US20130340874A1 - Method to repair compromised inlet outlet piping - Google Patents
Method to repair compromised inlet outlet piping Download PDFInfo
- Publication number
- US20130340874A1 US20130340874A1 US13/707,213 US201213707213A US2013340874A1 US 20130340874 A1 US20130340874 A1 US 20130340874A1 US 201213707213 A US201213707213 A US 201213707213A US 2013340874 A1 US2013340874 A1 US 2013340874A1
- Authority
- US
- United States
- Prior art keywords
- stave
- pipe
- annulus
- cooling
- uncured epoxy
- 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.)
- Abandoned
Links
- 238000000034 method Methods 0.000 title claims abstract description 28
- 230000008439 repair process Effects 0.000 title claims abstract description 23
- 230000001010 compromised effect Effects 0.000 title claims abstract description 15
- 238000001816 cooling Methods 0.000 claims abstract description 43
- 239000004593 Epoxy Substances 0.000 claims abstract description 30
- 239000000463 material Substances 0.000 claims abstract description 10
- 239000011440 grout Substances 0.000 claims description 7
- 238000004891 communication Methods 0.000 claims description 2
- 125000003700 epoxy group Chemical group 0.000 claims description 2
- 229920000647 polyepoxide Polymers 0.000 claims description 2
- 238000013022 venting Methods 0.000 claims description 2
- 238000011065 in-situ storage Methods 0.000 claims 1
- 230000007246 mechanism Effects 0.000 abstract description 4
- KUBDPQJOLOUJRM-UHFFFAOYSA-N 2-(chloromethyl)oxirane;4-[2-(4-hydroxyphenyl)propan-2-yl]phenol Chemical compound ClCC1CO1.C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 KUBDPQJOLOUJRM-UHFFFAOYSA-N 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 239000000498 cooling water Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000011819 refractory material Substances 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 238000007664 blowing Methods 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 235000019506 cigar Nutrition 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/16—Devices for covering leaks in pipes or hoses, e.g. hose-menders
- F16L55/162—Devices for covering leaks in pipes or hoses, e.g. hose-menders from inside the pipe
- F16L55/165—Devices for covering leaks in pipes or hoses, e.g. hose-menders from inside the pipe a pipe or flexible liner being inserted in the damaged section
- F16L55/1657—Devices for covering leaks in pipes or hoses, e.g. hose-menders from inside the pipe a pipe or flexible liner being inserted in the damaged section lengths of rigid pipe being inserted
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B7/00—Blast furnaces
- C21B7/10—Cooling; Devices therefor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/16—Devices for covering leaks in pipes or hoses, e.g. hose-menders
- F16L55/168—Devices for covering leaks in pipes or hoses, e.g. hose-menders from outside the pipe
- F16L55/175—Devices for covering leaks in pipes or hoses, e.g. hose-menders from outside the pipe by using materials which fill a space around the pipe before hardening
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/16—Devices for covering leaks in pipes or hoses, e.g. hose-menders
- F16L55/179—Devices for covering leaks in pipes or hoses, e.g. hose-menders specially adapted for bends, branch units, branching pipes or the like
-
- 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
- F27D1/12—Casings; Linings; Walls; Roofs incorporating cooling arrangements
-
- 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
- F27D9/00—Cooling of furnaces or of charges therein
Definitions
- the cooling stave of the blast furnace body is used to protect the furnace shell, provide cooling, support brick lining refractory material and maintain a proper furnace shape.
- the heat of refractory material is transferred to the cooling stave base, and the base transfers heat to a pipe carrying cooling water.
- the cooling water takes heat out of the furnace.
- One failure mode occurs when the pipeline fractures in the heat load.
- a first aspect of the application describes a repair method for a cooling stave utilized in a blast furnace, the cooling stave having a stave inlet outlet pipe attached to the cooling pipe in the cooling stave, the method comprising of the steps of: inserting a rigid pipe into the compromised stave inlet outlet pipe to form a first annulus; inflating a bladder disposed inside the inner pipe and cooling stave; injecting a first uncured epoxy material into the first annulus; permitting the first uncured epoxy to cure; and removing the bladder.
- a first end of the inner tube distal to the stave further comprises a means for introduction of the first uncured epoxy to the first annulus
- a second end of the inner tube proximal to the stave further comprises means for venting air displaced during injecting of a first uncured epoxy into the first annulus.
- the repair method further comprises the steps of: applying an outer pipe external to the compromised stave inlet outlet pipe to form a second annulus; injecting a second uncured epoxy material into the second annulus; and permitting the second uncured epoxy material to cure.
- the first and second uncured epoxies are cured concurrently.
- the first uncured epoxy is cured before the second uncured epoxy is cured.
- a first end of the outer tube distal to the stave further comprises a means for introduction of the second uncured epoxy to the second annulus
- a second end of the outer tube proximal to the stave further comprises a boot adapted to form seals with the outer tube and the stave, and the second end having an aperture in open communication with the second annulus
- a second aspect of the application describes a repair method for a cooling stave utilized in a blast furnace, the method comprised of the steps of: rethreading an aperture in the cooling stave formed after removal of a compromised stave inlet outlet pipe; installing a new inlet outlet pipe; inserting an inner rigid pipe into the new stave inlet outlet pipe to form an annulus; inflating a bladder inside the inner rigid pipe and the cooling stave; injecting an uncured epoxy material into the annulus; permitting the uncured epoxy to cure; and removing the bladder.
- a third aspect of the application describes a repair system kit for a cooling stave utilized in a blast furnace, the cooling stave having a stave inlet outlet pipe comprised of: an inflatable bladder; an inner rigid pipe; a grout inlet; and a vent tube.
- the repair system further comprises a concentric outer pipe; and a flexible rubber seal.
- FIG. 1 illustrates embodiments of elements of one aspect of the application.
- FIG. 2 illustrates further embodiments of elements of the application.
- FIG. 3 illustrates another aspect of the application.
- FIG. 4 illustrates existing stave failure mechanisms.
- FIG. 5 illustrates existing stave failure mechanisms.
- FIG. 6 illustrates existing stave failure mechanisms.
- the repair system utilizes an inflatable bladder 20 , a concentric inner rigid pipe 1 , a custom machined grout inlet 7 , vent tube 8 , and compression fitting 3 .
- inner rigid pipe 1 is inserted into the compromised stave pipe 27 .
- Inflatable bladder 20 is inserted into the inner rigid pipe 1 as far as stave 30 .
- the bladder 20 is inflated to a specified pressure and epoxy 15 is injected into the compromised stave inlet outlet pipe 27 and around the inner rigid pipe 1 via the grout inlet 7 in fitting 2 .
- the epoxy 15 is injected until the entire first annular gap 28 between the compromised stave inlet outlet pipe 27 and the inner rigid pipe 1 is filled.
- An optional vent tube 10 is positioned in the first annular gap 28 extending beyond the length of the first annular gap 28 allows for displaced air to escape.
- the epoxy 15 is injected it is cured.
- the bladder 20 is deflated and removed.
- the inner rigid pipe 1 is an epoxy pipe.
- an outer rigid pipe 5 may be positioned around the compromised stave pipe 27 .
- a grout inlet 7 is formed or attached through the outer rigid pipe 5 .
- a flexible seal 6 is fitted to an end of the outer rigid pipe 5 .
- the flexible seal 6 has an optional aperture 31 to allow for escape of displaced air.
- Epoxy 15 is injected until the entire second annular gap 29 between the compromised stave inlet outlet pipe 27 and the outer rigid pipe 5 is filled. After the epoxy 15 is injected it is cured.
- the outer rigid pipe 5 is an epoxy pipe.
- the compromised stave inlet outlet pipe 27 may first be removed from the stave 30 to give a resulting aperture.
- the resulting aperture is rethreaded and a new inlet outlet pipe is installed in the resulting aperture.
- the method steps of the first and second embodiments may then follow.
- stave inlet hoses may be reattached to the epoxy pipe 1 , in a preferred embodiment through an attached connector 4 and elbow 11 and the water circuit tested per plant procedures.
- a dowel rod 23 and pull rod 25 are used to assist in the insertion and removal of the bladder 20 .
- a repair system kit for a cooling stave utilized in a blast furnace having a compromised stave inlet outlet pipe comprised of an inflatable bladder 20 , a rigid inner pipe 1 ; a grout inlet 7 ; and a vent tube 8 .
- the repair system kit may further comprise rigid outer pipe 5 and flexible seal 6 .
- FIGS. 4-6 illustrate example staves 30 and stave inlet/outlet pipes 27 that may be repaired with the repair system and repair kit of the present application.
- FIG. 4 illustrates a weld or pipe fracture 50 caused by heating and cooling cycles
- FIG. 5 illustrates a pipe or weld fracture 50 caused by flow disruptions
- FIG. 6 illustrates a pipe or weld fracture 50 caused by plug washing.
- This method of repair allows the customer to reestablish water to a compromised water pipe without losing the cooling effects of the water in contact with the stave.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Blast Furnaces (AREA)
- Pipe Accessories (AREA)
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
Abstract
Description
- This application claims priority benefit under 35 U.S.C. §119(e) of U.S. Provisional Application No. 61/567,395, filed Dec. 6, 2011, the contents of which are herein incorporated by reference.
- The cooling stave of the blast furnace body is used to protect the furnace shell, provide cooling, support brick lining refractory material and maintain a proper furnace shape. In operation, the heat of refractory material is transferred to the cooling stave base, and the base transfers heat to a pipe carrying cooling water. The cooling water takes heat out of the furnace. One failure mode occurs when the pipeline fractures in the heat load.
- As pipe fractures are common, several existing methods were developed to reestablish cooling to the stave. These methods include blowing nitrogen through the stave, inserting a corrugated metal hose through the entire stave circuit and grouting around it with a lower conductivity grout, drilling through the blast furnace shell and stave to install cigar coolers, or grouting the inlet without cooling. The methods do not provide an effective means of cooling. The high stresses in the stave using these existing methods over time cause further damage to the stave. Damage includes the inlet outlet piping completely tearing from the stave, stave face washing, stave cupping or curving, and anchor bolts pulling from the stave.
- A first aspect of the application describes a repair method for a cooling stave utilized in a blast furnace, the cooling stave having a stave inlet outlet pipe attached to the cooling pipe in the cooling stave, the method comprising of the steps of: inserting a rigid pipe into the compromised stave inlet outlet pipe to form a first annulus; inflating a bladder disposed inside the inner pipe and cooling stave; injecting a first uncured epoxy material into the first annulus; permitting the first uncured epoxy to cure; and removing the bladder. In a preferred embodiment a first end of the inner tube distal to the stave further comprises a means for introduction of the first uncured epoxy to the first annulus, and a second end of the inner tube proximal to the stave further comprises means for venting air displaced during injecting of a first uncured epoxy into the first annulus. In a preferred embodiment the repair method further comprises the steps of: applying an outer pipe external to the compromised stave inlet outlet pipe to form a second annulus; injecting a second uncured epoxy material into the second annulus; and permitting the second uncured epoxy material to cure. In a preferred embodiment the first and second uncured epoxies are cured concurrently. In a preferred embodiment the first uncured epoxy is cured before the second uncured epoxy is cured. In a preferred embodiment a first end of the outer tube distal to the stave further comprises a means for introduction of the second uncured epoxy to the second annulus, and a second end of the outer tube proximal to the stave further comprises a boot adapted to form seals with the outer tube and the stave, and the second end having an aperture in open communication with the second annulus.
- A second aspect of the application describes a repair method for a cooling stave utilized in a blast furnace, the method comprised of the steps of: rethreading an aperture in the cooling stave formed after removal of a compromised stave inlet outlet pipe; installing a new inlet outlet pipe; inserting an inner rigid pipe into the new stave inlet outlet pipe to form an annulus; inflating a bladder inside the inner rigid pipe and the cooling stave; injecting an uncured epoxy material into the annulus; permitting the uncured epoxy to cure; and removing the bladder.
- A third aspect of the application describes a repair system kit for a cooling stave utilized in a blast furnace, the cooling stave having a stave inlet outlet pipe comprised of: an inflatable bladder; an inner rigid pipe; a grout inlet; and a vent tube. In a preferred embodiment the repair system further comprises a concentric outer pipe; and a flexible rubber seal.
-
FIG. 1 illustrates embodiments of elements of one aspect of the application. -
FIG. 2 illustrates further embodiments of elements of the application. -
FIG. 3 illustrates another aspect of the application. -
FIG. 4 illustrates existing stave failure mechanisms. -
FIG. 5 illustrates existing stave failure mechanisms. -
FIG. 6 illustrates existing stave failure mechanisms. - In the following detailed description, reference is made to the accompanying examples and figures that form a part hereof, and in which is shown, by way of illustration, specific embodiments in which the inventive subject matter may be practiced. These embodiments are described in sufficient detail to enable those skilled in the art to practice them, and it is to be understood that other embodiments may be utilized and that structural or logical changes may be made without departing from the scope of the inventive subject matter. Such embodiments of the inventive subject matter may be referred to, individually and/or collectively, herein by the term “invention” merely for convenience and without intending to voluntarily limit the scope of this application to any single invention or inventive concept if more than one is in fact disclosed. The following description is, therefore, not to be taken in a limited sense, and the scope of the inventive subject matter is defined by the appended claims and their equivalents.
- Improved, more effective methods to reestablish cooling to the stave are necessary. Referring to
FIGS. 1-3 , the repair system utilizes aninflatable bladder 20, a concentric innerrigid pipe 1, a custom machinedgrout inlet 7,vent tube 8, andcompression fitting 3. In a preferred embodiment of the first aspect, innerrigid pipe 1 is inserted into thecompromised stave pipe 27.Inflatable bladder 20 is inserted into the innerrigid pipe 1 as far asstave 30. Thebladder 20 is inflated to a specified pressure andepoxy 15 is injected into the compromised staveinlet outlet pipe 27 and around the innerrigid pipe 1 via thegrout inlet 7 infitting 2. Theepoxy 15 is injected until the entire firstannular gap 28 between the compromised staveinlet outlet pipe 27 and the innerrigid pipe 1 is filled. Anoptional vent tube 10 is positioned in the firstannular gap 28 extending beyond the length of the firstannular gap 28 allows for displaced air to escape. After theepoxy 15 is injected it is cured. When the curing is finished thebladder 20 is deflated and removed. In preferred embodiments, the innerrigid pipe 1 is an epoxy pipe. - In a second embodiment of the first aspect, an outer
rigid pipe 5 may be positioned around thecompromised stave pipe 27. Agrout inlet 7 is formed or attached through the outerrigid pipe 5. Aflexible seal 6 is fitted to an end of the outerrigid pipe 5. Theflexible seal 6 has an optional aperture 31 to allow for escape of displaced air. Epoxy 15 is injected until the entire secondannular gap 29 between the compromised staveinlet outlet pipe 27 and the outerrigid pipe 5 is filled. After theepoxy 15 is injected it is cured. In preferred embodiments, the outerrigid pipe 5 is an epoxy pipe. - In a third embodiment, the compromised stave
inlet outlet pipe 27 may first be removed from thestave 30 to give a resulting aperture. The resulting aperture is rethreaded and a new inlet outlet pipe is installed in the resulting aperture. The method steps of the first and second embodiments may then follow. - The repair being complete, stave inlet hoses may be reattached to the
epoxy pipe 1, in a preferred embodiment through an attachedconnector 4 andelbow 11 and the water circuit tested per plant procedures. - In some embodiments, a
dowel rod 23 andpull rod 25 are used to assist in the insertion and removal of thebladder 20. - In still another aspect of the invention, a repair system kit for a cooling stave utilized in a blast furnace, the cooling stave having a compromised stave inlet outlet pipe comprised of an
inflatable bladder 20, a rigidinner pipe 1; agrout inlet 7; and avent tube 8. The repair system kit may further comprise rigidouter pipe 5 andflexible seal 6. -
FIGS. 4-6 , illustrate example staves 30 and stave inlet/outlet pipes 27 that may be repaired with the repair system and repair kit of the present application. SpecificallyFIG. 4 illustrates a weld orpipe fracture 50 caused by heating and cooling cycles;FIG. 5 illustrates a pipe orweld fracture 50 caused by flow disruptions; andFIG. 6 illustrates a pipe orweld fracture 50 caused by plug washing. - This method of repair allows the customer to reestablish water to a compromised water pipe without losing the cooling effects of the water in contact with the stave.
- The epoxy system offers the following advantages over conventional repair methods:
- Improved cooling compared to other methods
- Can be installed in short outages
- Can be installed when the leak is found
- Able to use existing cooling circuits
- Lower stresses on staves
- Can repair both upper and lower inlets or washed plug welds
- Increased strength to the stave inlet outlet piping
- In the foregoing Detailed Description, various features are grouped together in a single embodiment to streamline the disclosure. This method of disclosure is not to be interpreted as reflecting an intention that the claimed embodiments of the invention require more features than are expressly recited in each claim. Rather, as the following claims reflect, inventive subject matter lies in less than all features of a single disclosed embodiment. Thus, the following claims are hereby incorporated into the Detailed Description, with each claim standing on its own as a separate embodiment.
- It should be understood that while this invention has been described herein in terms of specific embodiments set forth in detail, such embodiments are presented by way of illustration of the general principles of the invention, and the invention is not necessarily limited thereto. Certain modifications and variations in any given material, process step or chemical formula will be readily apparent to those skilled in the art without departing from the true spirit and scope of the present invention, and all such modifications and variations should be considered within the scope of the claims that follow.
Claims (9)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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US13/707,213 US20130340874A1 (en) | 2011-12-06 | 2012-12-06 | Method to repair compromised inlet outlet piping |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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US201161567395P | 2011-12-06 | 2011-12-06 | |
US13/707,213 US20130340874A1 (en) | 2011-12-06 | 2012-12-06 | Method to repair compromised inlet outlet piping |
Publications (1)
Publication Number | Publication Date |
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US20130340874A1 true US20130340874A1 (en) | 2013-12-26 |
Family
ID=47505309
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US13/707,213 Abandoned US20130340874A1 (en) | 2011-12-06 | 2012-12-06 | Method to repair compromised inlet outlet piping |
Country Status (12)
Country | Link |
---|---|
US (1) | US20130340874A1 (en) |
EP (1) | EP2788649A1 (en) |
KR (1) | KR20140097448A (en) |
CN (1) | CN103998847A (en) |
AR (1) | AR089188A1 (en) |
AU (1) | AU2012347750A1 (en) |
BR (1) | BR112014033170A2 (en) |
CA (1) | CA2858567A1 (en) |
IN (1) | IN2014CN04504A (en) |
MX (1) | MX2014006887A (en) |
RU (1) | RU2014127181A (en) |
WO (1) | WO2013086192A1 (en) |
Cited By (6)
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JP2015187288A (en) * | 2014-03-26 | 2015-10-29 | 新日鐵住金株式会社 | Device and method for repairing stave cooler pipe conduit |
KR101569612B1 (en) | 2014-04-14 | 2015-11-17 | 주식회사 포스코 | Apparatus and method for repairing stave cooling system for furnace |
KR101569616B1 (en) | 2014-04-15 | 2015-11-17 | 주식회사 포스코 | Apparatus and method for repairing stave cooling system for furnace |
CN114854913A (en) * | 2022-05-19 | 2022-08-05 | 宝武集团鄂城钢铁有限公司 | Method for repairing cooling vertical pipe jump connection in blast furnace |
CN114891940A (en) * | 2022-04-18 | 2022-08-12 | 大连科萌工程材料有限公司 | Method for hot-face grouting of blast furnace carbon brick |
CN114908205A (en) * | 2022-04-22 | 2022-08-16 | 北京科技大学 | Miniature cooler of blast furnace |
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KR101870708B1 (en) | 2016-12-05 | 2018-07-19 | 주식회사 포스코 | Block Structure, Container and Constructing Method for Block Structure |
KR101842579B1 (en) * | 2017-03-17 | 2018-03-27 | 포항공과대학교 산학협력단 | Stave |
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2012
- 2012-12-06 AU AU2012347750A patent/AU2012347750A1/en not_active Abandoned
- 2012-12-06 IN IN4504CHN2014 patent/IN2014CN04504A/en unknown
- 2012-12-06 CA CA2858567A patent/CA2858567A1/en not_active Abandoned
- 2012-12-06 EP EP12810461.9A patent/EP2788649A1/en not_active Withdrawn
- 2012-12-06 MX MX2014006887A patent/MX2014006887A/en unknown
- 2012-12-06 WO PCT/US2012/068246 patent/WO2013086192A1/en active Application Filing
- 2012-12-06 KR KR1020147017324A patent/KR20140097448A/en not_active Application Discontinuation
- 2012-12-06 US US13/707,213 patent/US20130340874A1/en not_active Abandoned
- 2012-12-06 BR BR112014033170A patent/BR112014033170A2/en not_active IP Right Cessation
- 2012-12-06 RU RU2014127181A patent/RU2014127181A/en not_active Application Discontinuation
- 2012-12-06 CN CN201280062376.4A patent/CN103998847A/en active Pending
- 2012-12-07 AR ARP120104592A patent/AR089188A1/en unknown
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Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2015187288A (en) * | 2014-03-26 | 2015-10-29 | 新日鐵住金株式会社 | Device and method for repairing stave cooler pipe conduit |
KR101569612B1 (en) | 2014-04-14 | 2015-11-17 | 주식회사 포스코 | Apparatus and method for repairing stave cooling system for furnace |
KR101569616B1 (en) | 2014-04-15 | 2015-11-17 | 주식회사 포스코 | Apparatus and method for repairing stave cooling system for furnace |
CN114891940A (en) * | 2022-04-18 | 2022-08-12 | 大连科萌工程材料有限公司 | Method for hot-face grouting of blast furnace carbon brick |
CN114908205A (en) * | 2022-04-22 | 2022-08-16 | 北京科技大学 | Miniature cooler of blast furnace |
CN114854913A (en) * | 2022-05-19 | 2022-08-05 | 宝武集团鄂城钢铁有限公司 | Method for repairing cooling vertical pipe jump connection in blast furnace |
Also Published As
Publication number | Publication date |
---|---|
CA2858567A1 (en) | 2013-06-13 |
WO2013086192A1 (en) | 2013-06-13 |
MX2014006887A (en) | 2015-04-09 |
RU2014127181A (en) | 2016-02-10 |
IN2014CN04504A (en) | 2015-09-11 |
BR112014033170A2 (en) | 2017-06-27 |
KR20140097448A (en) | 2014-08-06 |
AU2012347750A1 (en) | 2014-07-03 |
CN103998847A (en) | 2014-08-20 |
EP2788649A1 (en) | 2014-10-15 |
AR089188A1 (en) | 2014-08-06 |
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