CN104141021A - Method and equipment system for forming tapping hole in blast furnace - Google Patents
Method and equipment system for forming tapping hole in blast furnace Download PDFInfo
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- CN104141021A CN104141021A CN201410428346.1A CN201410428346A CN104141021A CN 104141021 A CN104141021 A CN 104141021A CN 201410428346 A CN201410428346 A CN 201410428346A CN 104141021 A CN104141021 A CN 104141021A
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Abstract
The invention relates to a method and an equipment system for forming a tapping hole in a blast furnace. The method comprises the following steps: firstly, drilling a hole in the blast furnace along a preset tapping channel from a tapping hole reference point by adopting a mechanical tapping hole forming machine, and withdrawing a drilling rod of the mechanical tapping hole forming machine from the tapping channel when the drilling rod reaches a preset position; and secondly, generating laser by adopting a laser tapping hole forming machine to break through the tapping channel along the hole drilled by the mechanical tapping hole forming machine. The equipment system comprises a mechanical tapping hole forming machine and a laser tapping hole forming machine capable of generating laser, wherein the mechanical tapping hole forming machine and the laser tapping hole forming machine cooperate for breaking through and forming the tapping channel of the blast furnace. The method and the equipment system have the beneficial effects that the wear of a drill bit of the mechanical tapping hole forming machine is reduced; the formed tapping channel is smooth and convenient in tapping; tapping hole forming machine equipment can be prevented from being damaged during splashing at the tapping hole; and the remote operation can be carried out, so that the personal safety of operators is ensured.
Description
Technical field
The present invention relates to a kind of method and blast furnace open hole device systems of blast furnace open hole, for getting through the passage that taps a blast furnace before blast furnace casting.
Background technology
The problems such as along with blast furnace is to large scale development, the formula of blast furnace iron notch stemming is updated, and its intensity and hardness improve, and cause drilling weak effect, the aperture efficiency of iron perforater low, and drilling tool work-ing life is short, consuming cost is high are difficult to solve always.In iron perforater drilling to the fervid layer of stemming, often there is the phenomenon that iron perforater cannot bore, now generally burn tapping outlet by stokehold workman with oxygen, cause the tapping outlet time long, labor intensity of operating staff is large, and operator's personnel safety can not get abundant guarantee.Owing to burning the misoperation of iron mouth with oxygen, make the iron mouth medullary ray of the duct off-design of burning, and duct inwall hollow is uneven, has expanded the sectional area in duct, has destroyed the complete of duct.In the time blocking up, in duct, the slag iron liquid at hollow place cannot flow back to cupola well, under the effect of external and internal pressure, the extruding of slag iron liquid is infiltrated in stemming, causes duct shim, causes next tapping outlet difficulty.
Therefore be necessary to design a kind of method and tapping outlet equipment of blast furnace open hole, to overcome the problems referred to above.
Summary of the invention
The object of the invention is to overcome the defect of prior art, a kind of method and blast furnace open hole device systems of blast furnace open hole are provided, the method and device systems can reduce the wearing and tearing of mechanical iron perforater drill bit, the passage that taps a blast furnace forming is smooth, can ensure mechanical means safety and operator's personnel safety simultaneously.
Technical scheme of the present invention is as follows:
A method for blast furnace open hole, comprises the following steps:
Described iron mouth comprises the stemming of the iron mouth frame that is positioned on last furnace shell, iron mouth frame and is positioned at the lay bricks mud drum of top of furnace bottom, described mud drum comprises the region that mud drum is corroded by slag, iron, establish an iron notch reference point at iron mouth frame outer surface, default from iron notch reference point and sea line have angle a downward be the direction of passage of tapping a blast furnace by the direction of the stemming in iron mouth frame, mud drum successively;
Adopt mechanical iron perforater along the default channel direction of tapping a blast furnace toward blast furnace internal drilling, in the time that the drilling rod of described mechanical iron perforater is drilled into predetermined position, passage taps a blast furnace described in described drilling rod is exited;
Adopt laser iron perforater to produce laser, described laser enters the duct that described mechanical iron perforater is drilled with, and utilizes the heat of laser to get through the remaining passage that taps a blast furnace, and when molten iron is when flowing out in blast furnace, closes laser iron perforater, completes the process of tapping outlet.
Further, when the drilling rod of described mechanical iron perforater is drilled into mud drum by the region of slag, iron erosion, passage taps a blast furnace described in described drilling rod exits.
Further, described mechanical iron perforater and laser iron perforater be fixed installation separately, and the Laser emission angle of described laser iron perforater is pre-set, when the operating path of laser is left in described drilling rod rotation, can start laser iron perforater.
Further, described laser iron perforater is fixed on mechanical iron perforater, described in described drilling rod exits, taps a blast furnace after passage, and rotating machinery iron perforater, to laser tapping outlet machine side to the passage that taps a blast furnace, starts described laser iron perforater after adjustment Laser emission angle.
A kind of blast furnace open hole device systems, comprise mechanical iron perforater and can lasing laser iron perforater, described mechanical iron perforater comprises drilling rod, the operating direction of described drilling rod and laser is identical with the channel direction of tapping a blast furnace of blast furnace, tap a blast furnace described in the being length of passage of the operation length sum of the operation length of described drilling rod and described laser.
Further, the operation length of described drilling rod is the distance in the region corroded by slag, iron from iron notch reference point to mud drum on passage of tapping a blast furnace.
Further, separately fixed installation of described mechanical iron perforater and laser iron perforater.
Further, described laser iron perforater is fixed on mechanical iron perforater.
Further, the mode that described laser iron perforater is bolted is fixed on mechanical iron perforater.
The present invention has following beneficial effect: adopt mechanical iron perforater and laser tapping outlet coordinating operation, avoid the drill bit of mechanical iron perforater to force to bore to open to ooze iron layer, wearing and tearing drill bit, reduces the consumption of drill bit; The operating distance of drilling rod is shorter, and drilling rod easily exits from the passage that taps a blast furnace, and is easier to protection equipment; After drilling rod is exited, to original position, avoid mechanical means to damage in the time of the splash of iron mouth mechanical iron perforater cycle; Adopt laser iron perforater to beat tapping outlet, the passage that taps a blast furnace of formation is smooth, is convenient to tap a blast furnace; Can realize remote control, in the time there is spray iron phenomenon in iron mouth, personnel safety that can effective guarantee operator.
Brief description of the drawings
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
The schematic diagram of the mechanical iron perforater tapping outlet that Fig. 1 provides for the embodiment of the present invention;
The schematic diagram of the laser iron perforater tapping outlet that Fig. 2 provides for the embodiment of the present invention;
Wherein: 1, furnace shell; 2, iron mouth frame; 3, iron notch reference point; 4, furnace bottom is laid bricks; 5, the passage that taps a blast furnace; 6, the region that mud drum is corroded by slag, iron; 7, mud drum; 8, mechanical iron perforater; 9, drilling rod; 10, laser iron perforater; 11, laser; A, passage horizontal sextant angle taps a blast furnace.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiment.Based on the embodiment in the present invention, all other embodiment that those of ordinary skill in the art obtain under the prerequisite of not making creative work, belong to the scope of protection of the invention.
As depicted in figs. 1 and 2, the embodiment of the present invention provides a kind of method of blast furnace open hole, comprises the following steps:
(1) described iron mouth comprises the stemming of the iron mouth frame 2 that is positioned on last furnace shell 1, iron mouth frame 2 and is positioned at the lay bricks mud drum 7 of 4 tops of furnace bottom, described mud drum 7 comprises the region 6 that mud drum is corroded by slag, iron, establish an iron notch reference point 3 at iron mouth frame 2 outer surfaces, default is the direction of passage 5 of tapping a blast furnace by the direction of the stemming in iron mouth frame 2, mud drum 8 downwards from iron notch reference point 3 and the sea line a that has angle successively;
(2) adopt mechanical iron perforater 8 along default passage 5 directions of tapping a blast furnace toward blast furnace internal drilling, in the time that the drilling rod 9 of described mechanical iron perforater 8 is drilled into predetermined position, passage 5 taps a blast furnace described in described drilling rod 9 is exited;
(3) adopt laser iron perforater 10 to produce laser 11, the duct that described laser 11 is drilled with along described mechanical iron perforater 8 enters in blast furnace, utilizes the heat of laser 11 to get through the remaining passage 5 that taps a blast furnace; When molten iron is when flowing out in blast furnace, close laser iron perforater 10, the process that completes tapping outlet is got through the passage 5 that taps a blast furnace.
In the method for the blast furnace open hole that the present embodiment provides, the molten iron discharging position that described iron notch reference point 3 is expection, is the tapping outlet work standard point of setting; The direction of the described passage 5 that taps a blast furnace is predefined tapping outlet operating direction.
As depicted in figs. 1 and 2, in the method for the blast furnace open hole that the present embodiment provides, preferably, in the time that the drilling rod 9 of described mechanical iron perforater 8 is drilled into mud drum by the region 6 of slag, iron erosion, passage 5 taps a blast furnace described in described drilling rod 9 is exited; And then adopt laser iron perforater 10 to produce laser 11, and utilize the region 6 that mud drum is corroded by slag, iron described in the heat melts of laser 11, get through the remaining passage 5 that taps a blast furnace.In actual job process, can avoid drill bit to open while oozing iron layer by heavy wear forcing to bore, can be cost-saving; The passage that taps a blast furnace that adopts laser to get through is smooth, is convenient to tap a blast furnace, the infringement to iron mouth that can avoid burning iron mouth with oxygen time, misoperation causes.
In the method for the blast furnace open hole that the present embodiment provides, described mechanical iron perforater 8 and laser iron perforater 10 can separately fixedly mount, laser 11 emission angles of described laser iron perforater 10 are pre-set, when the operating path of laser 11 is left in described drilling rod 9 rotations, can start laser iron perforater 10.Described laser iron perforater 10 also can be fixed on mechanical iron perforater 8, described in exiting, described drilling rod 9 taps a blast furnace after passage 5, rotating machinery iron perforater 8, to laser iron perforater 10 towards the passage 5 that taps a blast furnace, starts described laser iron perforater 10 after adjustment laser 11 emission angles.Preferably, take the first structure, in actual job process, can greatly shorten described drilling rod 9 withdraws from the passage 5 that taps a blast furnace and starts the timed interval between operation to described laser iron perforater 10, so laser iron perforater 10 can be fixed on to somewhere, the angle of the laser 11 of its generation is adjustable flexibly,, to the process of original position, can open laser iron perforater 10 at once and carry out operation, thereby can shorten the time of tapping outlet in mechanical iron perforater 8 cycles.
In the method for the blast furnace open hole that the present embodiment provides, described laser iron perforater 10 is connected with remote control terminal, unlatching that can Long-distance Control laser iron perforater 10, closes and the emission angle of laser 11.Described remote control terminal adopts remote computer control, and the remote control program of existing technical field of automatic control can meet the control requirement to described laser iron perforater 10 in the present embodiment, does not need to programme in addition again.
For realizing the method for above-mentioned blast furnace open hole, the embodiment of the present invention provides a kind of device systems of blast furnace open hole, comprise mechanical iron perforater 8 and the laser iron perforater 10 that can produce laser 11, described mechanical iron perforater 8 comprises drilling rod 9, the operating direction of described drilling rod 9 and laser 11 is identical with passage 5 directions of tapping a blast furnace of blast furnace, tap a blast furnace described in the being length of passage 5 of the operation length sum of the operation length of described drilling rod 9 and described laser 11.
The operation length of described drilling rod 9 is the distance in the region 6 corroded by slag, iron from iron notch reference point 3 to mud drum on passage 5 of tapping a blast furnace.
In the blast furnace open hole device systems that the present embodiment provides, described mechanical iron perforater 8 and separately fixed installation of laser iron perforater 10; Or described laser iron perforater 10 is fixed on mechanical iron perforater 8.Preferably, take the first structure.In the time taking the second structure, described laser iron perforater 10 is bolted or the mode such as welding is fixed on mechanical iron perforater 8.
In the blast furnace open hole device systems that the present embodiment provides, described laser iron perforater 10 is connected with remote control terminal, unlatching that can Long-distance Control laser iron perforater 10, closes and the emission angle of laser 11.Described remote control terminal adopts remote computer control, and the remote control program of existing technical field of automatic control can meet the control requirement to described laser iron perforater 10 in the present embodiment, does not need to programme in addition again.Can realize like this remote control, in the time there is spray iron phenomenon in iron mouth, personnel safety that can effective guarantee operator.
The embodiment of the present invention has following beneficial effect: adopt mechanical iron perforater and laser tapping outlet coordinating operation, avoid the drill bit of mechanical iron perforater to force to bore to open to ooze iron layer, wearing and tearing drill bit, reduces the consumption of drill bit; The operating distance of drilling rod is shorter, and drilling rod easily exits from the passage that taps a blast furnace, and is easier to protection equipment; After drilling rod is exited, to original position, avoid mechanical means to damage in the time of the splash of iron mouth mechanical iron perforater cycle; Adopt laser iron perforater to beat tapping outlet, the passage that taps a blast furnace of formation is smooth, is convenient to tap a blast furnace; Can realize remote control, in the time there is spray iron phenomenon in iron mouth, personnel safety that can effective guarantee operator.
The foregoing is only preferred embodiment of the present invention, in order to limit the present invention, within the spirit and principles in the present invention not all, any amendment of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (9)
1. a method for blast furnace open hole, is characterized in that, comprises the following steps:
Described iron mouth comprises the stemming of the iron mouth frame (2) that is positioned on last furnace shell (1), iron mouth frame (2) and is positioned at the lay bricks mud drum (7) of (4) top of furnace bottom, described mud drum (7) comprises the region (6) that mud drum is corroded by slag, iron, establish an iron notch reference point (3) at iron mouth frame (2) outer surface, default from iron notch reference point (3) and sea line have angle a downwards successively the direction of the stemming by iron mouth frame (2), mud drum (7) be the direction of passage (5) of tapping a blast furnace;
Adopt mechanical iron perforater (8) along the default passage that taps a blast furnace (5) direction toward blast furnace internal drilling, in the time that the drilling rod (9) of described mechanical iron perforater (8) is drilled into predetermined position, passage (5) taps a blast furnace described in described drilling rod (9) is exited;
Adopt laser iron perforater (10) to produce laser (11), the passage that taps a blast furnace (5) is got through in the duct that described laser (11) is drilled with along described mechanical iron perforater (8).
2. the method for blast furnace open hole according to claim 1, is characterized in that: when the drilling rod (9) of described mechanical iron perforater (8) is drilled into mud drum by the region (6) of slag, iron erosion, passage (5) taps a blast furnace described in described drilling rod (9) exits.
3. the method for blast furnace open hole according to claim 1, it is characterized in that: described mechanical iron perforater (8) and laser iron perforater (10) be fixed installation separately, laser (11) emission angle of described laser iron perforater (10) is pre-set, when the operating path of laser (11) is left in described drilling rod (9) rotation, can start laser iron perforater (10).
4. the method for blast furnace open hole according to claim 1, it is characterized in that: described laser iron perforater (10) is fixed on mechanical iron perforater (8), described in exiting, described drilling rod (9) taps a blast furnace after passage (5), rotating machinery iron perforater (8), to laser iron perforater (10) towards the passage that taps a blast furnace (5), starts described laser iron perforater (10) after adjustment laser (11) emission angle.
5. a blast furnace open hole device systems, it is characterized in that: comprise mechanical iron perforater (8) and can produce the laser iron perforater (10) of laser (11), described mechanical iron perforater (8) comprises drilling rod (9), the operating direction of described drilling rod (9) and laser (11) is identical with the passage that taps a blast furnace (5) direction of blast furnace, tap a blast furnace described in the being length of passage (5) of the operation length sum of the operation length of described drilling rod (9) and described laser (11).
6. blast furnace open hole device systems according to claim 5, is characterized in that: the operation length of described drilling rod (9) for the passage (5) that taps a blast furnace upper from iron notch reference point (3) to mud drum by the distance in the region (6) of slag, iron erosion.
7. blast furnace open hole device systems according to claim 5, is characterized in that: described mechanical iron perforater (8) and laser iron perforater (10) be fixed installation separately.
8. blast furnace open hole device systems according to claim 5, is characterized in that: described laser iron perforater (10) is fixed on mechanical iron perforater (8).
9. blast furnace open hole device systems according to claim 8, is characterized in that: the mode that described laser iron perforater (10) is bolted is fixed on mechanical iron perforater (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410428346.1A CN104141021B (en) | 2014-08-28 | 2014-08-28 | A kind of method of blast furnace open hole and blast furnace open hole device systems |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410428346.1A CN104141021B (en) | 2014-08-28 | 2014-08-28 | A kind of method of blast furnace open hole and blast furnace open hole device systems |
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| CN104141021A true CN104141021A (en) | 2014-11-12 |
| CN104141021B CN104141021B (en) | 2015-11-11 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110358882A (en) * | 2019-08-27 | 2019-10-22 | 广东韶钢松山股份有限公司 | Blast furnace taphole angle acquisition methods and blast furnace taphole angle regulation method |
| CN110628973A (en) * | 2018-08-23 | 2019-12-31 | 广东韶钢松山股份有限公司 | Treatment method for iron leakage of blast furnace iron notch |
| CN112048585A (en) * | 2020-08-07 | 2020-12-08 | 山西太钢不锈钢股份有限公司 | Blast furnace taphole hole opening method |
| CN112257590A (en) * | 2020-10-22 | 2021-01-22 | 中冶南方工程技术有限公司 | Automatic detection method and system for working state of blast furnace taphole and storage medium |
| CN113957193A (en) * | 2021-11-01 | 2022-01-21 | 桂林方兴机械有限公司 | Positioning device of iron notch drill |
| CN114111332A (en) * | 2021-11-26 | 2022-03-01 | 攀钢集团攀枝花钢钒有限公司 | Method for improving discharge efficiency of smelting furnace |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5354103A (en) * | 1976-10-27 | 1978-05-17 | Nippon Steel Corp | Opening method for tapping hole of blast furnace |
| JPS552748A (en) * | 1978-06-20 | 1980-01-10 | Kobe Steel Ltd | Tapping method for tapping hole of blast furnace |
| JPS58189311A (en) * | 1982-04-27 | 1983-11-05 | Kawasaki Steel Corp | Method for opening tap hole of blast furnace |
| US4431171A (en) * | 1982-03-04 | 1984-02-14 | Bailey Industrial Products, Inc. | Apparatus for opening the tap hole of a metallurgical furnace |
| US4436285A (en) * | 1982-01-20 | 1984-03-13 | Woodings Robert T | Method and apparatus for opening blast-furnace tap holes |
| CN201077844Y (en) * | 2007-04-27 | 2008-06-25 | 宜昌市燕狮科技开发有限责任公司 | Large-sized wall hanging type full hydraulic self-controlled machine for opening tap hole |
| CN103890198A (en) * | 2011-09-27 | 2014-06-25 | 新日铁住金工程技术株式会社 | Blocking/opening method, blocking method and blocking/opening apparatus |
-
2014
- 2014-08-28 CN CN201410428346.1A patent/CN104141021B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5354103A (en) * | 1976-10-27 | 1978-05-17 | Nippon Steel Corp | Opening method for tapping hole of blast furnace |
| JPS552748A (en) * | 1978-06-20 | 1980-01-10 | Kobe Steel Ltd | Tapping method for tapping hole of blast furnace |
| US4436285A (en) * | 1982-01-20 | 1984-03-13 | Woodings Robert T | Method and apparatus for opening blast-furnace tap holes |
| US4431171A (en) * | 1982-03-04 | 1984-02-14 | Bailey Industrial Products, Inc. | Apparatus for opening the tap hole of a metallurgical furnace |
| JPS58189311A (en) * | 1982-04-27 | 1983-11-05 | Kawasaki Steel Corp | Method for opening tap hole of blast furnace |
| CN201077844Y (en) * | 2007-04-27 | 2008-06-25 | 宜昌市燕狮科技开发有限责任公司 | Large-sized wall hanging type full hydraulic self-controlled machine for opening tap hole |
| CN103890198A (en) * | 2011-09-27 | 2014-06-25 | 新日铁住金工程技术株式会社 | Blocking/opening method, blocking method and blocking/opening apparatus |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110628973A (en) * | 2018-08-23 | 2019-12-31 | 广东韶钢松山股份有限公司 | Treatment method for iron leakage of blast furnace iron notch |
| CN110358882A (en) * | 2019-08-27 | 2019-10-22 | 广东韶钢松山股份有限公司 | Blast furnace taphole angle acquisition methods and blast furnace taphole angle regulation method |
| CN112048585A (en) * | 2020-08-07 | 2020-12-08 | 山西太钢不锈钢股份有限公司 | Blast furnace taphole hole opening method |
| CN112257590A (en) * | 2020-10-22 | 2021-01-22 | 中冶南方工程技术有限公司 | Automatic detection method and system for working state of blast furnace taphole and storage medium |
| CN112257590B (en) * | 2020-10-22 | 2023-08-01 | 中冶南方工程技术有限公司 | Automatic detection method, system and storage medium for working state of blast furnace tap hole |
| CN113957193A (en) * | 2021-11-01 | 2022-01-21 | 桂林方兴机械有限公司 | Positioning device of iron notch drill |
| CN114111332A (en) * | 2021-11-26 | 2022-03-01 | 攀钢集团攀枝花钢钒有限公司 | Method for improving discharge efficiency of smelting furnace |
| CN114111332B (en) * | 2021-11-26 | 2023-11-21 | 攀钢集团攀枝花钢钒有限公司 | Method for improving smelting furnace discharging efficiency |
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