CN109296937A - A kind of Steam Recovery component and alumina producing system - Google Patents
A kind of Steam Recovery component and alumina producing system Download PDFInfo
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- CN109296937A CN109296937A CN201811208465.0A CN201811208465A CN109296937A CN 109296937 A CN109296937 A CN 109296937A CN 201811208465 A CN201811208465 A CN 201811208465A CN 109296937 A CN109296937 A CN 109296937A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D1/00—Pipe-line systems
- F17D1/02—Pipe-line systems for gases or vapours
- F17D1/06—Pipe-line systems for gases or vapours for steam
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F7/00—Compounds of aluminium
- C01F7/02—Aluminium oxide; Aluminium hydroxide; Aluminates
- C01F7/04—Preparation of alkali metal aluminates; Aluminium oxide or hydroxide therefrom
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- Engineering & Computer Science (AREA)
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- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Abstract
The present embodiment provides a kind of Steam Recovery component and alumina producing systems, are related to alumina producing operating technology field.The Steam Recovery component is used to recycle steam caused by the mother liquid evaporation in aluminum oxide production process.It mainly includes water cooler, water sealed tank, cooling tower and water cooling pond.Water cooler is for collecting steam and condensing steam.Enter water sealed tank in the form of liquid water by condensed steam.The mounting height of water sealed tank is greater than the mounting height of cooling tower, so that the liquid water energy in water sealed tank automatically flows into cooling tower by difference in height.It generally requires and the water in hot-tub is pumped to cooling tower using heat-exchanger pump cools down.The Steam Recovery component is poor using the mounting height of water sealed tank and cooling tower, eliminates the input cost of heat-exchanger pump, reduces the consumption of resource.Liquid water is discharged into water cooling pond by cooling tower again after cooling down to liquid water.Water cooling pond is used to for liquid water being discharged into water cooler to condense to the new steam into water cooler.
Description
Technical field
The present invention relates to alumina producing operating technology fields, in particular to a kind of Steam Recovery component and oxidation
Aluminium production system.
Background technique
In Bayer process aluminum oxide production process, circulating mother liquor can need to make again after being evaporated to a certain concentration after decomposition
With evaporization process is its required production technology.Principle is to be heated circulating mother liquor using high-temperature steam, steams moisture therein
Send a manuscript to the compositor and remove, circulating mother liquor is made to reach the concentration of requirement.To reduce the water loss in production process, mother liquid evaporation need to be generated
Secondary steam condensing recovery, reuses after cooling down.Currently, during secondary steam condensation process after the recovery energy consumption compared with
Greatly, so that the cost recovery of factory's cost is higher.
Summary of the invention
The purpose of the present invention is to provide a kind of Steam Recovery components, can reduce at secondary steam condensation after the recovery
Energy consumption during reason reduces cost recovery.
Another object of the present invention is to provide a kind of alumina producing systems, can reduce alumina producing system
Input cost.
The embodiment of the present invention is achieved in that
A kind of Steam Recovery component, for recycling steam caused by the mother liquid evaporation in aluminum oxide production process.It is wrapped
Include water cooler, water sealed tank, cooling tower and water cooling pond.Water cooler is for collecting steam and condensing steam.By condensation
Steam afterwards enters water sealed tank in the form of liquid water.The mounting height of water sealed tank is greater than the mounting height of cooling tower, so that water
Liquid water energy in sealing groove automatically flows into cooling tower by difference in height.Cooling tower again arranges liquid water after cooling down to liquid water
Enter to water cooling pond.Water cooling pond is used to for liquid water being discharged into water cooler to condense to the new steam into water cooler.
In an embodiment of the present invention, the difference in height of water sealed tank and cooling tower is 8-12 meters.
In an embodiment of the present invention, water sealed tank is connected with cooling tower by first pipe, and first pipe is arranged
There is the first valve.The internal diameter of first pipe is 1000-1400 millimeters.
It in an embodiment of the present invention, is 25-35 DEG C by the temperature of cooling tower liquid water after cooling.Water sealed tank
The temperature of interior liquid water is 45-55 DEG C.
In an embodiment of the present invention, water cooling pond is connected with water cooler by second pipe, and second pipe is arranged
There is the water supply pump for conveying liquid water from water cooling pond to water cooler.
In an embodiment of the present invention, water cooler is provided with helical pipe.Helical pipe is located in water cooler.Spiral
The both ends of pipeline are respectively equipped with the entrance and exit for steam disengaging.Entrance is located at the one end of helical pipe far from water sealed tank.The
Two pipelines and helical pipe are interconnected, so that liquid water is directly contacted with steam carries out heat exchange.
In an embodiment of the present invention, second pipe is provided with branch pipe close to one end of helical pipe.Branch pipe is located at
In helical pipe.The extending direction of branch pipe is identical as spiral descent direction of the steam in helical pipe.The length of branch pipe is 2-5
Centimetre, the outer diameter of branch pipe is less than the internal diameter of helical pipe.Branch pipe is located at below entrance, and 3-7 centimetres of branch pipe and entrance interval.
In an embodiment of the present invention, helical pipe is provided with breeze way.3-7 centimetres of breeze way and outlet interval,
The length of breeze way is 3-6 centimetres.Breeze way is located in helical pipe.Breeze way for reducing fluid in helical pipe flowing
Speed.
In an embodiment of the present invention, breeze way is provided with multilayer Buffer Unit along the hand of spiral of helical pipe.
Every layer of Buffer Unit includes the different countercheck rod of multiple extending directions.Countercheck rod in two layers of Buffer Unit of arbitrary neighborhood prolongs
It is different to stretch direction.
A kind of alumina producing system, including any one of the above Steam Recovery component.
The embodiment of the present invention at least have the following advantages that or the utility model has the advantages that
The embodiment of the present invention provides a kind of Steam Recovery component, for recycling the institute of the mother liquid evaporation in aluminum oxide production process
The steam of generation.It mainly includes water cooler, water sealed tank, cooling tower and water cooling pond.Water cooler is for collecting steam and will steam
Vapour is condensed.Enter water sealed tank in the form of liquid water by condensed steam.The mounting height of water sealed tank is greater than cooling
The mounting height of tower, so that the liquid water energy in water sealed tank automatically flows into cooling tower by difference in height.In traditional handicraft, generally need
First the water come out in water sealed tank to be stored into hot-tub, recycle heat-exchanger pump by the water in hot-tub be pumped to cooling tower into
Row cooling.It is calculated through inventor, the daily power consumption of heat-exchanger pump is in 35136KWh or so, and every degree electricity is by 0.65 yuan of calculating, then every year
The input cost of heat-exchanger pump energy consumption is at 833.6 ten thousand yuan or so.In Steam Recovery component provided in an embodiment of the present invention, water seal is utilized
The mounting height of slot and cooling tower is poor, eliminates the setting of heat-exchanger pump, make factory eliminate investment every year on heat-exchanger pump at
This, while decreasing the consumption of resource.Liquid water is discharged into water cooling pond by cooling tower again after cooling down to liquid water.Cold water
Pond is used to for liquid water being discharged into water cooler to condense to the new steam into water cooler.
The embodiment of the present invention also provides a kind of alumina producing system comprising above-mentioned Steam Recovery component.Steam Recovery
The use of component can reduce the input cost in alumina producing system, reduce the consumption of the energy.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be to needed in the embodiment attached
Figure is briefly described, it should be understood that the following drawings illustrates only certain embodiments of the present invention, therefore is not construed as pair
The restriction of range for those of ordinary skill in the art without creative efforts, can also be according to this
A little attached drawings obtain other relevant attached drawings.
Fig. 1 is the structural schematic diagram of Steam Recovery component provided in an embodiment of the present invention;
Fig. 2 is mounting structure schematic diagram of the helical pipe provided in an embodiment of the present invention in water cooler;
Fig. 3 is the fit structure schematic diagram of branch pipe provided in an embodiment of the present invention and helical pipe;
Fig. 4 is the structural schematic diagram of two adjacent Buffer Units provided in an embodiment of the present invention;
Icon: 100- Steam Recovery component;110- water cooler;112- helical pipe;114- entrance;The outlet 116-;130-
Water sealed tank;132- first pipe;The first valve of 134-;150- cooling tower;170- water cooling pond;172- second pipe;174- cold water
Pump;176- branch pipe;178- breeze way;180- Buffer Unit;182- countercheck rod.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.The present invention being usually described and illustrated herein in the accompanying drawings is implemented
The component of example can be arranged and be designed with a variety of different configurations.
Therefore, the detailed description of the embodiment of the present invention provided in the accompanying drawings is not intended to limit below claimed
The scope of the present invention, but be merely representative of selected embodiment of the invention.Based on the embodiments of the present invention, this field is common
Technical staff's every other embodiment obtained without creative efforts belongs to the model that the present invention protects
It encloses.
It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined in a attached drawing, does not then need that it is further defined and explained in subsequent attached drawing.
In the description of the embodiment of the present invention, it should be noted that if there is the finger such as term " on ", "lower", "inner", "outside"
The orientation or positional relationship shown is to be based on the orientation or positional relationship shown in the drawings or when invention product use usually puts
The orientation or positional relationship put, is merely for convenience of description of the present invention and simplification of the description, rather than the dress of indication or suggestion meaning
It sets or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as to limit of the invention
System.In addition, term " first ", " second " etc. are only used for distinguishing description, it is not understood to indicate or imply relative importance.
In the description of the embodiment of the present invention, " multiple " represent at least two.
In the description of the embodiment of the present invention, it is also necessary to which explanation is unless specifically defined or limited otherwise, if occurring
Term " setting ", " installation ", " connected " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection,
Or it is integrally connected;It can be mechanical connection, be also possible to be electrically connected;It can be directly connected, intermediary can also be passed through
It is indirectly connected, can be the connection inside two elements.It for the ordinary skill in the art, can be according to specific feelings
Condition understands the concrete meaning of above-mentioned term in the present invention.
Embodiment
Fig. 1 is please referred to, Fig. 1 show the structural schematic diagram of Steam Recovery component 100.The present embodiment provides a kind of steam to return
Component 100 is received, is mainly used for recycling steam caused by the mother liquid evaporation in aluminum oxide production process, it is raw to reduce aluminium oxide
Water loss during production.In Bayer process aluminum oxide production process, circulating mother liquor need to be by being evaporated to a certain concentration after decomposition
After can reuse, evaporization process is its required production technology.Principle is to be heated circulating mother liquor using high-temperature steam, is made
Moisture evaporation therein excludes, and circulating mother liquor is made to reach the concentration of requirement.It, need to will be female to reduce the water loss in production process
The secondary steam condensing recovery that liquid evaporation generates, reuses after cooling down.
Steam Recovery component 100 mainly includes water cooler 110, water sealed tank 130, cooling tower 150 and water cooling pond 170.
Water cooler 110 is for collecting steam and condensing steam.By condensed steam in the form of liquid water
Into water sealed tank 130.The mounting height of water sealed tank 130 is greater than the mounting height of cooling tower 150, so that the liquid in water sealed tank 130
State water energy automatically flows into cooling tower 150 by difference in height.In traditional handicraft, the water that will first come out in water sealed tank 130 is generally required
Storage recycles heat-exchanger pump that the water in hot-tub is pumped to cooling tower 150 and cools down into hot-tub.It is counted through inventor
Calculate, in 35136KWh or so, every degree electricity calculates the daily power consumption of heat-exchanger pump by 0.65 yuan, then the investment of annual heat-exchanger pump energy consumption at
This is at 833.6 ten thousand yuan or so.In Steam Recovery component 100 provided in an embodiment of the present invention, water sealed tank 130 and cooling tower are utilized
150 mounting height is poor, eliminates the setting of heat-exchanger pump, so that factory is eliminated the input cost every year on heat-exchanger pump, simultaneously
Decrease the consumption of resource.
In the present embodiment, water sealed tank 130 is connected with cooling tower 150 by first pipe 132, and first pipe 132 is arranged
There is the first valve 134.The internal diameter of first pipe 132 is 1000-1400 millimeters.First valve 134 can control first pipe 132
Conducting whether.Further, the mounting height difference of water sealed tank 130 and cooling tower 150 can be 8-12 meters.The difference in height can be with
Guarantee certain flow rate.
Liquid water is discharged into water cooling pond 170 by cooling tower 150 again after cooling down to liquid water.Water cooling pond 170 is used for will
Liquid water is discharged into water cooler 110 to condense to the new steam into water cooler 110.In the present embodiment, liquid after cooling
State water is directly contacted after entering water cooler 110 with the steam in it, and liquid water and steam carry out heat exchange, condenses steam
For liquid, the liquid water that new steam condenses flows into water seal with the original liquid water into water cooler 110 together again
In slot 130.
In the present embodiment, water cooling pond 170 is connected with water cooler 110 by second pipe 172, and second pipe 172 is arranged
There is the water supply pump 174 for conveying liquid water from water cooling pond 170 to water cooler 110.In the present embodiment, the power of water supply pump 174
Second pipe 172 can be made to reach 3500m to the carrying capacity of water cooler 110 for 560kw, lift 47m3/h。
Further, referring to figure 2., Fig. 2 show mounting structure schematic diagram of the helical pipe 112 in water cooler 110.
Water cooler 110 is provided with helical pipe 112.Helical pipe 112 is located in water cooler 110.The two of helical pipe 112
End is respectively equipped with entrance 114 and outlet 116 for steam disengaging.Entrance 114 is located at helical pipe 112 far from water sealed tank 130
One end, outlet 116 are then located at close to one end of water sealed tank 130.Second pipe 172 and helical pipe 112 are interconnected, so that liquid
State water directly contacts with steam and carries out heat exchange.Helical pipe 112 interior in a limited space can increase steam and liquid cold water
Transfer path, the heat exchange both made is more thorough, utilizes heat and cooling capacity more fully, and then reduce subsequent cooling
Required energy consumption.
Further, in order to enable second pipe 172 to be preferably mutually matched use, this implementation with helical pipe 112
Using following setting in example:
Referring to figure 3., Fig. 3 show the fit structure schematic diagram of branch pipe 176 Yu helical pipe 112.
Second pipe 172 is provided with branch pipe 176 close to one end of helical pipe 112.Branch pipe 176 is located at helical pipe 112
It is interior.The extending direction of branch pipe 176 is identical as spiral descent direction of the steam in helical pipe 112 (as shown in figure 3, branch pipe 176
Extending direction it is also consistent with the hand of spiral of helical pipe 112).The length of branch pipe 176 is 2-5 centimetres, the outer diameter of branch pipe 176
Less than the internal diameter of helical pipe 112.Branch pipe 176 is located at 114 lower section of entrance, and branch pipe 176 and entrance 114 are spaced 3-7 centimetres.
Branch pipe 176 is arranged using the above structure, can avoid the ejection of liquid cold water that steam is interfered to flow into helix tube as far as possible
Road 112, the rate of recovery of steam in guarantor unit's time.Branch pipe 176 is arranged in above-mentioned position, can guarantee liquid cold water and steam
With longer contact path, the heat transfer effect of the two is helped to improve.
Further, referring again to Fig. 2, helical pipe 112 is provided with breeze way 178.Between breeze way 178 and outlet 116
Every 3-7 centimetres, the length of breeze way 178 is 3-6 centimetres.Breeze way 178 is located in helical pipe 112.Breeze way 178 is for dropping
The flowing velocity of fluid in low helical pipe 112.When fluid (typically contains a little uncooled steaming for liquid at this time in fluid
Vapour) when reaching breeze way 178, to make to flow intracorporal heat exchange more thorough to be hit to the unexpected of fluid by breeze way 178,
Make not remaining the uncooled steam for liquid in fluid substantially.Breeze way 178 is located at the position, exports 116 due to neighbouring,
Therefore breeze way 178 will not interfere at entrance 114 shock of fluid (shock can make reverse fluid flow a small distance)
Steam enters helical pipe 112.
Further, referring to figure 4., Fig. 4 show the structural schematic diagram of two adjacent Buffer Units 180.
Breeze way 178 is provided with multilayer Buffer Unit 180 (at least 2 layers) along the hand of spiral of helical pipe 112.Every layer
Buffer Unit 180 includes the different countercheck rod 182 of multiple extending directions.Blocking in two layers of Buffer Unit of arbitrary neighborhood 180
The extending direction of bar 182 is different, as shown in Figure 4.When the different countercheck rod 182 in direction can increase fluid by breeze way 178
Shock probability, and then make to flow that intracorporal heat exchange is more thorough, and heat exchanger effectiveness is higher.The quantity of Buffer Unit 180 can be with
It is adjusted according to specific needs.
It should be noted that being not described in detail place in the present embodiment, it is referred to existing alumina producing system
Secondary steam used in system recycles component.For example, cooling tower 150 is located at the top of water cooling pond 170, so that water after cooling can be with
Naturally it flows in water cooling pond 170.
The working principle of Steam Recovery component 100 is:
The steam that mother liquid evaporation generates enters in the helical pipe 112 in water cooler 110, enters spiral by entrance 114
Pipeline 112.Helical pipe 112 can in a limited space in increase steam and liquid cold water transfer path, make the two change
Heat is more thorough, utilizes heat and cooling capacity more fully, and then energy consumption needed for the subsequent cooling of reduction.Meanwhile water supply pump
Cold water in water cooling pond 170 is pumped to branch pipe 176 by second pipe 172 by 174, and cold water is made to flow into helical pipe by branch pipe 176
In 112.Steam directly contacts in helical pipe 112 with cold water, and carries out heat exchange, so that steam is condensed into liquid water.Newly
The liquid water that condenses of steam flowed into water sealed tank 130 together again with the original liquid water into water cooler 110.Water
The temperature of liquid water in sealing groove 130 is 45-55 DEG C.Since the installation that the mounting height of water sealed tank 130 is greater than cooling tower 150 is high
It spends, the liquid water energy in water sealed tank 130 automatically flows into cooling tower 150 by first pipe 132 by difference in height.Eliminate heat-exchanger pump
Use, so that factory is eliminated the input cost every year on heat-exchanger pump, while decreasing the consumption of resource.Cooling tower 150
Liquid water is discharged into water cooling pond 170 again after being cooled down to liquid water.It is discharged into after cooling tower 150 is cooling to water cooling pond
The temperature of liquid water in 170 is generally 25-35 DEG C.Water cooling pond 170 continues through water supply pump 174 and liquid cold water is pumped to water
Cooler 110 is to condense the new steam into water cooler 110.
The present embodiment also provides a kind of alumina producing system comprising above-mentioned Steam Recovery component 100.Steam Recovery group
Part 100 can be used in Bayer process alumina producing system.In Bayer process aluminum oxide production process, after decomposition circulating mother liquor need by
It can be reused after being evaporated to a certain concentration, evaporization process is its required production technology.Principle is will using high-temperature steam
Circulating mother liquor heating excludes moisture evaporation therein, circulating mother liquor is made to reach the concentration of requirement.To reduce in production process
Water loss, the secondary steam condensing recovery that need to generate mother liquid evaporation, reuses after cooling down.
These are only the preferred embodiment of the present invention, is not intended to restrict the invention, for those skilled in the art
For member, the invention may be variously modified and varied.All within the spirits and principles of the present invention, it is made it is any modification,
Equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of Steam Recovery component, for recycling steam caused by the mother liquid evaporation in aluminum oxide production process, feature
It is, including water cooler, water sealed tank, cooling tower and water cooling pond, the water cooler is for collecting the steam and by the steaming
Vapour is condensed, and enters water sealed tank, the mounting height of the water sealed tank in the form of liquid water by the condensed steam
Greater than the mounting height of the cooling tower so that the liquid water energy in the water sealed tank automatically flowed by difference in height it is described
Cooling tower, the liquid water is discharged into the water cooling pond by the cooling tower again after cooling down to the liquid water, described cold
Pond is used to for the liquid water to be discharged into the water cooler to condense the steam newly entered in the water cooler.
2. Steam Recovery component according to claim 1, which is characterized in that the height of the water sealed tank and the cooling tower
Difference is 8-12 meters.
3. Steam Recovery component according to claim 1, which is characterized in that the water sealed tank and the cooling tower pass through the
One pipeline is connected, and the first pipe is provided with the first valve, and the internal diameter of the first pipe is 1000-1400 millimeters.
4. Steam Recovery component according to claim 1, which is characterized in that pass through the cooling tower liquid after cooling
The temperature of state water is 25-35 DEG C, and the temperature of the liquid water in the water sealed tank is 45-55 DEG C.
5. Steam Recovery component according to claim 1-4, which is characterized in that the water cooling pond and the water cooling
Device is connected by second pipe, and the second pipe is provided with for conveying the liquid from the water cooling pond to the water cooler
The water supply pump of state water.
6. Steam Recovery component according to claim 5, which is characterized in that the water cooler is provided with helical pipe, institute
It states helical pipe to be located in the water cooler, the both ends of the helical pipe are respectively equipped with the entrance for steam disengaging and go out
Mouthful, the entrance is located at the one end of the helical pipe far from the water sealed tank, the second pipe and the helical pipe phase
It is intercommunicated, so that the liquid water is directly contacted with the steam carries out heat exchange.
7. Steam Recovery component according to claim 6, which is characterized in that the second pipe is close to the helical pipe
One end be provided with branch pipe, the branch pipe is located in the helical pipe, and the extending direction of the branch pipe and the steam are in institute
The spiral descent direction stated in helical pipe is identical, and the length of the branch pipe is 2-5 centimetres, and the outer diameter of the branch pipe is less than described
The internal diameter of helical pipe, the branch pipe are located at below the entrance, and the branch pipe and 3-7 centimetres of the entrance interval.
8. Steam Recovery component according to claim 7, which is characterized in that the helical pipe is provided with breeze way, institute
It states breeze way and the outlet is spaced 3-7 centimetres, the length of the breeze way is 3-6 centimetres, and the breeze way is located at the spiral shell
In coil road, the breeze way for reducing fluid in the helical pipe flowing velocity.
9. Steam Recovery component according to claim 8, which is characterized in that spiral shell of the breeze way along the helical pipe
Rotation direction is provided with multilayer Buffer Unit, and every layer of Buffer Unit includes the different countercheck rod of multiple extending directions, arbitrarily
The extending direction of the countercheck rod in Buffer Unit described in adjacent two layers is different.
10. a kind of alumina producing system, which is characterized in that including the described in any item Steam Recovery groups of such as claim 1-9
Part.
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CN201811208465.0A CN109296937A (en) | 2018-10-17 | 2018-10-17 | A kind of Steam Recovery component and alumina producing system |
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CN201811208465.0A CN109296937A (en) | 2018-10-17 | 2018-10-17 | A kind of Steam Recovery component and alumina producing system |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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CN115490252A (en) * | 2022-09-29 | 2022-12-20 | 东方希望晋中铝业有限公司 | Aluminum-electricity linkage driving method for aluminum oxide plant |
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Application publication date: 20190201 |