, and carries out vibratory compaction.Depanning does not have the rectangular parallelepiped cathode block green compact of protruding body of wall for upper surface from vibrating forming machine, insert in circular furnace or other pattern stoving oven after the green compact cooling and carry out roasting, be about to the roasting product of above-mentioned rectangular parallelepiped cathode block, this roasting product is placed on the lathe, carry out machining, make its upper surface along the lobed aluminium electrolysis cell cathode carbon block of its longitudinal direction.
Embodiment 4: as Fig. 7, shown in Figure 8, lower surface of the present utility model has groove, is used to install cathode steel bar, and upper surface has 5 projectioies, and the transverse section of projection is a convex.5 projectioies lay respectively at the corresponding to centre of longitudinal length direction and the both sides of cathode block upper surface and carbon piece, and the height of projection is 120mm, and width is 250mm.
This routine cathode block is an aggregate with after-smithing petroleum coke, calcined anthracite mixture, use coal-tar pitch to be binding agent, when body material is graphite or semi-graphited, with above-mentioned raw materials through varigrained aggregate and bituminous mixture after the calcining in kneading machine after fully mixed the pinching, put into existing vibrating forming machine, putting down its lower surface then in the above is planar rectangular parallelepiped weight, or after vibrating a little, putting down the surface again has the iron weight that falls in, and carries out vibratory compaction.From vibrating forming machine depanning for upper surface does not have the rectangular parallelepiped cathode block green compact of projection, insert after the green compact coolings and carry out greying in the graphitizing furnace, according to the difference of graphitization temperature, promptly get the greying goods of the cathode block of rectangular parallelepiped.The semi-graphited of rectangular parallelepiped cathode block or greying goods are placed on carry out machining on the lathe, make its upper surface of the present utility model for along the lobed aluminium electrolysis cell cathode carbon block of its longitudinal direction.
Claims (3)
1. the cathode block of a polymorphic structure aluminium cell is characterized in that the surface has some projectioies thereon, and this protruding transverse section is convex or is rectangle.
2. the cathode block of a kind of polymorphic structure aluminium cell as claimed in claim 1, it is characterized in that described some projectioies are positioned at the corresponding to centre of longitudinal length direction or the one or both sides of cathode block upper surface and carbon piece, bossing is continuously or is interrupted that each cathode block projection is 1～8.
3. the cathode block of a kind of polymorphic structure aluminium cell as claimed in claim 1 is characterized in that described hill height is 50～200mm, and width is 200～350mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200720012231XU CN201049966Y (en) | 2007-05-23 | 2007-05-23 | Abnormal structure cathode carbon block of aluminum electrolysis bath |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200720012231XU CN201049966Y (en) | 2007-05-23 | 2007-05-23 | Abnormal structure cathode carbon block of aluminum electrolysis bath |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201049966Y true CN201049966Y (en) | 2008-04-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200720012231XU Expired - Fee Related CN201049966Y (en) | 2007-05-23 | 2007-05-23 | Abnormal structure cathode carbon block of aluminum electrolysis bath |
Country Status (1)
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| CN (1) | CN201049966Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101818363A (en) * | 2009-01-21 | 2010-09-01 | 贵阳铝镁设计研究院 | Energy-saving cathode for aluminum electrolytic bath |
| CN101851764B (en) * | 2009-04-01 | 2011-07-20 | 中国铝业股份有限公司 | Method for manufacturing abnormally shaped cathode carbon block of aluminum cell |
| CN102766884A (en) * | 2012-07-10 | 2012-11-07 | 沈阳北冶冶金科技有限公司 | Aluminum cell cathode carbon block with cylindrical grooves on upper surface and manufacturing method of aluminum cell cathode carbon block |
| CN103154325A (en) * | 2010-09-20 | 2013-06-12 | 西格里碳素欧洲公司 | Electrolysis cell for extracting aluminum |
| CN101649470B (en) * | 2008-08-12 | 2013-09-11 | 高德金 | Cathode lining with aluminum liquid magnetic rotational flow adjusting device |
| CN103958739A (en) * | 2011-11-09 | 2014-07-30 | 西格里碳素欧洲公司 | Electrolytic cell, in particular for producing aluminum, having a tub-shaped cathode |
-
2007
- 2007-05-23 CN CNU200720012231XU patent/CN201049966Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101649470B (en) * | 2008-08-12 | 2013-09-11 | 高德金 | Cathode lining with aluminum liquid magnetic rotational flow adjusting device |
| CN101818363A (en) * | 2009-01-21 | 2010-09-01 | 贵阳铝镁设计研究院 | Energy-saving cathode for aluminum electrolytic bath |
| CN101851764B (en) * | 2009-04-01 | 2011-07-20 | 中国铝业股份有限公司 | Method for manufacturing abnormally shaped cathode carbon block of aluminum cell |
| CN103154325A (en) * | 2010-09-20 | 2013-06-12 | 西格里碳素欧洲公司 | Electrolysis cell for extracting aluminum |
| CN103958739A (en) * | 2011-11-09 | 2014-07-30 | 西格里碳素欧洲公司 | Electrolytic cell, in particular for producing aluminum, having a tub-shaped cathode |
| CN102766884A (en) * | 2012-07-10 | 2012-11-07 | 沈阳北冶冶金科技有限公司 | Aluminum cell cathode carbon block with cylindrical grooves on upper surface and manufacturing method of aluminum cell cathode carbon block |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080423 Termination date: 20130523 |