CN106757164B - A kind of aluminum electrolyzing cell used anode covering method and device - Google Patents
A kind of aluminum electrolyzing cell used anode covering method and device Download PDFInfo
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- CN106757164B CN106757164B CN201710060450.3A CN201710060450A CN106757164B CN 106757164 B CN106757164 B CN 106757164B CN 201710060450 A CN201710060450 A CN 201710060450A CN 106757164 B CN106757164 B CN 106757164B
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- anode
- cladding system
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- cell used
- covering
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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
- C25C3/12—Anodes
Abstract
The invention discloses a kind of aluminum electrolyzing cell used anode covering method and devices, using three layers of covering above the anode (1), upwards successively from anode (1) top surface are as follows: first layer be antioxidant layer (4), the second layer for being stacked above anode be gas blanket, third layer is anode cladding system (2)；Middle seam between two rows of anodes (1) is filled using anti-oxidation coating material layer (5) is kept the temperature；Side cladding system (3) are equipped between anode (1) outside on electrolytic cell side insulating layer (6).Technical solution of the present invention is on the basis of guaranteeing the heat preservation of existing electrolytic cell covering, anti-oxidation function, it is possible to reduce constructs the construction investment and operating cost of the systems such as the broken of existing mulch, conveying, charging；The crust breaking for maintaining existing mulch production, masonry, the workload for receiving the operations such as side and time can be reduced；Mulch circular treatment expense and raw material fund can be reduced to overstock etc..
Description
Technical field
The invention belongs to technical field of aluminum electrolysis, and in particular to a kind of reduction aluminum electrolysis applied in production run
Cost and energy-saving anode covering method and complexes.
Background technique
Improve that aluminium electroloysis equipment technology is horizontal in production run, be realize energy saving of electrolytic production of aluminium, consumption reduction, emission reduction pass
Key.For existing aluminium cell in production run, the ingredient of anode-covered material layer is the electrolyte granular and oxygen of different grain size size
Change the mixed material of alumina particles, coating material layer mainly plays a part of to keep the temperature and prevent anode surface from aoxidizing, and mulch is mainly by day
Vehicle is added and is manually built.
In electrolysis production link now, operational sequence necessary to change poles almost becomes every electrolytic cell daily, and from
Change poles preparation starts, and to addition covering discharge position, takes about 30min.During change poles, there are steps some in this way, such as: quasi-
The loosening mulch of anode surface is raked off, for changing before anode scrap in newly extremely upper addition mulch etc..
Meanwhile electrolytic cell production run requires fine-grained management further, in the addition of anode-covered material, each factory is accordingly advised
The model proportion of mulch each component, the requirement of partial size, management of thickness etc..However, more artificial participations make actually to hold
Row process is difficult to the monitoring of quantification of targets and implements, each workshop section, each area the presentation attributes of each electrolytic cell be difficult to mark
Standardization.
In addition, change also occurs for the heat condition at different location with the operation of production and the continuous consumption of anode, and
The more difficult adjustment for accomplishing to cover anode of existing anode coverage mode.
Due to the strong corrosive of electrolyte, existing some anode heat-insulation cladding systems, which will receive it, to be influenced and is difficult to ensure
The longer service life period.
Summary of the invention
The object of the present invention is to provide a kind of aluminum electrolyzing cell used anode covering method and devices, to overcome the aforementioned prior art
Present in deficiency.
The technical scheme is that such:
The present invention is such a aluminum electrolyzing cell used anode covering method, using three layers of covering above anode, from anode
Top surface is upwards successively are as follows: first layer be antioxidant layer, the second layer for being stacked above anode be gas blanket, third layer is sun
Pole cladding system；Middle seam between two rows of anodes is filled using anti-oxidation coating material layer is kept the temperature；In electrolytic cell side insulating layer it
Side cladding system is equipped between on the outside of upper and anode.
Wherein, anode cladding system is made of the above Material cladding of one or two layers；When using two layers or more Material cladding
When structure, external working lining is constituted using sizing refractory material, and internal and top working lining is resistance to using sizing or indefinite form
Fiery thermal insulation material is constituted；Anode cladding system is the single anode cladding system or the bianode monolith sun of covering for covering single anode
Pole cladding system.Gas blanket is located at below anode cladding system, to avoid anode cladding system in electrolytic process melt it is straight
Contact；The height of gas blanket is in 0~200mm range.Between anode cladding system and anode cladding system, side cladding system
Gap alumina powder, skull powder, ceramic fiber cotton, asbestos cloth or heat preservation rope filling between the cladding system of side.Side
Cladding system is similar with anode cladding system, effect is identical, and material is substantially identical.It is the position placed that it, which is distinguished only,
It is different.Anode cladding system is placed in right above anode, and side cladding system is placed on electrolytic cell, one week of anode periphery
Circle.
The present invention uses such a aluminum electrolyzing cell used anode cladding system, including what is set gradually upwards from anode top surface
Antioxidant layer, gas blanket and anode cladding system；When antioxidant layer refers to electrolytic cell change poles, paving is dispersed in anode upper surface
One layer of graininess or granular material, material be mainly made of electrolyte broken material, alumina powder.Its effect first is that preventing sun
The excessive contact of pole and air and be oxidized.
Anode cladding system is adjusted at a distance from anode top surface by height adjuster；This refers to can be with for height adjuster
Anode cladding system is set to carry out a mobile component up and down.Such function is made it have in patent.Its structure can be
An easy structure being made of bolt, nut makes it rise or fall by tightening or unclamping；It can also similar jack type
Jacking apparatus；It can also be the modes such as cord holder, turnbuckle.
Anode cladding system be equipped with for avoid its when in use between anode rod or anode girder steel it is mutually dry
The hole related to, with flexible flame-proof thermal insulation material material filling between the hole and anode girder steel.For single anode electrolytic tank, one group of anode can
Corresponding one piece of complete anode cladding system；One group of anode can also be covered by 2 pieces or 2 pieces or more of anode cladding system docking
Lid.
Further, anode cladding system is equipped with for anode cladding system to be hung on to the lifting lug on anode girder steel.
One side or periphery of anode cladding system are provided with flange.
The principle of the present invention and technical effect:
Technical solution of the present invention can subtract on the basis of guaranteeing the heat preservation of existing electrolytic cell covering, anti-oxidation function
The construction investment and operating cost of the systems such as the broken of existing mulch, conveying, charging are constructed less；It can reduce and maintain existing to cover
Crust breaking, masonry, the workload for receiving the operations such as side and the time of lid material production；Mulch circular treatment expense and former material can be reduced
Material fund is overstock；Improve heat recovery and utilization rate, the anodic cladding system on anode scrap can be directly used for it is new extremely on, reduce
Thermal losses, while new pole can be preheated.
Detailed description of the invention
Fig. 1 is aluminum electrolyzing cell used anode covering method floor map；
Fig. 2 is aluminum electrolyzing cell used anode covering method schematic diagram；
Fig. 3 is anode cladding system composition figure；
Fig. 4 is anode cladding system structural schematic diagram；
Fig. 5 is single anode monoblock type cladding system schematic diagram；
Fig. 6 is single anode monoblock type cladding system figure；
Fig. 7 is the box-like cladding system schematic diagram of single anode unit；
Fig. 8 is the box-like cladding system figure of single anode unit.
Description of symbols: 1- anode, 2- anode cladding system, the side 3- cladding system, 4- antioxidant layer, 5- are protected
The anti-oxidation coating material layer of temperature, 6- electrolytic cell side insulating layer, the outside 7- working lining, the top 8- working lining, 9- height adjuster,
The hole 10-, 11- anode rod, 12- anode girder steel, 13- lifting lug, 14- flange.
Specific embodiment
The present invention is described in further detail with reference to the accompanying drawings and examples.
As Figure 1-Figure 8, existing for substituting the technical scheme is that three layers of covering are arranged above anode 1
The production method covered using alumina powder and skull powder mixed powder.Covering method be it is such, it is upward from 1 top surface of anode
Successively are as follows: first layer is the antioxidant layer 4 for being stacked at the top of anode 1, the second layer is gas blanket, third layer is anode covering
Device 2；Middle seam between two rows of anodes 1 uses keeps the temperature anti-oxidation coating material layer 5 on a small quantity；The covering method on anode electrolytic cell periphery
For on electrolytic cell side insulating layer 6 on the outside of anode between configure side cladding system 3.
As shown in Figs. 1-2, anode cladding system 2 is made of one or more layers Material cladding.When using multi-layer compound structure
When, the sizing refractory material that high intensity, refractoriness and good corrosion resistance may be selected in external working lining 7 is constituted, it is internal and on
The sizing of good heat preservation performance may be selected in portion's working lining 8 or indefinite form flame-proof thermal insulation material is constituted；Fig. 1 Anodic cladding system 2 is single
Anode cladding system can also be designed to cover bianode monolith anode cladding system.
Gas blanket is located at the lower section of anode cladding system 2, to avoid anode cladding system 2 in electrolytic process melt it is direct
Contact.The height of gas blanket is in 0~200mm range.
Sky between anode cladding system 2 and anode cladding system 2, between side cladding system 3 and side cladding system 3
Gap can be filled with small amounts aluminium powder or skull powder, it is also possible to flexible flame-proof thermal insulation material material such as: ceramic fiber cotton, asbestos cloth,
The fillings such as heat preservation rope；
As shown in figure 4, anode cladding system 2 is located at the top of anode 1, in entire anode 1 at a distance from 1 top surface of anode
It can be adjusted above and below in life cycle.Regulative mode can be realized by configuration height adjuster 9.
As viewed in figures 5-8, for single anode electrolytic tank, one group of anode can correspond to one piece of complete anode cladding system 2；One
Group anode can also be covered by 2 pieces or 2 pieces or more of the docking of anode cladding system 2.
As shown in figure 5, being provided with hole 10 on anode cladding system 2.Hole 10 can avoid anode cladding system when in use 2,
It is interfered with anode rod 11,12 beam of anode girder steel, between anode cladding system hole and anode girder steel, flexible fire resisting can be used
Thermal insulation material material is such as: ceramic fiber cotton, asbestos cloth, heat preservation rope filling.
As shown in figure 4, being provided with lifting lug 13 on anode cladding system 2.Anode cladding system 2 can be hung on sun by lifting lug 13
On pole girder steel 12.
As shown in figure 3, one side or periphery of anode cladding system 2 are provided with flange 14.
The principle of the present invention:
Due to the strong corrosive of electrolyte, anode heat-insulation cladding system 2 should not directly be contacted with electrolyte.And in practical life
Produce operation in, especially change poles a few days ago, since anode height has reduced, but electrolyte and molten aluminum composition melt height become
Change less, if anode heat-insulation cladding system 2 is directly placed at 1 surface of anode or is closer therewith, it will make anode heat-insulation
Cladding system 2 and electrolyte transition contact are to corrode anode heat-insulation cladding system and reduce its service life；Secondly, being electrolysed
In production run, the presence of the discharge of water electrolytic gas and melt fluctuation, when the position of anode heat-insulation cladding system 2 is not also easy at that time
The generation of corrosion is touched and caused with electrolyte, therefore, the gas blanket in the present invention is located at below anode cladding system 2, with every
Exhausted anode cladding system 2 is contacted with the direct of melt in electrolytic process.The height of gas blanket is in 0~200mm range.
Within entire period anode life, with the operation of production and the continuous consumption of anode, anode height is gradually decreased,
Change also occurs for the heat condition at difference electrolysis groove location, and height adjuster 9 is arranged to adjust different demands condition in the present invention
Lower anode cladding system 2 is at a distance from 1 top surface of anode.
Implementation steps of the invention are as follows:
1, one layer of antioxidant layer 4,1~5cm of thickness are laid on the new anode that will be replaced；
2, anode cladding system 2 is placed in 4 top of antioxidant layer；Meanwhile it being covered in antioxidant layer 4 with anode
By height adjuster 9 to retain certain gap between lid arrangement 2；
3, with alumina powder fill steel pawl between stitch and stitched between extremely upper cladding system；
4, overhead traveling crane extracts anode scrap (without crust breaking, the operation such as skim, fish out block), by new 1 handling of anode and install it is in place, with less
It measures alumina powder and fills seam (not having to the operation such as receive side, masonry, add mulch) between extremely upper cladding system, change poles finishes；
5, after the crust layer solidified occurs in the melt in slot to be electrolysed at seam, from anode cladding system 2 to from middle seam
Landfill keeps the temperature mulch 5；
Certainly, above is specific application example of the invention, and there are other embodiments of the invention, all using equivalent
The technical solution that replacement or equivalent transformation are formed, all falls within protection scope of the presently claimed invention.
Claims (7)
1. a kind of aluminum electrolyzing cell used anode covering method, it is characterised in that: using three layers of covering above anode (1), from anode
(1) top surface is upwards successively are as follows: first layer is that antioxidant layer (4), the second layer being stacked above anode are gas blanket, third
Layer is anode cladding system (2)；Middle seam between two rows of anodes (1) is filled using anti-oxidation coating material layer (5) is kept the temperature；It is being electrolysed
Side cladding system (3) are equipped between anode (1) outside on slot side insulating layer (6).
2. aluminum electrolyzing cell used anode covering method according to claim 1, it is characterised in that: the anode cladding system
(2) it is made of the above Material cladding of one or two layers；When using two layers or more Material cladding structure, external working lining (7)
It is constituted using sizing refractory material, internal and top working lining (8) is constituted using sizing or indefinite form flame-proof thermal insulation material；Sun
Pole cladding system (2) is the single anode cladding system or the bianode monolith anode cladding system of covering for covering single anode.
3. aluminum electrolyzing cell used anode covering method according to claim 2, it is characterised in that: the gas blanket is located at anode
Below cladding system (2), contacted to avoid anode cladding system (2) with the direct of melt in electrolytic process；The gas blanket
Height is in 0~200mm range.
4. aluminum electrolyzing cell used anode covering method according to claim 2, it is characterised in that: the anode cladding system
(2) the gap aluminium oxide between anode cladding system (2), between side cladding system (3) and side cladding system (3)
Powder, skull powder, ceramic fiber cotton, asbestos cloth or heat preservation rope filling.
5. a kind of aluminum electrolyzing cell used anode cladding system, it is characterised in that: anti-including what is set gradually upwards from anode (1) top surface
The oxide bed of material (4), gas blanket and anode cladding system (2)；The anode cladding system (2) is at a distance from anode (1) top surface
It is adjusted by height adjuster (9)；The anode cladding system (2) be equipped with for avoid its when in use with anode rod
(11) or between anode girder steel (12) hole (10) interfered, with flexible fire resisting between the hole (10) and anode girder steel (12)
The filling of thermal insulation material material.
6. aluminum electrolyzing cell used anode cladding system according to claim 5, it is characterised in that: on anode cladding system (2)
Equipped with for anode cladding system (2) to be hung on to the lifting lug (13) on anode girder steel (12).
7. aluminum electrolyzing cell used anode cladding system according to claim 5, it is characterised in that: the anode cladding system
(2) one side or periphery is provided with flange (14).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710060450.3A CN106757164B (en) | 2017-01-24 | 2017-01-24 | A kind of aluminum electrolyzing cell used anode covering method and device |
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| CN201710060450.3A CN106757164B (en) | 2017-01-24 | 2017-01-24 | A kind of aluminum electrolyzing cell used anode covering method and device |
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| CN106757164A CN106757164A (en) | 2017-05-31 |
| CN106757164B true CN106757164B (en) | 2019-04-02 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109082684A (en) * | 2018-09-19 | 2018-12-25 | 重庆旗能电铝有限公司 | It is a kind of using electrolyte shell material as the electrolytic cell of anode-covered material |
| FR3090700B1 (en) * | 2018-12-20 | 2021-01-01 | Rio Tinto Alcan Int Ltd | Anode assembly and electrolysis cell including this anode assembly |
| CN110029366B (en) * | 2019-04-22 | 2020-09-22 | 贵州铝城铝业原材料研究发展有限公司 | Aluminum electrolysis continuous prebaked anode mechanical steel claw heat insulation structure |
| CN112342574A (en) * | 2020-11-06 | 2021-02-09 | 云南云铝润鑫铝业有限公司 | Method for recycling waste cell lining electrolyte material of aluminum cell |
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| CN102747382A (en) * | 2011-04-21 | 2012-10-24 | 贵阳铝镁设计研究院有限公司 | Heat preserving and oxidation resisting method in aluminum electrolysis cell production and heat preserving covering device |
| CN103160860A (en) * | 2011-12-14 | 2013-06-19 | 中铝国际技术发展有限公司 | Method for covering prebaked anodes in aluminum electrolyzer |
| CN103540958A (en) * | 2013-09-13 | 2014-01-29 | 高伟 | Aluminum cell provided with suspending partition wall |
| CN205529069U (en) * | 2016-04-12 | 2016-08-31 | 贵阳铝镁设计研究院有限公司 | Confirm that positive pole cover material adds instrument of thickness |
| CN206467301U (en) * | 2017-01-24 | 2017-09-05 | 贵阳铝镁设计研究院有限公司 | A kind of aluminum electrolyzing cell used anode cladding system |
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2017
- 2017-01-24 CN CN201710060450.3A patent/CN106757164B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102747382A (en) * | 2011-04-21 | 2012-10-24 | 贵阳铝镁设计研究院有限公司 | Heat preserving and oxidation resisting method in aluminum electrolysis cell production and heat preserving covering device |
| CN103160860A (en) * | 2011-12-14 | 2013-06-19 | 中铝国际技术发展有限公司 | Method for covering prebaked anodes in aluminum electrolyzer |
| CN103540958A (en) * | 2013-09-13 | 2014-01-29 | 高伟 | Aluminum cell provided with suspending partition wall |
| CN205529069U (en) * | 2016-04-12 | 2016-08-31 | 贵阳铝镁设计研究院有限公司 | Confirm that positive pole cover material adds instrument of thickness |
| CN206467301U (en) * | 2017-01-24 | 2017-09-05 | 贵阳铝镁设计研究院有限公司 | A kind of aluminum electrolyzing cell used anode cladding system |
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