EP0182511A1 - The assembly of a blast furnace shell - Google Patents
The assembly of a blast furnace shell Download PDFInfo
- Publication number
- EP0182511A1 EP0182511A1 EP85307655A EP85307655A EP0182511A1 EP 0182511 A1 EP0182511 A1 EP 0182511A1 EP 85307655 A EP85307655 A EP 85307655A EP 85307655 A EP85307655 A EP 85307655A EP 0182511 A1 EP0182511 A1 EP 0182511A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- shell
- parts
- furnace
- support surface
- annular
- 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.)
- Withdrawn
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B7/00—Blast furnaces
Definitions
- Blast furnaces consist of an outer metal shell of generally cylindrical form arranged with its longitudinal axis vertical and with a lining of refractory material.
- the lining is fitted inside the cylindrical shell after the shell has been constructed.
- it has been usual to construct the shell by positioning the base of the shell on its foundation and welding curved metal plates in turn on to the base to form an annular section upstanding from the base. Further plates are welded in turn on to the previously formed section to form a second annular section. This is repeated until the entire shell has been assembled.
- the part which constitutes the uppermost part of the assembled shell is located on a support surface and is attached to a lifting beam on a lifting tower structure; the lifting beam is jacked upwardly relative to the tower structure to raise the part from the support surface for a distance sufficient to allow a second annular part of the shell to be positioned on the support surface beneath the raised uppermost part; the two parts are connected together one beneath the other; the lifting beam is jacked upwardly relative to the tower structure to raise the connected parts from the support surface for a distance sufficient to allow a third annular part to be positioned on the support surface beneath the raised connected parts; and the third annular part is connected to the raised connected parts; the steps being repeated until all the annular parts have been connected together to form the shell.
- the annular parts can be formed away from the site and this simplifies the construction of these parts.
- the part which is positioned on the support surface is connected to the part or parts raised above it, this simplifies the connection process since it takes place at a fixed position.
- the lifting tower structure may be a structure which is erected around the foundation of the blast furnace while the shell is assembled and, thereafter, is removed, or it may form part of the furnace tower which is already positioned on the foundation, particularly when the shell is of a re-built furnace.
- Figures 1 and 2 illustrate the assembly of the shell of a blast furnace where the shell is for a re-built furnace on an existing foundation.
- the existing furnace foundation is referred to by reference numeral 1 and the shell is to be assembled within an existing furnace tower 3.
- the foundation 1 may be used as a support surface on which the parts of the shell are assembled but, alternatively, the hearth of the furnace, indicated by reference 5, can be positioned in place on the foundation 1 and a support surface 7 temporarily erected on the top of the hearth.
- a slideway 9 projects from the surface 7 to one side of the furnace.
- a lifting tower structure 11, of the type disclosed in British Patent No. 2053150, has a pair of masts 13 and a lifting beam,15 extending between the masts.
- the beam is jacked upwardly relative to the tower structure by means not shown.
- the lifting tower structure is erected outside the furnace tower 3.
- the annular part 17 of the shell which constitutes the uppermost part of the assembled shell is located on the slideway 9 and is slid on to the support surface 7. In this position, it is connected to the beam 15 and the beam is jacked up relative to the masts 13 through a distance which is sufficient to enable the next annular part 19, which has previously been located on the slideway, to be pushed to a position on the support surface in which it is beneath the raised part 17. In this position, the part 19 is connected by welding to the part 17 so as to be positioned beneath it. The lifting beam 15 is then raised further to lift up the connected parts 17, 19 sufficiently to enable the next annular part 21 to be slid along the slideway 9 to the support surface beneath the raised parts 17, 19.
- the part 21 is then welded to the lower edge of the part 19 to form three connected parts. This method is repeated until all the annular parts of the shell have been positioned in turn on the support surface 7 and welded to the raised parts immediately above it. The entire shell is thus assembled. Once the assembly is completed, the lifting tower structure is dismantled along with the slideway 9.
- the shell is of a re-built blast furnace and the existing furnace tower 33 is sufficiently robust to be able to support the waight of the assepeled shell.
- the masts of the lifting tower structure it is not necessary for the masts of the lifting tower structure to be positioned outside the furnace tower, but shorter masts 35 can be assembled on the top of the furnace tower.
- a lifting beam 37 extends between the masts and is raised relative to the masts by jacking means not shown.
- the annular part of the shell which constitutes the uppermost part of the shell is indicated by reference numeral 39 and is located on a support surface 41.
- the part 39 is connected by way of cables 43 to the lifting beam 37.
- the next annular part of the shell is carried by a movabl e 1 i fti ng structure 45 on to a slideway 47 which extends to the support surface 41 and, after the first part 39 has been raised sufficiently high, the second part is slid beneath the first part and is welded to the underside thereof.
- the two connected parts are then lifted by way of the lifting beam sufficiently to allow the next annular part to be moved along the slideway 47 to a position between the raised parts and for it to be welded to the underside of the raised parts.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Working Measures On Existing Buildindgs (AREA)
- Blast Furnaces (AREA)
Abstract
A method of assembling or reconstructing a blast furnace shell comprising a plurality of annular parts, in which the topmost part is positioned on a support surface, and is then jacked up until the next part can be slid beneath it and the two parts welded together. The connected parts are then jacked up and the process continued until the assembly is complete.
Description
- Blast furnaces consist of an outer metal shell of generally cylindrical form arranged with its longitudinal axis vertical and with a lining of refractory material. The lining is fitted inside the cylindrical shell after the shell has been constructed. Heretofore, it has been usual to construct the shell by positioning the base of the shell on its foundation and welding curved metal plates in turn on to the base to form an annular section upstanding from the base. Further plates are welded in turn on to the previously formed section to form a second annular section. This is repeated until the entire shell has been assembled.
- It will be appreciated that this is a relatively slow method of assembling the shell since the welds are produced on site and the welds are progressively formed at higher levels from the ground and, thus, safety of the welding operators and their equipment becomes more and more important.
- When a blast furnace is being re-built on an existing foundation it is most essential that the rebuild takes place as quickly as possible since it means that, while the furnace is out of action, the loss of iron is a financial burden to the furnace operator.
- It is an object of the present invention to provide a method of assembling the shell of a blast furnace which enables the shell to be assembled faster than the method referred to above.
- According to the present invention, in a method of assembling the generally cylindrical shell of a blast furnace from at least three annular parts, the part which constitutes the uppermost part of the assembled shell is located on a support surface and is attached to a lifting beam on a lifting tower structure; the lifting beam is jacked upwardly relative to the tower structure to raise the part from the support surface for a distance sufficient to allow a second annular part of the shell to be positioned on the support surface beneath the raised uppermost part; the two parts are connected together one beneath the other; the lifting beam is jacked upwardly relative to the tower structure to raise the connected parts from the support surface for a distance sufficient to allow a third annular part to be positioned on the support surface beneath the raised connected parts; and the third annular part is connected to the raised connected parts; the steps being repeated until all the annular parts have been connected together to form the shell.
- The annular parts can be formed away from the site and this simplifies the construction of these parts. When the part which is positioned on the support surface is connected to the part or parts raised above it, this simplifies the connection process since it takes place at a fixed position.
- The lifting tower structure may be a structure which is erected around the foundation of the blast furnace while the shell is assembled and, thereafter, is removed, or it may form part of the furnace tower which is already positioned on the foundation, particularly when the shell is of a re-built furnace.
- As the furnace shell is formed from a limited number of annular parts, and since all but the last annular part are lifted on the last jacking operation, the load whi ch has to be lifted is approachi ng the total weight of the blast furnace shell. To this end, a truck mounted crane or a tower crane having a boom arm is not usually capable of carrying such loads and the loads have to be lifted by a lifting beam jacked up a lifting tower structure. Such a device is described and claimed in British Patent No. 2053150.
- In order that the invention may be more readily understood, it will now be described, by way of example only, with reference the accompanying drawings, in which:-
- Figures 1 and 2 are diagrammatic side elevations, mutually at right angles, illustrating the assembly of a blast furnace shell in accordance with one embodiment of the invention; and
- Figures 3 and 4 are diagrammatic side elevations, mutually at right angles, of apparatus employing an alternative embodiment of the invention.
- Figures 1 and 2 illustrate the assembly of the shell of a blast furnace where the shell is for a re-built furnace on an existing foundation. The existing furnace foundation is referred to by
reference numeral 1 and the shell is to be assembled within an existingfurnace tower 3. Thefoundation 1 may be used as a support surface on which the parts of the shell are assembled but, alternatively, the hearth of the furnace, indicated by reference 5, can be positioned in place on thefoundation 1 and asupport surface 7 temporarily erected on the top of the hearth. Aslideway 9 projects from thesurface 7 to one side of the furnace. - A
lifting tower structure 11, of the type disclosed in British Patent No. 2053150, has a pair ofmasts 13 and a lifting beam,15 extending between the masts. The beam is jacked upwardly relative to the tower structure by means not shown. The lifting tower structure is erected outside thefurnace tower 3. - The
annular part 17 of the shell which constitutes the uppermost part of the assembled shell is located on theslideway 9 and is slid on to thesupport surface 7. In this position, it is connected to thebeam 15 and the beam is jacked up relative to themasts 13 through a distance which is sufficient to enable the nextannular part 19, which has previously been located on the slideway, to be pushed to a position on the support surface in which it is beneath the raisedpart 17. In this position, thepart 19 is connected by welding to thepart 17 so as to be positioned beneath it. Thelifting beam 15 is then raised further to lift up the connectedparts annular part 21 to be slid along theslideway 9 to the support surface beneath the raisedparts part 21 is then welded to the lower edge of thepart 19 to form three connected parts. This method is repeated until all the annular parts of the shell have been positioned in turn on thesupport surface 7 and welded to the raised parts immediately above it. The entire shell is thus assembled. Once the assembly is completed, the lifting tower structure is dismantled along with theslideway 9. - In the arrangement shown in Figures 3 and 4, the shell is of a re-built blast furnace and the existing
furnace tower 33 is sufficiently robust to be able to support the waight of the assepeled shell. 1- this end, it is not necessary for the masts of the lifting tower structure to be positioned outside the furnace tower, butshorter masts 35 can be assembled on the top of the furnace tower. Alifting beam 37 extends between the masts and is raised relative to the masts by jacking means not shown. - The annular part of the shell which constitutes the uppermost part of the shell is indicated by
reference numeral 39 and is located on asupport surface 41. Thepart 39 is connected by way ofcables 43 to thelifting beam 37. The next annular part of the shell is carried by a movabl e 1 ifti ng structure 45 on to aslideway 47 which extends to thesupport surface 41 and, after thefirst part 39 has been raised sufficiently high, the second part is slid beneath the first part and is welded to the underside thereof. The two connected parts are then lifted by way of the lifting beam sufficiently to allow the next annular part to be moved along theslideway 47 to a position between the raised parts and for it to be welded to the underside of the raised parts. These steps are continued until the entire shell has been assembled. Thereafter, themasts 35 are dismantled and removed from thefurnace tower 33.
Claims (5)
1. A method of assembling the generally cylindrical shell of a blast furnace from at least three annular parts, the method comprising :
(a) erecting a lifting tower structure including a lifting beam, over the assembly position;
(b) positioning a first annular part of the shell on a support surface at the assembly position;
(c) attaching the said first part to the lifting beam;
(d) jacking up the lifting beam, relative to the tower structure, so as to raise the said first part sufficiently far from the surface to allow a second annular part of the shell to be positioned beneath the first;
(e) connecting the first and second parts together;
(f) jacking up the lifting beam relative to the structure so as to raise the connected parts from the support surface by a distance sufficient to allow a third annular part to be positioned on the support surface below the connected parts;
(g) connecting the third annular part to the already connected parts; and
(h) repeating steps (b) to (e) for each successive part until the shell has been completed.
2. A method according to claim 1 in which the said parts are connected by welding.
3. A method according to claim 1 or claim 2 in which the lifting tower structure is erected outside the furnace tower which is to enclose the completed furnace.
4. A method according to claim 1 or claim 2 in which the lifting tower structure is formed by mounting a mast assembly on top of the furnace tower which is to enclose the completed furnace.
5. A method according to any preceding claim in which the successive annular parts are moved into position by means of a slideway adjacent the said support surface.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB848427357A GB8427357D0 (en) | 1984-10-30 | 1984-10-30 | Assembly of blast furnace shell |
GB8427357 | 1984-10-30 |
Publications (1)
Publication Number | Publication Date |
---|---|
EP0182511A1 true EP0182511A1 (en) | 1986-05-28 |
Family
ID=10568939
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP85307655A Withdrawn EP0182511A1 (en) | 1984-10-30 | 1985-10-23 | The assembly of a blast furnace shell |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0182511A1 (en) |
ES (1) | ES8701963A1 (en) |
GB (1) | GB8427357D0 (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3743745C1 (en) * | 1987-12-23 | 1989-05-03 | Kloeckner Stahl Gmbh | Method for constructing a shaft furnace, and shaft furnace |
EP1041162A1 (en) * | 1999-03-31 | 2000-10-04 | Kawasaki Steel Corporation | Method of constructing a blast furnace body and lifting transfer apparatus |
EP1048741A1 (en) * | 1999-04-30 | 2000-11-02 | Kawasaki Steel Corporation | Method and apparatus for short-term relining or construction of blast furnace |
EP2172569A1 (en) * | 2007-08-09 | 2010-04-07 | Nippon Steel Engineering Co., Ltd | Ring block conveying apparatus, and remedy method for blast furnace casing |
EP2305840A1 (en) * | 2008-07-31 | 2011-04-06 | JFE Steel Corporation | Method for constructing and repairing body of blast furnace |
US10678139B2 (en) | 2003-06-09 | 2020-06-09 | Asml Netherlands B.V. | Lithographic apparatus and device manufacturing method |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5252808A (en) * | 1975-10-27 | 1977-04-28 | Ishikawajima Harima Heavy Ind Co Ltd | Method of intallation of blast furnace |
FR2326471A1 (en) * | 1975-10-02 | 1977-04-29 | Sankyu Kk | CONSTRUCTION PROCESS OF A HIGH FURNACE |
JPS5387906A (en) * | 1977-01-13 | 1978-08-02 | Nippon Steel Corp | Dismantling method for furnace body of blast furnace |
JPS5387907A (en) * | 1977-01-13 | 1978-08-02 | Nippon Steel Corp | Repairing method for blast furnace |
JPS5457408A (en) * | 1977-10-18 | 1979-05-09 | Ishikawajima Harima Heavy Ind Co Ltd | Constructing method for blast furnace |
-
1984
- 1984-10-30 GB GB848427357A patent/GB8427357D0/en active Pending
-
1985
- 1985-10-23 EP EP85307655A patent/EP0182511A1/en not_active Withdrawn
- 1985-10-30 ES ES549009A patent/ES8701963A1/en not_active Expired
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2326471A1 (en) * | 1975-10-02 | 1977-04-29 | Sankyu Kk | CONSTRUCTION PROCESS OF A HIGH FURNACE |
JPS5252808A (en) * | 1975-10-27 | 1977-04-28 | Ishikawajima Harima Heavy Ind Co Ltd | Method of intallation of blast furnace |
JPS5387906A (en) * | 1977-01-13 | 1978-08-02 | Nippon Steel Corp | Dismantling method for furnace body of blast furnace |
JPS5387907A (en) * | 1977-01-13 | 1978-08-02 | Nippon Steel Corp | Repairing method for blast furnace |
JPS5457408A (en) * | 1977-10-18 | 1979-05-09 | Ishikawajima Harima Heavy Ind Co Ltd | Constructing method for blast furnace |
Non-Patent Citations (4)
Title |
---|
PATENTS ABSTRACTS OF JAPAN, vol. 1, no. 91, 24th August 1977, page 1966 C 77; & JP - A - 52 52 808 (ISHIKAWAJIMA HARIMA JUKOGYO K.K.) 28-04-1977 * |
PATENTS ABSTRACTS OF JAPAN, vol. 2, no. 122, 13th October 1978, page 2445 C 78; & JP - A - 53 87 906 (SHIN NIPPON SEITETSU K.K.) 08-02-1978 * |
PATENTS ABSTRACTS OF JAPAN, vol. 2, no. 122, 13th October 1978, page 2445 C 78; & JP - A - 53 87 907 (SHIN NIPPON SEITETSU K.K.) 08-02-1978 * |
PATENTS ABSTRACTS OF JAPAN, vol. 3, no. 79 (C-51), 6th July 1979, page 162 C 51; & JP - A - 54 57 408 (ISHIKAWAJIMA HARIMA JUKOGYO K.K.) 05-09-1979 * |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3743745C1 (en) * | 1987-12-23 | 1989-05-03 | Kloeckner Stahl Gmbh | Method for constructing a shaft furnace, and shaft furnace |
EP1041162A1 (en) * | 1999-03-31 | 2000-10-04 | Kawasaki Steel Corporation | Method of constructing a blast furnace body and lifting transfer apparatus |
CN100354432C (en) * | 1999-03-31 | 2007-12-12 | 杰富意钢铁株式会社 | Construction method and exchanging apparatus for blast furnaces |
EP1048741A1 (en) * | 1999-04-30 | 2000-11-02 | Kawasaki Steel Corporation | Method and apparatus for short-term relining or construction of blast furnace |
US6260270B1 (en) | 1999-04-30 | 2001-07-17 | Kawasaki Steel Corporation | Method and apparatus for short-term relining or construction of blast furnace |
US6513789B2 (en) | 1999-04-30 | 2003-02-04 | Kawasaki Steel Corporation | Method and apparatus for short-term relining or construction of blast furnace |
US10678139B2 (en) | 2003-06-09 | 2020-06-09 | Asml Netherlands B.V. | Lithographic apparatus and device manufacturing method |
EP2172569A1 (en) * | 2007-08-09 | 2010-04-07 | Nippon Steel Engineering Co., Ltd | Ring block conveying apparatus, and remedy method for blast furnace casing |
EP2172569A4 (en) * | 2007-08-09 | 2010-12-08 | Nippon Steel Eng Co Ltd | Ring block conveying apparatus, and remedy method for blast furnace casing |
EP2305840A1 (en) * | 2008-07-31 | 2011-04-06 | JFE Steel Corporation | Method for constructing and repairing body of blast furnace |
EP2305840A4 (en) * | 2008-07-31 | 2014-04-23 | Jfe Steel Corp | Method for constructing and repairing body of blast furnace |
Also Published As
Publication number | Publication date |
---|---|
ES8701963A1 (en) | 1986-12-01 |
GB8427357D0 (en) | 1984-12-05 |
ES549009A0 (en) | 1986-12-01 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): DE GB IT SE |
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STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 19870129 |
|
RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: STOBBART, GEORGE HERBERT |