CN109504982A - A kind of reduction large-sized prebaked cell for aluminum-reduction cathode assembling pressure drop operating procedure - Google Patents
A kind of reduction large-sized prebaked cell for aluminum-reduction cathode assembling pressure drop operating procedure Download PDFInfo
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- CN109504982A CN109504982A CN201811366401.3A CN201811366401A CN109504982A CN 109504982 A CN109504982 A CN 109504982A CN 201811366401 A CN201811366401 A CN 201811366401A CN 109504982 A CN109504982 A CN 109504982A
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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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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D19/00—Casting in, on, or around objects which form part of the product
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Abstract
The invention discloses a kind of reduction large-sized prebaked cell for aluminum-reduction cathode assembling pressure drop operating procedures, specifically includes the following steps: selection is aligned, cathode steel bar derusting, cleaning polishing, change the phosphorus pig iron, cathode carbon pieces and cathode steel bar heating, cathode phosphorus pig iron casting, cathode sets are cooling, the processing of rod iron minor insulation and thickener are pricked solid, quality testing, drop measurement, a kind of reduction large-sized prebaked cell for aluminum-reduction cathode assembling pressure drop operating procedure of the present invention, when aluminium electrolytic cell cathode is using phosphorus pig iron casting assembling mode, with lower iron-carbon contact drop, cathode fall drop can be significantly reduced, be conducive to save power consumption or improve current efficiency, compared with thickener pricks solid mode, advantageously reduce single slot expense, corresponding current efficiency is improved simultaneously, save corresponding power supply, improve economic benefit, structure novel, it is easy to operate , there is very high practicability, be suitble to be widely popularized.
Description
Technical field
The present invention relates to aluminium electrolytic cell cathode package technique field, specially a kind of reduction large-sized prebaked cell for aluminum-reduction
Cathode assembling pressure drop operating procedure.
Background technique
Electrolytic aluminium is exactly by being electrolysed obtained aluminium.Modern Aluminium Industry production melts salt electricity using cryolite-alumina
Solution.Molten cryolitic is solvent, and aluminium oxide is as solute, and using carbon body as anode, molten aluminum is passed through powerful as cathode
After direct current, at 950 DEG C -970 DEG C, it is electrochemically reacted, that is, is electrolysed on the two poles of the earth in electrolytic cell, and in aluminium cell
During cathode assembling due to Shanxi lead to graphite cathode thermal conductivity performance and thermal shock resistance performance it is good not as good as full graphitization cathode,
So the uniformity requirement of cathode blocks preheating temperature is higher when being poured graphite cathode, it is poured successful difficulty
Increase, corresponding power consumption is larger, influences corresponding economic benefit, and there are corresponding limitations.
Summary of the invention
The purpose of the present invention is to provide a kind of reduction large-sized prebaked cell for aluminum-reduction cathode assembling pressure drop operating procedure,
To solve the problems mentioned in the above background technology.
To achieve the above object, the invention provides the following technical scheme: a kind of reduction large-sized prebaked cell for aluminum-reduction is negative
Pole assembling pressure drop operating procedure, specifically includes the following steps:
S1: selection aligning: the cathode steel bar surface of selection must not have crack, scab, folding and impurity etc.；Pass through after selection
Straightener carries out corresponding straightening processing to cathode steel bar, guarantees that bending is not more than 2mm in rod iron overall length, distortion is little in overall length
In 3mm；
S2: cathode steel bar derusting: being derusted to cathode steel bar using pickling, ball blast or blasting treatment after straightening processing,
Cathode steel bar surface is set to expose silver gray metallic luster；
S2: cleaning polishing: successively cleaning the surface of rod iron using plasma water, ethyl alcohol after derusting accordingly, protects
Card rod iron its surface after derusting is not stained with dust greasy dirt, while adding bowl-type wire brush to destroy steel with hand grinder after pickling
Passivation layer on stick, and finish center line；
S4: changing the phosphorus pig iron: phosphorus pig iron being put into intermediate frequency furnace and is heated, and carries out the fusing of the phosphorus pig iron and composition adjustment work, guarantees
The final heating temperature of phosphorus molten pig iron is 1450 ± 50 DEG C, and cast temperature scope control is at 1400 ± 30 DEG C；
S5: clean, guarantor cathode carbon pieces and cathode steel bar heating: will be purged in cathode carbon pieces steel bar trough with compressed air and banister brush
Free from dust and sundries are demonstrate,proved, alumina silicate circle sennit is wrapped in two ends of cathode steel bar scribing line after cleaning out, utilization is dedicated
Suspender handling and the formulation position for being put into cathode carbon pieces steel bar trough.Rod iron longitudinal center line and carbon block steel bar trough longitudinal center line are flat
Inaccurate 1 ‰ more than charcoal block length of row degree deviation, it is pre-assembled after rod iron bottom surface and rod iron bottom surface distance controlling 15
±1mm；
S6: cathode phosphorus pig iron casting: finishing to carbon cathode blocks heating, and the phosphorus pig iron melts and prepares in place, stopping heating, and moves
Except heating mantles, pour point position is located at every group of circle sennit of rod iron two apart from middle position, accordingly puts phosphorus pig iron water conservancy diversion frame；In
To ferrophosphorus sampling and thermometric in frequency furnace, then with two-maing ladle is transported the phosphorus pig iron and started to cast；Casting process should be rapid, meanwhile, guarantee iron
Water is completely filled with steel bar trough both side ends；When casting, molten iron should directly be poured in the steel bar trough of rod iron side, can not cast in yin
Pole carbon block surface；The phosphorus pig iron chemical examination frequency is related to ingredient, and after ingredient meets the requirements and stablizes, sample examination is primary weekly；
S7: cathode sets are cooling: after pouring, must not be placed in workshop channel two sides, avoid making cathode sets because of external condition
Fast cooling；It is lower than 300 DEG C to cathode carbon pieces side temperature, insulation blanket can be removed and continue to place it on casting platform,
It is hoisted to cooled cathode station after keeping the temperature at least 2.5 hours, removes removal silicon again after continuing cool to temperature lower than 100 DEG C
Sour aluminium circle sennit；
S8: the processing of rod iron minor insulation and thickener are pricked solid: phosphorus pig iron casting complete and it is completely cooling after, by the round sennit of orthosilicic acid aluminium
It is removed with pyroceram fibre felt, by rod iron insulating regions fill silicon carbide ramming in cathode carbon pieces project shown in drawing
Material brushes carbonization ganister on the outside of cathode carbon pieces projection.The space of filling ceramic beaverboard is first reserved at middle seam position with mold,
Again with gap space in thickener filling residue, thickener pricks solid density construction by normal, and suggests having beaten in three times；Middle seam thickener tamping
Afterwards, mold is taken out, fills in ceramic beaverboard；Under finished product carbon cathode blocks before slot, using dedicated carbon block turning tool, by charcoal
Block group overturns 180 °, and the handling of entire assembling process cathode carbon pieces and rod iron uses specific purpose tool, avoids damage to carbon cathode blocks；
S9: quality testing: detecting the carbon cathode blocks appearance after the completion of casting accordingly, guarantees that cathode carbon pieces cannot have
Casting crackle, while guaranteeing that other defects meet YS/T623-2012 high graphite cathode carbon pieces standard regulation used for aluminium electrolysis, nothing
The defects of rod iron deforms, middle part charcoal paste are closely knit without loose, rough defect；
S10: drop measurement: after carbon block is cooled to room temperature, carrying out drop measurement, with face cathode carbon pieces centre and the cathode steel of casting
Stick bared end passes to 200A direct current with special measurement equipment for the two poles of the earth, and records corresponding measured value, counts after measurement
4 average voltages are calculated, before casting cathode sets packaging, measured value mark is write on to the cathode steel bar end side at cathode sets both ends
Face.
Preferably, the carbon in the S4 phosphorus pig iron be 3.0-3.5%, element silicon 2.8-3.3%, manganese element 0.4-
0.9%, P elements 0.6-0.9%, element sulphur are lower than≤0.1%.
Preferably, cathode carbon pieces end rod iron refractory wass and three bread of waterglass mixture are wrapped up in and are wrapped up in S5
With a thickness of 3mm.
Preferably, to guarantee cathode sets lengthwise dimension tolerance after casting in S5, rod iron prepackage is answered when positioning
Consider that there are certain flexible surpluses；In every group of rod iron and the circle sennit of cathode two apart from middle position, smeared with inoxidzable coating
Surface carries out anti-oxidation processing.
Preferably, the heating process of carbon cathode blocks can seriously affect the success rate of cathode assembling in S5, therefore, it is necessary to
It heats up in strict accordance with defined heating curve；Rod iron and carbon block are heated on cathode sets preheater: the heating of rod iron
Temperature is not less than 650 DEG C, should specifically be determined according to casting process；Carbon block head temperature is not less than 550 ± 30 DEG C, on the side of carbon block
Portion heats mean temperature and is not less than 480 DEG C ± 30 DEG C, and the two, which must simultaneously meet, to cast.
Preferably, after casting in S6, the excess surface phosphorus pig iron need to be rooted out with spades immediately, and at carbon block group end
Portion and top covering and heat insulating blanket, are suitably kept the temperature；1 hour domestic demand of the carbon cathode blocks finished at cooling initial stage of casting has specially
People makes an inspection tour, and by irradiating and whether having cracking sound, the corresponding following figure checks carbon block, and whether there are cracks, and such as discovery is identified with chalk at once
Out position.
Compared with prior art, the beneficial effects of the present invention are: a kind of reduction large-sized prebaked cell for aluminum-reduction of the present invention
Cathode assembling pressure drop operating procedure has lower iron-carbon contact when aluminium electrolytic cell cathode is using phosphorus pig iron casting assembling mode
Pressure drop can significantly reduce cathode fall drop, be conducive to save power consumption or improve current efficiency, compared with thickener pricks solid mode,
Single slot expense is advantageously reduced, while improving corresponding current efficiency, saves corresponding power supply, improves economic benefit, structure
Novelty, it is easy to operate, there is very high practicability, be suitble to be widely popularized.
Specific embodiment
The technical scheme in the embodiments of the invention will be clearly and completely described below, it is clear that described implementation
Example is only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, this field is common
Technical staff's every other embodiment obtained without making creative work belongs to the model that the present invention protects
It encloses.
The present invention provides a kind of technical solution: a kind of reduction large-sized prebaked cell for aluminum-reduction cathode assembling pressure drop operative employee
Skill, specifically includes the following steps:
S1: selection aligning: the cathode steel bar surface of selection must not have crack, scab, folding and impurity etc.；Pass through after selection
Straightener carries out corresponding straightening processing to cathode steel bar, guarantees that bending is not more than 2mm in rod iron overall length, distortion is little in overall length
In 3mm；
S2: cathode steel bar derusting: being derusted to cathode steel bar using pickling, ball blast or blasting treatment after straightening processing,
Cathode steel bar surface is set to expose silver gray metallic luster；
S2: cleaning polishing: successively cleaning the surface of rod iron using plasma water, ethyl alcohol after derusting accordingly, protects
Card rod iron its surface after derusting is not stained with dust greasy dirt, while adding bowl-type wire brush to destroy steel with hand grinder after pickling
Passivation layer on stick, and finish center line；
S4: changing the phosphorus pig iron: phosphorus pig iron being put into intermediate frequency furnace and is heated, and carries out the fusing of the phosphorus pig iron and composition adjustment work, guarantees
The final heating temperature of phosphorus molten pig iron is 1450 ± 50 DEG C, and cast temperature scope control is at 1400 ± 30 DEG C；
S5: clean, guarantor cathode carbon pieces and cathode steel bar heating: will be purged in cathode carbon pieces steel bar trough with compressed air and banister brush
Free from dust and sundries are demonstrate,proved, alumina silicate circle sennit is wrapped in two ends of cathode steel bar scribing line after cleaning out, utilization is dedicated
Suspender handling and the formulation position for being put into cathode carbon pieces steel bar trough.Rod iron longitudinal center line and carbon block steel bar trough longitudinal center line are flat
Inaccurate 1 ‰ more than charcoal block length of row degree deviation, it is pre-assembled after rod iron bottom surface and rod iron bottom surface distance controlling 15
±1mm；
S6: cathode phosphorus pig iron casting: finishing to carbon cathode blocks heating, and the phosphorus pig iron melts and prepares in place, stopping heating, and moves
Except heating mantles, pour point position is located at every group of circle sennit of rod iron two apart from middle position, accordingly puts phosphorus pig iron water conservancy diversion frame；In
To ferrophosphorus sampling and thermometric in frequency furnace, then with two-maing ladle is transported the phosphorus pig iron and started to cast；Casting process should be rapid, meanwhile, guarantee iron
Water is completely filled with steel bar trough both side ends；When casting, molten iron should directly be poured in the steel bar trough of rod iron side, can not cast in yin
Pole carbon block surface；The phosphorus pig iron chemical examination frequency is related to ingredient, and after ingredient meets the requirements and stablizes, sample examination is primary weekly；
S7: cathode sets are cooling: after pouring, must not be placed in workshop channel two sides, avoid making cathode sets because of external condition
Fast cooling；It is lower than 300 DEG C to cathode carbon pieces side temperature, insulation blanket can be removed and continue to place it on casting platform,
It is hoisted to cooled cathode station after keeping the temperature at least 2.5 hours, removes removal silicon again after continuing cool to temperature lower than 100 DEG C
Sour aluminium circle sennit；
S8: the processing of rod iron minor insulation and thickener are pricked solid: phosphorus pig iron casting complete and it is completely cooling after, by the round sennit of orthosilicic acid aluminium
It is removed with pyroceram fibre felt, by rod iron insulating regions fill silicon carbide ramming in cathode carbon pieces project shown in drawing
Material brushes carbonization ganister on the outside of cathode carbon pieces projection.The space of filling ceramic beaverboard is first reserved at middle seam position with mold,
Again with gap space in thickener filling residue, thickener pricks solid density construction by normal, and suggests having beaten in three times；Middle seam thickener tamping
Afterwards, mold is taken out, fills in ceramic beaverboard；Under finished product carbon cathode blocks before slot, using dedicated carbon block turning tool, by charcoal
Block group overturns 180 °, and the handling of entire assembling process cathode carbon pieces and rod iron uses specific purpose tool, avoids damage to carbon cathode blocks；
S9: quality testing: detecting the carbon cathode blocks appearance after the completion of casting accordingly, guarantees that cathode carbon pieces cannot have
Casting crackle, while guaranteeing that other defects meet YS/T623-2012 high graphite cathode carbon pieces standard regulation used for aluminium electrolysis, nothing
The defects of rod iron deforms, middle part charcoal paste are closely knit without loose, rough defect；
S10: drop measurement: after carbon block is cooled to room temperature, carrying out drop measurement, with face cathode carbon pieces centre and the cathode steel of casting
Stick bared end passes to 200A direct current with special measurement equipment for the two poles of the earth, and records corresponding measured value, counts after measurement
4 average voltages are calculated, before casting cathode sets packaging, measured value mark is write on to the cathode steel bar end side at cathode sets both ends
Face.
Specifically, the carbon in the S4 phosphorus pig iron is 3.0-3.5%, element silicon 2.8-3.3%, manganese element 0.4-
0.9%, P elements 0.6-0.9%, element sulphur are lower than≤0.1%.
Specifically, cathode carbon pieces end rod iron refractory wass and three bread of waterglass mixture are wrapped up in and are wrapped up in S5
With a thickness of 3mm.
Specifically, to guarantee cathode sets lengthwise dimension tolerance after casting in S5, rod iron prepackage is answered when positioning
Consider that there are certain flexible surpluses；In every group of rod iron and the circle sennit of cathode two apart from middle position, smeared with inoxidzable coating
Surface carries out anti-oxidation processing.
Specifically, the heating process of carbon cathode blocks can seriously affect the success rate of cathode assembling in S5, therefore, it is necessary to
It heats up in strict accordance with defined heating curve；Rod iron and carbon block are heated on cathode sets preheater: the heating of rod iron
Temperature is not less than 650 DEG C, should specifically be determined according to casting process；Carbon block head temperature is not less than 550 ± 30 DEG C, on the side of carbon block
Portion heats mean temperature and is not less than 480 DEG C ± 30 DEG C, and the two, which must simultaneously meet, to cast.
Specifically, the excess surface phosphorus pig iron need to be rooted out with spades immediately, and after casting in S6 at carbon block group end
Portion and top covering and heat insulating blanket, are suitably kept the temperature；1 hour domestic demand of the carbon cathode blocks finished at cooling initial stage of casting has specially
People makes an inspection tour, and by irradiating and whether having cracking sound, the corresponding following figure checks carbon block, and whether there are cracks, and such as discovery is identified with chalk at once
Out position.
A kind of reduction large-sized prebaked cell for aluminum-reduction cathode assembling pressure drop operating procedure of the present invention, aluminium electrolytic cell cathode are adopted
When being poured assembling mode with the phosphorus pig iron, there is lower iron-carbon contact drop, cathode fall drop can be significantly reduced, be conducive to
It saves power consumption or improves current efficiency, compared with thickener pricks solid mode, advantageously reduce single slot expense, while improving corresponding electricity
Efficiency is flowed, corresponding power supply is saved, improves economic benefit, structure novel is easy to operate, has very high practicability, is suitble to
It is widely popularized.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (6)
1. a kind of reduction large-sized prebaked cell for aluminum-reduction cathode assembling pressure drop operating procedure, it is characterised in that: specifically include with
Lower step:
S1: selection aligning: the cathode steel bar surface of selection must not have crack, scab, folding and impurity etc.；Pass through after selection
Straightener carries out corresponding straightening processing to cathode steel bar, guarantees that bending is not more than 2mm in rod iron overall length, distortion is little in overall length
In 3mm；
S2: cathode steel bar derusting: being derusted to cathode steel bar using pickling, ball blast or blasting treatment after straightening processing,
Cathode steel bar surface is set to expose silver gray metallic luster；
S2: cleaning polishing: successively cleaning the surface of rod iron using plasma water, ethyl alcohol after derusting accordingly, protects
Card rod iron its surface after derusting is not stained with dust greasy dirt, while adding bowl-type wire brush to destroy steel with hand grinder after pickling
Passivation layer on stick, and finish center line；
S4: changing the phosphorus pig iron: phosphorus pig iron being put into intermediate frequency furnace and is heated, and carries out the fusing of the phosphorus pig iron and composition adjustment work, guarantees
The final heating temperature of phosphorus molten pig iron is 1450 ± 50 DEG C, and cast temperature scope control is at 1400 ± 30 DEG C；
S5: clean, guarantor cathode carbon pieces and cathode steel bar heating: will be purged in cathode carbon pieces steel bar trough with compressed air and banister brush
Free from dust and sundries are demonstrate,proved, alumina silicate circle sennit is wrapped in two ends of cathode steel bar scribing line after cleaning out, utilization is dedicated
Suspender handling and the formulation position for being put into cathode carbon pieces steel bar trough；Rod iron longitudinal center line and carbon block steel bar trough longitudinal center line are flat
Inaccurate 1 ‰ more than charcoal block length of row degree deviation, it is pre-assembled after rod iron bottom surface and rod iron bottom surface distance controlling 15
±1mm；
S6: cathode phosphorus pig iron casting: finishing to carbon cathode blocks heating, and the phosphorus pig iron melts and prepares in place, stopping heating, and moves
Except heating mantles, pour point position is located at every group of circle sennit of rod iron two apart from middle position, accordingly puts phosphorus pig iron water conservancy diversion frame；In
To ferrophosphorus sampling and thermometric in frequency furnace, then with two-maing ladle is transported the phosphorus pig iron and started to cast；Casting process should be rapid, meanwhile, guarantee iron
Water is completely filled with steel bar trough both side ends；When casting, molten iron should directly be poured in the steel bar trough of rod iron side, can not cast in yin
Pole carbon block surface；The phosphorus pig iron chemical examination frequency is related to ingredient, and after ingredient meets the requirements and stablizes, sample examination is primary weekly；
S7: cathode sets are cooling: after pouring, must not be placed in workshop channel two sides, avoid making cathode sets because of external condition
Fast cooling；It is lower than 300 DEG C to cathode carbon pieces side temperature, insulation blanket can be removed and continue to place it on casting platform,
It is hoisted to cooled cathode station after keeping the temperature at least 2.5 hours, removes removal silicon again after continuing cool to temperature lower than 100 DEG C
Sour aluminium circle sennit；
S8: the processing of rod iron minor insulation and thickener are pricked solid: phosphorus pig iron casting complete and it is completely cooling after, by the round sennit of orthosilicic acid aluminium
It is removed with pyroceram fibre felt, by rod iron insulating regions fill silicon carbide ramming in cathode carbon pieces project shown in drawing
Material brushes carbonization ganister on the outside of cathode carbon pieces projection；The space of filling ceramic beaverboard is first reserved at middle seam position with mold,
Again with gap space in thickener filling residue, thickener pricks solid density construction by normal, and suggests having beaten in three times；Middle seam thickener tamping
Afterwards, mold is taken out, fills in ceramic beaverboard；Under finished product carbon cathode blocks before slot, using dedicated carbon block turning tool, by charcoal
Block group overturns 180 °, and the handling of entire assembling process cathode carbon pieces and rod iron uses specific purpose tool, avoids damage to carbon cathode blocks；
S9: quality testing: detecting the carbon cathode blocks appearance after the completion of casting accordingly, guarantees that cathode carbon pieces cannot have
Casting crackle, while guaranteeing that other defects meet YS/T623-2012 high graphite cathode carbon pieces standard regulation used for aluminium electrolysis, nothing
The defects of rod iron deforms, middle part charcoal paste are closely knit without loose, rough defect；
S10: drop measurement: after carbon block is cooled to room temperature, carrying out drop measurement, with face cathode carbon pieces centre and the cathode steel of casting
Stick bared end passes to 200A direct current with special measurement equipment for the two poles of the earth, and records corresponding measured value, counts after measurement
4 average voltages are calculated, before casting cathode sets packaging, measured value mark is write on to the cathode steel bar end side at cathode sets both ends
Face.
2. a kind of reduction large-sized prebaked cell for aluminum-reduction cathode assembling pressure drop operating procedure according to claim 1,
Be characterized in that: the carbon in the S4 phosphorus pig iron is 3.0-3.5%, element silicon 2.8-3.3%, manganese element 0.4-0.9%,
P elements are 0.6-0.9%, element sulphur is lower than≤0.1%.
3. a kind of reduction large-sized prebaked cell for aluminum-reduction cathode assembling pressure drop operating procedure according to claim 1,
Be characterized in that: in S5 cathode carbon pieces end rod iron refractory wass and three bread of waterglass mixture wrap up in and wrap up with a thickness of
3mm。
4. a kind of reduction large-sized prebaked cell for aluminum-reduction cathode assembling pressure drop operating procedure according to claim 1,
Be characterized in that: to guarantee cathode sets lengthwise dimension tolerance after casting in S5, rod iron prepackage is considered as staying when positioning
There is certain flexible surplus；In every group of rod iron and the circle sennit of cathode two apart from middle position, surface is smeared with inoxidzable coating, into
The anti-oxidation processing of row.
5. a kind of reduction large-sized prebaked cell for aluminum-reduction cathode assembling pressure drop operating procedure according to claim 1,
Be characterized in that: the heating process of carbon cathode blocks can seriously affect the success rate of cathode assembling in S5, therefore, it is necessary to strictly press
It heats up according to defined heating curve；Rod iron and carbon block are heated on cathode sets preheater: the heating temperature of rod iron is not
Lower than 650 DEG C, should specifically be determined according to casting process；Carbon block head temperature is not less than 550 ± 30 DEG C, and the upper lateral part of carbon block heats
Mean temperature is not less than 480 DEG C ± 30 DEG C, and the two, which must simultaneously meet, to cast.
6. a kind of reduction large-sized prebaked cell for aluminum-reduction cathode assembling pressure drop operating procedure according to claim 1,
Be characterized in that: in S6 cast after, the excess surface phosphorus pig iron need to be rooted out with spades immediately, and carbon block group end and on
Portion's covering and heat insulating blanket, is suitably kept the temperature；1 hour domestic demand of the carbon cathode blocks finished at cooling initial stage of casting has special messenger to patrol
Depending on by irradiating and whether having cracking sound, the corresponding following figure checks carbon block, and whether there are cracks, and such as discovery identifies position with chalk at once
It sets.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113953489A (en) * | 2021-10-26 | 2022-01-21 | 阿坝铝厂 | Cathode assembly detection method |
| CN114178506A (en) * | 2021-12-03 | 2022-03-15 | 内蒙古大唐国际呼和浩特铝电有限责任公司 | Method for improving finished product anode casting qualification rate |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1598066A (en) * | 2004-08-12 | 2005-03-23 | 贵阳铝镁设计研究院 | Process for mfg. premelting anode aluminium electrolytic tank |
| CN102002732A (en) * | 2010-12-02 | 2011-04-06 | 云南云铝涌鑫铝业有限公司 | Preparation method of phosphorus pig iron cathode for aluminum electrolysis |
| CN102416461A (en) * | 2011-12-09 | 2012-04-18 | 云南铝业股份有限公司 | Process for casting phosphorus cast iron to carbon graphite cathode carbon blocks |
| CN102492963A (en) * | 2011-12-09 | 2012-06-13 | 云南铝业股份有限公司 | Assembling method capable of preventing cracks of graphite phosphorus pig iron cast carbon blocks |
| CN102534667A (en) * | 2010-12-27 | 2012-07-04 | 贵阳铝镁设计研究院有限公司 | Method for reducing horizontal current of electrolytic bath molten aluminum layer and cathode carbon block assembly |
| CN106493341A (en) * | 2016-12-15 | 2017-03-15 | 贵阳铝镁设计研究院有限公司 | Aluminium electrolysis cathode carbon block phosphorus pig iron casting unit and casting method |
| CN107326398A (en) * | 2017-06-15 | 2017-11-07 | 山西亮宇炭素有限公司 | A kind of cathode carbon pieces component and its preparation technology |
| CN108060431A (en) * | 2017-12-05 | 2018-05-22 | 聊城信源集团有限公司 | A kind of 50% high graphite cathode carbon block and the method for cathode steel bar assembling |
| CN108221002A (en) * | 2017-12-06 | 2018-06-29 | 中国铝业股份有限公司 | A kind of assemble method of phosphorus-containing pig iron for electrolyzing aluminium casting cathode |
-
2018
- 2018-11-16 CN CN201811366401.3A patent/CN109504982A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1598066A (en) * | 2004-08-12 | 2005-03-23 | 贵阳铝镁设计研究院 | Process for mfg. premelting anode aluminium electrolytic tank |
| CN102002732A (en) * | 2010-12-02 | 2011-04-06 | 云南云铝涌鑫铝业有限公司 | Preparation method of phosphorus pig iron cathode for aluminum electrolysis |
| CN102534667A (en) * | 2010-12-27 | 2012-07-04 | 贵阳铝镁设计研究院有限公司 | Method for reducing horizontal current of electrolytic bath molten aluminum layer and cathode carbon block assembly |
| CN102416461A (en) * | 2011-12-09 | 2012-04-18 | 云南铝业股份有限公司 | Process for casting phosphorus cast iron to carbon graphite cathode carbon blocks |
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| CN108221002A (en) * | 2017-12-06 | 2018-06-29 | 中国铝业股份有限公司 | A kind of assemble method of phosphorus-containing pig iron for electrolyzing aluminium casting cathode |
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