CN105648474A - Energy-saved flow stabilization construction method of large prebaked tank - Google Patents
Energy-saved flow stabilization construction method of large prebaked tank Download PDFInfo
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- CN105648474A CN105648474A CN201610135337.2A CN201610135337A CN105648474A CN 105648474 A CN105648474 A CN 105648474A CN 201610135337 A CN201610135337 A CN 201610135337A CN 105648474 A CN105648474 A CN 105648474A
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- 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
Abstract
The invention discloses an energy-saved flow stabilization construction method of a large prebaked tank. The method comprises assembly of a cathode superconductivity flow stabilization steel rod and a cathode carbon block, and building of an electrolytic cell lining material; a center line of the cathode superconductivity flow stabilization steel rod is matched with a center line of a dovetail groove of the cathode carbon block; the deviation of total length of the cathode superconductivity flow stabilization steel rod after assembly is 3810+-5 mm; and the electrolytic cell lining structure includes the following parts from the surface of a baseplate in sequence: a calcium silicate board, vermiculite thermal insulation bricks, a novel superstrong insulation impermeable thermal insolating layer, two layers of vermiculite thermal insulation impermeable bricks, installation of an assembled cathode carbon block set, vibration of impermeable castable between two ends and the steel rod, building of refractory bricks, building of side blocks and final actuation of carbon-carbon pasting and surrounding pasting fixation. The method prominently improves the whole furnace casting process level of an electrolytic cell, obviously reduces the furnace bottom pressure drop, prominently improves the electric conductivity, obviously enhances the insulation performance of the furnace bottom and the side part of the electrolytic cell, is excellent in whole insulation effect of the electrolytic cell, obviously reduces the direct-current working voltage, and obviously improves the comprehensive alternating-current power consumption index.
Description
Technical field:
The present invention relates to a kind of large-scale pre-baked cell current stabilization saving construction method, belong to cell lining furnace construction engineering technical field.
Background technology:
In electrolysis bath normal productive process, it is necessary to negative electrode has good electric conductivity, furnace bottom and sidepiece to have stronger heat-insulating property. Conventional furnace building material and the management of furnace building process indices are rigorous not, particularly that the supervision of the prescription of main material and keypoint part work progress is fine not, it is impossible to ensure that whole process supervision is up to standard, the production of electrolysis bath is caused certain heat waste and impact, cause the bad control of energy consumption index, integral production bad economic results.
Summary of the invention:
The technical problem to be solved is: overcome the deficiencies in the prior art, it is provided that a kind of large-scale pre-baked cell current stabilization saving construction method.
The present invention solves that technical problem be the technical scheme is that
A kind of large-scale pre-baked cell current stabilization saving construction method, including negative electrode superconduction current stabilization rod iron and the assembling of cathode carbon pieces and building by laying bricks or stones of cell lining materials, its concrete construction method is as follows:
(1) assembling of negative electrode superconduction current stabilization rod iron and cathode carbon pieces:
1. negative electrode adopts 50% graphite carbon block, is of a size of long 3450 �� 5mm �� wide 610 �� 3mm �� high 450 �� 4mm, and dovetail groove is of a size of long 3450 �� 5mm �� wide 170 �� 2mm �� high 200 �� 2mm;
2. negative electrode superconduction current stabilization rod iron is low-resistance high connductivity rod iron, it is of a size of long 1815 �� 2mm �� high 180 �� 2mm �� wide 130 �� 2mm, total length bending, distortion are not more than 3mm, and distance negative electrode superconduction current stabilization rod iron bared end 60mm place is coated with coating, are coated with the super lower placement in slice width face;
3. the assembling of negative electrode superconduction current stabilization rod iron and cathode carbon pieces adopts cold ramming paste method, and when pricking solid, thickener temperature controls within the scope of 60 �� 10 DEG C, and the preheating temperature of cathode carbon pieces and negative electrode superconduction current stabilization rod iron all controls within the scope of 70 �� 10 DEG C;
4. tamping tool house steward blast is not less than 0.6Mpa, and isocon blast is not less than 0.55Mpa;
5. pricking solid compression ratio in work progress and control at 1.57��1.62:1, thickener pricks solid 5��7 layers, every layer prick solid 2 back and forth;
6. the centrage of negative electrode superconduction current stabilization rod iron matches with carbon block dovetail groove centrage, and deviation is not more than 3mm; Gap �� 16mm after negative electrode superconduction current stabilization rod iron is put well and between carbon block dovetail groove vertical seam hammer carries out pricking admittedly, negative electrode superconduction current stabilization rod iron total length deviation 3810mm �� 5mm after assembling;
(2) the building by laying bricks or stones of cell lining materials:
1. build by laying bricks or stones at the bottom of front discharge channel and the longitudinal and transverse centrage of cell wall, demarcate pot shell level point or line, utilize horizontal line determine datum mark and rule, on cell wall, mark the Altitude control line building each layer by laying bricks or stones according to datum mark;
2. cell lining structure is upwards followed successively by by backplate surface: 100mm thickness calcium silicate board, one layer of 65mm thickness vermiculite heat-insulating insulating brick, on vermiculite heat-insulating insulating brick upper berth 107mm thick novel Superstrong heat-preserving antiseepage thermal insulation layer, antiseepage thermal insulation layer wet build two-layer vermiculite heat-insulating antiseepage brick, antiseepage castable of vibrating between the carbon cathode blocks, two ends and the rod iron that assemble is installed, build refractory brick, build side block, finally carry out sticking with paste between carbon, around stick with paste prick solid;
3. 100mm thickness calcium silicate board is laid: lay after base plate scraggly place aluminium oxide is levelling; By the datum line put well in advance, build by laying bricks or stones from groove center to two ends simultaneously; The long skew back slope masonry processing 100mm thickness calcium silicate board of pot shell two, the ceramic beaverboard of pot shell one layer of �� 20mm of laid on end from inside to outside and the calcium silicate board of one layer of �� 60mm are leaned in two short sides; Calcium silicate board requires laid dry, lays straight, and the fissure of displacement is built by laying bricks or stones, and the seam of calcium silicate board, less than 2mm, is filled up with alumina powder between all gaps;
4. 65mm thickness vermiculite heat-insulating insulating brick: build brickwork joint by laying bricks or stones less than 2mm, and fill up with alumina powder, is forbidden there is space; Insulating brick processed and applied knife saw or brick cutting machine cut, and insulating brick requires after building by laying bricks or stones that surface smoothness is in the tolerance of 2 ��;
5. the thick novel Superstrong heat-preserving antiseepage thermal insulation layer of 107mm: determine the heap reality thickness of the heat insulation material of antiseepage in bulk with mark post location, its compression ratio is 1.215:1, levelling with scraper plate, three-ply board or iron sheet being overlapped is layered on the face of vibrating, crossheading surrounding is counterclockwise vibrated 6��8 times, its tap density 1.65Kg/m3;
6. two-layer vermiculite heat-insulating antiseepage brick masonry: every layer is 132mm thickness, adopts the wet block of the fissure of displacement, builds vertical seam by laying bricks or stones less than or equal to 2mm, and sleeping seam is less than or equal to 3mm, and brick break joint mud plumpness reaches more than 95%, and surface smoothness is in the tolerance of 2 ��;
The construction of 7. antiseepage castable: pot shell inwall surrounding is close to one layer of 20mm ceramic beaverboard, big h=421 �� 3mm of groove, groove end face h=721 �� 3mm; It is close to one layer of �� 60mm calcium silicate board of laying, big h=336 �� 3mm of groove, groove end face h=636 �� 3mm outside ceramic beaverboard; Big of groove is often organized cathode block break joint correspondence position and is close to that calcium silicate board is edge-on puts two blocks of vermiculite heat-insulating insulating bricks, height 230 �� 3mm, width 114 �� 3mm; Groove end face is close to the upright one layer of vermiculite heat-insulating insulating brick of calcium silicate board and edge-on one layer of vermiculite heat-insulating insulating brick, height 230 �� 3mm, width 180 �� 5mm;
8. castable is vibrated Altitude control: near pot shell end 315 �� 05mm, from cathode end 230 �� 05mm; Build the eyebrow brick place wide 150 �� 5mm of castable platform by laying bricks or stones; Surrounding all uses high-strength Impervious Materials, high-strength castable to vibrate the body natural curing phase: maintenance in summer 48 hours, Maintenance in Winter 72 hours;
9. 70mm thick silicon nitride silicon carbide lateral mass is built by laying bricks or stones: side block adopts laid dry, and vertical seam is less than 0.3mm; Regional area is wet to be built, and vertical seam is less than 0.5mm, and sleeping seam, less than 3mm, leads the difference of side wall carbon block faulting of slab ends height to be not more than 5mm mutually; Put the ceramic beaverboard of one layer of �� 20mm, h=620mm between groove side surface side block and pot shell, strengthen end insulation; Filling �� 30mm ceramic beaverboard between corner block and pot shell, gap alumina powder tamps; Hammering into shape with wooden mallet or glue and crowbar adjusts side block, lateral mass dorsal suture alumina powder is filled and is consolidated;
10. thickener is pricked solid: vertical seam eight layers, around seam five layers are pricked solid, carbon paste material prick solid before wants coal powder injection tar, be divided into 7 layers and prick solid, every layer prick admittedly three back and forth, last layer does not stay charcoal cap, flattens with plane set-hammer; Pricking and stick with paste slope higher than cathode carbon pieces surface 300 �� 5mm, the gradient is 135 degree, flat seizing 40 �� 5mm on slope, flat seizing 20 �� 5mm under slope, and the end sticks with paste to cover and is pressed in cathode carbon pieces upper surface.
The present invention actively provides the benefit that: built by laying bricks or stones the application of new technique by the assembling of electric tank cathode high connductivity current stabilization rod iron and cathode carbon pieces and cell lining materials, significantly improve the overall furnace building process management level of electrolysis bath, during electric tank working, hearth and bottom substantially reduces, electric conductivity significantly improves, make electrolysis bath furnace bottom and sidepiece heat-insulating property substantially be strengthened simultaneously, electrolysis bath integral heat insulation is respond well, direct-current working volts relatively regular troughs reduces by 200��300mV, and Integrated Exchange indicator of power consumption is clearly better.
Specific implementation method:
Below in conjunction with specific embodiment, the present invention is made further explanation and description:
A kind of large-scale pre-baked cell current stabilization saving construction method, including negative electrode superconduction current stabilization rod iron and the assembling of cathode carbon pieces and building by laying bricks or stones of cell lining materials, its concrete construction method is as follows:
(1) assembling of negative electrode superconduction current stabilization rod iron and cathode carbon pieces:
1. negative electrode adopts 50% graphite carbon block, is of a size of long 3450 �� 5mm �� wide 610 �� 3mm �� high 450 �� 4mm, and dovetail groove is of a size of long 3450 �� 5mm �� wide 170 �� 2mm �� high 200 �� 2mm;
2. negative electrode superconduction current stabilization rod iron is low-resistance high connductivity rod iron, it is of a size of long 1815 �� 2mm �� high 180 �� 2mm �� wide 130 �� 2mm, total length bending, distortion are not more than 3mm, and distance negative electrode superconduction current stabilization rod iron bared end 60mm place is coated with coating, are coated with the super lower placement in slice width face;
3. the assembling of negative electrode superconduction current stabilization rod iron and cathode carbon pieces adopts cold ramming paste method, and when pricking solid, thickener temperature controls within the scope of 60 �� 10 DEG C, and the preheating temperature of cathode carbon pieces and negative electrode superconduction current stabilization rod iron all controls within the scope of 70 �� 10 DEG C;
4. tamping tool house steward blast is not less than 0.6Mpa, and isocon blast is not less than 0.55Mpa;
5. pricking solid compression ratio in work progress and control at 1.57��1.62:1, thickener pricks solid 5��7 layers, every layer prick solid 2 back and forth;
6. the centrage of negative electrode superconduction current stabilization rod iron matches with carbon block dovetail groove centrage, and deviation is not more than 3mm; Gap �� 16mm after negative electrode superconduction current stabilization rod iron is put well and between carbon block dovetail groove vertical seam hammer carries out pricking admittedly, negative electrode superconduction current stabilization rod iron total length deviation 3810mm �� 5mm after assembling;
(2) the building by laying bricks or stones of cell lining materials:
1. build by laying bricks or stones at the bottom of front discharge channel and the longitudinal and transverse centrage of cell wall, demarcate pot shell level point or line, utilize horizontal line determine datum mark and rule, on cell wall, mark the Altitude control line building each layer by laying bricks or stones according to datum mark;
2. cell lining structure is upwards followed successively by by backplate surface: 100mm thickness calcium silicate board, one layer of 65mm thickness vermiculite heat-insulating insulating brick, on vermiculite heat-insulating insulating brick upper berth 107mm thick novel Superstrong heat-preserving antiseepage thermal insulation layer, antiseepage thermal insulation layer wet build two-layer vermiculite heat-insulating antiseepage brick, antiseepage castable of vibrating between the carbon cathode blocks, two ends and the rod iron that assemble is installed, build refractory brick, build side block, finally carry out sticking with paste between carbon, around stick with paste prick solid;
3. 100mm thickness calcium silicate board is laid: lay after base plate scraggly place aluminium oxide is levelling; By the datum line put well in advance, build by laying bricks or stones from groove center to two ends simultaneously; The long skew back slope masonry processing 100mm thickness calcium silicate board of pot shell two, the ceramic beaverboard of pot shell one layer of �� 20mm of laid on end from inside to outside and the calcium silicate board of one layer of �� 60mm are leaned in two short sides; Calcium silicate board requires laid dry, lays straight, and the fissure of displacement is built by laying bricks or stones, and the seam of calcium silicate board, less than 2mm, is filled up with alumina powder between all gaps;
4. 65mm thickness vermiculite heat-insulating insulating brick: build brickwork joint by laying bricks or stones less than 2mm, and fill up with alumina powder, is forbidden there is space; Insulating brick processed and applied knife saw or brick cutting machine cut, and insulating brick requires after building by laying bricks or stones that surface smoothness is in the tolerance of 2 ��;
5. the thick novel Superstrong heat-preserving antiseepage thermal insulation layer of 107mm: determine the heap reality thickness of the heat insulation material of antiseepage in bulk with mark post location, its compression ratio is 1.215:1, levelling with scraper plate, three-ply board or iron sheet being overlapped is layered on the face of vibrating, crossheading surrounding is counterclockwise vibrated 6��8 times, its tap density 1.65Kg/m3;
6. two-layer vermiculite heat-insulating antiseepage brick masonry: every layer is 132mm thickness, adopts the wet block of the fissure of displacement, builds vertical seam by laying bricks or stones less than or equal to 2mm, and sleeping seam is less than or equal to 3mm, and brick break joint mud plumpness reaches more than 95%, and surface smoothness is in the tolerance of 2 ��;
The construction of 7. antiseepage castable: pot shell inwall surrounding is close to one layer of 20mm ceramic beaverboard, big h=421 �� 3mm of groove, groove end face h=721 �� 3mm; It is close to one layer of �� 60mm calcium silicate board of laying, big h=336 �� 3mm of groove, groove end face h=636 �� 3mm outside ceramic beaverboard; Big of groove is often organized cathode block break joint correspondence position and is close to that calcium silicate board is edge-on puts two blocks of vermiculite heat-insulating insulating bricks, height 230 �� 3mm, width 114 �� 3mm; Groove end face is close to the upright one layer of vermiculite heat-insulating insulating brick of calcium silicate board and edge-on one layer of vermiculite heat-insulating insulating brick, height 230 �� 3mm, width 180 �� 5mm;
8. castable is vibrated Altitude control: near pot shell end 315 �� 05mm, from cathode end 230 �� 05mm; Build the eyebrow brick place wide 150 �� 5mm of castable platform by laying bricks or stones; Surrounding all uses high-strength Impervious Materials, high-strength castable to vibrate the body natural curing phase: maintenance in summer 48 hours, Maintenance in Winter 72 hours;
9. 70mm thick silicon nitride silicon carbide lateral mass is built by laying bricks or stones: side block adopts laid dry, and vertical seam is less than 0.3mm; Regional area is wet to be built, and vertical seam is less than 0.5mm, and sleeping seam, less than 3mm, leads the difference of side wall carbon block faulting of slab ends height to be not more than 5mm mutually; Put the ceramic beaverboard of one layer of �� 20mm, h=620mm between groove side surface side block and pot shell, strengthen end insulation; Filling �� 30mm ceramic beaverboard between corner block and pot shell, gap alumina powder tamps; Hammering into shape with wooden mallet or glue and crowbar adjusts side block, lateral mass dorsal suture alumina powder is filled and is consolidated;
10. thickener is pricked solid: vertical seam eight layers, around seam five layers are pricked solid, carbon paste material prick solid before wants coal powder injection tar, be divided into 7 layers and prick solid, every layer prick admittedly three back and forth, last layer does not stay charcoal cap, flattens with plane set-hammer;Pricking and stick with paste slope higher than cathode carbon pieces surface 300 �� 5mm, the gradient is 135 degree, flat seizing 40 �� 5mm on slope, flat seizing 20 �� 5mm under slope, and the end sticks with paste to cover and is pressed in cathode carbon pieces upper surface.
The present invention builds cell lining structure by laying bricks or stones by process above, it is effectively increased construction quality, improve electric tank cathode electric conductivity, enhancing the heat-insulating property of bottom of electrolytic tank and sidepiece, when making electric tank working, DC voltage is remarkably decreased, hearth and bottom is greatly reduced, Integrated Exchange power consumption controls in industry advanced level.
Claims (1)
1. a large-scale pre-baked cell current stabilization saving construction method, including negative electrode superconduction current stabilization rod iron and the assembling of cathode carbon pieces and building by laying bricks or stones of cell lining materials, its concrete construction method is as follows:
(1) assembling of negative electrode superconduction current stabilization rod iron and cathode carbon pieces:
1. negative electrode adopts 50% graphite carbon block, is of a size of long 3450 �� 5mm �� wide 610 �� 3mm �� high 450 �� 4mm, and dovetail groove is of a size of long 3450 �� 5mm �� wide 170 �� 2mm �� high 200 �� 2mm;
2. negative electrode superconduction current stabilization rod iron is low-resistance high connductivity rod iron, it is of a size of long 1815 �� 2mm �� high 180 �� 2mm �� wide 130 �� 2mm, total length bending, distortion are not more than 3mm, and distance negative electrode superconduction current stabilization rod iron bared end 60mm place is coated with coating, are coated with the super lower placement in slice width face;
3. the assembling of negative electrode superconduction current stabilization rod iron and cathode carbon pieces adopts cold ramming paste method, and when pricking solid, thickener temperature controls within the scope of 60 �� 10 DEG C, and the preheating temperature of cathode carbon pieces and negative electrode superconduction current stabilization rod iron all controls within the scope of 70 �� 10 DEG C;
4. tamping tool house steward blast is not less than 0.6Mpa, and isocon blast is not less than 0.55Mpa;
5. pricking solid compression ratio in work progress and control at 1.57��1.62:1, thickener pricks solid 5��7 layers, every layer prick solid 2 back and forth;
6. the centrage of negative electrode superconduction current stabilization rod iron matches with carbon block dovetail groove centrage, and deviation is not more than 3mm; Gap �� 16mm after negative electrode superconduction current stabilization rod iron is put well and between carbon block dovetail groove vertical seam hammer carries out pricking admittedly, negative electrode superconduction current stabilization rod iron total length deviation 3810mm �� 5mm after assembling;
(2) the building by laying bricks or stones of cell lining materials:
1. build by laying bricks or stones at the bottom of front discharge channel and the longitudinal and transverse centrage of cell wall, demarcate pot shell level point or line, utilize horizontal line determine datum mark and rule, on cell wall, mark the Altitude control line building each layer by laying bricks or stones according to datum mark;
2. cell lining structure is upwards followed successively by by backplate surface: 100mm thickness calcium silicate board, one layer of 65mm thickness vermiculite heat-insulating insulating brick, on vermiculite heat-insulating insulating brick upper berth 107mm thick novel Superstrong heat-preserving antiseepage thermal insulation layer, antiseepage thermal insulation layer wet build two-layer vermiculite heat-insulating antiseepage brick, antiseepage castable of vibrating between the carbon cathode blocks, two ends and the rod iron that assemble is installed, build refractory brick, build side block, finally carry out sticking with paste between carbon, around stick with paste prick solid;
3. 100mm thickness calcium silicate board is laid: lay after base plate scraggly place aluminium oxide is levelling; By the datum line put well in advance, build by laying bricks or stones from groove center to two ends simultaneously; The long skew back slope masonry processing 100mm thickness calcium silicate board of pot shell two, the ceramic beaverboard of pot shell one layer of �� 20mm of laid on end from inside to outside and the calcium silicate board of one layer of �� 60mm are leaned in two short sides; Calcium silicate board requires laid dry, lays straight, and the fissure of displacement is built by laying bricks or stones, and the seam of calcium silicate board, less than 2mm, is filled up with alumina powder between all gaps;
4. 65mm thickness vermiculite heat-insulating insulating brick: build brickwork joint by laying bricks or stones less than 2mm, and fill up with alumina powder, is forbidden there is space;Insulating brick processed and applied knife saw or brick cutting machine cut, and insulating brick requires after building by laying bricks or stones that surface smoothness is in the tolerance of 2 ��;
5. the thick novel Superstrong heat-preserving antiseepage thermal insulation layer of 107mm: determine the heap reality thickness of the heat insulation material of antiseepage in bulk with mark post location, its compression ratio is 1.215:1, levelling with scraper plate, three-ply board or iron sheet being overlapped is layered on the face of vibrating, crossheading surrounding is counterclockwise vibrated 6��8 times, its tap density 1.65Kg/m3;
6. two-layer vermiculite heat-insulating antiseepage brick masonry: every layer is 132mm thickness, adopts the wet block of the fissure of displacement, builds vertical seam by laying bricks or stones less than or equal to 2mm, and sleeping seam is less than or equal to 3mm, and brick break joint mud plumpness reaches more than 95%, and surface smoothness is in the tolerance of 2 ��;
The construction of 7. antiseepage castable: pot shell inwall surrounding is close to one layer of 20mm ceramic beaverboard, big h=421 �� 3mm of groove, groove end face h=721 �� 3mm; It is close to one layer of �� 60mm calcium silicate board of laying, big h=336 �� 3mm of groove, groove end face h=636 �� 3mm outside ceramic beaverboard; Big of groove is often organized cathode block break joint correspondence position and is close to that calcium silicate board is edge-on puts two blocks of vermiculite heat-insulating insulating bricks, height 230 �� 3mm, width 114 �� 3mm; Groove end face is close to the upright one layer of vermiculite heat-insulating insulating brick of calcium silicate board and edge-on one layer of vermiculite heat-insulating insulating brick, height 230 �� 3mm, width 180 �� 5mm;
8. castable is vibrated Altitude control: near pot shell end 315 �� 05mm, from cathode end 230 �� 05mm; Build the eyebrow brick place wide 150 �� 5mm of castable platform by laying bricks or stones; Surrounding all uses high-strength Impervious Materials, high-strength castable to vibrate the body natural curing phase: maintenance in summer 48 hours, Maintenance in Winter 72 hours;
9. 70mm thick silicon nitride silicon carbide lateral mass is built by laying bricks or stones: side block adopts laid dry, and vertical seam is less than 0.3mm; Regional area is wet to be built, and vertical seam is less than 0.5mm, and sleeping seam, less than 3mm, leads the difference of side wall carbon block faulting of slab ends height to be not more than 5mm mutually; Put the ceramic beaverboard of one layer of �� 20mm, h=620mm between groove side surface side block and pot shell, strengthen end insulation; Filling �� 30mm ceramic beaverboard between corner block and pot shell, gap alumina powder tamps; Hammering into shape with wooden mallet or glue and crowbar adjusts side block, lateral mass dorsal suture alumina powder is filled and is consolidated;
10. thickener is pricked solid: vertical seam eight layers, around seam five layers are pricked solid, carbon paste material prick solid before wants coal powder injection tar, be divided into 7 layers and prick solid, every layer prick admittedly three back and forth, last layer does not stay charcoal cap, flattens with plane set-hammer; Pricking and stick with paste slope higher than cathode carbon pieces surface 300 �� 5mm, the gradient is 135 degree, flat seizing 40 �� 5mm on slope, flat seizing 20 �� 5mm under slope, and the end sticks with paste to cover and is pressed in cathode carbon pieces upper surface.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109023426A (en) * | 2018-07-30 | 2018-12-18 | 甘肃东兴铝业有限公司 | A kind of full graphitization cathode inner lining structure of aluminium cell and preparation method thereof |
| CN116283358A (en) * | 2023-04-26 | 2023-06-23 | 青岛瑞莱斯机械有限公司 | Surface treatment method for cell shell of aluminum electrolysis cell |
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