CN109439817A - A kind of granulated energy conservation of blast furnace cinder disappears white equipment - Google Patents
A kind of granulated energy conservation of blast furnace cinder disappears white equipment Download PDFInfo
- Publication number
- CN109439817A CN109439817A CN201811610055.9A CN201811610055A CN109439817A CN 109439817 A CN109439817 A CN 109439817A CN 201811610055 A CN201811610055 A CN 201811610055A CN 109439817 A CN109439817 A CN 109439817A
- Authority
- CN
- China
- Prior art keywords
- blast furnace
- disappears
- energy conservation
- granulated
- furnace cinder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000003818 cinder Substances 0.000 title claims abstract description 23
- 238000004134 energy conservation Methods 0.000 title claims abstract description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 52
- 238000005469 granulation Methods 0.000 claims abstract description 33
- 230000003179 granulation Effects 0.000 claims abstract description 33
- 239000002002 slurry Substances 0.000 claims abstract description 15
- 239000007921 spray Substances 0.000 claims description 41
- 239000002893 slag Substances 0.000 claims description 24
- 238000010926 purge Methods 0.000 claims description 7
- 238000001914 filtration Methods 0.000 abstract description 11
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical group [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 abstract description 2
- 229910052717 sulfur Inorganic materials 0.000 abstract description 2
- 239000011593 sulfur Substances 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 12
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 229910052742 iron Inorganic materials 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 241001062472 Stokellia anisodon Species 0.000 description 1
- 238000000889 atomisation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 235000019504 cigarettes Nutrition 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000002459 sustained effect Effects 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 230000002087 whitening effect Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B3/00—General features in the manufacture of pig-iron
- C21B3/04—Recovery of by-products, e.g. slag
- C21B3/06—Treatment of liquid slag
- C21B3/08—Cooling slag
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B3/00—General features in the manufacture of pig-iron
- C21B3/04—Recovery of by-products, e.g. slag
- C21B3/06—Treatment of liquid slag
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Furnace Details (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
Disappear white equipment the invention discloses a kind of granulated energy conservation of blast furnace cinder; including granulation tower (1) and high-altitude chimney (7); the top of granulation tower (1) is connect by jet chimney (5) with high-altitude chimney (7), and the lower part of granulation tower (1) is connect by the first slag-water slurry pipeline (6) with high-altitude chimney (7).The blast furnace cinder granulated energy conservation white equipment that disappears effectively reduces the discharge of filtering ponds sulfur-bearing steam, realizes that the energy recycles.
Description
Technical field
The present invention relates to metallurgy industries to smelt iron field, and particularly a kind of granulated energy conservation of blast furnace cinder disappears white equipment.
Background technique
It can be generated when blast furnace process high-temperature liquid state slag (1350 DEG C -1500 DEG C), domestic annual 700000000 tons of molten iron of production produces
Raw 2.5 hundred million tons of high-temperature liquid state slag.Precipitating filtration method (often claiming bottom filter method) grain slag technique is generallyd use both at home and abroad to carry out slag
Granulated processed.Hydraulic discharged slag is carried out before State of Blast Furnace, after being smashed slag with water quenching, becomes slag-water slurry (often claiming grain slag), water
Slag enters filtering ponds through sluice, and liquid water is recycled after the filter layer filtering in filtering ponds, and solid-state is left in filtering ponds
Then slag particle grabs slag particle by transporter grab crane, entrucking outward transport.
Grain slag technique can generate a large amount of steam (about 60 DEG C -100 DEG C) during carrying out granulated processed to slag, and grain slag steams
Vapour has corrosivity, surrounding enviroment are polluted in dissemination process, corrodes the equipment of surrounding, simultaneously because filtering ponds away from blast furnace away from
It is close, therefore the steam distributed can also cause certain corrosion to blast-furnace equipment.
Increasingly severeer with Environmental Protection in China situation, the disappear demand of white technology of the steam of grain slag technique is got over by iron and steel enterprise
It is strong to have.The correlative study of many years has been carried out both at home and abroad, it is desirable to eliminate filtering ponds steam, it is white to realize that steam disappears.
Patent CN107815514A, March 20 2018 publication date, disclose it is a kind of " washing slag water Steam Recovery with disappear
The system and recovery method of white haze ", which realizes Steam Recovery by the way of mist cooling first, then utilizes hot-blast stove
Flue gas heating steam prevents white cigarette.Discharge of steam can be effectively reduced using the method for the patent, but a large amount of steam heats
It can be wasted, not be fully used.
Although the whitening method that disappears of blast furnace grain slag system steam has been provided in the prior art, but thermal energy is without sufficiently benefit
With, it is necessary to it studies the granulated energy conservation of new blast furnace cinder and disappears white device, the dirt of environment caused by steam of flushing cinder can be effectively reduced
Dye, and it is able to achieve recycling for the energy.
Summary of the invention
In order to improve the white efficiency that disappears of blast furnace grain slag system filtering ponds steam.The present invention provides a kind of blast furnace cinder granulations
Energy conservation disappear white equipment, the granulated energy conservation of the blast furnace cinder white equipment that disappears effectively reduces the discharge of filtering ponds sulfur-bearing steam, realizes
The energy recycles.
The present invention solves technological invention used by its technical problem: a kind of granulated energy conservation of blast furnace cinder disappears white set
It is standby, including it is granulated tower and high-altitude chimney, the top for being granulated tower is connect by jet chimney with high-altitude chimney, and the lower part for being granulated tower is logical
The first slag-water slurry pipeline is crossed to connect with high-altitude chimney.
Be granulated in tower and be equipped with granulator, granulator is located at the lower section of the high-temperature slag entrance of granulation tower, granulation water energy it is enough from
Granulator enters in granulation tower.
The bottom of granulation tower is connected with conveying water inlet pipe road, and the water outlet in the conveying water inlet pipe road is located at granulator
Lower section.
Heat exchanger is equipped in the top of granulator, heat exchanger is between granulator and jet chimney.
Spray equipment, foam removal and back purge system are disposed in the chimney of high-altitude from bottom to top.
Jet chimney is located at the lower section with spray equipment.
Spray equipment can will be granulated steam non-condensing in tower and become condensed water and fall into smoke aloft together with shower water
The bottom of chimney.
Demister can eliminate non-condensing steam and small water droplet, and back purge system can periodically recoil to demister
It washes.
Spray equipment contains circumferential uniformly alternately arranged long spray gun and short spray gun, long spray gun and the short spray along high-altitude chimney
Multiple high-pressure nozzles have been evenly arranged on rifle.
Jet chimney is equipped with air-introduced machine, and high-altitude chimney is externally connected with the second slag-water slurry pipeline.
The beneficial effects of the present invention are:
1, the invention proposes the white measure that disappears sprayed afterwards that first exchanges heat, the white effect that disappears is good, can effectively reduce environmental pollution.
2, the present invention can make full use of the steam thermal energy during slag granulating, reduce energy waste.
3, energy conservation proposed by the present invention disappears, and white system structure is simple, equipment dependability is high.
Detailed description of the invention
The accompanying drawings constituting a part of this application is used to provide further understanding of the present invention, and of the invention shows
Examples and descriptions thereof are used to explain the present invention for meaning property, does not constitute improper limitations of the present invention.
Fig. 1 is that the granulated energy conservation of blast furnace cinder disappears the side view of white equipment.
Fig. 2 is high-pressure spray gun and spray head deployment scenarios top view.
1, it is granulated tower；2, heat exchanger；3, granulator；4, air-introduced machine；5, jet chimney；6, the first slag-water slurry pipeline；
7, high-altitude chimney；8, back purge system；9, demister；10, spray equipment；11, the second slag-water slurry pipeline；12, long spray gun；
13, short spray gun；14, high-pressure nozzle.
Specific embodiment
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase
Mutually combination.The present invention will be described in detail below with reference to the accompanying drawings and embodiments.
A kind of granulated energy conservation of blast furnace cinder disappears white equipment, including granulation tower 1 and high-altitude chimney 7, and the top of granulation tower 1 is logical
It crosses jet chimney 5 to connect with high-altitude chimney 7, the lower part of granulation tower 1 is connected by the first slag-water slurry pipeline 6 with high-altitude chimney 7
It connects, jet chimney 5 and the first slag-water slurry pipeline 6 can be in a horizontal state, as shown in Figure 1.
In the present embodiment, jet chimney 5 is equipped with air-introduced machine 4, and high-altitude chimney 7 is externally connected with the second slag-water slurry pipe
Road 11.Be granulated in tower 1 and be equipped with granulator 3, granulator 3 is located at the lower section of the high-temperature slag entrance of granulation tower 1, granulation water energy it is enough from
Granulator 3 enters in granulation tower 1.The bottom of granulation tower 1 is connected with conveying water inlet pipe road, the water outlet in the conveying water inlet pipe road
Mouth is located at the lower section of granulator 3.
Granulator 3 is set below the entrance of granulation 1 high-temperature slag of tower, and high-temperature slag is granulated the effect of water in a large amount of high speeds
Lower completion granulation, slag-water slurry fall into granulation 1 bottom of tower.It is granulated 1 bottom of tower and introduces conveying water, under the action of conveying water,
Slag-water slurry enters 7 bottom of high-altitude chimney.
In the present embodiment, heat exchanger 2 is equipped in the top of granulator 3, heat exchanger 2 is located at granulator 3 and jet chimney 5
Between.Heat exchanger 2 is set at the top of granulation tower 1 in the top of granulator 3,5 He of jet chimney is arranged in granulation top of tower side
Air-introduced machine 4.Under the action of air-introduced machine 4, the steam generated during slag granulating is in granulation tower moved upward inside, steam warp
When crossing heat exchanger 2, the normal-temperature water for being introduced into heat exchanger, which absorbs a large amount of thermal energy, becomes hot water, and a large amount of steam condense in heat transfer process
Granulation 1 bottom of tower is fallen into for water droplet.Non-condensing steam enters high-altitude chimney 7 from the jet chimney 5 of granulation 1 top-side of tower.
In the present embodiment, spray equipment 10, demister 9 and backwash are disposed in high-altitude chimney 7 from bottom to top
Device 8.Jet chimney 5 is located at the lower section with spray equipment 10, one or more layers can be set in spray equipment 10.Spray equipment 10
Steam non-condensing in tower 1 can will be granulated to become condensed water and fall into the bottom of high-altitude chimney 7 together with shower water.
In the present embodiment, demister 9 can eliminate non-condensing steam and small water droplet, and back purge system 8 can be regular
Demister 9 is backwashed.Spray equipment 10 contains along the circumferential uniformly alternately arranged long spray gun 12 of high-altitude chimney 7 and short
Spray gun 13 has been evenly arranged multiple high-pressure nozzles 14 on long spray gun 12 and short spray gun 13, as shown in Figure 2.
Specifically, spray equipment 10 is by multiple long spray guns 12 that uniform crossover is arranged on sustained height inside the chimney of high-altitude
It is formed with short spray gun 13, is evenly arranged multiple high-pressure nozzles 14 on long spray gun and short spray gun.It, can be in difference according to process requirements
The long spray gun 12 and short spray gun 13 and its subsidiary high-pressure nozzle 14 of arrangement many levels in height.Shower water is from high-pressure nozzle 14
Spray pattern is formed after ejection inside high-altitude chimney 7, the shower water of atomization is uniformly covered with high-altitude chimney inner space.
After non-condensing steam enters high-altitude chimney 7, become condensed water, condensed water and spray under the action of atomizing spray water
Water drenching falls into 7 bottom of high-altitude chimney together.Demister 9 is arranged above spray equipment 10, eliminates non-condensing steam and little Shui
Drop；Back purge system 8 periodically backwashes demister 9, is blocked after avoiding demister 9 from being used for a long time.Draw from granulation tower 1
After slag-water slurry out enters high-altitude chimney 7, from the second slag-water slurry together with the condensed water of chimney bottom and shower water
Pipeline 11 enters filtering ponds.
In addition, being capable of forming enough negative pressure if high-altitude chimney 7 has enough height and drawing in granulation tower 1 and do not coagulate
The steam of knot can then be not provided with air-introduced machine 4.
The above, only specific embodiments of the present invention cannot limit the range that invention is implemented with it, so it is equivalent
The displacement of component, or according to equivalent variations made by the invention patent protection scope and modification, should all still fall within what this patent was covered
Scope.In addition, between technical characteristic and technical characteristic in the present invention, between technical characteristic and technological invention, technological invention with
Use can be freely combined between technological invention.
Claims (10)
- The white equipment 1. a kind of granulated energy conservation of blast furnace cinder disappears, which is characterized in that the granulated energy conservation of blast furnace cinder disappears white set Standby includes granulation tower (1) and high-altitude chimney (7), and the top of granulation tower (1) is connect by jet chimney (5) with high-altitude chimney (7), The lower part of granulation tower (1) is connect by the first slag-water slurry pipeline (6) with high-altitude chimney (7).
- The white equipment 2. the granulated energy conservation of blast furnace cinder according to claim 1 disappears, which is characterized in that set in granulation tower (1) Have granulator (3), granulator (3) is located at the lower section of the high-temperature slag entrance of granulation tower (1), and granulation water energy is enough from granulator (3) Into in granulation tower (1).
- The white equipment 3. the granulated energy conservation of blast furnace cinder according to claim 2 disappears, which is characterized in that the bottom of granulation tower (1) Portion is connected with conveying water inlet pipe road, and the water outlet in the conveying water inlet pipe road is located at the lower section of granulator (3).
- The white equipment 4. the granulated energy conservation of blast furnace cinder according to claim 2 disappears, which is characterized in that granulator (3) it is upper Heat exchanger (2) are equipped in portion, heat exchanger (2) is located between granulator (3) and jet chimney (5).
- The white equipment 5. the granulated energy conservation of blast furnace cinder according to claim 1 disappears, which is characterized in that in high-altitude chimney (7) It is disposed with spray equipment (10), demister (9) and back purge system (8) from bottom to top.
- The white equipment 6. the granulated energy conservation of blast furnace cinder according to claim 5 disappears, which is characterized in that jet chimney (5) position In the lower section with spray equipment (10).
- The white equipment 7. the granulated energy conservation of blast furnace cinder according to claim 5 disappears, which is characterized in that spray equipment (10) energy Steam non-condensing in tower (1) will be enough granulated to become condensed water and fall into the bottom of high-altitude chimney (7) together with shower water.
- The white equipment 8. the granulated energy conservation of blast furnace cinder according to claim 5 disappears, which is characterized in that demister (9) can Non-condensing steam and small water droplet are eliminated, back purge system (8) can periodically backwash demister (9).
- The white equipment 9. the granulated energy conservation of blast furnace cinder according to claim 5 disappears, which is characterized in that spray equipment (10) contains There are circumferential uniformly alternately arranged long spray gun (15) and short spray gun (16), long spray gun (15) and the short spray gun along high-altitude chimney (7) (16) multiple high-pressure nozzles (17) have been evenly arranged on.
- The white equipment 10. the granulated energy conservation of blast furnace cinder according to claim 1 disappears, which is characterized in that on jet chimney (5) Equipped with air-introduced machine (4), high-altitude chimney (7) is externally connected with the second slag-water slurry pipeline (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811610055.9A CN109439817B (en) | 2018-12-27 | 2018-12-27 | Energy-saving and white-eliminating equipment for granulating blast furnace slag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811610055.9A CN109439817B (en) | 2018-12-27 | 2018-12-27 | Energy-saving and white-eliminating equipment for granulating blast furnace slag |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109439817A true CN109439817A (en) | 2019-03-08 |
| CN109439817B CN109439817B (en) | 2023-12-08 |
Family
ID=65538221
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811610055.9A Active CN109439817B (en) | 2018-12-27 | 2018-12-27 | Energy-saving and white-eliminating equipment for granulating blast furnace slag |
Country Status (1)
| Country | Link |
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| CN (1) | CN109439817B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110975497A (en) * | 2019-12-25 | 2020-04-10 | 中冶京诚工程技术有限公司 | Method for eliminating white matter of blast furnace slag bottom filtering system |
| CN112495069A (en) * | 2020-11-20 | 2021-03-16 | 朱伯麟 | Foam catching device for purifying liquid sulfur foams in hydrogen sulfide gas |
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|---|---|---|---|---|
| CN101265039A (en) * | 2008-04-25 | 2008-09-17 | 中冶京诚工程技术有限公司 | Environment-friendly type bottom filter process blast furnace slag treatment device and treatment method |
| KR20120033086A (en) * | 2010-09-29 | 2012-04-06 | 현대제철 주식회사 | Method and apparatus for cooling of slag |
| CN104278116A (en) * | 2013-07-11 | 2015-01-14 | 北京亿玮坤节能科技有限公司 | Blast furnace slag steam recovery method and system |
| CN108411055A (en) * | 2018-05-18 | 2018-08-17 | 天津华赛尔传热设备有限公司 | A kind of blast furnace slag flushing steam disappears white system |
| CN109022647A (en) * | 2018-08-08 | 2018-12-18 | 北京钢元工程技术有限公司 | A kind of bottom filter method Water ramjet+ and process |
| CN209352936U (en) * | 2018-12-27 | 2019-09-06 | 中冶京诚工程技术有限公司 | A kind of granulated energy conservation of blast furnace cinder disappears white equipment |
-
2018
- 2018-12-27 CN CN201811610055.9A patent/CN109439817B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101265039A (en) * | 2008-04-25 | 2008-09-17 | 中冶京诚工程技术有限公司 | Environment-friendly type bottom filter process blast furnace slag treatment device and treatment method |
| KR20120033086A (en) * | 2010-09-29 | 2012-04-06 | 현대제철 주식회사 | Method and apparatus for cooling of slag |
| CN104278116A (en) * | 2013-07-11 | 2015-01-14 | 北京亿玮坤节能科技有限公司 | Blast furnace slag steam recovery method and system |
| CN108411055A (en) * | 2018-05-18 | 2018-08-17 | 天津华赛尔传热设备有限公司 | A kind of blast furnace slag flushing steam disappears white system |
| CN109022647A (en) * | 2018-08-08 | 2018-12-18 | 北京钢元工程技术有限公司 | A kind of bottom filter method Water ramjet+ and process |
| CN209352936U (en) * | 2018-12-27 | 2019-09-06 | 中冶京诚工程技术有限公司 | A kind of granulated energy conservation of blast furnace cinder disappears white equipment |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110975497A (en) * | 2019-12-25 | 2020-04-10 | 中冶京诚工程技术有限公司 | Method for eliminating white matter of blast furnace slag bottom filtering system |
| CN110975497B (en) * | 2019-12-25 | 2021-09-03 | 中冶京诚工程技术有限公司 | Method for eliminating white matter of blast furnace slag bottom filtering system |
| CN112495069A (en) * | 2020-11-20 | 2021-03-16 | 朱伯麟 | Foam catching device for purifying liquid sulfur foams in hydrogen sulfide gas |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109439817B (en) | 2023-12-08 |
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