CN105838835A - Blast furnace blowing-in iron notch device and blast furnace blowing-in iron notch method - Google Patents
Blast furnace blowing-in iron notch device and blast furnace blowing-in iron notch method Download PDFInfo
- Publication number
- CN105838835A CN105838835A CN201610455652.3A CN201610455652A CN105838835A CN 105838835 A CN105838835 A CN 105838835A CN 201610455652 A CN201610455652 A CN 201610455652A CN 105838835 A CN105838835 A CN 105838835A
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- blast furnace
- steel pipe
- ferrum
- iron notch
- ferrum mouth
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B7/00—Blast furnaces
- C21B7/12—Opening or sealing the tap holes
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Vertical, Hearth, Or Arc Furnaces (AREA)
Abstract
The invention relates to a blast furnace blowing-in iron notch device and a blast furnace blowing-in iron notch method and belongs to the technical field of steel production. The blast furnace blowing-in iron notch device comprises a furnace wall iron notch combined brick, an iron notch channel and a mud drum covering the iron notch channel, wherein at least one steel pipe is embedded in the mud drum and the iron notch channel; one end of the steel pipe is positioned in a blast furnace, and the other end of the steel pipe sequentially passes through the mud drum and the iron notch channel and is positioned outside the blast furnace; the part, which is positioned outside the blast furnace, of the steel pipe is provided with a three-way valve; the three-way valve is respectively connected with a compressed air tank and a high-pressure oxygen tank by virtue of pipelines; the three-way valve is electrically connected with an electric control device; the electric control device is electrically connected with the blast furnace. The blast furnace blowing-in iron notch device has the advantages of ensuring smooth first furnace iron notch during blowing of the blast furnace, saving manpower and material resources and avoiding environmental pollution.
Description
Technical field
The present invention relates to a kind of blast furnace opening ferrum mouth device and method, belong to technical field of steel production, be particularly suited for during blast furnace opening opening the ferrum mouth of the first stove ferrum.
Background technology
Blast furnace ironmaking is the main method of modern ironmaking, is the important step during iron and steel produces.During blast fumance, from furnace roof loading iron ore, coke, slag making with flux (limestone), it is blown into preheated air from being positioned at the lower furnace air port along stove week.The carbon monoxide that at high temperature carbon in coke generates with the oxygen burning blasted in air, removes the oxygen in iron ore in stove, thus reduction obtains ferrum in uphill process.The molten iron produced, from flux combination generation slags such as the releasing of ferrum mouth, the impurity not reduced in iron ore and limestone, is discharged from cinder notch, and the coal gas of generation is derived from furnace roof, after removing dust, as the fuel of air stove, heating furnace, coke oven, boiler etc..
In iron and steel enterprise the big-and-middle maintenance of blast furnace terminate after, carry out blowing-in operation operation time, bed rearrangement blast furnace is in room temperature state, ferrum mouth passage iron port gun mud is blocked, light a fire to from blow-on and form the slag ferrum of liquid, time interval is up to ten several hours, when opening the first stove ferrum after accumulating a certain amount of slag ferrum in cupola well, the stemming in ferrum mouth passage is the most sintered hardening, and the tapping machine of stokehold is beaten motionless.Existing solution way is typically, and flushing and casting work oxygen burns tapping outlet discharge slag ferrum, but there is problems in that one, operating time length, workload big；Two, there will be substantial amounts of tobacco and airborne dust during burning ferrum mouth, pollute environment；Three, can not quickly beat tapping outlet in the short time, can cause and suppress wind, cause hanging, time serious, even can burn out air port.
Summary of the invention
For solving above technical deficiency, the invention provides a kind of blast furnace opening ferrum mouth device and method, can make during blast furnace opening, to open the first stove ferrum mouth smooth, use manpower and material resources sparingly, it is to avoid pollute environment.
Technical scheme is as follows: a kind of blast furnace opening ferrum mouth device, including furnace wall ferrum mouth modular tile, ferrum mouth passage and the mud drum covering ferrum mouth passage, it is embedded with at least steel pipe in described mud drum and ferrum mouth passage, one end of described steel pipe is positioned at blast furnace, the other end of steel pipe passes sequentially through mud drum and ferrum mouth passage is positioned at outside blast furnace, the position being positioned at outside blast furnace on described steel pipe is provided with three-way valve, described three-way valve is connected to compressed air cylinder and hyperbaric oxygen gas tank by pipeline, three-way valve is electrically connected with electric control gear, and described electric control gear electrically connects with blast furnace.
Technical scheme also includes: described blast furnace is provided with piezometer and thermometer, and described piezometer and thermometer electrically connect with electric control gear.
Technical scheme also includes: the quantity of described steel pipe is two, and two steel pipes are arranged side by side.
Technical scheme also includes: the quantity of described steel pipe is three, and three steel pipes are triangularly arranged.
Technical scheme also includes: described steel pipe is positioned at the end of blast furnace part and is provided with blind plate, and steel pipe is positioned at blast furnace position and is provided with one group of perforate.
Technical scheme also includes: described perforate is positioned at the bottom of steel pipe, and the diameter of perforate is 10mm, and the spacing between adjacent apertures is 100～200mm.
Technical scheme also includes: described steel pipe is positioned at blast furnace end partly and is positioned at 1/3 position of blast furnace diameter.
A kind of blast furnace opening ferrum mouth method, mainly comprises the steps that
Step one, at the pre-buried at least steel pipe of ferrum mouth passage and mud drum, steel pipe mud drum to be stretched out certain length, reaches 1/3 position of blast furnace diameter；
Step 2, steel pipe is positioned at inside blast furnace to set up separately puts perforate, and perforate is positioned at steel pipe at lower half circumferential position, and perforate is the circular hole of diameter 10mm, and adjacent apertures blocks along steel pipe length direction spacing 100～200mm, steel pipe front end blind plate；
Step 3, steel pipe is positioned at blast furnace outer portion connecting tee valve, and three-way valve connects compressed air cylinder and hyperbaric oxygen gas tank respectively by pipeline, and oxygen pressure is 1.0MPa；
Step 4, compressed air it is passed through after blast furnace opening, compressed-air actuated pressure is equal to cold blast pressure+100～300KPa, decline and the carrying out of reduction reaction with furnace charge, generate liquid slag ferrum and enter cupola well, now, electric control gear action control is opened the hyperbaric oxygen air valve of hyperbaric oxygen gas tank, is closed the compressed air valve of compressed air cylinder；
Step 5, with the raising of accumulation slag ferrum temperature in blast furnace, in ferrum mouth passage, steel pipe all melts, and now, electric control gear action control closes three-way valve, stops sending oxygen；
Step 6, steel pipe forms slag Tie Tong road after all melting, and melted slag ferrum emits from slag Tie Tong road, and the first stove outspoken speed of ferrum ferrum is opened.
The invention has the beneficial effects as follows: by steel pipe reserved in ferrum mouth passage and mud drum, and use electric control gear to carry out auto-action control, compressed air is passed first into after blast furnace opening, decline and the carrying out of reduction reaction with furnace charge, generate liquid slag ferrum and enter cupola well, now open hyperbaric oxygen air valve, close compressed air valve, heat is released by oxygen combustion, the temperature of slag ferrum is accumulated in improving cupola well, improve slag ferrum mobility, in cylinder, steel pipe in ferrum mouth passage is all melted by slag ferrum accumulation to a certain extent, steel pipe fusing thus a Ge Zha Tie Tong road is formed by the liquid slag ferrum generated, avoid stemming in slag Tie Tong road to sinter the hardening ferrum mouth difficulty caused for a long time to open, ensure that blast furnace opening is smoothed out, save manpower and materials.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the present invention.
In figure: 1, furnace wall ferrum mouth modular tile, 2, mud drum, 3, ferrum mouth passage, 4, steel pipe, 41, perforate, 42, blind plate, 5, three-way valve, 6, electric control gear, 7, compressed air cylinder, 8, hyperbaric oxygen gas tank.
Detailed description of the invention
Below in conjunction with accompanying drawing, by embodiment, the invention will be further described.
As it is shown in figure 1, a kind of blast furnace opening ferrum mouth device of the present invention, including furnace wall ferrum mouth modular tile 1, ferrum mouth passage 3 and the mud drum 2 covering ferrum mouth passage 3, in mud drum 2 and ferrum mouth passage 3, it is embedded with at least steel pipe 4.One end of steel pipe 4 is positioned at blast furnace, the other end of steel pipe 4 passes sequentially through mud drum 2 and ferrum mouth passage 3 is positioned at outside blast furnace, the position being positioned at outside blast furnace on steel pipe 4 is provided with three-way valve 5, three-way valve 5 is connected to compressed air cylinder 7 and hyperbaric oxygen gas tank 8 by pipeline, and three-way valve 5 and blast furnace electrically connect with electric control gear.
By steel pipe reserved in ferrum mouth passage and mud drum, and use electric control gear to carry out auto-action control, compressed air is passed first into after blast furnace opening, decline and the carrying out of reduction reaction with furnace charge, generate liquid slag ferrum and enter cupola well, now open hyperbaric oxygen air valve, close compressed air valve, heat is released by oxygen combustion, the temperature of slag ferrum is accumulated in improving cupola well, improve slag ferrum mobility, in cylinder, steel pipe in ferrum mouth passage is all melted by slag ferrum accumulation to a certain extent, steel pipe fusing thus a Ge Zha Tie Tong road is formed by the liquid slag ferrum generated, avoid stemming in slag Tie Tong road to sinter the hardening ferrum mouth difficulty caused for a long time to open, ensure that blast furnace opening is smoothed out, save manpower and materials.
In embodiments of the invention, blast furnace is provided with piezometer and thermometer, and this piezometer and thermometer electrically connect with electric control gear 6, to improve control accuracy.Steel pipe 4 is positioned at the end of blast furnace part and is provided with blind plate 42, and steel pipe 4 is positioned at blast furnace position and is provided with one group of perforate 41, and specifically, perforate 41 is positioned at the bottom of steel pipe 4, and the diameter of perforate 41 is 10mm, and the spacing between adjacent apertures 41 is 100～200mm.Steel pipe 4 is positioned at blast furnace end partly and is positioned at 1/3 position of blast furnace diameter.So design is advantageous in that, it is possible to increase the formation speed in slag Tie Tong road and quality, and then is easily opened ferrum mouth.
In embodiments of the invention one, the quantity of embedded steel tube 4 is two, and two steel pipes 4 are arranged side by side, it is possible to increase the reliability that device uses, it is to avoid the problem that can not open ferrum mouth that the error of one of them steel pipe occurs.
In embodiments of the invention two, the quantity of embedded steel tube 4 is three, and three steel pipes 4 are triangularly arranged, so design is advantageous in that, it is possible to form the size in slag Tie Tong road, and setting triangular in shape after adding big steel pipe fusing, the velocity of liquid assets of slag ferrum can be improved, and then improve ferrum mouth opening speed.
A kind of blast furnace opening ferrum mouth method of the present invention, mainly comprises the steps that
Step one, at the pre-buried at least steel pipe of ferrum mouth passage and mud drum, steel pipe mud drum to be stretched out certain length, reaches 1/3 position of blast furnace diameter；
Step 2, steel pipe is positioned at inside blast furnace to set up separately puts perforate, and perforate is positioned at steel pipe at lower half circumferential position, and perforate is the circular hole of diameter 10mm, and adjacent apertures blocks along steel pipe length direction spacing 100～200mm, steel pipe front end blind plate；
Step 3, steel pipe is positioned at blast furnace outer portion connecting tee valve, and three-way valve connects compressed air cylinder and hyperbaric oxygen gas tank respectively by pipeline, and oxygen pressure is 1.0MPa；
Step 4, compressed air it is passed through after blast furnace opening, compressed-air actuated pressure is equal to cold blast pressure+100～300KPa, decline and the carrying out of reduction reaction with furnace charge, generate liquid slag ferrum and enter cupola well, now, electric control gear action control is opened the hyperbaric oxygen air valve of hyperbaric oxygen gas tank, is closed the compressed air valve of compressed air cylinder；
Step 5, with the raising of accumulation slag ferrum temperature in blast furnace, in ferrum mouth passage, steel pipe all melts, and now, electric control gear action control closes three-way valve, stops sending oxygen；
Step 6, steel pipe forms slag Tie Tong road after all melting, and melted slag ferrum emits from slag Tie Tong road, and the first stove outspoken speed of ferrum ferrum is opened.
The above, be only presently preferred embodiments of the present invention, the present invention not does any pro forma restriction, done all any amendment, equivalent and improvement etc., should be included within the scope of the present invention.
Claims (8)
1. a blast furnace opening ferrum mouth device, including furnace wall ferrum mouth modular tile (1), ferrum mouth passage (3) and the mud drum (2) of covering ferrum mouth passage (3), it is characterized in that: in described mud drum (2) and ferrum mouth passage (3), be embedded with at least steel pipe (4), one end of described steel pipe (4) is positioned at blast furnace, the other end of steel pipe (4) passes sequentially through mud drum (2) and ferrum mouth passage (3) is positioned at outside blast furnace, the position being positioned at outside blast furnace on described steel pipe (4) is provided with three-way valve (5), described three-way valve (5) is connected to compressed air cylinder (7) and hyperbaric oxygen gas tank (8) by pipeline, three-way valve (5) is electrically connected with electric control gear (6), described electric control gear (6) electrically connects with blast furnace.
2. a kind of blast furnace opening ferrum mouth device as claimed in claim 1, it is characterised in that: described blast furnace is provided with piezometer and thermometer, described piezometer and thermometer and electrically connects with electric control gear (6).
3. a kind of blast furnace opening ferrum mouth device as claimed in claim 1, it is characterised in that: the quantity of described steel pipe (4) is two, and two steel pipes (4) are arranged side by side.
4. a kind of blast furnace opening ferrum mouth device as claimed in claim 1, it is characterised in that: the quantity of described steel pipe (4) is three, and three steel pipes (4) are triangularly arranged.
5. a kind of blast furnace opening ferrum mouth device as described in Claims 1-4 is arbitrary, it is characterised in that: described steel pipe (4) is positioned at the end of blast furnace part and is provided with blind plate (42), and steel pipe (4) is positioned at blast furnace position and is provided with one group of perforate (41).
6. a kind of blast furnace opening ferrum mouth device as claimed in claim 5, it is characterised in that: described perforate (41) is positioned at the bottom of steel pipe (4), and the diameter of perforate (41) is 10mm, and the spacing between adjacent apertures (41) is 100～200mm.
7. a kind of blast furnace opening ferrum mouth device as claimed in claim 5, it is characterised in that: described steel pipe (4) is positioned at blast furnace end partly and is positioned at 1/3 position of blast furnace diameter.
8. a blast furnace opening ferrum mouth method, mainly comprises the steps that
Step one, at ferrum mouth passage (3) and the pre-buried at least steel pipe of mud drum (2) (4), steel pipe (4) mud drum to be stretched out (2) certain length, reaches 1/3 position of blast furnace diameter；
Step 2, steel pipe (4) is positioned at inside blast furnace to set up separately puts perforate (41), perforate (41) is positioned at steel pipe (4) at lower half circumferential position, perforate (41) is the circular hole of diameter 10mm, adjacent apertures (41) blocks along steel pipe length direction spacing 100～200mm, steel pipe (4) front end blind plate (42)；
Step 3, steel pipe (4) is positioned at blast furnace outer portion connecting tee valve (5), and three-way valve (5) connects compressed air cylinder (7) and hyperbaric oxygen gas tank (8) respectively by pipeline, and oxygen pressure is 1.0MPa；
Step 4, compressed air it is passed through after blast furnace opening, compressed-air actuated pressure is equal to cold blast pressure+100～300KPa, decline and the carrying out of reduction reaction with furnace charge, generate liquid slag ferrum and enter cupola well, now, electric control gear (6) action control is opened the hyperbaric oxygen air valve of hyperbaric oxygen gas tank (8), is closed the compressed air valve of compressed air cylinder (7)；
Step 5, with the raising of accumulation slag ferrum temperature in blast furnace, ferrum mouth passage (3) interior steel pipe (4) all melts, and now, electric control gear (6) action control closes three-way valve (5), stops sending oxygen；
Step 6, forms slag Tie Tong road after steel pipe (4) all fusings, and melted slag ferrum emits from slag Tie Tong road, and the first stove outspoken speed of ferrum ferrum is opened.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610455652.3A CN105838835A (en) | 2016-06-22 | 2016-06-22 | Blast furnace blowing-in iron notch device and blast furnace blowing-in iron notch method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610455652.3A CN105838835A (en) | 2016-06-22 | 2016-06-22 | Blast furnace blowing-in iron notch device and blast furnace blowing-in iron notch method |
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| CN105838835A true CN105838835A (en) | 2016-08-10 |
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| CN201610455652.3A Pending CN105838835A (en) | 2016-06-22 | 2016-06-22 | Blast furnace blowing-in iron notch device and blast furnace blowing-in iron notch method |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109468422A (en) * | 2018-12-15 | 2019-03-15 | 江苏盛耐新材料有限公司 | A kind of blast furnace entirety tapping hole brick |
| 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 |
| CN111607674A (en) * | 2020-06-29 | 2020-09-01 | 盐城市联鑫钢铁有限公司 | Method and device for promoting rapid temperature rise of blast furnace hearth |
| CN111705176A (en) * | 2020-05-21 | 2020-09-25 | 南京钢铁股份有限公司 | Method for discharging slag iron by using oxygen lance during blow-in of blast furnace and oxygen lance thereof |
| CN112575135A (en) * | 2020-12-25 | 2021-03-30 | 北京金泰烁昌科技有限公司 | Blast furnace taphole dredging and blockage removing equipment and using method thereof |
| CN114908206A (en) * | 2022-06-08 | 2022-08-16 | 广东韶钢松山股份有限公司 | Blast furnace opening iron notch device and operation method |
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| CN202157080U (en) * | 2011-07-12 | 2012-03-07 | 武汉钢铁(集团)公司 | Wind leading device for blow-in |
| CN203559066U (en) * | 2013-11-19 | 2014-04-23 | 四川省川威集团有限公司 | Blow-in taphole structure of blast furnace |
| CN103757167A (en) * | 2014-01-14 | 2014-04-30 | 攀钢集团成都钢钒有限公司 | Iron notch pretreatment method used during blowing in of blast furnace |
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Patent Citations (4)
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| CN201190165Y (en) * | 2008-04-30 | 2009-02-04 | 山东泰山钢铁集团有限公司 | Taphole of blowing-on of blast furnace with wind pressure tube |
| CN202157080U (en) * | 2011-07-12 | 2012-03-07 | 武汉钢铁(集团)公司 | Wind leading device for blow-in |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109468422A (en) * | 2018-12-15 | 2019-03-15 | 江苏盛耐新材料有限公司 | A kind of blast furnace entirety tapping hole brick |
| 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 |
| CN111705176A (en) * | 2020-05-21 | 2020-09-25 | 南京钢铁股份有限公司 | Method for discharging slag iron by using oxygen lance during blow-in of blast furnace and oxygen lance thereof |
| CN111705176B (en) * | 2020-05-21 | 2022-03-22 | 南京钢铁股份有限公司 | Method for discharging slag iron by using oxygen lance during blow-in of blast furnace and oxygen lance thereof |
| CN111607674A (en) * | 2020-06-29 | 2020-09-01 | 盐城市联鑫钢铁有限公司 | Method and device for promoting rapid temperature rise of blast furnace hearth |
| CN112575135A (en) * | 2020-12-25 | 2021-03-30 | 北京金泰烁昌科技有限公司 | Blast furnace taphole dredging and blockage removing equipment and using method thereof |
| CN114908206A (en) * | 2022-06-08 | 2022-08-16 | 广东韶钢松山股份有限公司 | Blast furnace opening iron notch device and operation method |
| CN114908206B (en) * | 2022-06-08 | 2024-01-05 | 广东韶钢松山股份有限公司 | Blast furnace tapping device and operation method |
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Application publication date: 20160810 |
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