CN108085440B - Furnace method is taken off in a kind of blast furnace overhaul - Google Patents
Furnace method is taken off in a kind of blast furnace overhaul Download PDFInfo
- Publication number
- CN108085440B CN108085440B CN201711337222.2A CN201711337222A CN108085440B CN 108085440 B CN108085440 B CN 108085440B CN 201711337222 A CN201711337222 A CN 201711337222A CN 108085440 B CN108085440 B CN 108085440B
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- CN
- China
- Prior art keywords
- furnace
- residual iron
- blast furnace
- cooling wall
- placing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 238000000034 method Methods 0.000 title claims abstract description 39
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 162
- 229910052742 iron Inorganic materials 0.000 claims abstract description 81
- 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
- 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
- 238000005516 engineering process Methods 0.000 description 1
- 235000000396 iron Nutrition 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000006467 substitution reaction 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)
- Blast Furnaces (AREA)
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
Abstract
Furnace bottom carbon brick upper surface elevation line and beams of concrete lower surface elevation line are identified on furnace shell when taking off furnace method the invention discloses a kind of blast furnace overhaul, including 1) building blast furnace；2) bore position when taking some positions as residual iron placing on the blast furnace in 1) between two elevation lines, removes this cooling wall and furnace shell, then radial bore, if occurring the case where residual iron is not put not Chu Lai after the completion of drilling, boring point, redrilling are moved up immediately, until residual iron can release；3) when residual iron placing to no residual iron flows out, bulk cargo in furnace is removed by the method for explosion；4) the residual iron position being not bled off in blast furnace cooling stave and furnace shell to furnace is removed, is cleared up the upper surface of residual iron once again with Drilling machine；5) it after removing whole furnace shells and cooling wall, is sawed using rope and carries 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 furnace, takes off furnace with the method for sawing online after residual iron placing, simple process, safety and construction time are controllable.
Description
Technical field
The invention belongs to blast furnace field, in particular to furnace method is taken off in a kind of blast furnace overhaul.
Background technique
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 furnace, resistance to
Fiery material and the position Tie Kou residual iron below, residual iron remove method it is general there are two types of, one is open in the suitable position of cupola well
Hole releases most of molten iron, removes after being crushed when remaining residual iron takes off furnace by the method for explosion；One is residual iron placing or do not put
Residual iron is directly and furnace shell drags furnace foundation away from together, removes after sawing sawing using rope.
Furnace method is commonly taken off when first method is current blast furnace overhaul, due to every blast-melted erosion furnace bottom carbon brick
Degree it is different, position of opening when 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, the time for taking off furnace in this way can all greatly prolong.
The technics comparing that second method is related to is complicated, and the special equipment of investment is more, and furnace shell is required to remove route
On structure or equipment all remove, so domestic only have a small number of qualified blast furnaces can be implemented, also only only a few is looked forward to
Industry has construction ability.
The method of residual iron placing direct-on-line sawing does not consider usually to use, and major defect is:
1, remaining molten iron capacity is excessive, it is not easy to solidify, and contain rubber constituent in saw of restricting, molten iron is needed to be cooled to one
Determining temperature or less rear can be used, and the main line duration occupied when constructing in this way is longer.
2: in the position Tie Kou of blast furnace, having beams of concrete along the circle of furnace shell one, its upper surface is high after remaining molten iron solidification
It cannot directly be removed behind the lower surface of beams of concrete, residual iron sawing piecemeal.
3: when 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, equally will increase the time of main line construction.
Summary of the invention
For the deficiency in background technique, what the present invention provided a kind of blast furnace overhaul takes off furnace method, comprehensive residual iron placing
And rope saws the advantages of sawing process takes off furnace, takes off furnace, simple process, safety and construction time with the method for sawing online after residual iron placing
Controllably.
The technical solution that the present invention solves technical problem is as follows:
Furnace 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 the position Tie Kou are enclosed along furnace shell one when building blast furnace
Lower surface elevation line be identified on furnace shell；
2) drilling of the line parallel with two elevation lines as residual iron placing when is taken 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 He the cooling wall position, selection is wanted
It the cooling wall position of dismounting will be convenient for setting up the groove for flowing out residual iron, then in this position radial bore, if going out after the completion of drilling
The case where existing residual iron is not put not Chu Lai moves up boring point, redrilling immediately, until residual iron can release；
3) when residual iron placing to no residual iron flows out, the bulk cargo in furnace is removed by the method for explosion；
4) blast furnace cooling stave and furnace shell are removed, when tearing open to the residual iron position being not bled off in furnace, 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, when furnace shell and cooling wall at bore position when removing residual iron placing in the step 2), if the position
It sets at upper layer and lower layer cooling wall joint, then removes lower layer's cooling wall.
Further, the bore position line in the step 2) when residual iron placing be step 1) in two elevation lines between in
Line.
Further, in the step 2) when radial bore, drilling rod holding is horizontal or slightly upwardly tilts.
Further, the residual iron of piecemeal is by elevator machine travel in the step 5), will by the way that sliding slot is arranged 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 furnace, bore position accurate and effective guarantees the timely releasing of residual iron, residual iron placing when residual iron placing
Transporting for piecemeal residual iron has been effectively ensured in the efficient combination of online sawing afterwards, has substantially saved the time of blast furnace overhaul, so that high
Furnace can put into production as early as possible, save the cost, 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.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and specific embodiments:
Fig. 1 is the structural schematic diagram of blast furnace of the present invention；
In figure: the upper surface elevation line, the lower surface elevation line of 2. beams of concretes of furnace bottom carbon brick, 3. are bored when 1. blast furnaces are built
Hole site, 4. cooling walls, 5. sliding slots, 6. furnace shells, 7. iron mouths, 8. residual irons, 9, furnace bottom carbon brick, 10. furnace foundations, 11. bore position lines,
12. beams of concrete, 13. cupola wells.
Specific embodiment
Embodiment 1:
Furnace 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, it is furnace body above furnace foundation 10, 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 was provided with beams of concrete 12 along furnace shell 6 one weeks；It is described
Furnace 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 building blast furnace
The lower surface elevation line 2 of beam is identified on furnace shell 6；
2) drilling of the line parallel with two elevation lines as residual iron placing when is taken 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 do not put not come out to 13 radial bore of cupola well if occurring residual iron 8 after the completion of drilling in this position
The case where, boring point, redrilling are moved up immediately, until residual iron 8 can release；
3) when residual iron placing 8 to no residual iron 8 flows out, the bulk cargo in furnace is removed by the method for explosion；
4) when removing the residual iron position being not bled off in blast furnace cooling stave 4 and furnace shell 6 to furnace, with Drilling machine by the upper of residual iron 8
Surface is cleared up once again；
5) it after removing whole furnace shells 6 and cooling wall 4, is sawed using rope and carries out sawing, then transport the residual iron of piecemeal 8.
When the furnace shell 6 and cooling wall 4 of the bore position 3 in step 2) described in the present embodiment when dismounting residual iron placing, if should
Lower layer's cooling wall 4 is then removed in 4 seam crossing of upper layer and lower layer cooling wall in position.
Bore position line 11 in step 2) described in the present embodiment when residual iron placing may be configured as two absolute altitudes in step 1)
Middle line between line guarantees the need of blast furnace overhaul by bore position line 11 in this way, residual iron can be released effectively after piercing
It wants.
In step 2) described in the present embodiment when radial bore, furnace bottom carbon brick 9 suffers erosion when due to blast fumance feelings
Condition is different, can be horizontal by drilling rod holding or slightly upwardly tilt, and can guarantee to be not in feelings that residual iron is not put not Chu Lai substantially in this way
Condition.
The residual iron 8 of piecemeal can be by elevator machine travel, by the way that cunning is arranged 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 and the direct-on-line sawing of non-residual iron placing of furnace are taken off after the method for the invention and residual iron placing by explosion
Method is compared, and is taken off the method used time 21 days of furnace after residual iron placing by explosion on the large blast furnace of same volume, is taken off furnace and account for
With the main line duration about 9 days；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
8 days method used times of direct-on-line sawing after bright residual iron placing, although this occupies the main line duration for 8 days, simple process, safety and
Construction time is controllable.
The foregoing is merely a prefered embodiment of the invention, but scope of protection of the present invention is not limited thereto, any to be familiar with sheet
In the technical scope disclosed by the present invention, any changes or substitutions that can be easily thought of by those skilled in the art, should all cover
Within protection scope of the present invention.Therefore, the scope of protection of the present invention shall be subject to the scope of protection defined by the claims.
Claims (5)
1. furnace method is taken off in a kind of blast furnace overhaul, include the following steps:
1) the upper surface elevation line of furnace bottom carbon brick and the position Tie Kou are under the beams of concrete that furnace shell one encloses when building blast furnace
Surface level line is identified on furnace shell；
2) bore position of the line parallel with two elevation lines as residual iron placing when is taken 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
It 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
The case where not putting not Chu Lai, boring point, redrilling are moved up immediately, until residual iron can release；
3) when residual iron placing to no residual iron flows out, the bulk cargo in furnace is removed by the method for explosion；
4) blast furnace cooling stave and furnace shell are removed, when tearing open to the residual iron position being not bled off in furnace, 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
Out.
2. furnace 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 layer's cooling wall at upper layer and lower layer cooling wall joint, is removed in the position.
3. furnace method is taken off in a kind of blast furnace overhaul according to claim 1 or 2, in the step 2) when residual iron placing
Bore position line is the middle line between two elevation lines in step 1).
4. furnace method is taken off in a kind of blast furnace overhaul according to claim 1, in the step 2) when radial bore, bore
Bar holding is horizontal or slightly upwardly tilts.
5. furnace method is taken off in a kind of blast furnace overhaul according to claim 1, the residual iron of piecemeal is logical in the step 5)
Elevator machine travel is crossed, by the way that sliding slot is arranged 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 CN108085440A (en) | 2018-05-29 |
| CN108085440B true 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 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
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 |
| 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 |
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| Publication number | Publication date |
|---|---|
| CN108085440A (en) | 2018-05-29 |
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