CN102443666A - Device for rapid replacement of blast furnace cooling wall through external jacking without lowering stockline and construction method thereof - Google Patents

Device for rapid replacement of blast furnace cooling wall through external jacking without lowering stockline and construction method thereof Download PDF

Info

Publication number
CN102443666A
CN102443666A CN2011104085062A CN201110408506A CN102443666A CN 102443666 A CN102443666 A CN 102443666A CN 2011104085062 A CN2011104085062 A CN 2011104085062A CN 201110408506 A CN201110408506 A CN 201110408506A CN 102443666 A CN102443666 A CN 102443666A
Authority
CN
China
Prior art keywords
cooling stave
jacking
replacing
furnace shell
replaced
Prior art date
Application number
CN2011104085062A
Other languages
Chinese (zh)
Other versions
CN102443666B (en
Inventor
罗浩楠
秦川
吴荣善
冯树雄
陈梦逢
王平
Original Assignee
攀钢集团工程技术有限公司
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 攀钢集团工程技术有限公司 filed Critical 攀钢集团工程技术有限公司
Priority to CN 201110408506 priority Critical patent/CN102443666B/en
Publication of CN102443666A publication Critical patent/CN102443666A/en
Application granted granted Critical
Publication of CN102443666B publication Critical patent/CN102443666B/en

Links

Abstract

The invention provides a device for rapid replacement of a blast furnace cooling wall through external jacking without lowering a stockline and a construction method thereof. The method comprises: dismounting a circulating water pipe line from a cooling wall area to be replaced; cutting the furnace shell of the cooling wall area to be replaced; arranging a jacking frame, which is provided with jacking instruments; jacking the furnace shell of the cooling wall area to be replaced and the cooling wall into the furnace with the jacking instruments, and forming an opening on the overall surface of the furnace shell of the blast furnace; and mounting a new cooling wall and a new furnace shell inside the opening. The device consists of: a jacking frame, on which jacking instrument seat boards are disposed; and jacking instruments that are installed on the jacking instrument seat boards and used for jacking the furnace shell of the cooling wall area to be replaced and the cooling wall into the furnace. The construction method in the embodiment of the invention has the advantages of reliably controlled construction process, low requirement for construction technical level and technical difficulty, less material waste, reusable construction facility, less operation, and no occupation of stockline clearing time and blowing-in charging time.

Description

Do not fall the outer top of stockline method and change the device and the constructional method of blast furnace cooling stave fast
Technical field
The present invention relates to a kind of device and constructional method of changing blast furnace cooling stave, more particularly, relate to a kind of device and constructional method that the outer top of stockline method is changed blast furnace cooling stave fast of not falling.
Background technology
Blast furnace cooling stave is bed rearrangement operation of blast furnace one of main cooling apparatus when producing, and places between furnace shell and the furnace lining, and main material is cast iron, cast steel or copper.Blast furnace cooling stave in process of production, owing to load-bearing stressed big, temperature is high and circulating inside water reason such as wash away continuously, cause cooling stave to damage easily, possibly connect last furnace shell when serious and burn out situation such as causing leakage together.Each reparation can't guarantee the needs that blast furnace is produced, therefore needs the periodic replacement cooling stave.
One of visual plant that blast furnace is produced as ironmaking; The length of its repair time will directly influence the ordinary production of manufacturer; And the constructional method of traditional replacing cooling stave generally is to construct according to the method for " damping down → fall stockline → first section cooling stave place goes out residue iron in residual iron → prepurging → be provided with hanging scaffold-dismounting cooling stave "; So-called stockline is exactly the curve of the interface of the material that arranges in the blast furnace.Recover according to the method for " cooling stave → dismounting hanging scaffold → material loading → first section cooling stave → air-supply of recovery again is installed ", the duration of this type of constructional method is generally about 30 days again.
So-called stockline is meant planar line on the various raw materials of being adorned in the State of Blast Furnace, and stockline is apart from about 2.5 meters of great bell end openings during ordinary production, and steel brick, cooling stave etc. are embedded in the raw material in the stove, directly do not contact with air-flow, and cooling stave is played the better protecting effect.For a long time, the method for falling stockline is adopted in the replacing of blast furnace cooling stave, and stockline is dropped to below the air port, fetches water in the stove, after the scarfing cinder, empties in the stove, and old cooling stave is removed and installed easily, but the construction period is longer, influences the blast furnace ordinary production.The replacing of blast furnace cooling stave is at present all adopted and is fallen the stockline construction technology.
Yet; Sometimes because the restriction of situation such as manufacturer's working condition, engineering time and safety in production; Require unit in charge of construction to change the polylith blast furnace cooling stave that finishes at short notice, have that site environment is complicated, the duration is nervous, construction area is narrow, the practical problems of lifting insufficient space.
Summary of the invention
Other positions can not keep problem motionless and that need fall stockline and reach the standard grade again when changing cooling stave in order to solve, and the object of the present invention is to provide a kind of constructional method of quick replacing blast furnace cooling stave.
To achieve these goals, according to embodiments of the invention a kind of method of changing cooling stave is provided, said method comprises: remove the circulating water pipework on the cooling stave to be replaced zone; Cut the furnace shell in cooling stave zone to be replaced; Upper frame is set, jacking mechanism is set on the upper frame; Use jacking mechanism that the furnace shell and the cooling stave in cooling stave zone to be replaced are headed in the stove, and form opening in appearance in the furnace shell integral body of blast furnace; New cooling stave and the furnace shell that is attached thereto are installed in the said opening.
Upper frame is welded by joist steel.
Upper frame is provided with the jacking mechanism seat board, and jacking mechanism is installed on the jacking mechanism seat board.
Upper frame has two-layer, every layer a jacking mechanism is installed.
Said jacking mechanism is the ram motion device.
Said ram motion device is an oil press.
The right ends arm of upper frame is fixed on the cooling stave zone of both sides, cooling stave zone to be replaced.
Consolidation process is carried out in cooling stave zone to both sides, cooling stave zone to be replaced.
The metal frame that use is connected to the peripheral grate of blast furnace carries out fixed support to the cooling stave zone of both sides, cooling stave zone to be replaced.
On the furnace shell in cooling stave zone to be replaced, blocking material plate is set.
On upper peripheral edge, left side periphery and the right side periphery of the regional furnace shell of cooling stave to be replaced, blocking material plate is set.
The thickness of blocking material plate is 16mm, and material is Q345B.
Relief hole is set on furnace shell, is used for when jacking cooling stave zone, discharging unnecessary material.
The diameter of relief hole is 80mm.
After old furnace shell and cooling stave top is put in place, blocking material plate and the furnace shell that is not headed into are all around burn-on, remove jacking mechanism then, new cooling stave and the furnace shell that is attached thereto then are installed.
The new cooling stave of changing does not have tuck.
The periphery of the new cooling stave of changing does not have tapering.
The size of undersized formed opening after backing down old furnace shell and cooling stave of new furnace shell of changing and cooling stave.
The area in the cooling stave zone of being cut is less than the area of an old cooling stave.
New furnace shell and the old furnace shell in both sides are played the groove welding to smooth.
Welding gantry card on new furnace shell and the furnace shell around it.
After the new furnace shell with cooling stave location to be replaced installs with new cooling stave, repeat the aforesaid operations step, continue the cooling stave of its peripheral region is changed.
In the assurance stove and cooling stave area relative position to be replaced is a coke.
Camera is set in blast furnace, confirms through observing the formed image of camera whether coke is in and corresponding position, cooling stave to be replaced zone.
The granularity of employed coke is greater than 60mm.
Loading sequence carries out according to ore and coke alternative in proper order.
The thickness of the coke layer of packing into surpasses the height of cooling stave self.
When the furnace shell in cutting cooling stave zone to be replaced, at first confirm the position of cooling stave to be replaced according to the position of circulating water pipework.
According to a further aspect in the invention, a kind of device that is used to change cooling stave is provided, said device comprises: upper frame, upper frame are provided with the jacking mechanism seat board; Jacking mechanism is installed on the jacking mechanism seat board, and said jacking mechanism is used for the furnace shell and the cooling stave in cooling stave zone to be replaced are headed in the stove, and forms opening in appearance in the furnace shell integral body of blast furnace.
Upper frame is welded by joist steel.
Upper frame has two-layer, every layer a jacking mechanism is installed.
Said jacking mechanism is the ram motion device.
Said ram motion device is an oil press.
The right ends arm of upper frame is fixed on the cooling stave zone of both sides, cooling stave zone to be replaced.
Said device also comprises: be connected to the metal frame of the peripheral grate of blast furnace, be used for consolidation process is carried out in the cooling stave zone of the regional both sides of cooling stave to be replaced.
Blast furnace cooling stave is changed to adopt and is not fallen stockline replacing cooling stave technology according to an embodiment of the invention.The stockline construction technology does not fall in employing, will not take to empty stockline time and blow in burden time; Reduce the blow-on rapidly of baker easy access completion back; Do not go out residual iron, open residual iron gate less, do not make residual metal trough, residue iron in the prepurging is not opened T-slot etc., will shorten the engineering time greatly; Reduce the cool stove of fetching water to cooling stave damage and the shock heating quenching influence of body of heater, prolong blast furnace work-ing life; Reduce advantages such as ambient noise.
Constructional method is simple according to an embodiment of the invention, and construction process control is reliable, and operating technique level, technical difficulty are less demanding, easy master.In implementation process, waste of material is little, and construction installation is reusable, and safety control is better, and operation is less, and the time takies less, and quality is controlled easily.
Constructional method has prolonged the work-ing life of blast furnace cooling stave according to an embodiment of the invention, has reduced the maintenance number of times, has practiced thrift material, has shortened the replacing construction period.
Description of drawings
Through below in conjunction with the description carried out of accompanying drawing that an example exemplarily is shown, of the present invention above-mentionedly will become apparent with other purposes and characteristics, wherein:
Fig. 1 is the blast furnace panorama sketch;
Fig. 2 is the front view that the upper frame structure that is provided with oil press is shown;
Fig. 3 schematically shows old furnace shell of oil press jacking that is provided with on the upper frame and the vertical view of withdrawing from old furnace shell;
Fig. 4 is the old furnace shell of oil press jacking that is provided with on the upper frame but the side-view of not shown blocking material plate;
Fig. 5 is the side-view that the oil press jacking that is provided with on the upper frame has the old furnace shell of blocking material plate;
Fig. 6 has schematically shown the furnace shell that is provided with three blocking material plates according to an embodiment of the invention.
Embodiment
Below, specify embodiments of the invention with reference to accompanying drawing.
Fig. 1 is the blast furnace panorama sketch, has been full of various iron-smelting raw materials (comprising coke, agglomerate, lump ore, lime stone, pelletizing etc.) in the blast furnace.Label 12,13 among Fig. 1 is represented is cooling stave, and it is arranged on furnace shell 14 inboards.
Fig. 2 is the front view that the upper frame structure that is provided with oil press is shown; Fig. 3 schematically shows old furnace shell of oil press jacking that is provided with on the upper frame and the vertical view of withdrawing from old furnace shell; The side-view that Fig. 4 schematically shows the old furnace shell of oil press jacking that is provided with on the upper frame (for clarity sake; Not shown blocking material plate), Fig. 5 is the side-view that the oil press jacking that is provided with on the upper frame has the old furnace shell of blocking material plate.
Cooling stave is between furnace shell 14 and furnace lining, and it is that block-by-block is installed.Three cooling stave zones 4,5,6 have been shown in Fig. 2; Each cooling stave zone includes a cooling stave and coupled furnace shell; Pass a plurality of water inlet arms and exit branch 3 on the furnace shell, there is the water bustle pipe in the furnace shell outside, and a plurality of water inlet arms of water bustle pipe on each cooling stave supply water; Be used for feeding recirculated water to cooling stave, water is discharged to the tank from exit branch then.The Inlet and outlet water arm in each cooling stave zone all is independently.Installing because cooling stave is a block-by-block, also is that block-by-block is changed when therefore changing cooling stave.At first to cut off the water when changing cooling stave, remove water bustle pipe, tank and the Inlet and outlet water arm in cooling stave to be replaced zone, for construction is created conveniently.When removing water pipe, need block the interface that links to each other with the water bustle pipe of peripheral region.Therefore because cooling stave during fabrication, the distance of its edge and Inlet and outlet water arm is a fixed, can confirm dismounting cooling stave position according to the Inlet and outlet water arm, with flame cutter the periphery of the furnace shell of cooling stave to be replaced regional 5 is cut out the slit again.
Then as shown in Figures 2 and 3, begin to be provided with upper frame.Upper frame can use weldering system such as joist steel (material for example can be I40a) to form, to guarantee certain intensity.Certain upper frame of the present invention is not to use joist steel to be welded, so long as make upper frame can guarantee that the skeleton construction of sufficient intensity all can.Upper frame divides two-layer up and down, and it is two-layer up and down to use joist steel to connect.Be welded with jacking mechanism seat board 2 on the joist steel, ram motion device 1 (for example, 300t oil press) is installed on jacking mechanism seat board 2.Right ends arm A, the B of upper frame are fixed on the cooling stave zone 4,6 of 5 both sides, cooling stave zone to be replaced.Simultaneously; Consolidation process is carried out in cooling stave zone 4,6 to temporarily not changing; For example; Use the objects such as metal frame of the peripheral grate that is connected to blast furnace to carry out fixed support above that, metal frame one end is connected on the grate, and the other end is supported on the cooling stave zone of temporarily not changing 4,6; Avoid the ram motion device 1 cooling stave zone 4,6 that damage is not temporarily changed in jacking cooling stave zone 5 to be replaced, the problem of having avoided the temporary transient cooling stave zone of not changing 4,6 to deform even cause interior high temperature raw material of blast furnace and/or coke to expose.
Drive two ram motion devices 1 respectively with two cover Hydraulic Stations, old furnace shell and cooling stave are headed in the stove.The invention is not restricted to use the ram motion device, also can use other suitable jacking mechanisms.Need old furnace shell be headed into certain distance, that is to say and in stove, to squeeze high temperature raw material and/or the coke of opening certain volume, to guarantee to have the space that new furnace shell and cooling stave are in place.
In the present embodiment, upper frame have two-layer up and down, every layer a ram motion device 1 is set.But the invention is not restricted to this, upper frame can be provided with multilayer, and every layer can be provided with a plurality of ram motion devices 1.
On furnace shell, blocking material plate need be set; This is because after heading into old furnace shell and cooling stave in the stove; Will by the periphery in the cooling stave of jacking zone 5 with not by the cooling stave of jacking zone 4, the bigger gap of generation between 6; If high temperature raw material about 800 ℃ and/or coke are gushed out from the gap position of changing cooling stave, can cause accidents such as platform burns out, tank stops up, cable burns out, need clear up great amount of high-temperature raw material and/or coke simultaneously; To cause very large influence to construction and production, thereby cause the accident.Therefore need block this gap.
For this reason, like Fig. 5 and shown in Figure 6, according to embodiments of the invention; On upper peripheral edge, left side periphery and the right side periphery of the old furnace shell of removing with cooling stave, be welded with blocking material plate 9,8,10 respectively; The thickness of blocking material plate 9,8,10 can be δ=16mm, and can adopt material is the blocking material plate of Q345B, and the size of blocking material plate is decided according to practical situation; For example can be long 1600mm, wide 945mm.For illustrated clear for the purpose of, only show two baffle plates 8 and 9 among Fig. 5.The lower periphery setting of old furnace shell perhaps is not provided with blocking material plate and all can.
If it is bigger to push up old cooling stave resistance, can on furnace shell, bore or cut a plurality of relief holes 7 (as shown in Figure 2), the redundance in the stove is extruded through relief hole 7; Remove this a part of redundance then; The limit top margin is expected clearly, can this be called " method of squeezing toothpaste out of a tube ", the stifled relief hole 7 of going up after the top puts in place.The diameter of relief hole 7 can be for example 80mm, and relief hole 7 also can be shapes such as ellipse.If jack-in process is very easy to, then relief hole 7 can be set.
After pushing up old furnace shell and cooling stave and putting in place; Before being installed, new furnace shell and cooling stave must dismantle ram motion device 1; After preventing that oil press from having dismantled; Resilience outward under the effect of old furnace shell and cooling stave high temperature raw material and/or the coke in blast furnace causes influencing the installation of new furnace shell and cooling stave.According to embodiments of the invention, can also be before removing ram motion device 1, blocking material plate and furnace shell are all around burn-on, thereby solved this problem dexterously.
Behind old furnace shell of jacking and the cooling stave, begin to install new cooling stave.The structure of new cooling stave can be different with old cooling stave, and is as shown in Figure 5, and old cooling stave has tuck 11, is used to accept top cooling stave.As shown in Figure 1, when beginning to build blast furnace by laying bricks or stones most, the cooling stave 12 of below is provided with tuck 11, with the weight of the cooling stave 13 above bearing.In case yet after the body of heater formation, cooling stave can be sintered on the furnace shell with its inboard refractory lining tightly, the cooling stave of top again need not the support of the cooling stave of below.Therefore change after the old cooling stave, new cooling stave need not to have tuck 11 again, thereby can save material.Thereby the top thickness of cooling stave can be thinned to 345mm by for example 580mm.
In addition, during the old cooling stave of former installation owing to be from inside to outside to install, old cooling stave all have outer little in big tapering (being the perimeter dimensions of the perimeter dimensions of cooling stave outside surface) less than internal surface.But when changing; New cooling stave is to install from outside to inside, need be with whole straight flanges (that is, periphery does not have tapering) that change into of new cooling stave; All sizes all manufacture and are slightly less than the size of backing down formed opening behind the old cooling stave, are beneficial to new cooling stave is installed in the opening.
In addition, for highly bigger cooling stave (for example, highly being the 6th band cooling stave of 1625mm); If monoblock is installed, then jacking difficulty is big (resistance is bigger), and safety and quality can not effectively be guaranteed; Can this cooling stave be manufactured two sections, be divided into two and remove and install that (that is the area in the cooling stave zone of, being cut can be area half the of an old cooling stave; Jacking be the cooling stave that is equivalent to old half area of cooling stave), thereby reduced the resistance of jacking, guaranteed quality.Also can divide two dismountings, it is regional with the new cooling stave that the area that cooling stave is regional equates basically that an area then is installed.The invention is not restricted to be divided into two dismountings, can be divided into polylith and remove.
When new cooling stave is installed, need strictly furnace shell and cooling stave to be installed by standard, guarantee that the new cooling stave and the clearance gap of old cooling stave all around meet design requirement; New furnace shell and the old furnace shell in both sides be to smooth, after beating groove and welding, stamps clamp; For example; Stamp gantry card, this gantry card strides across the slit between furnace shell, and two ends are welded on respectively on the furnace shell and the furnace shell around it that just has been replaced.
To in blast furnace, be smelted to old furnace shell, old cooling stave and blocking material plate in the blast furnace by jacking, need not artificially be removed.
After the new furnace shell with 5 places, cooling stave zone installs with new cooling stave, can continue the cooling stave of its peripheral region is changed, the step in its operation steps and the top description is similar, thereby finally accomplishes the installation of all cooling staves.
In order to guarantee that old furnace shell and cooling stave are headed in the stove smoothly, according to embodiments of the invention, the design of an optimization can be arranged, promptly create necessary condition by the production technique of blast furnace.In order to make cooling stave easily by jacking, the more loose material on the jacking direction, faced of cooling stave then.For example, can require can not be had in the correspondence position stove of jacking raw materials such as ore, and more loose material, for example, coke is to help the jacking of old stove skin.Because the process that old furnace shell and cooling stave are headed in the stove is a compression space process; Need back side furnace charge that a reasonable compression performance is arranged, and the void content of coke is 45%~53%, much larger than the ore void content; And volume-diminished 75% behind the char combustion, the volumetric shrinkage of ore about 30%.
Because intensity was maximum when coke size was 25~40mm, stable performance is difficult for compression, so the present invention adopts the coke of granularity greater than 60mm, granularity is big more, and the porosity between coke is just big more, adds that coke volume-diminished rate is big, for the top cooling stave creates conditions.
For what guarantee that cooling stave to be replaced faces is relatively more loose coke, and shaft furnace charging is met some requirements.Following mask body is listed an instance, but the invention is not restricted to the concrete parameter in the listed instance.Suppose as shown in Figure 1; Needs replacing end opening absolute altitude is 16.5 meters the 6th a section cooling stave (oneself height of this section cooling stave is 1.625 meters); Then make the air-supply feed supplement according to following account form: the furnace shell back sampling factor 10% that is heated; Crude fuel deadweight compression factor 12%, so the crude fuel volume calculated need add 22%, calculates work loading height with this.
First: dress ore (raw material agglomerate, lump ore, lime stone, pelletizing) is to about 14 meters absolute altitudes.
Second batch: dress coke 180t, volume 347m 3, the body of heater inside radius is average 4.48 meters here, work loading height 347/ (3.14 * 4.48 * 4.48)=5.51 meter, plane absolute altitude=14+5.51=19.51 rice on the coke.The 6th section cooling stave absolute altitude 16.5+1.625=18.125 suitable for reading rice, both differ 19.51-18.125=1.385 rice, thereby guarantee that fully the cooling stave back side is coke entirely, create conditions for tearing old furnace shell cooling stave open.
The 3rd batch to the 5th batch: add 541 tons of raw materials, add 30 tons of cokes, binder.
The invention is not restricted to top this loading sequence; And raw material that can be in stove and coke when being higher than 14 meters by new proportioning (even by other proportionings) charging; Get final product as long as the thickness of the coke layer of packing into surpasses the height (height of cooling stave self is not meant the residing absolute altitude in cooling stave bottom or center, and is meant the length that cooling stave self is vertically covered) of cooling stave self, the absolute altitude of this coke layer possibly begin in higher position; But along with bottom raw material and the burning of coke in blast furnace; The absolute altitude of initiate coke layer also reduces gradually, can observe the position of new coke layer through being contained in camera in the blast furnace, when this coke layer just in time can cover cooling stave to be replaced; Begin to utilize this cooling stave zone of ram motion device 1 jacking, can easily head into this moment.
The invention is not restricted to the foregoing description, without departing from the present invention, can carry out various distortion and modification.

Claims (35)

1. method of changing cooling stave, said method comprises:
Remove the circulating water pipework on the cooling stave to be replaced zone;
Cut the furnace shell in cooling stave zone to be replaced;
Upper frame is set, jacking mechanism is set on the upper frame;
Use jacking mechanism that the furnace shell and the cooling stave in cooling stave zone to be replaced are headed in the stove, and form opening in appearance in the furnace shell integral body of blast furnace;
New cooling stave and the furnace shell that is attached thereto are installed in the said opening.
2. the method for replacing cooling stave according to claim 1, wherein,
Upper frame is welded by joist steel.
3. the method for replacing cooling stave according to claim 1 and 2, wherein,
Upper frame is provided with the jacking mechanism seat board, and jacking mechanism is installed on the jacking mechanism seat board.
4. the method for replacing cooling stave according to claim 1 and 2, wherein,
Upper frame has two-layer, every layer a jacking mechanism is installed.
5. the method for replacing cooling stave according to claim 3, wherein,
Said jacking mechanism is the ram motion device.
6. the method for replacing cooling stave according to claim 5, wherein,
Said ram motion device is an oil press.
7. the method for replacing cooling stave according to claim 1 and 2, wherein,
The right ends arm of upper frame is fixed on the cooling stave zone of both sides, cooling stave zone to be replaced.
8. the method for replacing cooling stave according to claim 1 and 2, wherein,
Consolidation process is carried out in cooling stave zone to both sides, cooling stave zone to be replaced.
9. the method for replacing cooling stave according to claim 8, wherein,
The metal frame that use is connected to the peripheral grate of blast furnace carries out fixed support to the cooling stave zone of both sides, cooling stave zone to be replaced.
10. the method for replacing cooling stave according to claim 1, wherein,
On the furnace shell in cooling stave zone to be replaced, blocking material plate is set.
11. the method for replacing cooling stave according to claim 10, wherein,
On upper peripheral edge, left side periphery and the right side periphery of the regional furnace shell of cooling stave to be replaced, blocking material plate is set.
12. the method for replacing cooling stave according to claim 10, wherein,
The thickness of blocking material plate is 16mm, and material is Q345B.
13. according to the method for each described replacing cooling stave in the claim 1,2,10, wherein,
Relief hole is set on furnace shell, is used for when jacking cooling stave zone, discharging unnecessary material.
14. the method for replacing cooling stave according to claim 13, wherein,
The diameter of relief hole is 80mm.
15. according to the method for each described replacing cooling stave in the claim 1,2,10, wherein,
After old furnace shell and cooling stave top is put in place, blocking material plate and the furnace shell that is not headed into are all around burn-on, remove jacking mechanism then, new cooling stave and the furnace shell that is attached thereto then are installed.
16. according to the method for each described replacing cooling stave in the claim 1,2,10, wherein,
The new cooling stave of changing does not have tuck.
17. according to the method for each described replacing cooling stave in the claim 1,2,10, wherein,
The periphery of the new cooling stave of changing does not have tapering.
18. according to the method for each described replacing cooling stave in the claim 1,2,10, wherein,
The size of undersized formed opening after backing down old furnace shell and cooling stave of new furnace shell of changing and cooling stave.
19. according to the method for each described replacing cooling stave in the claim 1,2,10, wherein,
The area in the cooling stave zone of being cut is less than the area of an old cooling stave.
20. according to the method for each described replacing cooling stave in the claim 1,2,10, wherein,
New furnace shell and the old furnace shell in both sides are played the groove welding to smooth.
21. the method for replacing cooling stave according to claim 20, wherein,
Welding gantry card on new furnace shell and the furnace shell around it.
22. according to the method for each described replacing cooling stave in the claim 1,2,10, wherein,
After the new furnace shell with cooling stave location to be replaced installs with new cooling stave, repeat the aforesaid operations step, continue the cooling stave of its peripheral region is changed.
23. according to the method for each described replacing cooling stave in the claim 1,2,10, wherein,
In the assurance stove and cooling stave area relative position to be replaced is a coke.
24. the method for replacing cooling stave according to claim 23, wherein,
Camera is set in blast furnace, confirms through observing the formed image of camera whether coke is in and corresponding position, cooling stave to be replaced zone.
25. the method for replacing cooling stave according to claim 23, wherein,
The granularity of employed coke is greater than 60mm.
26. the method for replacing cooling stave according to claim 23, wherein,
Loading sequence carries out according to ore and coke alternative in proper order.
27. the method for replacing cooling stave according to claim 23, wherein,
The thickness of the coke layer of packing into surpasses the height of cooling stave self.
28. according to the method for each described replacing cooling stave in the claim 1,2,10, wherein,
When the furnace shell in cutting cooling stave zone to be replaced, at first confirm the position of cooling stave to be replaced according to the position of circulating water pipework.
29. a device that is used to change cooling stave, said device comprises:
Upper frame, upper frame are provided with the jacking mechanism seat board;
Jacking mechanism is installed on the jacking mechanism seat board, and said jacking mechanism is used for the furnace shell and the cooling stave in cooling stave zone to be replaced are headed in the stove, and forms opening in appearance in the furnace shell integral body of blast furnace.
30. the device of replacing cooling stave according to claim 29, wherein,
Upper frame is welded by joist steel.
31. the device of replacing cooling stave according to claim 29, wherein,
Upper frame has two-layer, every layer a jacking mechanism is installed.
32. the device of replacing cooling stave according to claim 29, wherein,
Said jacking mechanism is the ram motion device.
33. the device of replacing cooling stave according to claim 32, wherein,
Said ram motion device is an oil press.
34. the device of replacing cooling stave according to claim 29, wherein,
The right ends arm of upper frame is fixed on the cooling stave zone of both sides, cooling stave zone to be replaced.
35. the device of replacing cooling stave according to claim 29, said device also comprises:
Be connected to the metal frame of the peripheral grate of blast furnace, be used for consolidation process is carried out in the cooling stave zone of the regional both sides of cooling stave to be replaced.
CN 201110408506 2011-12-09 2011-12-09 Device for rapid replacement of blast furnace cooling wall through external jacking without lowering stockline and construction method thereof CN102443666B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201110408506 CN102443666B (en) 2011-12-09 2011-12-09 Device for rapid replacement of blast furnace cooling wall through external jacking without lowering stockline and construction method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201110408506 CN102443666B (en) 2011-12-09 2011-12-09 Device for rapid replacement of blast furnace cooling wall through external jacking without lowering stockline and construction method thereof

Publications (2)

Publication Number Publication Date
CN102443666A true CN102443666A (en) 2012-05-09
CN102443666B CN102443666B (en) 2013-07-17

Family

ID=46006606

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201110408506 CN102443666B (en) 2011-12-09 2011-12-09 Device for rapid replacement of blast furnace cooling wall through external jacking without lowering stockline and construction method thereof

Country Status (1)

Country Link
CN (1) CN102443666B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102912051A (en) * 2012-10-26 2013-02-06 莱芜钢铁集团有限公司 Method for exchanging cooling wall of blast furnace taphole online
CN103484587A (en) * 2013-09-30 2014-01-01 天津二十冶建设有限公司 Method for replacing cooling wall of blast furnace with material
CN110172535A (en) * 2019-05-29 2019-08-27 武汉钢铁有限公司 A kind of blast furnace drop stockline to bosh replacement cooling wall binder and answer wind distribution

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01191718A (en) * 1988-01-27 1989-08-01 Sumitomo Metal Ind Ltd Stave in blast furnace and setting method thereof
CN2113981U (en) * 1992-02-02 1992-08-26 冶金工业部攀枝花钢铁公司 Disassembling device for changing blast furnace cooling plate
JP2000063917A (en) * 1998-08-24 2000-02-29 Kawasaki Steel Corp Device for exchanging stave in blast furnace and method for exchanging stave in blast furnace using the device
JP2000309813A (en) * 1999-04-22 2000-11-07 Nkk Corp Working method for fitting cooling stave on furnace body of blast furnace
RU2232820C1 (en) * 2002-12-26 2004-07-20 Открытое акционерное общество "Северсталь" Method of replacement of charge vertical plate coolers of a blast furnace
CN101570802A (en) * 2009-04-30 2009-11-04 中冶实久建设有限公司 Replacing method of blast furnace shell and water wall
CN101812558A (en) * 2010-04-02 2010-08-25 攀钢集团冶金工程技术有限公司 Construction method for replacing intermediate furnace body of blast furnace
JP2011074462A (en) * 2009-09-30 2011-04-14 Nippon Steel Engineering Co Ltd Method for removing stave-cooler
CN102212630A (en) * 2011-05-23 2011-10-12 北京首钢建设集团有限公司 Construction method for replacing cooling wall of blast furnace by utilizing movable hanging scaffold

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01191718A (en) * 1988-01-27 1989-08-01 Sumitomo Metal Ind Ltd Stave in blast furnace and setting method thereof
CN2113981U (en) * 1992-02-02 1992-08-26 冶金工业部攀枝花钢铁公司 Disassembling device for changing blast furnace cooling plate
JP2000063917A (en) * 1998-08-24 2000-02-29 Kawasaki Steel Corp Device for exchanging stave in blast furnace and method for exchanging stave in blast furnace using the device
JP2000309813A (en) * 1999-04-22 2000-11-07 Nkk Corp Working method for fitting cooling stave on furnace body of blast furnace
RU2232820C1 (en) * 2002-12-26 2004-07-20 Открытое акционерное общество "Северсталь" Method of replacement of charge vertical plate coolers of a blast furnace
CN101570802A (en) * 2009-04-30 2009-11-04 中冶实久建设有限公司 Replacing method of blast furnace shell and water wall
JP2011074462A (en) * 2009-09-30 2011-04-14 Nippon Steel Engineering Co Ltd Method for removing stave-cooler
CN101812558A (en) * 2010-04-02 2010-08-25 攀钢集团冶金工程技术有限公司 Construction method for replacing intermediate furnace body of blast furnace
CN102212630A (en) * 2011-05-23 2011-10-12 北京首钢建设集团有限公司 Construction method for replacing cooling wall of blast furnace by utilizing movable hanging scaffold

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
李汉祥: "高炉冷却壁更换新技术应用", 《武钢技术》 *
王付华: "莱钢3#1080m3高炉炉缸更换冷却壁实践", 《山东冶金》 *
陈俊: "冷却壁更换技术在宝钢3号高炉的应用", 《炼铁》 *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102912051A (en) * 2012-10-26 2013-02-06 莱芜钢铁集团有限公司 Method for exchanging cooling wall of blast furnace taphole online
CN102912051B (en) * 2012-10-26 2015-05-06 莱芜钢铁集团有限公司 Method for exchanging cooling wall of blast furnace taphole online
CN103484587A (en) * 2013-09-30 2014-01-01 天津二十冶建设有限公司 Method for replacing cooling wall of blast furnace with material
CN110172535A (en) * 2019-05-29 2019-08-27 武汉钢铁有限公司 A kind of blast furnace drop stockline to bosh replacement cooling wall binder and answer wind distribution
CN110172535B (en) * 2019-05-29 2020-11-24 武汉钢铁有限公司 Material pressing and air returning proportioning method for replacing cooling wall of blast furnace from material lowering line to furnace belly

Also Published As

Publication number Publication date
CN102443666B (en) 2013-07-17

Similar Documents

Publication Publication Date Title
EP1785684B1 (en) Lifter for rotary heat exchanger, rotary heat exchanger with the lifter, and heat treatment method for nickel oxide ore
CN100346124C (en) Method and apparatus for coal coking
RU2431681C2 (en) Installation for direct melting
US20010000913A1 (en) Method and apparatus for short-term relining or construction of blast furnace
JP4904297B2 (en) Foundry sand recycling equipment
CN101570802B (en) Replacing method of blast furnace shell and water wall
CN101412109B (en) Building and laying method capable of extending service lifetime of RH ladle working lining
CN104759611B (en) What a kind of ladle was combined working lining and slag lining thereof builds by laying method
KR20070039159A (en) Smelting apparatus
CA2755845C (en) Steel production facility, method of steelmaking and method using electric energy therein
CN201621949U (en) Externally-heated coal reducing rotary kiln
CN102395688A (en) Cooling plate for a metallurgical furnace
CN106435087B (en) A kind of converter vaporization flue piecewise combination installation method
CN101293273A (en) Process for manufacturing low-aliquation large-scale hollow steel ingot
CN102806313B (en) Method for preventing casting boss from shrinkage porosity
CN103344112B (en) Banish method corundum smelting stove
CN201223932Y (en) Apparatus for inhibiting aliquation of large-sized steel ingot
CN102564135A (en) Construction method for patching of refractory materials of furnace top of heating furnace
CN102554201A (en) Large steel ladle and manufacturing method for same
CN101786619A (en) Vertical high temperature continuous graphitizing furnace
CN207108907U (en) Dry quenched coke pot
CN109593970B (en) Bottom blowing smelting, closed blowing and anode refining triple blowing device
CN105177202B (en) A kind of blast furnace overhaul method
JP5443383B2 (en) Metal anode casting equipment in anode casting plant
CN102912078B (en) The Multifunctional arc furnace system of minimumization power consumption and the processing procedure of manufacture product made from steel

Legal Events

Date Code Title Description
PB01 Publication
C06 Publication
SE01 Entry into force of request for substantive examination
C10 Entry into substantive examination
GR01 Patent grant
C14 Grant of patent or utility model