CN110592300A - Conveying system and method for blast furnace shell - Google Patents
Conveying system and method for blast furnace shell Download PDFInfo
- Publication number
- CN110592300A CN110592300A CN201910807814.9A CN201910807814A CN110592300A CN 110592300 A CN110592300 A CN 110592300A CN 201910807814 A CN201910807814 A CN 201910807814A CN 110592300 A CN110592300 A CN 110592300A
- Authority
- CN
- China
- Prior art keywords
- sliding
- furnace shell
- truss
- blast furnace
- track
- 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.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G35/00—Mechanical conveyors not otherwise provided for
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C13/00—Other constructional features or details
- B66C13/04—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack
- B66C13/08—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack for depositing loads in desired attitudes or positions
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B7/00—Blast furnaces
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D1/00—Casings; Linings; Walls; Roofs
- F27D1/0043—Floors, hearths
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D1/00—Casings; Linings; Walls; Roofs
- F27D2001/0046—Means to facilitate repair or replacement or prevent quick wearing
- F27D2001/005—Removable part or structure with replaceable elements
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- General Engineering & Computer Science (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
- Vertical, Hearth, Or Arc Furnaces (AREA)
Abstract
The invention relates to a transportation system and a method of a blast furnace shell, which comprises a material receiving platform arranged outside a casting house and a furnace body surrounding frame arranged at the periphery of the center of the furnace body frame of the casting house, wherein primary sliding tracks are arranged on the material receiving platform and the casting house platform, a sliding truss is arranged on the primary sliding track, a secondary sliding track is arranged above the sliding truss and the furnace body surrounding frame, the extending direction of the primary sliding track is intersected with the extending direction of the secondary sliding track, a sliding trolley is arranged on the sliding truss, and the sliding trolley transports the furnace shell from the material receiving platform to the installation position on the secondary sliding track through the primary sliding track. The invention has low construction cost and high safety.
Description
Technical Field
The invention relates to the technical field of blast furnace overhaul, in particular to a blast furnace shell conveying system and a blast furnace shell conveying method.
Background
The blast furnace is a widely used iron smelting device, the total weight of a large blast furnace reaches thousands of tons, the elevation of a furnace top system at the top of the large blast furnace reaches more than one hundred meters, and the blast furnace is difficult to construct due to high height and heavy weight when the blast furnace needs to be disassembled or assembled whenever heavy maintenance or new construction is carried out.
In order to overcome the problems, the chinese invention patent (CN 109097516A) discloses a construction method for replacing a blast furnace shell in a blast furnace overhaul project, which comprises the following steps: dividing a new blast furnace shell into a sectional combined structure, and arranging a lifting support frame and a pushing trolley on a pushing side frame of the new blast furnace outside a casting house; erecting a lifting device on a furnace top rigid frame, removing a plurality of layers of furnace body frame platforms on the moving side of an old furnace shell, the wall surface and the roof of a cast house on the moving side, building a moving channel of a new furnace shell, and removing the old blast furnace shell and an auxiliary structure of the blast furnace shell to be replaced; hoisting the lower half part of the new blast furnace shell by adopting a sequential installation method; and hoisting the upper half part of the new blast furnace shell by adopting a reverse loading method, and connecting the upper half part and the lower half part of the new blast furnace shell. Although the influence on the integral stability and the bearing capacity of the furnace body frame can be reduced, and the problem that a large crawler crane cannot enter the operation is solved, the integral stability is still not high due to the fact that the furnace body frame and the platform need to be dismantled, and in addition, the number of large hoisting machinery used is large, so that the construction cost is high, the benefit is low, and the safety degree is low.
Disclosure of Invention
Therefore, the technical problem to be solved by the invention is to overcome the problems of low stability, high construction cost and low safety in the prior art, thereby providing a transportation system and a transportation method of a blast furnace shell, which have high stability, low construction cost and high safety.
In order to solve the technical problem, the transportation system of the blast furnace shell comprises a material receiving platform arranged outside a cast house and a furnace body surrounding frame arranged at the periphery of the center of the furnace body frame of the cast house, wherein a primary sliding track is arranged on the material receiving platform and the cast house platform, a sliding truss is arranged on the primary sliding track, a secondary sliding track is arranged above the sliding truss and the furnace body surrounding frame, the extending direction of the primary sliding track is intersected with the extending direction of the secondary sliding track, a sliding vehicle is arranged on the sliding truss, and the sliding vehicle transports the furnace shell from the material receiving platform to the installation position on the secondary sliding track through the primary sliding track.
In one embodiment of the invention, the furnace shell further comprises a lifting device, the lifting device is arranged on the furnace top platform, and after the furnace shell is transported to the installation position on the secondary sliding rail by the sliding vehicle, the furnace shell is lifted and fixed by the lifting device.
In one embodiment of the invention, the skidding truss is connected with a first electric winch, and the skidding vehicle is connected with a second electric winch.
In one embodiment of the invention, the first electric hoist and the second electric hoist are both fixed on the cast house platform.
In one embodiment of the present invention, an extending direction of the primary slip track and an extending direction of the secondary slip track are perpendicular to each other.
In one embodiment of the invention, the secondary slip track is laid on the slip truss and the upper surface of the furnace body surrounding frame, and the secondary slip track laid on the slip truss and the secondary slip track laid on the furnace body surrounding frame are at the same elevation.
In one embodiment of the invention, a walking platform and a railing are arranged on the material receiving platform and the sliding trolley.
The invention also discloses a method for transporting the blast furnace shell, which utilizes the transporting system of the blast furnace shell to transport the furnace shell and comprises the following steps: hoisting the assembled furnace shell with the whole belt to a sliding vehicle on a sliding truss positioned on the material receiving platform; dragging a sliding truss to slide the furnace shell to an interface position of a frame around the furnace body to complete one-time sliding; the traction sliding vehicle slides the furnace shell from the interface position of the frame around the furnace body to the center direction of the furnace body frame, and transports the furnace shell to the installation position to complete secondary sliding; after the furnace shell is lifted and fixed, the sliding vehicle is drawn to return to the sliding truss at the frame interface position around the furnace body, and then the sliding truss is moved to the material receiving platform, so that one-time transportation of the furnace shell is completed.
In one embodiment of the invention, after one transportation of the furnace shell is completed, the steps S1 are repeated until the transportation of the whole furnace shell is completed.
In one embodiment of the invention, during the primary sliding, the sliding truss moves along a primary sliding track; and when the secondary sliding is carried out, the sliding vehicle moves along the secondary sliding track.
Compared with the prior art, the technical scheme of the invention has the following advantages:
the transportation system and the transportation method of the blast furnace shell integrally transport the whole and multiple furnace shells to the installation position, are convenient and quick, save a large amount of construction time for blast furnace overhaul, save large-scale hoisting machinery using machine shifts, greatly shorten the construction period and reduce the construction cost. In addition, the structural components related by the invention are manufactured and installed on site in a processing plant, and the whole set of transportation system is simple to install, flexible to operate, low in processing and installation cost and convenient to maintain.
Drawings
In order that the present disclosure may be more readily and clearly understood, reference is now made to the following detailed description of the embodiments of the present disclosure taken in conjunction with the accompanying drawings, in which
FIG. 1 is a schematic plan view of a transportation system for a blast furnace shell according to the present invention;
FIG. 2 is a schematic view of a one-time slip construction process of the present invention;
FIG. 3 is a schematic view of the secondary slip construction process of the present invention.
The specification reference numbers indicate: 10-furnace shell, 11-material receiving platform, 12-furnace body surrounding frame, 13-primary sliding track, 14-sliding truss, 15-secondary sliding track, 16-sliding vehicle, 17-lifting device, 18A-first electric winch and 18B-second electric winch.
Detailed Description
Example one
As shown in fig. 1, 2 and 3, the present embodiment provides a transportation system for a blast furnace shell, including a material receiving platform 11 disposed outside a casting house and a furnace body surrounding frame 12 disposed around the center of a furnace body frame of the casting house, wherein a primary sliding track 13 is disposed on the material receiving platform 11 and the casting house platform, a sliding truss 14 is disposed on the primary sliding track 13, a secondary sliding track 15 is disposed above the sliding truss 14 and the furnace body surrounding frame 12, an extending direction of the primary sliding track 13 intersects an extending direction of the secondary sliding track 15, a sliding cart 16 is disposed on the sliding truss 14, and the sliding cart 16 transports the furnace shell 10 from the material receiving platform 11 to an installation position on the secondary sliding track 15 via the primary sliding track 13.
This embodiment transportation system of blast furnace shell, including setting up the material platform 11 and putting frame 12 around the furnace body that sets up in cast house furnace body frame center that connects outside the cast house on the material platform 11 and the cast house platform is equipped with once sliding rail 13 once be equipped with sliding truss 14 on once sliding rail 13, sliding truss 14 can follow once sliding rail 13 moves sliding truss 14 with the top of frame 12 is equipped with secondary sliding rail 15 around the furnace body, just once sliding rail 13's extending direction with secondary sliding rail 15's extending direction is crossing, thereby has formed one set of blast furnace shell broken line transportation mode, be equipped with trolley 16 on sliding truss 14, trolley 16 can follow secondary sliding rail 15 moves, trolley 16 will the furnace shell follow connect material platform 11 via once sliding rail 13 transports installation position on the secondary sliding rail 15 Because the invention can integrally transport the whole furnace shell and a plurality of furnace shells to the installation position, the invention is convenient and fast, saves a large amount of construction time for blast furnace overhaul, saves the use of machine classes for large-scale hoisting machinery, greatly shortens the construction period and reduces the construction cost.
In this embodiment, the transportation system of blast furnace stove outer covering still includes hoisting device 17, hoisting device 17 sets up on the furnace roof platform, the car 16 that slides will the stove outer covering transports behind the installation position on the secondary track that slides, hoisting device 17 will the stove outer covering promotes fixedly to be favorable to practicing thrift the engineering time, accomplish single stove outer covering transportation.
The skidding truss 14 is connected with a first electric winch 18A so as to be beneficial to controlling the movement of the skidding truss 14 on the primary skidding track 13, and the skidding vehicle 16 is connected with a second electric winch 18B so as to be beneficial to controlling the movement of the skidding vehicle 16 on the secondary skidding track 15. Specifically, the first electric winch 18A and the sliding truss 14, and the second electric winch 18B and the sliding cart 16 are connected by connecting members. In addition, the first electric hoist 18A and the second electric hoist 18B are both fixed on the cast house platform.
In order to ensure that the furnace shell can be accurately transported to the installation position, the extension direction of the primary sliding rail 13 and the extension direction of the secondary sliding rail 15 are perpendicular to each other. In order to ensure the stability of the whole transportation process, the secondary sliding track 15 is laid on the upper surfaces of the sliding truss 14 and the furnace body surrounding frame 12, and the secondary sliding track laid on the sliding truss 14 and the secondary sliding track laid on the furnace body surrounding frame 12 are at the same elevation. Connect material platform 11 with be equipped with walking platform and railing on the car 16 that slides, wherein lay the checkered plate antiskid above the walking platform, set up the railing on the outside edge of walking platform, be favorable to fully guaranteeing constructor's safety.
Example two
As shown in fig. 1 and 2 and fig. 3, the present embodiment provides a method for transporting a blast furnace shell, which uses a transporting system of a blast furnace shell according to the first embodiment to transport a furnace shell 10, and comprises the following steps: step S1: hoisting the assembled furnace shell 10 with the whole belt to a sliding vehicle 16 on a sliding truss 14 on a material receiving platform 11; step S2: dragging a sliding truss 14 to slide the furnace shell 10 to an interface position of a furnace body surrounding frame 12 to complete one-time sliding; step S3: a traction sliding vehicle 16, which slides the furnace shell from the interface position of the furnace body surrounding frame 12 to the center direction of the furnace body frame, transports the furnace shell to the installation position, and completes the secondary sliding; step S4, after the furnace shell 10 is lifted and fixed, the sliding trolley 16 is drawn to return to the sliding truss 14 at the interface position of the frame 12 around the furnace body, and then the sliding truss 14 is moved to the receiving platform 11, so as to finish one-time transportation of the furnace shell 10.
In the transportation method of the blast furnace shell according to the embodiment, the furnace shell 10 is transported by using the transportation system of the blast furnace shell according to the first embodiment, and in the step S1, the assembled whole furnace shell 10 is hoisted to the sliding cart 16 on the sliding truss 14 on the material receiving platform 11, so that the whole furnace shell and the multiple furnace shells can be transported to the installation position integrally, the transportation method is convenient and fast, and a large amount of construction time is saved for the overhaul of the blast furnace; in the step S2, the sliding truss 14 is pulled to slide the furnace shell 10 to the interface position of the furnace body peripheral frame 12, so as to complete one-time sliding, which is beneficial to ensuring the transportation stability; in the step S3, the sliding cart 16 is drawn to slide the furnace shell from the interface position of the furnace body peripheral frame 12 to the furnace body frame center direction, and the furnace shell is transported to the installation position to complete the secondary sliding, thereby being beneficial to ensuring the transportation stability of the furnace shell 10; in the step S4, after the furnace shell 10 is lifted and fixed, the sliding cart 16 is drawn to return to the interface position of the furnace body surrounding frame 12, and then moved to the material receiving platform 11, so as to complete one-time transportation of the furnace shell 10.
Before step S1, the furnace shell 10 needs to be assembled into a whole-belt furnace shell on a ground platform; and simultaneously, a material receiving platform 11 outside a casting house, a sliding truss 14, a sliding vehicle 16, a primary sliding rail 13, a secondary sliding rail 15, a first electric winch 18A, a furnace body surrounding frame 12, a second electric winch 18B and a lifting device 17 are installed. In addition, after the device is installed, all the connecting points are checked and debugged, and after the debugging is completed, the sliding truss 14 and the sliding vehicle 14 are slid to the position of the material receiving platform 11 outside the cast house.
During the primary sliding, the sliding truss 14 moves along the primary sliding track 13, and as the sliding trolley 16 is placed on the sliding truss 14 and the furnace shell 10 is placed on the sliding trolley 16, the movement of the sliding truss 14 drives the furnace shell 10 to slide to the interface position of the furnace body surrounding frame 12; when sliding for the second time, the sliding vehicle 16 moves along the second sliding track 15, so that the furnace shell 10 on the sliding vehicle 16 slides from the first sliding stop position to the center direction of the furnace body frame, and when the furnace shell 10 slides to the installation position and stops, the second sliding is completed.
After the one-time transportation of the furnace shell 10 is completed, the step S1 is repeated until the transportation of the whole furnace shell 10 is completed, so that the operation is flexible, the processing and installation cost is low, and the maintenance is convenient. Specifically, after the furnace shell 10 reaching the central installation position of the furnace body frame (i.e. the position of the center line of the blast furnace) is lifted and fixed by the lifting device 17, the second electric winch 18B is started, the sliding vehicle 16 is pulled to move to the sliding truss 14 and be fixed on the sliding truss 14, then the first electric winch 18A is started, the sliding truss 14 is pulled to the position of the receiving platform 11 outside the casting yard, and single furnace shell transportation is completed; and repeating the first step to the fourth step until the transportation of the furnace shell 10 is finished.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.
Claims (10)
1. A transportation system of a blast furnace shell is characterized in that: including setting up the furnace body frame on every side that connects the material platform and put the setting around the cast house furnace body frame center outside the cast house, wherein connect and be equipped with once the track that slides on material platform and the cast house platform be equipped with the truss that slides on once sliding on the track the truss that slides with the top of frame is equipped with the secondary track that slides around the furnace body, just once slide orbital extending direction with the orbital extending direction of secondary slides is crossing, be equipped with the locomotive that slides on the truss that slides, the locomotive will the stove outer covering is followed connect the material platform via once the orbital transportation that slides arrives mounting position on the secondary track that slides.
2. The transport system for a blast furnace shell according to claim 1, characterized in that: the furnace shell lifting device is characterized by further comprising a lifting device, the lifting device is arranged on the furnace top platform, the sliding vehicle transports the furnace shell to the mounting position on the secondary sliding rail, and the lifting device lifts and fixes the furnace shell.
3. The transport system for a blast furnace shell according to claim 1, characterized in that: the sliding truss is connected with the first electric winch, and the sliding vehicle is connected with the second electric winch.
4. The transport system for a blast furnace shell according to claim 3, characterized in that: the first electric winch and the second electric winch are both fixed on the cast house platform.
5. The transport system for a blast furnace shell according to claim 1, characterized in that: the extending direction of the primary sliding rail is perpendicular to the extending direction of the secondary sliding rail.
6. The transport system for a blast furnace shell according to claim 1, characterized in that: the secondary track of sliding is laid the truss of sliding and the upper surface of frame around the furnace body, and is laid the secondary track of sliding on the truss of sliding with lay the secondary track of sliding on the frame around the furnace body is in same elevation.
7. The transport system for a blast furnace shell according to claim 1, characterized in that: the material receiving platform and the sliding vehicle are provided with a walking platform and a railing.
8. A method for transporting a blast furnace shell, by means of a transport system for a blast furnace shell according to any one of claims 1 to 7, characterized in that it comprises the steps of:
step S1: hoisting the assembled furnace shell with the whole belt to a sliding vehicle on a sliding truss positioned on the material receiving platform;
step S2: dragging a sliding truss to slide the furnace shell to an interface position of a frame around the furnace body to complete one-time sliding;
step S3: the traction sliding vehicle slides the furnace shell from the interface position of the frame around the furnace body to the center direction of the furnace body frame, and transports the furnace shell to the installation position to complete secondary sliding;
step S4: after the furnace shell is lifted and fixed, the sliding vehicle is drawn to return to the sliding truss at the frame interface position around the furnace body, and then the sliding truss is moved to the material receiving platform, so that one-time transportation of the furnace shell is completed.
9. The method for transporting a blast furnace shell according to claim 8, wherein: and after one transportation of the furnace shell is completed, repeating the step S1 until the transportation of the whole furnace shell is completed.
10. The method for transporting a blast furnace shell according to claim 8, wherein: during the primary sliding, the sliding truss moves along the primary sliding track; and when the secondary sliding is carried out, the sliding vehicle moves along the secondary sliding track.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910807814.9A CN110592300A (en) | 2019-08-29 | 2019-08-29 | Conveying system and method for blast furnace shell |
| JP2021515093A JP2022501499A (en) | 2019-08-29 | 2019-11-13 | Blast furnace furnace mantle transportation system and method |
| PCT/CN2019/117916 WO2021035974A1 (en) | 2019-08-29 | 2019-11-13 | Transportation system and method for blast furnace shell |
| KR1020217008027A KR20210046042A (en) | 2019-08-29 | 2019-11-13 | Furnace mantle transportation system and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910807814.9A CN110592300A (en) | 2019-08-29 | 2019-08-29 | Conveying system and method for blast furnace shell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110592300A true CN110592300A (en) | 2019-12-20 |
Family
ID=68856285
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910807814.9A Pending CN110592300A (en) | 2019-08-29 | 2019-08-29 | Conveying system and method for blast furnace shell |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP2022501499A (en) |
| KR (1) | KR20210046042A (en) |
| CN (1) | CN110592300A (en) |
| WO (1) | WO2021035974A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112139695A (en) * | 2020-09-24 | 2020-12-29 | 中国二十二冶集团有限公司 | Method for replacing middle section of blast furnace shell |
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| CN101688256A (en) * | 2007-08-09 | 2010-03-31 | 新日铁工程技术株式会社 | Ring block conveying apparatus, and remedy method for blast furnace casing |
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| CN103484585A (en) * | 2013-09-29 | 2014-01-01 | 天津二十冶建设有限公司 | Blast furnace large pre-building block furnace feeding device and method |
| CN204690024U (en) * | 2015-06-26 | 2015-10-07 | 中冶京诚工程技术有限公司 | Logistics transportation system in steel smelting industry |
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| CN208183010U (en) * | 2018-05-02 | 2018-12-04 | 安徽马钢设备检修有限公司 | A kind of roller bed device for last furnace shell passage |
| CN109097516A (en) * | 2018-09-29 | 2018-12-28 | 中国冶集团有限公司 | The construction method of blast furnace overhaul engineering replacement last furnace shell |
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2019
- 2019-08-29 CN CN201910807814.9A patent/CN110592300A/en active Pending
- 2019-11-13 JP JP2021515093A patent/JP2022501499A/en active Pending
- 2019-11-13 KR KR1020217008027A patent/KR20210046042A/en not_active Application Discontinuation
- 2019-11-13 WO PCT/CN2019/117916 patent/WO2021035974A1/en active Application Filing
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| CN101688256A (en) * | 2007-08-09 | 2010-03-31 | 新日铁工程技术株式会社 | Ring block conveying apparatus, and remedy method for blast furnace casing |
| CN202139243U (en) * | 2011-05-05 | 2012-02-08 | 天津二十冶建设有限公司 | Furnace shell installing and translating device for overhauling blast furnace |
| CN203238282U (en) * | 2013-05-05 | 2013-10-16 | 中国十九冶集团有限公司南京分公司 | Translation platform used for inverting furnace shell of blast furnace |
| CN107779530A (en) * | 2016-08-26 | 2018-03-09 | 上海宝冶集团有限公司 | The installation method of last furnace shell |
| CN107502690A (en) * | 2017-09-13 | 2017-12-22 | 中冶天工集团天津有限公司 | A kind of point of device and replacing options with integral replacing last furnace shell |
| CN108300825A (en) * | 2018-05-02 | 2018-07-20 | 安徽马钢设备检修有限公司 | A kind of roller bed device and its passage method for last furnace shell passage |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112139695A (en) * | 2020-09-24 | 2020-12-29 | 中国二十二冶集团有限公司 | Method for replacing middle section of blast furnace shell |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2021035974A1 (en) | 2021-03-04 |
| JP2022501499A (en) | 2022-01-06 |
| KR20210046042A (en) | 2021-04-27 |
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Application publication date: 20191220 |
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