CN110819750B - Blast furnace and plugging device for blast furnace shell and cooling wall - Google Patents
Blast furnace and plugging device for blast furnace shell and cooling wall Download PDFInfo
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- CN110819750B CN110819750B CN201911122519.6A CN201911122519A CN110819750B CN 110819750 B CN110819750 B CN 110819750B CN 201911122519 A CN201911122519 A CN 201911122519A CN 110819750 B CN110819750 B CN 110819750B
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- furnace shell
- sealing
- blast furnace
- cooling wall
- plugging device
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B7/00—Blast furnaces
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B7/00—Blast furnaces
- C21B7/10—Cooling; Devices therefor
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- 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)
Abstract
The invention discloses a plugging device for a blast furnace shell and a cooling wall, which comprises a sealing component arranged between adjacent cooling walls, wherein the sealing component penetrates through the cooling wall along the radial direction to be abutted against the furnace shell so as to plug a gas passage. By applying the plugging device for the blast furnace shell and the cooling wall, disclosed by the invention, the sealing component is arranged between the adjacent cooling walls, and the sealing component penetrates from the cooling wall to be abutted against the furnace shell along the radial direction, so that sealing is formed between the furnace shell and the cooling wall, the gas is prevented from leaking between the adjacent cooling walls, and a gas leakage channel in the furnace is plugged. The invention also discloses a blast furnace with the technical effects.
Description
Technical Field
The invention relates to the field of metallurgical equipment, in particular to a plugging device for a blast furnace shell and a cooling wall, and further relates to a blast furnace.
Background
The body of the blast furnace is constructed by a steel shell and an internal refractory material masonry, the blast furnace is a sealed body bearing high pressure in the production process, so that the body is required to have high sealing performance, and the refractory material is often corroded, peeled, abnormally contracted and the like in the production process of the blast furnace due to the influence of the reasons of construction, materials, operation, water leakage and the like, so that the sealing performance of the furnace body is poor, the accidents of abnormal fluctuation of air flow in the furnace, furnace skin redness, burning-through, gas leakage and the like are caused, even the furnace service is shortened, the overhaul is advanced, and the safety production of the blast furnace is seriously threatened.
The common treatment adopts a method of grouting from the opening of the furnace shell, so that the grouting material enters the gas channel to achieve the plugging effect. The channels formed by the coal gas are irregularly distributed and are small, so that the positioning of the leakage pore channels is very difficult, and new leakage pore channels can be formed after the air flow is changed after part of the leakage pore channels are sealed and filled, and although the leakage channel cannot be completely sealed through repeated treatment, the hidden danger cannot be fundamentally eliminated.
Disclosure of Invention
In view of the above, the present invention provides a plugging device for a furnace shell and a cooling wall of a blast furnace, so as to solve the problems that a leakage hole is easy to occur and the furnace shell cannot be completely sealed when being plugged. The invention also provides a blast furnace comprising the blast furnace shell and the blocking device for the cooling wall.
In order to achieve the purpose, the invention provides the following technical scheme:
a blast furnace comprises a furnace shell and cooling walls which are sequentially arranged from outside to inside along the radial direction, wherein the cooling walls are horizontally arranged along the inner surface of the furnace shell, a sealing component is arranged between every two adjacent cooling walls, and the sealing component penetrates through the cooling walls along the radial direction to be abutted against the furnace shell so as to seal a gas channel.
Preferably, the sealing assembly comprises a group of oppositely arranged sealing plates with a preset distance, and a filling layer for plugging a cavity formed by the sealing plates is arranged between the sealing plates.
Preferably, the filling layer specifically comprises a micro-expansion grouting material layer and an iron scrap layer which are sequentially arranged from outside to inside along one side close to the furnace shell.
Preferably, the sealing plate is a sealing steel plate, and the thickness of the sealing steel plate is between 3 and 8 mm.
Preferably, the sealing assembly is circumferentially arranged along the circumference of the furnace shell to form a closed sealing band.
Preferably, the sealing plate is an annular sealing plate, and a circumferential edge of the annular sealing plate is abutted to an inner surface of the furnace shell.
Preferably, the furnace further comprises refractory brickwork arranged on one side of the cooling wall far away from the furnace shell.
The invention provides a plugging device for a blast furnace shell and a cooling wall, which comprises a sealing component arranged between adjacent cooling walls, wherein the sealing component penetrates through the cooling wall along the radial direction to be abutted against the furnace shell so as to plug a gas passage.
By applying the plugging device for the blast furnace shell and the cooling wall, which is provided by the invention, the sealing component is arranged between the adjacent cooling walls and penetrates from the cooling wall to be abutted against the furnace shell along the radial direction, so that sealing is formed between the furnace shell and the cooling wall, gas is prevented from leaking between the adjacent cooling walls, and a gas leakage channel in the furnace is plugged.
In order to achieve the second object, the present invention provides a blast furnace, which comprises any one of the above plugging devices for a furnace shell and a cooling wall, wherein the plugging device for a furnace shell and a cooling wall has the above technical effects, and a blast furnace having the plugging device for a furnace shell and a cooling wall also has corresponding technical effects.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic view of a partial installation structure of a plugging device for a furnace shell and a cooling wall of a blast furnace according to an embodiment of the present invention;
fig. 2 is a schematic top view of a sealing plate according to an embodiment of the present invention.
The drawings are numbered as follows:
the cooling wall 1, the furnace shell 2, the micro-expansion grouting material layer 3 and the sealing plate 4.
Detailed Description
The embodiment of the invention discloses a plugging device for a blast furnace shell and a cooling wall, which aims to solve the problems that leakage holes are easy to appear and complete sealing cannot be realized when the furnace shell is plugged.
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-2, fig. 1 is a schematic view of a partial installation structure of a plugging device for a furnace shell and a cooling wall of a blast furnace according to an embodiment of the present invention; fig. 2 is a schematic top view of a sealing plate according to an embodiment of the present invention.
In a specific embodiment, the blocking device for the blast furnace shell and the cooling wall provided by the invention comprises a sealing component arranged between adjacent cooling walls 1, wherein the sealing component penetrates from the cooling wall 1 to be pressed against the furnace shell 2 along the radial direction so as to block a gas passage.
The cooling wall 1 is tiled on the inner surface of the furnace shell 2, the structure of the cooling wall 1 and the furnace shell 2 can refer to the prior art, and a sealing component is arranged between the adjacent cooling walls 1 and can be made of specific plates, such as steel plates. The sealing component extends from the inner end wall of the cooling wall 1 to abut against the inner surface of the furnace shell 2, thereby blocking and blocking the gas leakage passage between the adjacent cooling walls 1. Wherein, sealing component's upper/lower surface sets up with the laminating of the upper/lower surface of stave 1, sealing component's lateral wall offsets with stove outer covering 2, can understand that, sealing component cooperatees with the internal surface shape of stove outer covering 2 with the side edge shape that stove outer covering 2 offseted to realize sealed, if when the stove outer covering 2 sets up to the cylinder, sealing component's edge sets up to the arc structure, in other embodiments, can set up as required, as long as can realize sealing component and stove outer covering 2's cooperation can.
In one embodiment, sealing elements are provided between all adjacent cooling walls 1, respectively, in order to ensure the sealing effect of the gas leakage path inside the furnace shell 2, or in one embodiment, only between the cooling walls 1 at the leakage. Therefore, the number of the sealing assemblies can be set to be multiple, and the number of the sealing assemblies can be set as required in practical application.
By applying the plugging device for the blast furnace shell and the cooling wall, which is provided by the invention, the sealing component is arranged between the adjacent cooling walls 1 and penetrates from the cooling wall 1 to be abutted against the furnace shell along the radial direction, so that sealing is formed between the furnace shell 2 and the cooling wall 1, gas is prevented from leaking between the adjacent cooling walls 1, and a gas leakage channel in the furnace is plugged.
Specifically, seal assembly includes a set of relative setting and is equipped with the closing plate 4 of predetermineeing the distance, is equipped with the filling layer that is used for carrying out the shutoff to the cavity that the two formed between closing plate 4. Two closing plates 4 set up respectively between adjacent stave 1, and respectively with the diapire and the roof laminating setting of stave 1, the distance between two closing plates 4 can set up as required, and the filling layer can specifically set up through grout material or other sealing materials, and its specific material selection sets up according to prior art's development level. Wherein, the filling layer can be set up to same kind sealing material or multiple different materials, simultaneously, the filling layer is from the length direction of sealing plate 4 to the setting of stove outer covering 2 inner wall.
Further, the filling layer specifically comprises a micro-expansion grouting material layer 3 and an iron scrap layer which are sequentially arranged along one side close to the furnace shell 2. The setting of the grout bed of expanding a little is in the one side that is close to stove outer covering 2, when setting up, is in milk through the grout material of expanding a little, fills the clearance between two closing plates 4, during the grout, tamps the grout material closely knit with the ramming stick, makes it and stove outer covering 2 and closing plate 4 gaplessly within a definite time to set up the thickness of grout bed of expanding a little 3 as required, and carry out 1 interval gap rusty knots of stave through iron fillings, accomplish the construction. Meanwhile, the sealing plate 4 is a sealing steel plate, and the thickness of the sealing steel plate is between 3 and 8mm, preferably 4 mm.
On the basis of the above-described embodiments, the sealing assembly is arranged circumferentially around the furnace shell 2 to form a closed sealing band. From this setting to improve sealed effect, seal assembly encircles the setting from the circumference of stove outer covering 2 along the horizontal direction, and the effective shutoff of closed seal area stove base gas leakage passageway reaches the purpose of administering stove base gas leakage. Further, the furnace body is an annular furnace body, the sealing plate 4 is specifically an annular sealing plate 4, and the circumferential edge of the annular sealing plate 4 is abutted to the inner surface of the furnace shell 2.
In one embodiment, it further comprises a brickwork of refractory material arranged on the side of the stave 1 remote from the furnace shell 2. When in use, the specific operations are as follows: determining the outer diameter and the width of an annular sealing plate 4 according to the inner diameter size of a blast furnace shell 2 and the gap distance between a cooling wall 1 and the furnace shell 2, manufacturing by using a steel plate, and determining the number of segmented segments according to the actual condition of the blast furnace; according to the drawing of the furnace shell 2 at the position to be sealed, steel plates are segmented into annular patterns; after the refractory material of the hearth is removed and before the refractory material is built, cleaning up the pressure slurry between the cooling wall 1 and the furnace shell 2 to form an annular space; inserting a sealing plate 4 between the cooling walls 1, connecting the sealing plate with the cooling walls 1 and simultaneously propping against the furnace shell 2; and then grouting by using micro-expansion grouting materials to fill the gap between the sealing plates 4, tamping the grouting materials to be compact by using a tamping rod during grouting so that the grouting materials have no gap between the grouting materials and the furnace shell 2 and the sealing plates 4, and finally carrying out gap rusty concreting between the cooling walls 1 by using iron scrap fillers to finish the whole construction process.
Based on the above embodiments, the present invention further provides a blast furnace, including the plugging device for a furnace shell and a cooling wall of the blast furnace described in any of the above embodiments, and as the plugging device for a furnace shell and a cooling wall of the blast furnace in the above embodiments has the above technical effects, the beneficial effects of the blast furnace refer to the above embodiments.
Finally, it should also be noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (5)
1. A plugging device for a blast furnace shell and a cooling wall is characterized by comprising a sealing component arranged between adjacent cooling walls, wherein the sealing component penetrates through the cooling wall along the radial direction to be abutted against the furnace shell so as to plug a gas passage;
the sealing assembly comprises a group of sealing plates which are oppositely arranged and provided with preset distances and are respectively attached to the bottom wall and the top wall of the cooling wall, a filling layer used for plugging the cavity formed by the sealing plates is arranged between the sealing plates, and the filling layer specifically comprises a micro-expansion grouting material layer and an iron scrap layer which are sequentially arranged along one side close to the furnace shell.
2. The plugging device for the blast furnace shell and the cooling stave according to claim 1, wherein the sealing plate is a sealing steel plate having a thickness of 3 to 8 mm.
3. The furnace shell and stave plugging device of any one of claims 1 or 2 wherein said seal assembly is circumferentially disposed about the furnace shell to form a closed sealing band.
4. The plugging device for a blast furnace shell and a stave according to claim 3, characterized in that said sealing plate is embodied as an annular sealing plate, a circumferential edge of which is disposed against an inner surface of the furnace shell.
5. A blast furnace comprising a furnace shell, a stave and brickwork of refractory material arranged in this order from the outside to the inside in the radial direction, characterized in that it further comprises a plugging device for a furnace shell and a stave according to any one of claims 1 to 4.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911122519.6A CN110819750B (en) | 2019-11-15 | 2019-11-15 | Blast furnace and plugging device for blast furnace shell and cooling wall |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911122519.6A CN110819750B (en) | 2019-11-15 | 2019-11-15 | Blast furnace and plugging device for blast furnace shell and cooling wall |
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| Publication Number | Publication Date |
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| CN110819750A CN110819750A (en) | 2020-02-21 |
| CN110819750B true CN110819750B (en) | 2021-08-06 |
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| CN201911122519.6A Active CN110819750B (en) | 2019-11-15 | 2019-11-15 | Blast furnace and plugging device for blast furnace shell and cooling wall |
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| CN111500809A (en) * | 2020-04-03 | 2020-08-07 | 广东韶钢松山股份有限公司 | Cooling wall plugging process and plugging slurry |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008121079A (en) * | 2006-11-14 | 2008-05-29 | Jfe Steel Kk | Method for constructing furnace wall in blast furnace |
| CN105368998A (en) * | 2014-08-27 | 2016-03-02 | 宝山钢铁股份有限公司 | Ramming clamp and method for cooling wall expansion gap |
| CN206467259U (en) * | 2016-12-02 | 2017-09-05 | 武汉钢铁有限公司 | A kind of blast-furnace bosh cupola well junction cooling wall protection structure |
| 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 |
| CN207498403U (en) * | 2017-12-05 | 2018-06-15 | 三门峡阳光铸材有限公司 | A kind of inner lining structure of fire-proof |
| CN207581842U (en) * | 2017-12-04 | 2018-07-06 | 中冶赛迪工程技术股份有限公司 | A kind of bottom hearth of blast furnace structure |
-
2019
- 2019-11-15 CN CN201911122519.6A patent/CN110819750B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008121079A (en) * | 2006-11-14 | 2008-05-29 | Jfe Steel Kk | Method for constructing furnace wall in blast furnace |
| CN105368998A (en) * | 2014-08-27 | 2016-03-02 | 宝山钢铁股份有限公司 | Ramming clamp and method for cooling wall expansion gap |
| CN206467259U (en) * | 2016-12-02 | 2017-09-05 | 武汉钢铁有限公司 | A kind of blast-furnace bosh cupola well junction cooling wall protection structure |
| 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 |
| CN207581842U (en) * | 2017-12-04 | 2018-07-06 | 中冶赛迪工程技术股份有限公司 | A kind of bottom hearth of blast furnace structure |
| CN207498403U (en) * | 2017-12-05 | 2018-06-15 | 三门峡阳光铸材有限公司 | A kind of inner lining structure of fire-proof |
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| CN110819750A (en) | 2020-02-21 |
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