CN209144276U - A kind of full graphitization cathode inner lining structure of aluminium cell - Google Patents
A kind of full graphitization cathode inner lining structure of aluminium cell Download PDFInfo
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- CN209144276U CN209144276U CN201821217316.6U CN201821217316U CN209144276U CN 209144276 U CN209144276 U CN 209144276U CN 201821217316 U CN201821217316 U CN 201821217316U CN 209144276 U CN209144276 U CN 209144276U
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Abstract
The utility model relates to electrolysis industry technical equipment fields, and in particular to a kind of full graphitization cathode inner lining structure of aluminium cell.Highly conductive rod iron is pasted with ceramic fiber blanket and is separated with highly conductive anti-carburizi ng cathode steel bar by the full graphitization cathode inner lining structure of the aluminium cell of the utility model by the inside end of two highly conductive anti-carburizi ng cathode steel bars, the swelling stress of highly conductive anti-carburizi ng cathode steel bar is absorbed, the influence to full graphitized cathode carbon block is reduced.Steel plate is equipped between insulating fire brick and vermiculite antiseepage brick, the effect of steel plate is effectively to block and prevent the fluoride permeated from top from continuing infiltration downwards, when steel plate is blocked up greater than 2mm, the deformation of steel plate own tension easily leads to vermiculite antiseepage brick and presses not firm and liner gap occur；When steel plate is excessively thin less than 2mm, the heated generation tension set of steel plate easily leads to vermiculite antiseepage brick and presses not firm and liner gap occur.
Description
Technical field
The utility model relates to electrolysis industry technical equipment fields, and in particular in a kind of full graphitization cathode of aluminium cell
Lining structure.
Background technique
Traditional 500kA aluminium cell using 50% or so graphite cathode carbon block, conventional cathode rod iron, dry type impervious material,
Antiseepage castable such as contacts at the inner lining structures with cathode carbon pieces, and there are the anti-sodium aggressivities of cathode that poor, antiseepage is poured for the design of inner lining structure
Material feeding restricts the problems such as cathode carbon pieces stress release and poor dry type impervious material barrier properties, to cause electrolytic cell furnace bottom voltage drop
The problems such as higher and liner service life reduction.
Utility model content
Purpose of the utility model is to solve the anti-sodium aggressivities of the cathode of cell lining structure in the prior art
The problem of difference, barrier properties difference etc. cause higher electrolytic cell furnace bottom voltage drop and liner service life reduction, provides a kind of aluminium electroloysis
The full graphitization cathode inner lining structure of slot.
The utility model solves technical solution used by its technical problem are as follows:
A kind of full graphitization cathode inner lining structure of aluminium cell,
Ceramic beaverboard and eakleite composite adiabatic brick including electrolytic cell housing bottom is arranged in；
The eakleite composite adiabatic brick is equipped with insulating fire brick, steel plate and vermiculite antiseepage brick；
Full graphitized cathode carbon block and the highly conductive anti-carburizi ng cathode steel bar of multiple groups are equipped with above vermiculite antiseepage brick；
Full graphitized cathode carbon block is covered on highly conductive anti-carburizi ng cathode steel bar；Highly conductive anti-carburizi ng cathode steel bar and complete
Highly conductive rod iron is equipped between graphitized cathode carbon block to paste；
The outside of full graphitized cathode carbon block is equipped with cathode paste, and the outside of cathode paste is equipped with side anti-seepage heat preservation layer.
The top of the eakleite composite adiabatic brick is laid with insulating fire brick, steel plate and vermiculite antiseepage brick, insulating refractory
Brick, steel plate and vermiculite antiseepage brick are successively laid with from below to up, steel plate thickness 2mm.
The highly conductive anti-carburizi ng cathode steel bar forms one group by two, every group of highly conductive anti-carburizi ng cathode steel bar splicing and
At stitching portion is pasted equipped with highly conductive rod iron.
Ceramic fiber blanket is equipped between the highly conductive anti-carburizi ng cathode steel bar stitching portion and highly conductive rod iron paste.
The side anti-seepage heat preservation layer includes the carbon block that the side composite block of cathode paste upper outside is arranged in, and side is compound
The outside of the carbon block of block is equipped with the silicon nitride combined silicon carbide brick of side composite block, the silicon nitride combined silicon carbide of side composite block
The bottom of brick is equipped with the first vermiculite insulating brick, and the bottom of the first vermiculite insulating brick is equipped with ceramic beaverboard, ceramic beaverboard it is interior
Side is equipped with eakleite composite adiabatic brick, and the inside of eakleite composite adiabatic brick is equipped with the second vermiculite insulating brick, the second vermiculite
Cavity is formed between insulating brick, the first vermiculite insulating brick and the cathode paste of highly conductive anti-carburizi ng cathode steel bar side, is filled out in cavity
Filled with antiseepage castable.
Between the lower part of the full graphitized cathode carbon block and highly conductive anti-carburizi ng cathode steel bar be equipped with triangle insulation layer, three
Cathode steel bar ramming mass is filled in the insulation layer of angle.
The both ends lower part of the full graphitized cathode carbon block is equipped with chamfering, is filled with cathode paste, the angle of chamfering in chamfering
It is 50 ~ 60 °.
Expose the outer 120 ~ 270m of full graphitized cathode carbon block, highly conductive antiseepage in the highly conductive anti-carburizi ng cathode steel bar both ends
The refractory wass material of carbon cathode rod iron two sides and top surface brush 3mm thickness, refractory wass material is by SiC refractory wass and waterglass
Mixing, SiC refractory wass are mixed with waterglass by weight 3:1.
Between the full graphitized cathode carbon block and vermiculite antiseepage brick and highly conductive anti-carburizi ng cathode steel bar is prevented with vermiculite
It seeps and is equipped with alumina layer between brick.
The utility model compared with the existing technology, has the advantages that the full graphite of the aluminium cell of the utility model
Change cathode inner lining structure highly conductive rod iron is pasted to the inside end of two highly conductive anti-carburizi ng cathode steel bars with ceramic fiber blanket
It is separated with highly conductive anti-carburizi ng cathode steel bar, absorbs the swelling stress of highly conductive anti-carburizi ng cathode steel bar, reduce to full stone
The influence of inkization cathode carbon pieces.Steel plate is equipped between insulating fire brick and vermiculite antiseepage brick, the effect of steel plate is effectively to hinder
Break and prevents the fluoride permeated from top from continuing infiltration downwards, when steel plate is blocked up greater than 2mm, the change of steel plate own tension
Shape easily leads to vermiculite antiseepage brick and presses not firm and liner gap occur；When steel plate is excessively thin less than 2mm, the heated tension that generates of steel plate becomes
Shape easily leads to vermiculite antiseepage brick and presses not firm and liner gap occur.
The utility model can keep good thermal balance and electric equilibrium, and internal Isothermal Line Distribution is reasonable, both ensure that electrolysis
The steady production of slot, and lateral lining is protected well, extend the service life of electrolytic bath.The utility model uses object
Rationality can the more preferably high density of high-quality shot coke production, high-intensitive full graphitized cathode carbon block, have the advantage that
(1) resistivity is smaller
100% full graphitized cathode carbon block resistivity (1000 DEG C)≤10 Ω .mm2/ m, compared with 50% graphite cathode carbon block
Resistivity (≤17 Ω .mm2/ m) reduce by 7 Ω .mm2/ m or more, 41.18% or more the range of decrease advantageously reduce furnace bottom voltage drop, save
Ton aluminium power consumption.
(2) na expansion rate is lower
100% full graphitized cathode carbon block na expansion rate≤0.3%, compared with 50% graphite cathode carbon block na expansion rate (≤
0.65%) 0.35% or more is reduced, 53.85% or more the range of decrease is conducive to extend bath life.
(3) thermal conductivity is higher
100% full graphitized cathode carbon block thermal conductivity (1000 DEG C) >=50W/m.K, it is thermally conductive compared with 50% graphite cathode carbon block
Rate (≤20 ± 2.0W/m.K) increases 28W/m.K or more, and 127.27% or more increasing degree can make cathode edge hotter and help to subtract
Few precipitating, it helps too long problem of stretching one's legs when avoiding the formation of reasonable furnace side thickness.
(4) Young's modulus is lower
100% full graphitized cathode carbon block Young's modulus≤5GPa, compared with 50% graphite cathode carbon block Young's modulus (≤
28.57% or more 7GPa) is reduced, correspondingly, average coefficient of thermal expansion (20~950 DEG C) (4.5 ± 0.5) × 10-6/ DEG C compared with 50% graphite
Matter cathode carbon pieces are averaged coefficient of thermal expansion (20~950 DEG C) (3.5 ± 0.5) × 10-6/ DEG C 28.57% or more is increased, to making up cathode
The cathode paste shrinkage joint being affixed between the cathode paste and cathode carbon pieces concordant with cathode carbon pieces bottom surface is pricked on carbon block periphery to be had more
For positive effect.
(5) intensity is bigger
100% full graphitized cathode carbon block real density >=2.18 g/cm3, compared with 50% graphite cathode carbon block real density (>=
1.98 g/cm3) increase 0.2 g/cm3More than, 10.1% or more amplification, although handling by high temperature graphitization, ash content is reduced
83.33%, the porosity increases 25%, and bulk density still increases by 6.33%, and flexural strength remains unchanged, and compressive resistance is decreased slightly as low
3.85%, make full graphitized cathode carbon block intensity be sufficient for being actually needed.
The na expansion rate of full graphitized cathode carbon block is much smaller than 50% graphite cathode carbon block, this is because full graphitization yin
Pole carbon block volume is finer and close, and ash content is small, and sodium absorption rate is small, and carbon block na expansion is small, and when being constrained by liner and pot shell, carbon block to
Upper protuberance is small；During electrolysis production, sodium enters charcoal-steel contact surface by full graphitized cathode carbon block, and anti-with ice crystal
Aluminium and sodium fluoride should be formed, iron charcoal contact resistance is increased, since full graphitized cathode carbon block volume is fine and close, sodium absorbs and diffusion
Much smaller than 50% graphite cathode carbon block, therefore, full the hearth and bottom of graphitized cathode carbon block is smaller, and with the production time
It is also gentler to increase variation；The satisfactory electrical conductivity and thermal conductive resin that full graphitized cathode carbon block has, can also bear higher
Electric current, also there is stronger adaptation stability to local high current.
The utility model use highly conductive anti-carburizi ng cathode steel bar, highly conductive anti-carburizi ng cathode steel bar material be C≤
0.01%, the purity of Mn≤0.15%, Si≤0.07%, P≤0.02%, S≤0.012%, steel, highly conductive anti-carburizi ng cathode steel bar mentions
Height, resistivity reduction advantageously reduce its voltage drop.And highly conductive anti-carburizi ng cathode steel bar surface has carried out anti-carburizi ng processing,
Its high conductivity can be kept for a long time.The utility model is pasted using highly conductive rod iron, and highly conductive rod iron pastes resistivity≤40 μ Ω m,
More common rod iron paste resistivity (≤75 μ Ω m) reduces by 35 μ Ω m or more, and 46.67% or more the range of decrease advantageously reduces rod iron
Paste voltage drop.
The side anti-seepage heat preservation layer of the utility model has good thermal insulation property, can be greatly lowered in cathode voltage
In the case of guarantee the thermal balance in region and entirety, while solving electrolytic cell adaptation in the case where not excessive extraneoas loss energy consumption
The problem of four seasons temperature change.Side anti-seepage heat preservation layer is directly levelling using antiseepage castable, reduces heat dissipation channel；Antiseepage is poured
Material feeding is not contacted with full graphitized cathode carbon block, avoids forming shearing force to full graphitized cathode carbon block and causing to be graphitized yin entirely
Pole carbon block is damaged.
Triangle is equipped between the lower part of the full graphitized cathode carbon block of the utility model and highly conductive anti-carburizi ng cathode steel bar
Insulating regions, triangle insulating regions are interior to be filled with cathode steel bar ramming mass (refractory wass), can further improve graphitization yin
Current path in the carbon block group of pole reduces horizontal current component 9 ~ 10%.
The both ends lower part of the full graphitized cathode carbon block of the utility model is equipped with chamfering, is filled with cathode paste in chamfering, can
To reduce heat dissipation, it is beneficial to form furnace side in production process and stretch one's legs.
Expose the two of the outer 120 ~ 270mm of full graphitized cathode carbon block in the utility model highly conductive anti-carburizi ng cathode steel bar both ends
Side and top surface are brushed with the refractory wass and waterglass mixture of 3mm thickness, will be highly conductive anti-other than full graphitized cathode carbon block
Carburizing cathode steel bar and cathode paste are separated without conducting electric current, are made three faces of highly conductive anti-carburizi ng cathode steel bar in the outer part and are prevented
Castable is seeped directly to contact.Rod iron bottom surface is not brushed, and the current path in graphitized cathode carbon block group, effective limit levels can be improved
The increase of current component.
Detailed description of the invention
Fig. 1 is the cross-sectional view of the utility model.
Fig. 2 is the sectional view along A-A of the utility model Fig. 1.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawings and detailed description.
A kind of full graphitization cathode inner lining structure of aluminium cell,
Ceramic beaverboard 1 and eakleite composite adiabatic brick 2 including electrolytic cell housing bottom is arranged in；
The eakleite composite adiabatic brick 2 is equipped with insulating fire brick 3, steel plate 4 and vermiculite antiseepage brick 5；
Full graphitized cathode carbon block 9 and the highly conductive anti-carburizi ng cathode steel bar 6 of multiple groups are equipped with above vermiculite antiseepage brick 5；
Full graphitized cathode carbon block 9 is covered on highly conductive anti-carburizi ng cathode steel bar 6；Highly conductive anti-carburizi ng cathode steel bar 6
Highly conductive rod iron paste 13 is equipped between full graphitized cathode carbon block 9；The outside of full graphitized cathode carbon block 9 is equipped with cathode paste
10, the outside of cathode paste 10 is equipped with side anti-seepage heat preservation layer.
The top of the eakleite composite adiabatic brick 2 is laid with insulating fire brick 3, steel plate 4 and vermiculite antiseepage brick 5, heat-insulated
Refractory brick 3, steel plate 4 and vermiculite antiseepage brick 5 are successively laid with from below to up, 4 thickness 2mm of steel plate.The highly conductive antiseepage carbon cathode
Rod iron 6 forms one group by two, and every group of highly conductive anti-carburizi ng cathode steel bar is spliced, and stitching portion is pasted equipped with highly conductive rod iron
13.Ceramic fiber blanket 12 is equipped between the highly conductive anti-carburizi ng cathode steel bar stitching portion and highly conductive rod iron paste 13.
The side anti-seepage heat preservation layer includes the carbon block 14 that the side composite block of 10 upper outside of cathode paste is arranged in, side
The outside of the carbon block 14 of composite block is equipped with the silicon nitride combined silicon carbide brick 11 of side composite block, the silicon nitride knot of side composite block
The bottom for closing silicon carbide brick 11 is equipped with the first vermiculite insulating brick 15, and the bottom of the first vermiculite insulating brick 15 is equipped with ceramic beaverboard 1,
The inside of ceramic beaverboard 1 is equipped with eakleite composite adiabatic brick 2, and the inside of eakleite composite adiabatic brick 2 is equipped with the second leech
Stone insulating brick 7, the cathode paste of the second vermiculite insulating brick 7, the first vermiculite insulating brick 15 and highly conductive 6 side of anti-carburizi ng cathode steel bar
Cavity is formed between 10, is filled with antiseepage castable 8 in cavity.
Triangle insulation layer is equipped between the lower part of the full graphitized cathode carbon block 9 and highly conductive anti-carburizi ng cathode steel bar 6
18, triangle insulation layer 18 is interior to be filled with cathode steel bar ramming mass.The both ends lower part of the full graphitized cathode carbon block 9 is equipped with chamfering
16, chamfering 16 is interior to be filled with cathode paste 10, and the angle of chamfering 16 is 50 ~ 60 °.Highly conductive 6 both ends of anti-carburizi ng cathode steel bar
Expose the outer 120 ~ 270m of full graphitized cathode carbon block 9, the resistance to of 3mm thickness is brushed in highly conductive 6 two sides of anti-carburizi ng cathode steel bar and top surface
Chamotte pulp material, refractory wass material are mixed by SiC refractory wass and waterglass, and SiC refractory wass and waterglass are by weight
3:1 mixing.Between the full graphitized cathode carbon block 9 and vermiculite antiseepage brick 5 and highly conductive anti-carburizi ng cathode steel bar 6 and vermiculite
Alumina layer 17 is equipped between antiseepage brick 5.
A kind of preparation method of the full graphitization cathode inner lining structure of aluminium cell
A, housing bottom pre-processes
Bottom is laid with ceramic beaverboard 1 and eakleite composite adiabatic brick 2 in electrolytic bath shell body；
B, fire resisting Anti-seeping technology
The top of the eakleite composite adiabatic brick 2 is laid with insulating fire brick 3, steel plate 4 and vermiculite antiseepage brick 5, heat-insulated
Refractory brick 3, steel plate 4 and vermiculite antiseepage brick 5 are successively laid with from below to up；
C, carbon cathode blocks are assembled
The highly conductive anti-carburizi ng cathode steel bar 6 forms one group by two, every group of highly conductive anti-carburizi ng cathode steel bar splicing
It forms, stitching portion is equipped with highly conductive rod iron paste 13, the highly conductive anti-carburizi ng cathode steel bar stitching portion and highly conductive rod iron paste 13
Between be equipped with ceramic fiber blanket 12；
D, carbon cathode blocks repairing type
Triangle insulation layer is equipped between the lower part of the full graphitized cathode carbon block 9 and highly conductive anti-carburizi ng cathode steel bar 6
18, triangle insulation layer 18 is interior to be filled with cathode steel bar ramming mass；The both ends lower part of the full graphitized cathode carbon block 9 is equipped with chamfering
16, chamfering 16 is interior to be filled with cathode paste 10, and the angle of chamfering 16 is 50 ~ 60 °；
E, anti-seepage heat preservation layer in side is filled
To the second vermiculite insulating brick 7, the cathode paste of the first vermiculite insulating brick 15 and highly conductive 6 side of anti-carburizi ng cathode steel bar
Cavity is formed between 10, is filled with antiseepage castable 8 in cavity.
As shown in Figs. 1-2, the full graphitization cathode inner lining structure of a kind of aluminium cell, including bottom is set in electrolytic bath shell body
The ceramic beaverboard 1 of portion 10mm thickness, ceramic beaverboard 1 is equipped with the eakleite composite adiabatic brick 2 of 60mm thickness above, in hard silico-calcium
Stone composite adiabatic brick 2 above be successively arranged from below to up 2 layers of 65mm thickness 3,1 layers of 2mm thickness of insulating fire brick steel plate 4 and 2 layers
The vermiculite antiseepage brick 5 of 65mm thickness, 4 material of steel plate are Q235B, and 4 size of steel plate can be determined for principle according to indeformable, apply
Working hour can splice.The upper surface of vermiculite antiseepage brick 5 is equipped with full graphitized cathode carbon block 9, and full graphitized cathode carbon block 9 and vermiculite are anti-
Seep the alumina layer 17 for being equipped with about 9mm thickness between brick between 5 and highly conductive anti-carburizi ng cathode steel bar 6 and vermiculite antiseepage brick 5.Entirely
Lower part is equipped with highly conductive anti-carburizi ng cathode steel bar 6 in graphitized cathode carbon block 9, and highly conductive anti-carburizi ng cathode steel bar 6 is that setting exists
Two highly conductive anti-carburizi ng cathode steel bars 6 on same straight line, and highly conductive anti-carburizi ng cathode steel bar 6 is located at vermiculite antiseepage brick 5
The upper surface of, 210mm is equipped between the lower part of the both side ends of full graphitized cathode carbon block 9 and highly conductive anti-carburizi ng cathode steel bar 6
Height × 150mm depth × 20mm thickness triangle insulating regions 18, triangle insulating regions 18 are interior to be filled with the (fire resisting of cathode steel bar ramming mass
Mud).The both ends lower part of full graphitized cathode carbon block 9 is equipped with 210mm high × 150mm depth × 740mm wide chamfering 16, chamfering 16
It is interior to be filled with cathode paste.Highly conductive rod iron paste 13 is equipped between the inside end of two highly conductive anti-carburizi ng cathode steel bars 6, height is led
Ceramic fiber blanket 12, highly conductive anti-carburizi ng are equipped between the inside end of electric anti-carburizi ng cathode steel bar 6 and highly conductive rod iron paste 13
Cathode steel bar 6 is equipped with highly conductive rod iron paste 13,6 liang of highly conductive anti-carburizi ng cathode steel bar between full graphitized cathode carbon block 9
Expose two sides and the top surface refractory wass and water glass brushed with 3mm thickness in the range of the outer 120mm of full graphitized cathode carbon block 9 in end
Glass mixture.The outside of full graphitized cathode carbon block 9 is equipped with cathode paste 10, and the outside of cathode paste 10 is equipped with side anti-seepage heat preservation
Layer.Side anti-seepage heat preservation layer includes the carbon block 14 that the side composite block of 10 upper outside of cathode paste is arranged in, side composite block it
The outside of carbon block 14 is equipped with the silicon nitride combined silicon carbide brick 11 of side composite block, the silicon nitride combined silicon carbide of side composite block
The bottom of brick 11 is equipped with the first vermiculite insulating brick 15, and the bottom of the first vermiculite insulating brick 15 is equipped with the ceramic beaverboard 1 of 20mm thickness,
The inside of ceramic beaverboard 1 is equipped with the eakleite composite adiabatic brick 2 of 60mm thickness, and the inside of eakleite composite adiabatic brick 2 is set
There are the second vermiculite insulating brick 7 of 65mm thickness, and the second vermiculite insulating brick 7, the highly conductive antiseepage carbon cathode of the first vermiculite insulating brick 15/
Folding shape space is formed between rod iron 6 and cathode paste 10, rolls over the antiseepage castable 8 that 75mm thickness is filled in shape space, antiseepage is poured
The compressive resistance of material feeding design is 8~20MPa, cannot be exceeded and too strong, prevents from generating inner lining structure excessive shear stress.
Connection hornblock between the big face of the upper lateral part of inner lining structure and facet using silicon nitride combined silicon carbide (wherein plus one layer of 10mm
Thick ceramic beaverboard), not only make corner structure more solid, also beneficial to forming furnace side and stretching one's legs.
A kind of preparation method of the full graphitization cathode inner lining structure of aluminium cell,
A, housing bottom pre-processes
The ceramic beaverboard 1 of bottom and eakleite composite adiabatic brick 2 in electrolytic bath shell body；
B, fire resisting Anti-seeping technology
The top of the eakleite composite adiabatic brick 2 is laid with insulating fire brick 3, steel plate 4 and vermiculite antiseepage brick 5, heat-insulated
Refractory brick 3, steel plate 4 and vermiculite antiseepage brick 5 are successively laid with from below to up；
C, cathode steel bar cathode carbon pieces are laid with
The highly conductive anti-carburizi ng cathode steel bar 6 forms one group by two, every group of highly conductive anti-carburizi ng cathode steel bar splicing
It forms, stitching portion is equipped with highly conductive rod iron paste 13, the highly conductive anti-carburizi ng cathode steel bar stitching portion and highly conductive rod iron paste 13
Between be equipped with ceramic fiber blanket 12；
D, carbon cathode blocks repairing type
Triangle insulation layer is equipped between the lower part of the full graphitized cathode carbon block 9 and highly conductive anti-carburizi ng cathode steel bar 6
18, triangle insulation layer 18 is interior to be filled with cathode steel bar ramming mass；The both ends lower part of the full graphitized cathode carbon block 9 is equipped with chamfering
16, chamfering 16 is interior to be filled with cathode paste 10, and the angle of chamfering 16 is 50 ~ 60 °；
E, anti-seepage heat preservation layer in side is filled
To the second vermiculite insulating brick 7, the cathode paste of the first vermiculite insulating brick 15 and highly conductive 6 side of anti-carburizi ng cathode steel bar
Cavity is formed between 10, is filled with antiseepage castable 8 in cavity.
In normal productive process, furnace bottom voltage drop control≤250mV of 100% full graphitization cathode electrolytic cell sets voltage
3.85 ~ 3.87V is kept, 3.92 ~ 3.95V of setting voltage compared with 50% graphite cathode electrolytic cell reduces 75mV ± 10mV；100% is complete
The aluminum water of graphitization cathode electrolytic cell, which is put down, is maintained at 21 ~ 23cm, insulation material thickness 18 ~ 20cm of holding, and electrolyte level 17 ~
19cm, 940 ~ 955 DEG C of electrolyte temperature, 5 ~ 10 DEG C of the degree of superheat, molecular proportion 2.5 ~ 2.7.Molecular proportion is sodium fluoride and aluminum fluoride
Molar ratio accordingly increases the (alkali metal such as lithium fluoride fluorination with the alkali metal fluorides content such as lithium fluoride raising in electrolyte
When object too high levels, molecular proportion can be more than that 2.7), and lithium fluoride content requirement is no more than 3.5%, keeps appropriate high to stablize
Liquidus temperature, the appropriate low degree of superheat and appropriate high electrolysis temperature.
It is applied widely, to raw material in addition, full graphitization cathode in the utility model is applicable in shot coke type or needle coke type
It is required that low.
Claims (9)
1. a kind of full graphitization cathode inner lining structure of aluminium cell, it is characterised in that:
Ceramic beaverboard (1) and eakleite composite adiabatic brick (2) including electrolytic cell housing bottom is arranged in；
The eakleite composite adiabatic brick (2) is equipped with insulating fire brick (3), steel plate (4) and vermiculite antiseepage brick (5)；
Full graphitized cathode carbon block (9) and the highly conductive anti-carburizi ng cathode steel bar (6) of multiple groups are equipped with above vermiculite antiseepage brick (5)；
Full graphitized cathode carbon block (9) is covered on highly conductive anti-carburizi ng cathode steel bar (6)；Highly conductive anti-carburizi ng cathode steel bar
(6) highly conductive rod iron paste (13) is equipped between full graphitized cathode carbon block (9)；
The outside of full graphitized cathode carbon block (9) is equipped with cathode paste (10), and the outside of cathode paste (10) is equipped with side anti-seepage heat preservation
Layer.
2. the full graphitization cathode inner lining structure of a kind of aluminium cell according to claim 1, it is characterised in that the hard silicon
The top of calcium stone composite adiabatic brick (2) is laid with insulating fire brick (3), steel plate (4) and vermiculite antiseepage brick (5), insulating fire brick
(3), steel plate (4) and vermiculite antiseepage brick (5) are successively laid with from below to up, steel plate (4) thickness 2mm.
3. the full graphitization cathode inner lining structure of a kind of aluminium cell according to claim 1, it is characterised in that the height is led
Electric anti-carburizi ng cathode steel bar (6) forms one group by two, and every group of highly conductive anti-carburizi ng cathode steel bar is spliced, and stitching portion is equipped with
Highly conductive rod iron pastes (13).
4. the full graphitization cathode inner lining structure of a kind of aluminium cell according to claim 3, it is characterised in that the height is led
Ceramic fiber blanket (12) are equipped between electric anti-carburizi ng cathode steel bar stitching portion and highly conductive rod iron paste (13).
5. the full graphitization cathode inner lining structure of a kind of aluminium cell according to claim 1, it is characterized in that being the side
Portion's anti-seepage heat preservation layer includes carbon block (14) of the setting in the side composite block of cathode paste (10) upper outside, the charcoal of side composite block
The outside of block (14) is equipped with the silicon nitride combined silicon carbide brick (11) of side composite block, the nitride combined with silicon carbide of side composite block
The bottom of silica brick (11) is equipped with the first vermiculite insulating brick (15), and the bottom of the first vermiculite insulating brick (15) is equipped with ceramic beaverboard
(1), the inside of ceramic beaverboard (1) is equipped with eakleite composite adiabatic brick (2), the inside of eakleite composite adiabatic brick (2)
Equipped with the second vermiculite insulating brick (7), the second vermiculite insulating brick (7), the first vermiculite insulating brick (15) and highly conductive antiseepage carbon cathode
Cavity is formed between the cathode paste (10) of rod iron (6) side, is filled with antiseepage castable (8) in cavity.
6. the full graphitization cathode inner lining structure of a kind of aluminium cell according to claim 1, it is characterized in that being described complete
Triangle insulation layer (18) are equipped between the lower part of graphitized cathode carbon block (9) and highly conductive anti-carburizi ng cathode steel bar (6), triangle is exhausted
Cathode steel bar ramming mass is filled in edge area (18).
7. the full graphitization cathode inner lining structure of a kind of aluminium cell according to claim 1, it is characterized in that being described complete
The both ends lower part of graphitized cathode carbon block (9) is equipped with chamfering (16), is filled with cathode paste (10) in chamfering (16), chamfering (16)
Angle is 50 ~ 60 °.
8. the full graphitization cathode inner lining structure of a kind of aluminium cell according to claim 1, it is characterized in that being the height
Expose full graphitized cathode carbon block (9) 120 ~ 270m outside, highly conductive anti-carburizi ng cathode steel in conductive anti-carburizi ng cathode steel bar (6) both ends
The refractory wass material of stick (6) two sides and top surface brush 3mm thickness, refractory wass material are mixed by SiC refractory wass and waterglass,
SiC refractory wass is mixed with waterglass by weight 3:1.
9. the full graphitization cathode inner lining structure of a kind of aluminium cell according to claim 1, it is characterized in that being described complete
Between graphitized cathode carbon block (9) and vermiculite antiseepage brick (5) and highly conductive anti-carburizi ng cathode steel bar (6) and vermiculite antiseepage brick
(5) alumina layer (17) are equipped between.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821217316.6U CN209144276U (en) | 2018-07-30 | 2018-07-30 | A kind of full graphitization cathode inner lining structure of aluminium cell |
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| CN201821217316.6U CN209144276U (en) | 2018-07-30 | 2018-07-30 | A kind of full graphitization cathode inner lining structure of aluminium cell |
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| CN209144276U true CN209144276U (en) | 2019-07-23 |
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| CN201821217316.6U Expired - Fee Related CN209144276U (en) | 2018-07-30 | 2018-07-30 | A kind of full graphitization cathode inner lining structure of aluminium cell |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN114088497A (en) * | 2021-12-02 | 2022-02-25 | 北京星航机电装备有限公司 | Preparation device and method of titanium alloy EBSD sample |
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2018
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN114088497A (en) * | 2021-12-02 | 2022-02-25 | 北京星航机电装备有限公司 | Preparation device and method of titanium alloy EBSD sample |
| CN114088497B (en) * | 2021-12-02 | 2023-09-19 | 北京星航机电装备有限公司 | Preparation device and method of titanium alloy EBSD sample |
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