CN108085440A - Stove method is taken off in a kind of blast furnace overhaul - Google Patents
Stove method is taken off in a kind of blast furnace overhaul Download PDFInfo
- Publication number
- CN108085440A CN108085440A CN201711337222.2A CN201711337222A CN108085440A CN 108085440 A CN108085440 A CN 108085440A CN 201711337222 A CN201711337222 A CN 201711337222A CN 108085440 A CN108085440 A CN 108085440A
- Authority
- CN
- China
- Prior art keywords
- residual iron
- stove
- furnace
- blast furnace
- residual
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 37
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 158
- 229910052742 iron Inorganic materials 0.000 claims abstract description 79
- 238000001816 cooling Methods 0.000 claims abstract description 30
- 238000005553 drilling Methods 0.000 claims abstract description 12
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000011449 brick Substances 0.000 claims abstract description 9
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 9
- 239000004567 concrete Substances 0.000 claims abstract description 9
- 238000004880 explosion Methods 0.000 claims abstract description 7
- 230000032258 transport Effects 0.000 claims description 7
- 238000010276 construction Methods 0.000 abstract description 6
- 230000008901 benefit Effects 0.000 abstract description 5
- 238000005516 engineering process Methods 0.000 description 3
- 230000003628 erosive effect Effects 0.000 description 2
- 239000000470 constituent Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B5/00—Making pig-iron in the blast furnace
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B7/00—Blast furnaces
- C21B7/04—Blast furnaces with special refractories
- C21B7/06—Linings for furnaces
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
- Blast Furnaces (AREA)
Abstract
Stove method is taken off the invention discloses a kind of blast furnace overhaul, furnace bottom carbon brick upper surface elevation line and beams of concrete lower surface elevation line are identified on furnace shell during including 1) building blast furnace；2) bore position when taking some positions as residual iron placing on the blast furnace between two elevation lines in 1), removes this cooling wall and furnace shell, then radial bore, if occurs the situation that residual iron can not be put Chu Lai after the completion of drilling, boring point, redrilling are moved up immediately, until residual iron can release；3) residual iron placing removes bulk cargo in stove to when going out without residual flowing molten iron by the method for explosion；4) the residual iron position being not bled off in blast furnace cooling stave and furnace shell to stove is removed, is cleared up the upper surface of residual iron once again with Drilling machine；5) after removing whole furnace shells and cooling wall, sawed using rope and carry out sawing, then transport the residual iron of piecemeal.The advantages of comprehensive residual iron placing of the present invention and rope saw sawing process take off stove takes off stove with the method for online sawing after residual iron placing, simple for process, the safety and construction time is controllable.
Description
Technical field
The invention belongs to field of metallurgy, stove method is taken off in more particularly to a kind of blast furnace overhaul.
Background technology
Blast furnace overhaul need to remove furnace shell and the equipment to connect together with furnace shell such as cooling wall etc., remove bulk cargo in stove, resistance to
Residual iron below fiery material and Tie Kou positions, there are two types of method that residual iron is removed is general, one kind is opened in the suitable position of cupola well
Hole releases most of molten iron, when remaining residual trivet stove crushed by the method for explosion after remove；One kind is residual iron placing or does not put
Residual iron is directly and furnace shell drags furnace foundation away from together, is removed after sawing sawing using rope.
It is common when first method is current blast furnace overhaul to take off stove method, due to every blast-melted erosion furnace bottom carbon brick
Degree it is different, position of opening during residual iron placing in cupola well position determines relatively difficult, and height, remaining molten iron mistake are opened in position
More, position is opened low, it is possible to put not molten iron discharging, so taking off the time of stove can all greatly prolong.
The technics comparing that second method is related to is complicated, and the special equipment of input is more, and furnace shell is required to remove circuit
On structure or equipment all remove, so domestic only have a small number of qualified blast furnaces that can implement, also only only a few is looked forward to
Industry possesses construction ability.
Usually without considering using, major defect is not the method for residual iron placing direct-on-line sawing：
1st, remaining molten iron capacity is excessive, it is not easy to cure, and containing rubber constituent, it is necessary to which molten iron is cooled to one in saw of restricting
Rear can be used below constant temperature degree, and the main line duration occupied when so constructing is longer.
2：In the Tie Kou positions of blast furnace, beams of concrete is enclosed along furnace shell one, its upper surface is high after remaining molten iron cures
It cannot directly be removed behind the lower surface of beams of concrete, residual iron sawing piecemeal.
3：During residual iron sawing piecemeal, if piecemeal is very few, every piece of preponderance is not easy to transport, if piecemeal is excessive, by
It is limited in by saw cutting speed, can equally increase the time of main line construction.
The content of the invention
For the deficiency in background technology, stove method, comprehensive residual iron placing are taken off in a kind of blast furnace overhaul of present invention offer
And rope saws the advantages of sawing process takes off stove, and stove, simple for process, safety and construction time are taken off with the method for online sawing after residual iron placing
Controllably.
The technical solution that the present invention solves technical problem is as follows：
Stove method is taken off in a kind of blast furnace overhaul of the present invention, is included the following steps：
1) beams of concrete that the upper surface elevation line of furnace bottom carbon brick and Tie Kou positions are enclosed along furnace shell one when blast furnace is built
Lower surface elevation line be identified on furnace shell；
2) drilling when taking a line parallel with two elevation lines as residual iron placing between two elevation lines in step 1)
The position line chooses one piece of cooling wall on bore position line, removes the furnace shell of this cooling wall and the cooling wall position, and selection is wanted
The cooling wall position of dismounting will be convenient for setting up the groove that flows out residual iron, then in this position radial bore, if going out after the completion of drilling
The situation that existing residual iron can not be put Chu Lai moves up boring point, redrilling immediately, until residual iron can release；
3) residual iron placing removes the bulk cargo in stove by the method for explosion to when going out without residual flowing molten iron；
4) blast furnace cooling stave and furnace shell are removed, when tearing open to the residual iron position being not bled off in stove, with Drilling machine by residual iron
Upper surface is cleared up once again；
5) remaining whole furnace shells and cooling wall are removed, after the completion of dismounting, is sawed using rope and carries out sawing, then by the residual of piecemeal
Iron transports.
Further, during furnace shell and cooling wall at bore position when residual iron placing is removed in the step 2), if the position
It puts at upper and lower two layers of cooling wall joint, then removes lower floor's cooling wall.
Further, during the bore position line in the step 2) during residual iron placing is between two elevation lines in step 1)
Line.
Further, in the step 2) during radial bore, drilling rod holding is horizontal or slightly upwardly tilts.
Further, elevator machine travel is crossed by the residual Tie Tong of piecemeal in the step 5), will by setting sliding slot outside blast furnace
Residual iron slides to ground, then entrucking transports.
Compared with current existing technology, present invention process is simple, and safe operation, the construction time is controllable, and integrated use is put
Residual iron and rope saw sawing process the advantages of taking off stove, bore position accurate and effective ensures the timely releasing of residual iron, residual iron placing during residual iron placing
Transporting for the residual iron of piecemeal has been effectively ensured in the efficient combination of online sawing afterwards, has significantly saved the time of blast furnace overhaul so that high
Stove can put into production as early as possible, cost-effective, have good economic benefit；In addition, the present invention can be in any blast furnace overhaul
Using, have many advantages, such as to have a wide range of application, application value it is high.
Description of the drawings
The invention will be further described with reference to the accompanying drawings and detailed description：
Fig. 1 is the structure diagram of blast furnace of the present invention；
In figure：The upper surface elevation line of furnace bottom carbon brick, the lower surface elevation line of 2. beams of concretes, 3. are bored when 1. blast furnace is built
Hole site, 4. cooling walls, 5. sliding slots, 6. furnace shells, 7. iron mouths, 8. residual iron, 9, furnace bottom carbon brick, 10. furnace foundations, 11. bore position lines,
12. beams of concrete, 13. cupola wells.
Specific embodiment
Embodiment 1：
Stove method is taken off in a kind of blast furnace overhaul of the present invention, and the furnace structure is as shown in Figure 1, blast furnace includes furnace foundation
10,10 top of furnace foundation is furnace body, and furnace body includes cupola well 13, and the bottom of cupola well 13 is furnace bottom carbon brick 9, and the outside of cupola well 13 is followed successively by
Cooling wall 4 and furnace shell 6 are additionally provided with iron mouth 7 on furnace body, and 7 position of iron mouth is provided with beams of concrete 12 in 6 one weeks along furnace shell；It is described
Stove method is taken off to include the following steps：
1) concrete that the upper surface elevation line 1 of furnace bottom carbon brick and 7 position of iron mouth are enclosed along furnace shell 6 one when blast furnace is built
The lower surface elevation line 2 of beam is identified on furnace shell 6；
2) drilling when taking a line parallel with two elevation lines as residual iron placing between two elevation lines in step 1)
The position line 11, which is bore position 3, removes a cooling wall 4 at this position
And the furnace shell 6 of corresponding size, then in this position to 13 radial bore of cupola well, do not put not come out if occurring residual iron 8 after the completion of drilling
Situation, move up boring point immediately, redrilling, until residual iron 8 can release；
3) residual iron placing 8 removes the bulk cargo in stove by the method for explosion to when being flowed out without residual iron 8；
4) when removing the residual iron position being not bled off in blast furnace cooling stave 4 and furnace shell 6 to stove, with Drilling machine by the upper of residual iron 8
Surface is cleared up once again；
5) after removing whole furnace shells 6 and cooling wall 4, sawed using rope and carry out sawing, then transport the residual iron 8 of piecemeal.
When the furnace shell 6 and cooling wall 4 of the bore position 3 in step 2) described in the present embodiment during dismounting residual iron placing, if should
Lower floor's cooling wall 4 is then removed in upper and lower two layers of cooling wall, 4 seam crossing in position.
Bore position line 11 described in the present embodiment in step 2) during residual iron placing may be configured as two absolute altitudes in step 1)
Center line between line by bore position line 11 in this way, residual iron can be released effectively after piercing, ensures the need of blast furnace overhaul
It will.
Described in the present embodiment in step 2) during radial bore, furnace bottom carbon brick 9 suffers erosion during due to blast fumance feelings
Condition is different, can be horizontal by drilling rod holding or slightly upwardly tilt, and can so ensure to be not in feelings that residual iron can not be put Chu Lai substantially
Condition.
The residual iron 8 of piecemeal can be by elevator machine travel, by setting cunning outside blast furnace in step 5) described in the present embodiment
Residual iron 8 after piecemeal is slided to ground by slot 5, then entrucking transports.
The method of stove and the direct-on-line sawing of non-residual iron placing are taken off by explosion after the method for the invention and residual iron placing
Method is compared, and is taken off 21 days method used times of stove after residual iron placing by explosion on the large blast furnace of same volume, is taken off stove and account for
With about 9 days main line durations；Not residual iron placing direct-on-line sawing used time 14 days all occupy the main line duration in this 14 days；Use this hair
It is 8 days method used times of direct-on-line sawing after bright residual iron placing, simple for process although this occupies the main line duration for 8 days, safety and
Construction time is controllable.
The foregoing is merely a prefered embodiment of the invention, but protection scope of the present invention is not limited thereto, any to be familiar with sheet
In the technical scope disclosed by the present invention, the change or replacement that can be readily occurred in should all be covered those skilled in the art
Within protection scope of the present invention.Therefore, protection scope of the present invention should be subject to the protection domain that claim is defined.
Claims (5)
1. stove method is taken off in a kind of blast furnace overhaul, include the following steps：
1) under the beams of concrete that the upper surface elevation line of furnace bottom carbon brick and Tie Kou positions are enclosed along furnace shell one when blast furnace is built
Surface level line is identified on furnace shell；
2) bore position when taking a line parallel with two elevation lines as residual iron placing between two elevation lines in step 1)
Line chooses one piece of cooling wall on bore position line, removes the furnace shell at this cooling wall and the cooling wall, and selection to be removed
Cooling wall position will be convenient for setting up the groove for flowing out residual iron, then in this position radial bore, if occurring residual iron after the completion of drilling
Situation about can not putting Chu Lai moves up boring point, redrilling immediately, until residual iron can release；
3) residual iron placing removes the bulk cargo in stove by the method for explosion to when going out without residual flowing molten iron；
4) blast furnace cooling stave and furnace shell are removed, when tearing open to the residual iron position being not bled off in stove, with Drilling machine by the upper table of residual iron
Face is cleared up once again；
5) remaining whole furnace shells and cooling wall are removed, after all removing, is sawed using rope and carries out sawing, then transport the residual iron of piecemeal
Go out.
2. stove method is taken off in a kind of blast furnace overhaul according to claim 1, when removing residual iron placing in the step 2)
Bore position at furnace shell and cooling wall when, if lower floor's cooling wall is removed in the position at upper and lower two layers of cooling wall joint.
3. stove method is taken off in a kind of blast furnace overhaul according to claim 1 or 2, in the step 2) during residual iron placing
Bore position line is the center line between two elevation lines in step 1).
4. stove method is taken off in a kind of blast furnace overhaul according to claim 1, in the step 2) during radial bore, bore
Bar holding is horizontal or slightly upwardly tilts.
5. stove method is taken off in a kind of blast furnace overhaul according to claim 1, the residual Tie Tong of piecemeal in the step 5)
Elevator machine travel is crossed, by setting sliding slot outside blast furnace, residual iron is slided into ground, then entrucking transports.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711337222.2A CN108085440B (en) | 2017-12-14 | 2017-12-14 | Furnace method is taken off in a kind of blast furnace overhaul |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711337222.2A CN108085440B (en) | 2017-12-14 | 2017-12-14 | Furnace method is taken off in a kind of blast furnace overhaul |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108085440A true CN108085440A (en) | 2018-05-29 |
| CN108085440B CN108085440B (en) | 2019-07-02 |
Family
ID=62175636
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711337222.2A Expired - Fee Related CN108085440B (en) | 2017-12-14 | 2017-12-14 | Furnace method is taken off in a kind of blast furnace overhaul |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108085440B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108728599A (en) * | 2018-06-22 | 2018-11-02 | 攀钢集团工程技术有限公司 | A kind of Blast Furnace Bottom residue iron method for dismounting |
| CN110846449A (en) * | 2019-11-29 | 2020-02-28 | 中国十九冶集团有限公司 | Blast furnace tapping slag removal method |
| CN111270032A (en) * | 2019-11-29 | 2020-06-12 | 中国十九冶集团有限公司 | Blast furnace hearth residual iron blasting method |
| CN111809012A (en) * | 2020-07-04 | 2020-10-23 | 北京首钢建设集团有限公司 | Construction method for removing accumulated iron in iron-making blast furnace by using residual iron discharging mode |
| 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 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000256717A (en) * | 1999-03-11 | 2000-09-19 | Nippon Steel Corp | Method for removing residual iron in blast furnace |
| CN102337361A (en) * | 2011-10-13 | 2012-02-01 | 山西太钢不锈钢股份有限公司 | Method for positioning discharged residual iron during overhaul of blast furnace |
| CN102399926A (en) * | 2011-11-21 | 2012-04-04 | 攀钢集团攀枝花钢钒有限公司 | Furnace halt residue iron outlet method for middle and large-sized blast furnaces |
| CN103103303A (en) * | 2011-11-15 | 2013-05-15 | 上海宝冶集团有限公司 | Method for disintegrating large-scale blast furnace residual iron |
| CN104726625A (en) * | 2015-02-26 | 2015-06-24 | 河北二十冶建设有限公司 | Method for quickly eliminating waste materials and remaining iron in a furnace during blast furnace overhaul |
| CN107119158A (en) * | 2017-06-09 | 2017-09-01 | 河钢股份有限公司承德分公司 | A kind of residual iron placing method of schreyerite steelmaking furnace |
-
2017
- 2017-12-14 CN CN201711337222.2A patent/CN108085440B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000256717A (en) * | 1999-03-11 | 2000-09-19 | Nippon Steel Corp | Method for removing residual iron in blast furnace |
| CN102337361A (en) * | 2011-10-13 | 2012-02-01 | 山西太钢不锈钢股份有限公司 | Method for positioning discharged residual iron during overhaul of blast furnace |
| CN103103303A (en) * | 2011-11-15 | 2013-05-15 | 上海宝冶集团有限公司 | Method for disintegrating large-scale blast furnace residual iron |
| CN102399926A (en) * | 2011-11-21 | 2012-04-04 | 攀钢集团攀枝花钢钒有限公司 | Furnace halt residue iron outlet method for middle and large-sized blast furnaces |
| CN104726625A (en) * | 2015-02-26 | 2015-06-24 | 河北二十冶建设有限公司 | Method for quickly eliminating waste materials and remaining iron in a furnace during blast furnace overhaul |
| CN107119158A (en) * | 2017-06-09 | 2017-09-01 | 河钢股份有限公司承德分公司 | A kind of residual iron placing method of schreyerite steelmaking furnace |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108728599A (en) * | 2018-06-22 | 2018-11-02 | 攀钢集团工程技术有限公司 | A kind of Blast Furnace Bottom residue iron method for dismounting |
| CN108728599B (en) * | 2018-06-22 | 2020-05-22 | 攀钢集团工程技术有限公司 | Blast furnace bottom residual iron dismantling method |
| CN110846449A (en) * | 2019-11-29 | 2020-02-28 | 中国十九冶集团有限公司 | Blast furnace tapping slag removal method |
| CN111270032A (en) * | 2019-11-29 | 2020-06-12 | 中国十九冶集团有限公司 | Blast furnace hearth residual iron blasting method |
| CN111809012A (en) * | 2020-07-04 | 2020-10-23 | 北京首钢建设集团有限公司 | Construction method for removing accumulated iron in iron-making blast furnace by using residual iron discharging mode |
| 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 |
| CN114854913B (en) * | 2022-05-19 | 2023-06-27 | 宝武集团鄂城钢铁有限公司 | Method for repairing jump-connection of cooling vertical pipe in blast furnace |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108085440B (en) | 2019-07-02 |
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Granted publication date: 20190702 |