CN103597125A - Process and device for limiting the emission of gaseous pollutants from anode butts - Google Patents
Process and device for limiting the emission of gaseous pollutants from anode butts Download PDFInfo
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- CN103597125A CN103597125A CN201280021816.1A CN201280021816A CN103597125A CN 103597125 A CN103597125 A CN 103597125A CN 201280021816 A CN201280021816 A CN 201280021816A CN 103597125 A CN103597125 A CN 103597125A
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- aluminum oxide
- anode scrap
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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
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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
- C25C3/125—Anodes based on carbon
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- Organic Chemistry (AREA)
- Electrolytic Production Of Metals (AREA)
Abstract
The invention relates to a process and a device for treating anode butts (5), taken from cells for producing aluminium by melt electrolysis, by covering the anode butts (5) with alumina (8) that is able to capture fluorine, the process consisting in, as soon as the butt (5) has been removed from the electrolysis cell, submerging it in alumina (8) that has been melted beforehand in order to make the submersion easier, and in that the alumina is allowed to solidify after the submersion so that the butt is covered with solid alumina until it has made the transfer from the electrolysis cell to a station equipped with devices for extracting and treating fumes, especially a hot grinding station or a cooling station, so as to confine the part and limit emission of gaseous pollutants, especially fluorinated pollutants.
Description
Technical field
The present invention relates to reduce gaseous emission in the process by fused salt electrolysis process industrial production aluminium.This production is carried out in electrolyzer, and tens electrolyzers are grouped in an electrolyzer that is known as potroom.Each electrolyzer contains prebake can used up anode and fixed negative pole, and for aluminum oxide is reduced into aluminium, aluminium is deposited in bottom of electrolytic tank.This reduction reaction occurs in temperature higher than 950 ℃ and when there is fluorine.
Background technology
Once anode has been consumed, self-propelled crane takes out anode from electrolyzer, and is conventionally placed in potroom with cooling to their time.At the rest part of presents, the bottom that is arranged in the anode under the horizontal plane of electrolyzer capping oxidation aluminium will be called as anode scrap.Therefore, anode scrap comprises the remaining carbon part that contains, containing the attached a part of metallic element of carbon part, and from fluoridizing coating bath and the residue containing the capping oxidation aluminium of carbon part from covering.
When they are when cooling, as long as the electrolyzer residue release gaseous fluorine (HF) that their temperature, higher than about 300 ℃, contacts with air, this is highly polluted.Gaseous fluorine is derived from reacting of coating bath residue and the water vapor existing in air.
Patent CA2216923 has described a kind of by collect the method for autotomy head discharge for the collecting device of electrolyzer.In order to accomplish this point, residual head is placed in enclosed chamber, and this enclosed chamber is in close proximity to electrolyzer and is connected with its suction machinery.The method is not exclusively satisfactory, because in the sealing chamber that residual head is placed into them time, need to operate carefully this residual head.In addition, can't limit residual head discharge and require to there is the additional capacity for the treatment of residual head discharge for the treatment of the equipment of electrolyzer smog.Finally, the method has occupied the space on close electrolyzer side, and this can hinder operator's work.
Patent CA2256145 has described a kind of for the residual head of cooling anodes and will reduce the method for their gaseous fluorine discharge.When in the method, anode scrap is through sealing tunnel, be immersed in fluidised form alumina layer.Spurting into air makes aluminum oxide fluidization and carrys out cooling residual head by convection current.This residual head passes through tunnel the time about two hours, and this can make their temperature drop to below 300 ℃.Then, continuation is carried out cooling in the open.During it passes through tunnel, residual head fluidised form aluminum oxide has around gathered the fluorinated gas of most of discharge, and remainder is pumped by Tunnel Ventilation System and purified by traditional smoke treating device.For they are transferred to cooling tunnel from electrolyzer, residual head is placed in storage tank, at them, can cover so that the discharge of restriction gaseous fluorine by oxidized aluminium.This technical scheme is not exclusively satisfactory, because need the tunnel that length is very large, need to be between 25 meters to 60 meters, and need to have very large fluidised form to flow, and for operating and the device of the residual head that advances, this device is a potential source of trouble.This tunnel also needs the air jet system of very complex, and its fluidization is extraly positioned at the aluminum oxide on residual head.The passage of anode scrap in connecting container needs extra attended operation.In addition, in this embodiment, when the oxidized aluminium of hot anode covers, can spray the phenomenon of aluminum oxide, therefore after each use container, need aluminum oxide to remove clean.
Summary of the invention
The present invention can be after anode scrap be removed from electrolyzer, and restriction is from the gaseous emission of anode scrap, and the discharge producing by an equipment collection simple to operate.Preferably, the anode scrap taking out from electrolyzer for each, this equipment comprises keeps apart the residual head part and the ambient air that by coating bath residue, are covered.In order to accomplish this point, residual head is put in a large amount of alumina powders that are included in storage tank, so that residual head is embedded in aluminum oxide completely.The gaseous fluorine of any formation at once oxidized aluminium is collected, and has prevented any pollution of potroom.
Therefore, the present invention includes a kind of processing and from the electrolyzer by aluminum production by fused-salt electrolysis, take out the method for anode scrap, the method covers anode scrap with the aluminum oxide that can collect fluorine, it is characterized in that, once take out residual head from electrolyzer, described residual head is just immersed in aluminum oxide, before this aluminum oxide, be fluidized to contribute to submergence, be further characterized in that, once realize submergence, the fluidization of aluminum oxide is just stopped, so that residual head is covered by static aluminum oxide, until it is from described electrolyzer, to being equipped with, at least one smog reclaims and the transmission at the station for the treatment of facility finishes, especially hot pulverizing station or cooling stations, so, seal residual head and limit the discharge of its gas pollutant, especially fluoridize pollutent.
In the present invention, the amount of described aluminum oxide is fluidized to promote by or the anode scrap of high temperature is inducted in the amount of this aluminum oxide.Once residual head should have on position, fluidization is just stopped.After fluidization stops, aluminum oxide falls because of gravity and covers anode scrap, causes it to be closed.Then aluminum oxide, just as physical barriers, reduces residual ambient air convection current and moves, and aluminum oxide is also as chemical barrier, because of the gaseous fluorine for being discharged by residual head at once oxidized aluminium absorb.
During taking out anode scrap, aluminum oxide is advantageously fluidized to promote this taking-up.
When anode scrap is removed from electrolyzer, the temperature that contains carbon part is approximately 700 ℃.When temperature is during lower than about 300 ℃, the fluorine gas of discharging containing carbon part becomes considerably less, thereby no longer needs to limit it.
After anode scrap is passed to the heat pulverizing station that is equipped with at least one smog recovery and treatment facility, aluminum oxide is fluidized again to contribute to anode scrap from taking out for sealing the amount of the aluminum oxide of described residual head.Crushed containing carbon part, it is used to manufacture new anode.After crushing operation, should containing carbon part be retained in that at least one smog reclaims and treatment unit under, at least until their temperature drop to lower than 300 ℃.
In a favourable variant of the present invention, after anode scrap is passed to the cooling stations that is equipped with at least one smog recovery and treatment facility, aluminum oxide is fluidized again to contribute to the carbon part that contains of the residual head of cooling anodes.Coolingly advantageously continuing, until dropped to below 300 ℃ containing the temperature of carbon part.
The present invention also comprises the equipment that utilizes aforesaid method to process anode scrap, it is characterized in that, this equipment comprises at least one storage tank and for the device of this aluminum oxide of fluidization, comprises enough alumina amounts to cover anode scrap in this storage tank.
Accompanying drawing explanation
Except above-mentioned decoration form, the present invention also comprises other decoration forms of set amount, and it is in the embodiment of the several examples that are described with reference to the drawings as follows and be described, and this should not be regarded as limitation of the invention.In these figure:
-Fig. 1 shows the perspective illustration of the anode being consumed,
-Fig. 2 shows according to the perspective illustration of an example embodiment of residual container of the present invention,
-Fig. 3 shows according to the schematic diagram of the vertical cross-section of residual container of the present invention, and
-Fig. 4 shows according to the schematic diagram of residual container of the present invention, and it is placed in the station that is equipped with smog recovery and treatment facility.
Embodiment
Fig. 1 shows the schematic diagram of a simple depleted anode, and it is the anode of standard in the aluminium by fused salt electrolysis process is produced.It is by hanging over forming containing carbon part 1 on metal bar 2, and metal bar 2 is 2 to 3 meters long.This rod be used for supplying with electric current and for by this anodic bonding to this electrolyzer.When anode takes out from electrolyzer, the residual layer of capping oxidation aluminium 12 still remains on this part that contains on carbon part 1 and be plated in this metal bar 2.Therefore, anode scrap 5 is by containing carbon part 1, residual capping oxidation aluminium 12, and plating forms with the part of the metal bar 2 of residual capping oxidation aluminium 12.Also can have by two such as 1 the double anode forming containing carbon part, be suspended on single metal part or rod 2.
In example embodiment of the present invention as shown in Figure 2, residual container 3 is comprised of the metal construction that forms storage tank 4a, 4b, 4c, and anode scrap 5 is placed in storage tank 4a, 4b, 4c.In this example, container 3 consists of three storage tanks, and thereby can hold three residual heads of the double anode such as 5.In the embodiment of other examples, container 3 will have the storage tank of different quantities, for example 2 or 4.
The bottom of each storage tank 4 comprises disk of material 6, thereby has the effect that enough porousness realize fluidization thin slice when this disk of material 6 keeps aluminum oxide 8.For example, this dish 6 can be made by sintering metal.It is supported by the stiffener not illustrating in the drawings.The region 7 that is positioned at sintering metal dish 6 belows is supplied to fluidised form gas to obtain the fluidization of aluminum oxide 8.Advantageously, this fluidised form gas is air, but also may be the gas of other kinds, for example nitrogen.
To region, 7 equipment of supplying with fluidised form gas do not illustrate in the drawings.The head of sintering metal dish 6 and aluminum oxide 8 produces pressure drop, and this pressure drop impels gas to be uniformly distributed on the whole surface of sintering metal dish 6.Even like this, according to the quantity of the stiffener of support sintering metal dish 6 and their geometrical shape, the equipment of supplying with fluidised form gas can comprise several inlet mouths, so that assignment of traffic is to the surperficial different piece in region 7.
Fig. 2 shows three kinds of states that storage tank 4 can be in sight.Storage tank 4a is empty, there is no aluminum oxide, and storage tank 4b is equipped with fluidised form aluminum oxide 8a, and storage tank 4c comprises the anode scrap 5 being limited in a large amount of on-fluent aluminum oxide 8b.At production period, the oxidized aluminium 8 of a set of storage tank 4 is full of.
The fluidization of aluminum oxide 8 is advantageously controlled separately by a storage tank, a storage tank ground, to this state is restricted to and needs fluidised storage tank 4.
The smallest tier of maintenance aluminum oxide 8 is positioned at anode scrap 5 belows and prevents from contacting with sintering metal dish 6 for residual 5 is favourable.In the example embodiment of Fig. 3, two crosspieces 9 are used as anode scrap 5 and coil stopper or the barrier sheet between 6.Crosspiece 9 is placed on several centimeters on sintering metal dish 6, for example 10 centimetres.Select quantity, the shape and size of these crosspieces 9 so that the pressure drop in fluidised form gas do not increase and can make operator can near storage tank 4 to empty and to clear up this storage tank 4.For example, crosspiece 9 can be made with the profile of I or T.For example, crosspiece 9 is connected to two relative vertical wall of metal construction 3 by their longitudinal end.If provide suitable support 6 times at dish, they also can rest on dish 6.
As shown in Figures 2 and 3, by means of removable frenulum 10, can make anode bar 2 firm.For example, these frenulums are fixed between the edge and anode bar 2 of metal construction 3.
For the anode scrap of about 0.3 cubic metre 5, in each storage tank 4, the amount of necessary aluminum oxide 8 is about 1.8 cubic metres.The size of storage tank 4 is limited by the amount containing the size of carbon part 1 and required aluminum oxide 8 of residual 5.For example, the length of storage tank 4 is 2 meters, and width is 2 meters, is highly 1 meter.Before residual head is immersed in aluminum oxide, the height of aluminum oxide 8 is approximately 0.6 meter.
Can fluidised form gas be supplied to storage tank 4 by multiple device, for example, by being connected to the fluidised form air distribution system of electrolyzer.Specific air distribution system also can be whole potroom storage tank 4 fluidised form and set up.In another variant, each container 3 can be equipped with fan, and it provides necessary air-flow to container.When this equipment investment operation, adjustable supply is for making flow and the pressure of the fluidised air of aluminum oxide.For example, to storage tank 4 supply flow rates, be approximately the air that 270 cubes ms/h, pressure are approximately 1500daPa.
Aluminum oxide 8 used does not need to have the high ability of collecting fluorine.It is mainly used as physical barriers to stop the convection current of anode ambient air.Therefore the fluorided alumina 8 of, using in electrolyzer can be used in storage tank 4.As a variant, can use aluminum oxide 8 pure, that be not fluorinated.
When taking out residual 5 from storage tank 4, many aluminum oxide can still be retained in the top containing carbon part 1.When moving for residual 5, some in these aluminum oxide may drop on the ground.In order to prevent this phenomenon, after residual 5 has been lifted to more than alumina layer, operator can remove these aluminum oxide with manual work or gas spray gun.In a variant embodiment, side nozzle can be placed on the top of storage tank 4, automatically to carry out this operation when being removed for residual 5.
In order to make operation easier, residual container 3 comprises the device that can be caught by forklift or self-propelled crane.Therefore, at residual 5, be placed into after storage tank 4, container 3 can be moved to the space near potroom, for example residual 5 is cooled there or pulverizes.
Conventionally, potroom comprises the parallel electrolyzer of 1 or 2 row.In whole potroom, implement anode change operation.Therefore, following way is suitable: when new anode is placed in electrolyzer, on each row's electrolyzer, every three electrolyzers, just put a residual container 3 that contains three storage tanks 4.Therefore,, for the potroom that contains 100 electrolyzers, 30 residual containers 3 are just enough.
Need to reset termly and supplement contained aluminum oxide 8 in storage tank 4, to keep sufficient capacity gauge.For each residual 5 fluidization that removes and place the aluminum oxide 8 of operation, guarantee that aluminum oxide 8 is stirred and therefore guaranteed that the level of the fluorine in all storage tanks 4 is uniform.Replacement frequency is relevant with the quality of aluminum oxide used.The initial ability that aluminum oxide 8 is collected fluorine is larger, and the time that it can experience between two replacings is just longer.Therefore, with pure nonfluorinated aluminum oxide, substitute the aluminum oxide for electrolyzer, can make the frequency of supplementing storage tank 4 reduce.With the frequency determined or when refuse is drained from electrolyzer, the periodic replacement of tissue oxidizing aluminium is favourable.Advantageously, after container 3 is sent to suitable space, emptying storage tank 4.
According to each storage tank 4 of present device, comprise one or more evacuation ports of placing fast on sintering metal dish 6.When emptying aluminum oxide, it is favourable making aluminum oxide fluidization, and this is conducive to its discharge.Fluidised form thin slice 6 or dish are enough solid for operator, to enter residual container 3 and remove the fragment of anode scrap 5 that falls into bottom.
In Fig. 4, schematically show for according to the container 3 of residual 5 of the present invention, it is placed on and is equipped with that smog reclaims and the station 11 for the treatment of facility 13.This station 1 can be to pulverize station or cooling stations for the heat of anode scrap 5.
Claims (10)
1. the method for the anode scrap (5) that a processing is taken out from the electrolyzer by aluminum production by fused-salt electrolysis, the method can be collected the aluminum oxide of fluorine in the upper covering of described anode scrap (5), it is characterized in that, once residual head (5) takes out from electrolyzer, described anode scrap (5) is immersed in described aluminum oxide (8), before this aluminum oxide, be fluidized to contribute to submergence, and be further characterized in that, once realize described submergence, the described fluidization of described aluminum oxide (8) is just stopped, so that described anode scrap (5) is covered by static aluminum oxide, until it is from described electrolyzer, to being equipped with, at least one smog reclaims and the transmission at the station (11) for the treatment of facility (13) finishes, especially hot pulverizing station or cooling stations, so that seal described anode scrap (5), and limit the discharge of its gas pollutant, especially fluoridize pollutent.
2. method according to claim 1, it is characterized in that, described anode scrap (5) is positioned at and is equipped with that at least one smog reclaims and the described station (11) for the treatment of facility (13) is located, described aluminum oxide (8) be fluidized in case promote described residual head (5) contain the cooling of carbon part.
3. method according to claim 2, is characterized in that, keeps the described of described residual head (5) being promoted by described fluidised form aluminum oxide (8) to contain the described cooling of carbon part, until the described temperature that contains carbon part has dropped to below 300 ℃.
4. according to the method in any one of claims 1 to 3, it is characterized in that, during the described anode scrap of taking-up (5), described aluminum oxide (8) is fluidized.
5. can implement according to the method described in any one in claim 1 to 4 equipment for the treatment of anode scrap, it is characterized in that, comprise at least one comprise q.s aluminum oxide (8) thus cover the storage tank (4) of described anode scrap (5), and for making the fluidised device of this aluminum oxide (8).
6. equipment according to claim 5, it is characterized in that, comprise that at least one is residual the container (3) of the metal construction form that limits at least one storage tank (4), and be preferably a plurality of nearby tank (4a, 4b, 4c), its each can hold at least one anode scrap (5).
7. equipment according to claim 6, it is characterized in that, the bottom of each storage tank (4) comprises disk of material (6), this disk of material can have enough porositys and serve as fluidised form thin slice when keeping described aluminum oxide (8), and the region (7) being positioned under described dish (6) is supplied to the fluidised form gas such as air.
8. equipment according to claim 7, is characterized in that, described dish (6) is made by sintering metal.
9. according to the equipment described in any one in claim 5 to 8, it is characterized in that, each storage tank is equipped with crosspiece (9), this crosspiece plays stopper effect, the anode scrap (5) being immersed in described storage tank (4) rests on this strut rail, to prevent that described residual head (5) and the bottom connection of described storage tank (4) from touching, and remain in aluminum oxide (8) layer under described anode scrap (5).
10. according to the equipment described in any one in claim 5 to 9, it is characterized in that, also comprise the removable frenulum (10) being fixed between the rod (2) of anode scrap (5) and the edge of storage tank (4), the described anode scrap (5) that this removable frenulum makes to be immersed in described storage tank (4) is firm.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1154223 | 2011-05-16 | ||
| FR1154223A FR2975405B1 (en) | 2011-05-16 | 2011-05-16 | METHOD AND DEVICE FOR LIMITING EMISSIONS OF GASEOUS POLLUTANTS BY ANODE MEGOTS |
| PCT/FR2012/051014 WO2012156616A1 (en) | 2011-05-16 | 2012-05-09 | Process and device for limiting the emission of gaseous pollutants from anode butts |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103597125A true CN103597125A (en) | 2014-02-19 |
| CN103597125B CN103597125B (en) | 2016-04-27 |
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ID=46201737
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201280021816.1A Active CN103597125B (en) | 2011-05-16 | 2012-05-09 | The method of discharging for the gas pollutant limited from anode scrap and equipment thereof |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP2710170B1 (en) |
| CN (1) | CN103597125B (en) |
| CA (1) | CA2835800C (en) |
| FR (1) | FR2975405B1 (en) |
| WO (1) | WO2012156616A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110295376A (en) * | 2019-07-12 | 2019-10-01 | 东方电气集团东方锅炉股份有限公司 | A kind of electrolytic aluminum smoke purification system and technique |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NO20181483A1 (en) | 2018-11-20 | 2020-05-21 | Norsk Hydro As | A method and equipment for storing and transporting hot gas emitting components |
| CN111111898B (en) * | 2020-01-23 | 2022-04-12 | 廉博 | Digestion and utilization technology process for directly feeding electrolytic shell surface block into purification system |
| FR3122777B1 (en) | 2021-05-06 | 2023-03-31 | Reel Alesa | CONTAINMENT DEVICE FOR AN ANODIC ASSEMBLY |
| CN117716072A (en) * | 2021-07-28 | 2024-03-15 | 力拓艾尔坎国际有限公司 | Anode cooling table |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB732101A (en) * | 1950-01-06 | 1955-06-22 | British Aluminium Co Ltd | Improvements in methods of and means for the heat treatment of solid bodies |
| US4355017A (en) * | 1981-05-14 | 1982-10-19 | Martin Marietta Corporation | Aluminum electrolytic cell cathode waste recovery |
| SU1654379A1 (en) * | 1988-03-23 | 1991-06-07 | С.Д.Борзых | Method for feeding alumina to aluminium electrolytic cell |
| DE4221882A1 (en) * | 1992-07-03 | 1994-01-05 | Westfalia Becorit Ind Tech | Transport device for removing used anodes in aluminium@ melting furnaces - comprises containers provided with gas filter units and closable door to prevent fluorine@ emission |
| US6161307A (en) * | 1998-12-16 | 2000-12-19 | Alcan International Limited | Fluid bed system for cooling hot spent anode butts |
| CN201605332U (en) * | 2009-12-11 | 2010-10-13 | 贵阳铝镁设计研究院 | Residual anode cooling and conveying device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2754832B1 (en) | 1996-10-23 | 1998-11-27 | Pechiney Aluminium | PROCESS FOR CHANGING ANODES USED IN ALUMINUM ELECTROLYSIS TANKS AND GAS EFFLUENT COLLECTION DEVICE ALLOWING IT TO BE USED |
-
2011
- 2011-05-16 FR FR1154223A patent/FR2975405B1/en active Active
-
2012
- 2012-05-09 EP EP12725115.5A patent/EP2710170B1/en active Active
- 2012-05-09 CA CA2835800A patent/CA2835800C/en active Active
- 2012-05-09 CN CN201280021816.1A patent/CN103597125B/en active Active
- 2012-05-09 WO PCT/FR2012/051014 patent/WO2012156616A1/en active Application Filing
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB732101A (en) * | 1950-01-06 | 1955-06-22 | British Aluminium Co Ltd | Improvements in methods of and means for the heat treatment of solid bodies |
| US4355017A (en) * | 1981-05-14 | 1982-10-19 | Martin Marietta Corporation | Aluminum electrolytic cell cathode waste recovery |
| SU1654379A1 (en) * | 1988-03-23 | 1991-06-07 | С.Д.Борзых | Method for feeding alumina to aluminium electrolytic cell |
| DE4221882A1 (en) * | 1992-07-03 | 1994-01-05 | Westfalia Becorit Ind Tech | Transport device for removing used anodes in aluminium@ melting furnaces - comprises containers provided with gas filter units and closable door to prevent fluorine@ emission |
| US6161307A (en) * | 1998-12-16 | 2000-12-19 | Alcan International Limited | Fluid bed system for cooling hot spent anode butts |
| CN201605332U (en) * | 2009-12-11 | 2010-10-13 | 贵阳铝镁设计研究院 | Residual anode cooling and conveying device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110295376A (en) * | 2019-07-12 | 2019-10-01 | 东方电气集团东方锅炉股份有限公司 | A kind of electrolytic aluminum smoke purification system and technique |
| CN110295376B (en) * | 2019-07-12 | 2024-03-22 | 东方电气集团东方锅炉股份有限公司 | Electrolytic aluminum flue gas purification system and process |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2975405B1 (en) | 2013-05-17 |
| CN103597125B (en) | 2016-04-27 |
| EP2710170B1 (en) | 2017-01-18 |
| EP2710170A1 (en) | 2014-03-26 |
| FR2975405A1 (en) | 2012-11-23 |
| CA2835800C (en) | 2019-07-02 |
| CA2835800A1 (en) | 2012-11-22 |
| WO2012156616A1 (en) | 2012-11-22 |
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