CN105648474B - Large-scale pre-baked cell current stabilization saving construction method - Google Patents
Large-scale pre-baked cell current stabilization saving construction method Download PDFInfo
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- CN105648474B CN105648474B CN201610135337.2A CN201610135337A CN105648474B CN 105648474 B CN105648474 B CN 105648474B CN 201610135337 A CN201610135337 A CN 201610135337A CN 105648474 B CN105648474 B CN 105648474B
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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
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Abstract
The invention discloses 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 for cell lining materials, the center line of negative electrode superconduction current stabilization rod iron matches with cathode carbon pieces dovetail groove center line, and total length is 3810mm ± 5mm after the assembling of negative electrode superconduction current stabilization rod iron；Cell lining structure is followed successively by upwards by backplate surface：Calcium silicate board, vermiculite heat-insulating insulating brick, thermal-insulating leakage-resistant thermal insulation layer, two layers vermiculite heat-insulating antiseepage brick, install the carbon cathode blocks assembled, two antiseepage castables of being vibrated between end and rod iron, build refractory brick, build side block, finally carry out carbon between paste, around paste prick solid.Invention significantly improves the technological level of the overall brickwork of electrolytic cell, hearth and bottom is substantially reduced, electric conductivity is significantly improved, electrolytic cell furnace bottom and sidepiece heat-insulating property is set substantially to strengthen, electrolytic cell integral heat insulation works well, direct-current working volts are substantially reduced, and Integrated Exchange indicator of power consumption is clearly better.
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 technology neck
Domain.
Background technology：
, it is necessary to which negative electrode has good electric conductivity in electrolytic cell normal productive process, furnace bottom and sidepiece have stronger insulation
Performance.The management of conventional furnace building material and furnace building process indices is not rigorous enough, particularly the quality requirement to main material and
The supervision of keypoint part work progress is not fine enough, it is impossible to ensure that whole process supervision is up to standard, and the production to electrolytic cell causes one
Fixed heat waste and influence, cause the bad control of energy consumption index, and overall productivity effect is not good.
The content of the invention：
The technical problems to be solved by the invention are：Overcoming the deficiencies in the prior art, there is provided a kind of large-scale pre-baked cell current stabilization
Saving construction method.
The present invention is for the technical scheme that is used of solution technical problem：
A kind of large-scale pre-baked cell current stabilization saving construction method, including the assembling of negative electrode superconduction current stabilization rod iron and cathode carbon pieces with
And cell lining materials are built by laying bricks or stones, its concrete construction method is as follows：
（One）The assembling of negative electrode superconduction current stabilization rod iron and cathode carbon pieces：
1. negative electrode uses 50% graphite carbon block, and size is long 3450 ± 5mm × wide 610 ± 3mm × high 450 ± 4mm, swallow
Stern notch size is long 3450 ± 5mm × wide 170 ± 2mm × high 200 ± 2mm；
2. negative electrode superconduction current stabilization rod iron is the highly conductive rod iron of low-resistance, and size is long 1815 ± 2mm × high 180 ± 2mm × wide
130 ± 2mm, total length bending, distortion are not more than 3mm, and coating is coated with negative electrode superconduction current stabilization rod iron bared end 60mm, apply
Slice width placed face down；
3. the assembling of negative electrode superconduction current stabilization rod iron and cathode carbon pieces uses cold ramming paste method, and thickener temperature control exists when pricking solid
In the range of 60 ± 10 DEG C, the preheating temperature of cathode carbon pieces and negative electrode superconduction current stabilization rod iron is controlled in the range 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. solid compression ratio control is pricked in work progress 1.57~1.62:1, thickener pricks solid 5~7 layers, pricks solid 2 for every layer and comes
Return；
5. the center line of negative electrode superconduction current stabilization rod iron matches with carbon block dovetail groove center line, and deviation is not more than 3mm；Negative electrode
The gap that superconduction current stabilization rod iron puts afterwards between carbon block dovetail groove well carries out pricking solid with the vertical seam hammers of δ 16mm, negative electrode superconduction current stabilization rod iron
Total length is 3810mm ± 5mm after assembling；
（Two）Cell lining materials are built by laying bricks or stones：
1. the longitudinal and transverse center line of discharge channel bottom and cell wall before building by laying bricks or stones, demarcation pot shell level point or line, are determined using horizontal line
Datum mark is simultaneously rule, and marks the height control line for building each layer by laying bricks or stones on cell wall according to datum mark；
2. cell lining structure is followed successively by upwards by backplate surface：100mm thickness calcium silicate board, the thick vermiculite of one layer of 65mm every
Two layers of vermiculite heat-insulating of wet block on hot insulating brick, vermiculite heat-insulating insulating brick upper berth 107mm thickness thermal-insulating leakage-resistants thermal insulation layer, the thermal insulation layer of impervious
Carbon cathode blocks that antiseepage brick, installation are assembled, two antiseepage castables of being vibrated between end and rod iron, build refractory brick, build sidepieces
Paste, surrounding paste are pricked admittedly between block, finally progress carbon；
3. the thick calcium silicate board layings of 100mm：Bottom plate it is scraggly place with aluminum oxide it is levelling after laid；By advance
The datum line put well, is built by laying bricks or stones simultaneously from groove center to two ends；The long thick calcium silicates of skew back slope masonry processing 100mm of pot shell two
Plate, calcium silicate board of two short sides by pot shell one layer of δ 20mm of laid on end ceramic beaverboard and one layer of δ 60mm from inside to outside；Calcium silicates
Plate requires laid dry, and laying is straight, and the fissure of displacement is built by laying bricks or stones, and the seam of calcium silicate board is less than between 2mm, all gaps is filled up with alumina powder；
4. thick vermiculite heat-insulating insulating bricks of 65mm：Brickwork joint is built by laying bricks or stones less than 2 mm, and is filled up with alumina powder, is forbidden have space；
Insulating brick processed and applied knife saw or brick cutting machine are cut, and require surface smoothness in 2 ‰ tolerance after insulation brick masonry；
5. thick thermal-insulating leakage-resistant thermal insulation layers of 107mm：The real thickness of heap for determining the heat-insulated material of antiseepage in bulk is positioned with mark post, it compresses
Than for 1.215：1, it is levelling with scraper plate, three-ply board or iron sheet overlap joint are layered on the face of vibrating, crossheading surrounding is counterclockwise vibrated
6~8 times, its tap density 1.65Kg/m3；
6. two layers of vermiculite heat-insulating antiseepage brick masonry：Every layer is 132mm thick, is built using the fissure of displacement is wet, builds vertical seam by laying bricks or stones and is less than etc.
In 2mm, the seam that crouches is less than or equal to seam mud plumpness between 3mm, brick and reaches more than 95%, and surface smoothness is in 2 ‰ tolerance；
7. the construction of antiseepage castable：Pot shell inwall surrounding is close to one layer of 20mm ceramic beaverboard, and big face h=421 of groove ±
3mm, groove end face h=721 ± 3mm；It is close to one layer of δ 60mm calcium silicate board of laying outside ceramic beaverboard, big face h=336 of groove ±
3mm, groove end face h=636 ± 3mm；Correspondence position is stitched between the cathode block of every group of the big face of groove and is close to that calcium silicate board is edge-on to put two pieces
Vermiculite heat-insulating insulating brick, 230 ± 3mm of height, 114 ± 3mm of width；Groove end face is close to the upright one layer of vermiculite heat-insulating of calcium silicate board
Insulating brick and edge-on one layer of vermiculite heat-insulating insulating brick, 230 ± 3mm of height, 180 ± 5mm of width；
8. castable is vibrated height control:Close to 315 ± 05mm of pot shell end, away from 230 ± 05mm of cathode end；Build eyebrow by laying bricks or stones
Wide 150 ± the 5mm of castable platform at brick；Surrounding uses high-strength Impervious Materials, and high-strength castable is vibrated the body natural curing phase：Summer
Maintenance 48 hours, Maintenance in Winter 72 hours；
9. 70mm thick silicon nitrides silicon carbide lateral mass is built by laying bricks or stones：Side block uses laid dry, founds seam and is less than 0.3mm；Partial zones
Domain is wet to build, and founds seam and is less than 0.5mm, and the seam that crouches is less than 3mm, mutually leads the difference of side wall carbon block faulting of slab ends height to be not more than 5mm；Groove side surface side
One layer of δ 20mm ceramic beaverboard is put between block and pot shell, h=620mm strengthens end insulation；δ is filled between corner block and pot shell
30mm ceramic beaverboards, gap is tamped with alumina powder；Side block, lateral mass dorsal suture oxygen are adjusted with wooden mallet or glue hammer and crowbar
Change aluminium powder to fill and consolidate；
10. thickener is pricked solid：Vertical eight layers of seam, five layers of surrounding seam prick solid, and carbon paste material wants coal powder injection tar before pricking admittedly, is divided into 7 layers of bundle
Gu, every layer is pricked solid three back and forth, and last layer does not stay charcoal cap, is flattened with plane set-hammer；Prick paste slope and be higher than cathode carbon pieces surface
300 ± 5mm, the gradient is 135 degree, 40 ± 5mm of flat seizing on slope, 20 ± 5mm of flat seizing under slope, and bottom paste, which should be covered, is pressed in cathode carbon pieces
Upper surface.
The present invention positive beneficial effect be：By the assemblings of the highly conductive current stabilization rod iron of electric tank cathode and cathode carbon pieces and
Cell lining materials build the application of new technology by laying bricks or stones, significantly improve the overall furnace building process managerial skills of electrolytic cell, electrolytic cell
Hearth and bottom is substantially reduced during work, and electric conductivity is significantly improved, while making electrolytic cell furnace bottom and sidepiece heat-insulating property obvious
To reinforcement, electrolytic cell integral heat insulation works well, and direct-current working volts reduce by 200~300mV, Integrated Exchange power consumption compared with regular troughs
Index is clearly better.
Specific implementation method：
The present invention is made further explanation and description with reference to specific embodiment：
A kind of large-scale pre-baked cell current stabilization saving construction method, including the assembling of negative electrode superconduction current stabilization rod iron and cathode carbon pieces with
And cell lining materials are built by laying bricks or stones, its concrete construction method is as follows：
（One）The assembling of negative electrode superconduction current stabilization rod iron and cathode carbon pieces：
1. negative electrode uses 50% graphite carbon block, and size is long 3450 ± 5mm × wide 610 ± 3mm × high 450 ± 4mm, swallow
Stern notch size is long 3450 ± 5mm × wide 170 ± 2mm × high 200 ± 2mm；
2. negative electrode superconduction current stabilization rod iron is the highly conductive rod iron of low-resistance, and size is long 1815 ± 2mm × high 180 ± 2mm × wide
130 ± 2mm, total length bending, distortion are not more than 3mm, and coating is coated with negative electrode superconduction current stabilization rod iron bared end 60mm, apply
Slice width placed face down；
3. the assembling of negative electrode superconduction current stabilization rod iron and cathode carbon pieces uses cold ramming paste method, and thickener temperature control exists when pricking solid
In the range of 60 ± 10 DEG C, the preheating temperature of cathode carbon pieces and negative electrode superconduction current stabilization rod iron is controlled in the range 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. solid compression ratio control is pricked in work progress 1.57~1.62:1, thickener pricks solid 5~7 layers, pricks solid 2 for every layer and comes
Return；
5. the center line of negative electrode superconduction current stabilization rod iron matches with carbon block dovetail groove center line, and deviation is not more than 3mm；Negative electrode
The gap that superconduction current stabilization rod iron puts afterwards between carbon block dovetail groove well carries out pricking solid with the vertical seam hammers of δ 16mm, negative electrode superconduction current stabilization rod iron
Total length deviation 3810mm ± 5mm after assembling；
（Two）Cell lining materials are built by laying bricks or stones：
1. the longitudinal and transverse center line of discharge channel bottom and cell wall before building by laying bricks or stones, demarcation pot shell level point or line, are determined using horizontal line
Datum mark is simultaneously rule, and marks the height control line for building each layer by laying bricks or stones on cell wall according to datum mark；
2. cell lining structure is followed successively by upwards by backplate surface：100mm thickness calcium silicate board, the thick vermiculite of one layer of 65mm every
Two layers of vermiculite heat-insulating of wet block on hot insulating brick, vermiculite heat-insulating insulating brick upper berth 107mm thickness thermal-insulating leakage-resistants thermal insulation layer, the thermal insulation layer of impervious
Carbon cathode blocks that antiseepage brick, installation are assembled, two antiseepage castables of being vibrated between end and rod iron, build refractory brick, build sidepieces
Paste, surrounding paste are pricked admittedly between block, finally progress carbon；
3. the thick calcium silicate board layings of 100mm：Bottom plate it is scraggly place with aluminum oxide it is levelling after laid；By advance
The datum line put well, is built by laying bricks or stones simultaneously from groove center to two ends；The long thick calcium silicates of skew back slope masonry processing 100mm of pot shell two
Plate, calcium silicate board of two short sides by pot shell one layer of δ 20mm of laid on end ceramic beaverboard and one layer of δ 60mm from inside to outside；Calcium silicates
Plate requires laid dry, and laying is straight, and the fissure of displacement is built by laying bricks or stones, and the seam of calcium silicate board is less than between 2mm, all gaps is filled up with alumina powder；
4. thick vermiculite heat-insulating insulating bricks of 65mm：Brickwork joint is built by laying bricks or stones less than 2 mm, and is filled up with alumina powder, is forbidden have space；
Insulating brick processed and applied knife saw or brick cutting machine are cut, and require surface smoothness in 2 ‰ tolerance after insulation brick masonry；
5. thick thermal-insulating leakage-resistant thermal insulation layers of 107mm：The real thickness of heap for determining the heat-insulated material of antiseepage in bulk is positioned with mark post, it compresses
Than for 1.215：1, it is levelling with scraper plate, three-ply board or iron sheet overlap joint are layered on the face of vibrating, crossheading surrounding is counterclockwise vibrated
6~8 times, its tap density 1.65Kg/m3；
6. two layers of vermiculite heat-insulating antiseepage brick masonry：Every layer is 132mm thick, is built using the fissure of displacement is wet, builds vertical seam by laying bricks or stones and is less than etc.
In 2mm, the seam that crouches is less than or equal to seam mud plumpness between 3mm, brick and reaches more than 95%, and surface smoothness is in 2 ‰ tolerance；
7. the construction of antiseepage castable：Pot shell inwall surrounding is close to one layer of 20mm ceramic beaverboard, and big face h=421 of groove ±
3mm, groove end face h=721 ± 3mm；It is close to one layer of δ 60mm calcium silicate board of laying outside ceramic beaverboard, big face h=336 of groove ±
3mm, groove end face h=636 ± 3mm；Correspondence position is stitched between the cathode block of every group of the big face of groove and is close to that calcium silicate board is edge-on to put two pieces
Vermiculite heat-insulating insulating brick, 230 ± 3mm of height, 114 ± 3mm of width；Groove end face is close to the upright one layer of vermiculite heat-insulating of calcium silicate board
Insulating brick and edge-on one layer of vermiculite heat-insulating insulating brick, 230 ± 3mm of height, 180 ± 5mm of width；
8. castable is vibrated height control:Close to 315 ± 05mm of pot shell end, away from 230 ± 05mm of cathode end；Build eyebrow by laying bricks or stones
Wide 150 ± the 5mm of castable platform at brick；Surrounding uses high-strength Impervious Materials, and high-strength castable is vibrated the body natural curing phase：Summer
Maintenance 48 hours, Maintenance in Winter 72 hours；
9. 70mm thick silicon nitrides silicon carbide lateral mass is built by laying bricks or stones：Side block uses laid dry, founds seam and is less than 0.3mm；Partial zones
Domain is wet to build, and founds seam and is less than 0.5mm, and the seam that crouches is less than 3mm, mutually leads the difference of side wall carbon block faulting of slab ends height to be not more than 5mm；Groove side surface side
One layer of δ 20mm ceramic beaverboard is put between block and pot shell, h=620mm strengthens end insulation；δ is filled between corner block and pot shell
30mm ceramic beaverboards, gap is tamped with alumina powder；Side block, lateral mass dorsal suture oxygen are adjusted with wooden mallet or glue hammer and crowbar
Change aluminium powder to fill and consolidate；
10. thickener is pricked solid：Vertical eight layers of seam, five layers of surrounding seam prick solid, and carbon paste material wants coal powder injection tar before pricking admittedly, is divided into 7 layers of bundle
Gu, every layer is pricked solid three back and forth, and last layer does not stay charcoal cap, is flattened with plane set-hammer；Prick paste slope and be higher than cathode carbon pieces surface
300 ± 5mm, the gradient is 135 degree, 40 ± 5mm of flat seizing on slope, 20 ± 5mm of flat seizing under slope, and bottom paste, which should be covered, is pressed in cathode carbon pieces
Upper surface.
The present invention builds cell lining structure by laying bricks or stones by process above, effectively increases construction quality, improves electrolytic cell
Cathodic conductivity energy, enhances the heat-insulating property of bottom of electrolytic tank and sidepiece, be remarkably decreased during electric tank working DC voltage,
Hearth and bottom is greatly reduced, the control of Integrated Exchange power consumption is in industry advanced level.
Claims (1)
1. a kind of large-scale pre-baked cell current stabilization saving construction method, including negative electrode superconduction current stabilization rod iron and cathode carbon pieces assembling and
Cell lining materials are built by laying bricks or stones, and its concrete construction method is as follows：
（One）The assembling of negative electrode superconduction current stabilization rod iron and cathode carbon pieces：
1. negative electrode uses 50% graphite carbon block, and size is long 3450 ± 5mm × wide 610 ± 3mm × high 450 ± 4mm, dovetail groove
Size is long 3450 ± 5mm × wide 170 ± 2mm × high 200 ± 2mm；
2. negative electrode superconduction current stabilization rod iron is the highly conductive rod iron of low-resistance, size be long 1815 ± 2mm × high 180 ± 2mm × wide by 130 ±
2mm, total length bending, distortion are not more than 3mm, and coating is coated with negative electrode superconduction current stabilization rod iron bared end 60mm, apply slice width
Placed face down；
3. the assembling of negative electrode superconduction current stabilization rod iron and cathode carbon pieces uses cold ramming paste method, when pricking solid thickener temperature control 60 ±
In the range of 10 DEG C, the preheating temperature of cathode carbon pieces and negative electrode superconduction current stabilization rod iron is controlled in the range 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. solid compression ratio control is pricked in work progress 1.57~1.62:1, thickener pricks solid 5~7 layers, and every layer is pricked solid 2 back and forth；
5. the center line of negative electrode superconduction current stabilization rod iron matches with carbon block dovetail groove center line, and deviation is not more than 3mm；Negative electrode superconduction
The gap that current stabilization rod iron puts afterwards between carbon block dovetail groove well carries out pricking solid with the vertical seam hammers of δ 16mm, and negative electrode superconduction current stabilization rod iron is in group
Total length is 3810mm ± 5mm after dress；
（Two）Cell lining materials are built by laying bricks or stones：
1. the longitudinal and transverse center line of discharge channel bottom and cell wall before building by laying bricks or stones, demarcation pot shell level point or line, benchmark is determined using horizontal line
Put and rule, mark the height control line for building each layer by laying bricks or stones on cell wall according to datum mark；
2. cell lining structure is followed successively by upwards by backplate surface：100mm thickness calcium silicate board, the thick vermiculite heat-insulatings of one layer of 65mm are protected
Two layers of vermiculite heat-insulating antiseepage of wet block on warm brick, vermiculite heat-insulating insulating brick upper berth 107mm thickness thermal-insulating leakage-resistants thermal insulation layer, the thermal insulation layer of impervious
Carbon cathode blocks that brick, installation are assembled, two antiseepage castables of being vibrated between end and rod iron, build refractory brick, build side block, most
Paste, surrounding paste are pricked admittedly between progress carbon afterwards；
3. the thick calcium silicate board layings of 100mm：Bottom plate it is scraggly place with aluminum oxide it is levelling after laid；By putting well in advance
Datum line, from groove center to two ends simultaneously built by laying bricks or stones；The long thick calcium silicate boards of skew back slope masonry processing 100mm of pot shell two,
Calcium silicate board of two short sides by pot shell one layer of δ 20mm of laid on end ceramic beaverboard and one layer of δ 60mm from inside to outside；Calcium silicate board will
Laid dry is asked, laying is straight, and the fissure of displacement is built by laying bricks or stones, the seam of calcium silicate board is less than between 2mm, all gaps is filled up with alumina powder；
4. thick vermiculite heat-insulating insulating bricks of 65mm：Brickwork joint is built by laying bricks or stones less than 2 mm, and is filled up with alumina powder, is forbidden have space；Insulation
Brick processed and applied knife saw or brick cutting machine are cut, and require surface smoothness in 2 ‰ tolerance after insulation brick masonry；
5. thick thermal-insulating leakage-resistant thermal insulation layers of 107mm：The real thickness of heap for determining the heat-insulated material of antiseepage in bulk is positioned with mark post, its compression ratio is
1.215 ：1, it is levelling with scraper plate, three-ply board or iron sheet overlap joint are layered on the face of vibrating, crossheading surrounding counterclockwise vibrates 6~8
All over its tap density 1.65Kg/m3；
6. two layers of vermiculite heat-insulating antiseepage brick masonry：Every layer is 132mm thick, is built using the fissure of displacement is wet, builds vertical seam by laying bricks or stones and be less than or equal to
2mm, the seam that crouches is less than or equal to seam mud plumpness between 3mm, brick and reaches more than 95%, and surface smoothness is in 2 ‰ tolerance；
7. the construction of antiseepage castable：Pot shell inwall surrounding is close to one layer of 20mm ceramic beaverboard, the big face h=421 ± 3mm of groove, groove
End face h=721 ± 3mm；It is close to one layer of δ 60mm calcium silicate board of laying, the big face h=336 ± 3mm of groove, groove end outside ceramic beaverboard
Face h=636 ± 3mm；Correspondence position is stitched between the cathode block of every group of the big face of groove and is close to that calcium silicate board is edge-on to put two pieces of vermiculite heat-insulatings
Insulating brick, 230 ± 3mm of height, 114 ± 3mm of width；Groove end face be 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, 230 ± 3mm of height, 180 ± 5mm of width；
8. castable is vibrated height control:Close to 315 ± 05mm of pot shell end, away from 230 ± 05mm of cathode end；Build by laying bricks or stones at eyebrow brick
Wide 150 ± the 5mm of castable platform；Surrounding uses high-strength Impervious Materials, and high-strength castable is vibrated the body natural curing phase：Summer conserves
48 hours, Maintenance in Winter 72 hours；
9. 70mm thick silicon nitrides silicon carbide lateral mass is built by laying bricks or stones：Side block uses laid dry, founds seam and is less than 0.3mm；Regional area is wet
Build, found seam and be less than 0.5mm, the seam that crouches is less than 3mm, mutually lead the difference of side wall carbon block faulting of slab ends height to be not more than 5mm；Groove side surface side block with
One layer of δ 20mm ceramic beaverboard is put between pot shell, h=620mm strengthens end insulation；δ 30mm are filled between corner block and pot shell
Tamped with alumina powder in ceramic beaverboard, gap；Side block, lateral mass dorsal suture aluminum oxide are adjusted with wooden mallet or glue hammer and crowbar
Powder is filled and consolidated；
10. thickener is pricked solid：Vertical eight layers of seam, five layers of surrounding seam prick solid, and carbon paste material wants coal powder injection tar before pricking admittedly, are divided into 7 layers and prick solid,
Every layer is pricked solid three back and forth, and last layer does not stay charcoal cap, is flattened with plane set-hammer；Prick paste slope and be higher than cathode carbon pieces surface 300
± 5mm, the gradient is 135 degree, 40 ± 5mm of flat seizing on slope, 20 ± 5mm of flat seizing under slope, and bottom paste, which should be covered, to be pressed on cathode carbon pieces
Surface.
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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 |
| CN116283358B (en) * | 2023-04-26 | 2024-04-09 | 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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