CN110527766B - Integral repairing and pouring method for tuyere belt of blast furnace - Google Patents
Integral repairing and pouring method for tuyere belt of blast furnace Download PDFInfo
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- CN110527766B CN110527766B CN201910774508.XA CN201910774508A CN110527766B CN 110527766 B CN110527766 B CN 110527766B CN 201910774508 A CN201910774508 A CN 201910774508A CN 110527766 B CN110527766 B CN 110527766B
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B7/00—Blast furnaces
- C21B7/16—Tuyéres
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Abstract
The invention relates to a blast furnace tuyere zone integral repairing and pouring method, and belongs to the technical field of blast furnace maintenance. The method comprises the following steps of 1), preparing a plurality of steel plates as templates, setting tension points at two upper and lower supporting tension positions in the middle of the steel plates, and pressing the middle of the steel plates into an arc shape; 2) pulling the steel plate out of the furnace from the tuyere by using a chain block, and erecting a support beam at the middle position of each tuyere outside the furnace, wherein the outer end of the chain block is fixed on the support beam to tighten the steel plate; 3) after each steel plate is installed in place, the steel plates are formed by butt joint, then the adjacent steel plates are firmly welded, and an internal annular plate is formed on the inner wall of the furnace; 4) and pouring a refractory material between the inner annular belt formwork and the inner wall of the furnace. The method can be implemented quickly, a large amount of manpower and material resources can be saved for construction, the disassembly and the assembly are convenient, and the overall cost is greatly reduced.
Description
Technical Field
The invention relates to a blast furnace tuyere zone integral repairing and pouring method, and belongs to the technical field of blast furnace maintenance.
Background
In the production process of a blast furnace, the tuyere zone is influenced by factors such as furnace internal thermal stress, unreasonable brick lining structure, poor material quality, frequent stopping and opening of the furnace and the like, the brick lining is damaged to a great extent, the defects of the hot-zone furnace type can be caused after the brick lining is damaged, the reasonable performance of an air supply system and slag crust formation is poor, the gas leakage of the tuyere is serious, the tuyere sleeve is frequently damaged and the like, the regional repair and restoration are required after the furnace is stopped, and the tuyere zone is cleaned and integrally poured after the furnace is stopped by adopting a simple and practical process method at present.
Traditional tuyere zone is when technology is pour, can carry out the measurement earlier, build scaffold frame to tuyere zone from the stove bottom, build the platform, be the cyclic annular pendulum row with the box board according to interval and height on the platform, and fix with the buckle, then be the symmetry type with scaffold frame steel tube head and withstand the template, pour after forming the pouring space according to given size, this traditional technology implements the unfavorable factor, first scaffold frame is built from stove bottom large tracts of land, the installation is dismantled and is consumed a large amount of manpower and materials, and it is very long when using, the expense accounting is high. The second box plate is fixed, single-point supporting is not firm, and the casting process is easy to deform and loosen, so that casting slurry leakage is caused, and defects are generated in time and casting quality.
Disclosure of Invention
The invention aims to provide a blast furnace tuyere zone integral repairing and pouring method which is easier to implement.
In order to achieve the purpose, the invention adopts the technical scheme that:
a blast furnace tuyere zone integral repairing and pouring method comprises the following steps,
1) preparing a plurality of steel plates as templates, setting tension points at two upper and lower supporting tension positions in the middle of the steel plates, and pressing the middle of the steel plates into an arc shape;
2) pulling the steel plate by using the chain block, pulling the chain block to the outside of the furnace, erecting a support beam at the middle position of each air port outside the furnace, fixing the outer end of the chain block on the support beam and tensioning the steel plate;
3) after each steel plate is installed in place, the adjacent steel plates are connected in sequence, and then the adjacent steel plates are firmly welded, so that an inner annular plate is formed on the inner wall of the furnace;
4) and pouring a refractory material between the inner annular belt formwork and the inner wall of the furnace.
The technical scheme of the invention is further improved as follows: the thickness of the steel plate used as the template is 3-8 mm.
The technical scheme of the invention is further improved as follows: the blast furnace is provided with a plurality of air ports, the steel plates are arranged corresponding to the air ports, and the number of the steel plates is the same as that of the air ports.
The technical scheme of the invention is further improved as follows: in the step 1, the middle part of the steel plate is heated by gas welding, and then the middle of the steel plate is pressed into an arc shape.
Due to the adoption of the technical scheme, the invention has the following technical effects:
the invention is a brand-new method for integrally repairing and pouring the tuyere zone of the blast furnace, compared with the traditional method, a scaffold is not required to be erected, so that the method can be quickly implemented, the construction efficiency is improved, the furnace shutdown time is shortened, and the enterprise loss can be reduced.
According to the method, the steel plate is tightly pulled and fixed from the tuyere by utilizing the chain block and matching with the support beam, so that the steel plate can be firmly fixed at the tuyere in the blast furnace, and the finally formed inner annular template is stable and reliable. The sealing performance of the internal ring belt template is good, the poured refractory material cannot be leaked, and the maintenance cost is saved.
Drawings
FIG. 1 is a schematic of the present invention;
the tuyere structure comprises a tuyere large sleeve 1, an inner furnace wall 2, an inner furnace wall 3, a chain block 4, a supporting beam 5, a steel plate 6, a tuyere middle sleeve 7 and a filler space.
Detailed Description
The present invention will be described in further detail with reference to specific examples below:
the invention discloses a method for integrally repairing and pouring a tuyere zone of a blast furnace, which is used for maintaining the blast furnace, in particular to pouring a refractory material for the tuyere zone in the blast furnace.
The blast furnace ring is provided with a plurality of air ports, and the air ports comprise an air port large sleeve 1, an air port middle sleeve 6 and an air port small sleeve which are sequentially sleeved from outside to inside. Here, the space above the tuyere in the blast furnace needs to be repaired. The blast furnace tuyere zone integral repairing and pouring method includes the following steps,
1) and preparing a plurality of steel plates as templates, wherein the thickness of the steel plates is 3-8 mm. And then, preprocessing the steel plate, setting tension points at two upper and lower supporting tension positions in the middle of the steel plate, and welding pull rings and the like for applying tension to the steel plate in subsequent construction. Because the steel plate is arranged around in the subsequent construction, the steel plate can be pressed in the middle to form an arc shape according to the requirement. If the steel plates are compared, the middle part of the steel plate is heated by using gas welding, and then the middle of the steel plate is pressed into an arc shape.
2) One end of the chain block 3 is connected with the tension point of the steel plate 5 to pull the steel plate 5, and then the chain block 3 passes through the tuyere medium sleeve 6 and the tuyere large sleeve 1 to be pulled out of the furnace. Meanwhile, a support beam 4 is arranged at the middle position of the outer side of each tuyere large sleeve 1 outside the furnace, the outer end of the chain block 3 is fixed on the support beam 4, and the steel plate 5 is tensioned. At the moment, the furnace is shut down for maintenance in the blast furnace, and firstly, the steel plate 5 is hung from the blast furnace to the height near the tuyere medium sleeve 6; and then, the steel plate 5 penetrates through the tuyere medium sleeve 6 and the tuyere large sleeve 1 in a vertical state and is tensioned by the chain block 3, so that the steel plate 5 is tightly attached to the inner edge of the tuyere medium sleeve 1, the inner edge of the tuyere medium sleeve 6 extends out of the inner furnace wall 2 of the blast furnace, and a filling space 7 is formed between the steel plate 5 and the inner furnace wall 2 of the blast furnace. The steel plate is installed in place, and the steel plate is installed at each air port according to the operation. As shown in particular in figure 1. In practice, two tension points are arranged between the chain block and the steel plate. During the repair process, the tuyere stock has been removed.
3) After each steel plate is installed in place, the adjacent steel plates are connected in sequence, and then the adjacent steel plates are firmly welded, so that an inner annular plate is formed on the inner wall of the furnace; and a complete pouring space is formed between the inner annular belt template and the inner wall of the blast furnace. In order to ensure that the casting space cannot leak materials, some materials for blocking materials can be filled at the junction position of the adjacent steel plates.
4) And pouring a refractory material between the inner annular belt formwork and the inner wall of the furnace.
The blast furnace is provided with a plurality of tuyeres, in the method, steel plates are usually arranged corresponding to the tuyeres, and the number of the steel plates is the same as that of the tuyeres. For example, there are 22 tuyeres, and 22 steel plates are provided.
The method does not need to set up a scaffold and can be quickly implemented. According to the method, the time for erecting the scaffold is usually 2-3 days, the method is easy to implement by using a mode of fixing the steel plate by using a chain block, and the construction of the internal annular template can be completed in only 2-3 hours. The method saves a large amount of manpower and material resources for construction, and is convenient to disassemble and assemble. The inner ring belt template has good tightness, and the poured refractory material cannot be leaked.
Claims (3)
1. The integral repairing and pouring method for the tuyere zone of the blast furnace is characterized by comprising the following steps of: comprises the following steps of (a) carrying out,
1) preparing a plurality of steel plates as templates, setting tension points at two upper and lower supporting tension positions in the middle of the steel plates, and pressing the middle of the steel plates into an arc shape;
2) the steel plate is pulled by using the chain block and pulled out of the furnace, a support beam is arranged at the middle position of each tuyere outside the furnace, the outer end of the chain block is fixed on the support beam to tighten the steel plate, one end of the chain block is connected with a tension point of the steel plate to pull the steel plate, then the chain block penetrates through the tuyere middle sleeve and the tuyere big sleeve and is pulled out of the furnace, meanwhile, the support beam is arranged at the middle position of the outer side of each tuyere big sleeve outside the furnace, the outer end of the chain block is fixed on the support beam to tighten the steel plate, and a filling space is formed between the steel plate and the furnace wall in the blast;
3) after each steel plate is installed in place, the adjacent steel plates are connected in sequence, and then the adjacent steel plates are firmly welded, so that an inner annular plate is formed on the inner wall of the furnace;
4) and pouring a refractory material between the inner annular belt template and the inner wall of the furnace, wherein the blast furnace is provided with a plurality of air ports, the steel plates are arranged corresponding to the air ports, and the number of the steel plates is the same as that of the air ports.
2. The blast furnace tuyere zone integral repairing and pouring method according to claim 1, characterized in that: the thickness of the steel plate used as the template is 3-8 mm.
3. The method for integrally repairing and pouring the tuyere belt of the blast furnace according to any one of claims 1 to 2, wherein: in the step 1, the middle part of the steel plate is heated by gas welding, and then the middle of the steel plate is pressed into an arc shape.
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| CN201910774508.XA CN110527766B (en) | 2019-08-21 | 2019-08-21 | Integral repairing and pouring method for tuyere belt of blast furnace |
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| CN201910774508.XA CN110527766B (en) | 2019-08-21 | 2019-08-21 | Integral repairing and pouring method for tuyere belt of blast furnace |
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| CN112123544B (en) * | 2020-09-19 | 2022-06-14 | 河南华西耐火材料有限公司 | Construction method of integrated full-cast refractory structure applied to blast furnace lining |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07228907A (en) * | 1994-02-18 | 1995-08-29 | Nippon Steel Corp | Method for preventing leakage of water from broken tuyere |
| JP2000319713A (en) * | 1999-05-06 | 2000-11-21 | Sankyu Inc | Method for fitting or removing safety roof for tuyere |
| CN102827980A (en) * | 2012-07-20 | 2012-12-19 | 宣化钢铁集团有限责任公司 | Construction method for casting material in area of blast-furnace tuyere without supporting die |
| CN102851422A (en) * | 2012-07-05 | 2013-01-02 | 河北省首钢迁安钢铁有限责任公司 | Blast furnace tuyere combination firebrick repairing method |
| CN203159645U (en) * | 2013-02-26 | 2013-08-28 | 河北钢铁股份有限公司唐山分公司 | Device for preventing through-flow type air opening of blast furnace from moving outside |
| CN203198043U (en) * | 2012-12-25 | 2013-09-18 | 武钢集团昆明钢铁股份有限公司 | Molding device for abrasion-proof bushing of blast tuyere of blast furnace |
| CN106755681A (en) * | 2017-01-10 | 2017-05-31 | 上海二十冶建设有限公司 | The cooling wall jointing formwork structure and its application method of a kind of detachable recycling |
| CN107299173A (en) * | 2017-07-13 | 2017-10-27 | 上海二十冶建设有限公司 | Segmentation pours the filling method between cooling wall in blast furnace |
| CN206616244U (en) * | 2017-02-12 | 2017-11-07 | 陈茂玉 | A kind of blast furnace air-supply arrangement |
| CN107805679A (en) * | 2017-10-31 | 2018-03-16 | 马鞍山钢铁股份有限公司 | A kind of rapid plugging method after blast-furnace tuyere burn-through |
| CN108893570A (en) * | 2018-09-12 | 2018-11-27 | 北京联合荣大工程材料股份有限公司 | Integrated poured blast furnace crucibe and its casting construction method |
| CN208517448U (en) * | 2018-06-11 | 2019-02-19 | 本钢板材股份有限公司 | A kind of main trough of blast furnace sectional repair mold |
-
2019
- 2019-08-21 CN CN201910774508.XA patent/CN110527766B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07228907A (en) * | 1994-02-18 | 1995-08-29 | Nippon Steel Corp | Method for preventing leakage of water from broken tuyere |
| JP2000319713A (en) * | 1999-05-06 | 2000-11-21 | Sankyu Inc | Method for fitting or removing safety roof for tuyere |
| CN102851422A (en) * | 2012-07-05 | 2013-01-02 | 河北省首钢迁安钢铁有限责任公司 | Blast furnace tuyere combination firebrick repairing method |
| CN102827980A (en) * | 2012-07-20 | 2012-12-19 | 宣化钢铁集团有限责任公司 | Construction method for casting material in area of blast-furnace tuyere without supporting die |
| CN203198043U (en) * | 2012-12-25 | 2013-09-18 | 武钢集团昆明钢铁股份有限公司 | Molding device for abrasion-proof bushing of blast tuyere of blast furnace |
| CN203159645U (en) * | 2013-02-26 | 2013-08-28 | 河北钢铁股份有限公司唐山分公司 | Device for preventing through-flow type air opening of blast furnace from moving outside |
| CN106755681A (en) * | 2017-01-10 | 2017-05-31 | 上海二十冶建设有限公司 | The cooling wall jointing formwork structure and its application method of a kind of detachable recycling |
| CN206616244U (en) * | 2017-02-12 | 2017-11-07 | 陈茂玉 | A kind of blast furnace air-supply arrangement |
| CN107299173A (en) * | 2017-07-13 | 2017-10-27 | 上海二十冶建设有限公司 | Segmentation pours the filling method between cooling wall in blast furnace |
| CN107805679A (en) * | 2017-10-31 | 2018-03-16 | 马鞍山钢铁股份有限公司 | A kind of rapid plugging method after blast-furnace tuyere burn-through |
| CN208517448U (en) * | 2018-06-11 | 2019-02-19 | 本钢板材股份有限公司 | A kind of main trough of blast furnace sectional repair mold |
| CN108893570A (en) * | 2018-09-12 | 2018-11-27 | 北京联合荣大工程材料股份有限公司 | Integrated poured blast furnace crucibe and its casting construction method |
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