CN115820959B - Brick embedding construction method for cooling wall in blast furnace - Google Patents
Brick embedding construction method for cooling wall in blast furnace Download PDFInfo
- Publication number
- CN115820959B CN115820959B CN202211589754.6A CN202211589754A CN115820959B CN 115820959 B CN115820959 B CN 115820959B CN 202211589754 A CN202211589754 A CN 202211589754A CN 115820959 B CN115820959 B CN 115820959B
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- Prior art keywords
- cooling wall
- bricks
- brick
- furnace
- cooling
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- 238000001816 cooling Methods 0.000 title claims abstract description 137
- 239000011449 brick Substances 0.000 title claims abstract description 111
- 238000010276 construction Methods 0.000 title claims abstract description 23
- 239000000945 filler Substances 0.000 claims abstract description 12
- 238000004519 manufacturing process Methods 0.000 claims abstract description 7
- 229910001018 Cast iron Inorganic materials 0.000 claims description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 229910001208 Crucible steel Inorganic materials 0.000 claims description 3
- 229910052581 Si3N4 Inorganic materials 0.000 claims description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 3
- 230000001174 ascending effect Effects 0.000 claims description 3
- 239000004927 clay Substances 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 3
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 3
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims description 3
- RQMIWLMVTCKXAQ-UHFFFAOYSA-N [AlH3].[C] Chemical compound [AlH3].[C] RQMIWLMVTCKXAQ-UHFFFAOYSA-N 0.000 claims description 2
- 238000009434 installation Methods 0.000 abstract description 11
- 230000000694 effects Effects 0.000 abstract description 8
- 238000007596 consolidation process Methods 0.000 abstract description 4
- 239000000463 material Substances 0.000 abstract description 3
- 238000010008 shearing Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 2
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical compound [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003034 coal gas Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Landscapes
- Blast Furnaces (AREA)
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
Abstract
The invention provides a brick embedding construction method for a cooling wall in a blast furnace, which comprises the following steps: 1) Designing and manufacturing a cooling wall with an embedded groove, wherein the width H of an opening of the embedded groove facing the inner hot surface of the furnace is larger than the width H of the root of the embedded groove; 2) Designing and manufacturing tiles matched with the cooling wall, wherein the sum total length L of the width of each row of tiles on the cooling wall is not smaller than the chord length L of the cooling wall; 3) Installing and fixing the cooling wall and the furnace shell, and installing the cooling wall and the bricks; laying bricks on the cooling wall in turn from bottom to top, and reserving a brick on two sides of each row without laying bricks; 4) Filling a gap between adjacent cooling walls with a first filler; 5) Brick inlaying gaps reserved on two sides of each row of cooling walls are built in place; 6) And filling a gap between adjacent bricks with a second filler. According to the invention, through the optimized design of the cooling wall and the brick-inlaid structure, the limitation of the overall installation outline dimensions of the cooling wall and the brick-inlaid structure is avoided, the gaps between the cooling walls and the gaps between the bricks are reduced, and the construction and consolidation effects of filling materials between the gaps are ensured.
Description
Technical Field
The invention belongs to the technical field of metallurgy, and particularly relates to a brick embedding construction method for a cooling wall in a blast furnace.
Background
The cooling wall is an important cooling device of the blast furnace, and the main stream technical proposal is required to be designed into a structural form with dovetail grooves so as to be convenient for embedding refractory bricks. The refractory brick is an important protective medium for the cooling wall, can isolate the cooling wall from high-temperature high-speed airflow and furnace burden in the furnace, and prevents the cooling wall from being worn by being directly exposed to a high-temperature environment. The refractory bricks are fixed on the cooling wall through a dovetail structure, as shown in fig. 1, the fixed structure form of the refractory bricks and the cooling wall can not be embedded perpendicular to the groove surface of the cooling wall, and can only be pushed in from the side surface of the cooling wall along the clamping groove, so that the cooling wall can only be embedded with bricks outside the furnace, and then the cooling wall and the embedded bricks are integrally hoisted. Meanwhile, the cooling walls are fixed on the cylindrical or conical furnace shell block by block from the inside of the furnace shell through water pipes or bolts, so that the cooling wall chord length is required to be smaller than the hot surface chord length to realize installation, gaps between the cooling walls and gaps between the bricks after installation are wide and deep, as shown in fig. 2 and 3, the existing installation mode of the cooling walls and the bricks affects the construction effect and the consolidation effect of gap fillers, the fillers are easily blown away by high-speed air flow after furnace opening, and high-temperature coal gas leaks to the cooling wall cold surface in a serial manner, so that the furnace shell reds to affect the safety production of the blast furnace.
Disclosure of Invention
The invention aims to provide a blast furnace cooling wall brick-inlaid construction method which at least can solve part of defects in the prior art.
In order to achieve the above purpose, the invention adopts the following technical scheme:
a blast furnace cooling wall brick embedding construction method comprises the following steps:
1) Designing and manufacturing a cooling wall with embedded grooves, wherein the width H of an opening of the embedded groove surface of the cooling wall facing the inner hot surface of the furnace is larger than the width H of the root part of the embedded groove;
2) Designing and manufacturing a brick which is matched with the cooling wall in the step 1), wherein the brick has a joggle joint part which is joggled with the joggle groove, and after the subsequent brick is designed and installed on the cooling wall, the sum total length L of the width sum of the bricks in each row on the cooling wall is not smaller than the chord length L of the cooling wall;
3) Installing and fixing the cooling wall and the furnace shell, and installing the cooling wall and the bricks; when the bricks are installed and fixed on the cooling wall, each row of bricks are built on the cooling wall from bottom to top in sequence, and one brick is reserved at two sides of each row and not built;
4) Filling a gap between adjacent cooling walls in the furnace with a first filler;
5) Brick inlaying gaps reserved on two sides of each row of cooling walls are built in place;
6) And filling a gap between adjacent tiles with a second filler.
Further, the central line of the embedded groove is obliquely arranged, the included angle between the central line of the embedded groove and the ascending direction line of the airflow in the furnace is smaller than 90 degrees, and the included angle between the central line of the embedded groove and the descending direction line of the furnace burden in the furnace is larger than 90 degrees.
Further, the section shape of the joggle joint part of the inlaid brick is the same as the section shape of the inlaid groove of the cooling wall.
Further, the cross section of the embedded groove is trapezoid, and the narrower end of the trapezoid is the root of the embedded groove.
Further, the plurality of embedded grooves on each cooling wall are arranged at equal intervals along the height direction of the cooling wall, and each embedded groove extends along the circumferential direction of the cooling wall.
In step 3), the embedded bricks are built outside the furnace and fixed on the cooling wall, and then the built cooling wall is integrally lifted and installed on a furnace shell in the furnace.
Further, in the step 3), the cooling wall is firstly installed and fixed on the furnace shell in the furnace, and then the inlaid bricks are built on the cooling wall from bottom to top.
Further, the cooling wall is a cast iron cooling wall, a cast steel cooling wall or a copper cooling wall.
Further, the inlaid bricks are clay bricks, high-alumina bricks, aluminum carbon bricks or silicon nitride combined silicon carbide bricks.
Compared with the prior art, the invention has the beneficial effects that:
(1) According to the method for constructing the bricks on the cooling wall in the blast furnace, the cooling wall and the structures of the bricks are optimally designed, so that the bricks can be embedded and installed vertically to the groove surface of the cooling wall, the sum of the widths of the bricks in each row on the cooling wall and the total length of the bricks in each row are not smaller than the chord length of the cooling wall when the bricks are installed, the limitation of the overall installation outline dimensions of the cooling wall and the bricks can be avoided, gaps between the cooling walls and the gaps between the bricks can be reduced, and the construction effect and the consolidation effect of filling materials between the gaps are ensured.
(2) According to the method for constructing the embedded bricks of the cooling wall in the blast furnace, the sectional dimension of the embedded groove facing the inner hot surface of the cooling wall in the furnace is larger than the sectional dimension of the root part of the embedded groove, and the root dimension of the joggle joint part of the embedded brick matched with the embedded groove is larger than the top dimension of the joggle joint part, so that the shearing stress of the interface between the embedded bricks and the joggle joint part is reduced, the shearing capacity of the embedded bricks of the cooling wall is improved, the cooling wall is protected, the cooling wall is prevented from being directly worn, and the service life of the cooling wall is prolonged.
The present invention will be described in further detail with reference to the accompanying drawings.
Drawings
FIG. 1 is a schematic view of a prior art stave and brick insert;
FIG. 2 is a schematic view of a prior art single stave and brick set construction;
FIG. 3 is a schematic view of a prior art stave and tile installation;
FIG. 4 is a schematic view of the structure of the stave and the brick of the present invention;
FIG. 5 is an enlarged view of a portion of the stave and brick construction of the present invention;
FIG. 6 is a schematic view of a single stave of the present invention after construction with bricks thereon;
FIG. 7 is a schematic view of the stave of the present invention after installation of the tiles.
Reference numerals illustrate: 1. brick inlaying; 2. a cooling wall; 3. a furnace shell; 4. a first filler; 5. a second filler; 6. embedding grooves; 7. a center line of the inlaid groove; 8. and a joggle joint.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present invention and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or by an abutting connection or integrally connected; the specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
The terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second" may include one or more such features, either explicitly or implicitly; in the description of the present invention, unless otherwise indicated, the meaning of "a plurality", "a number" or "a plurality" is two or more.
The embodiment provides a brick embedding construction method for a cooling wall in a blast furnace, which comprises the following steps:
(1) The stave 2 with the damascene groove 6 is designed and fabricated such that the width H of the damascene groove 6 facing the hot surface in the furnace of the stave 2 is larger than the root width H of the damascene groove 6 as shown in fig. 4 and 5.
In particular, the stave 2 may be, but is not limited to, a cast iron stave, a cast steel stave, or a copper stave; the plurality of the embedded grooves 6 on each stave 2 are arranged at equal intervals in the height direction of the stave 2, and the embedded grooves 6 extend in the circumferential direction of the stave 2.
Optionally, the sectional shape of the inlaid groove is designed to be trapezoid, and the narrower end of the trapezoid is the root of the inlaid groove.
(2) The tile 1 matched with the cooling wall 2 in the step (1) is designed and manufactured, as shown in fig. 4,5 and 6, the tile 1 is provided with a joggle part 8 joggled with the joggle groove 6, and after the subsequent tile 1 is designed to be installed on the cooling wall 2, the sum total length L of the width of the tiles 1 in each row on the cooling wall 2 is not smaller than the chord length L of the cooling wall 2.
In particular, the tile 1 may be, but is not limited to, a clay brick, a high alumina brick, an alumina carbon brick, or a silicon nitride bonded silicon carbide brick. In this embodiment, the joggle portion 8 of the tile 1 is joggled for matching with the insert groove 6, the cross section shape of the joggle portion 8 is designed to be the same as the cross section shape of the insert groove 6 of the cooling wall 2, that is, the root size of the joggle portion 8 is larger than the top size of the joggle portion 8, so that the shearing stress of the interface between the tile 1 and the joggle portion 8 is reduced, the shearing capacity of the tile embedded by the cooling wall is improved, the effects of protecting the cooling wall 1 and avoiding the cooling wall 1 from being directly worn are achieved, and the service life of the cooling wall 1 is prolonged.
Further preferably, as shown in fig. 4, the inlaid trough center line 7 of the inlaid trough 6 is obliquely arranged, the included angle between the inlaid trough center line 7 and the ascending direction line of the furnace air flow is smaller than 90 degrees, and meanwhile, the included angle between the inlaid trough center line 7 and the descending direction line of the furnace burden is larger than 90 degrees.
(3) The cooling wall 2 and the furnace shell 3 are fixedly arranged, and the cooling wall 2 and the bricks 1 are inlaid.
Specifically, since the width H of the opening of the inner surface of the inlaid groove 6 of the cooling wall 2 facing the furnace is larger than the width H of the root of the inlaid groove, when the inlaid groove 6 is internally provided with the inlaid brick 1, the inlaid brick 1 can be inlaid and installed perpendicular to the groove surface of the inlaid groove 6 of the cooling wall 2 without being pushed in from the side surface of the cooling wall 2 along the inlaid groove 6, so that the space required for installing the inlaid brick 1 is small, and therefore, in the embodiment, when the cooling wall 2 and the inlaid brick 1 are installed, the inlaid brick 1 can be selected to be built outside the furnace to be fixed on the cooling wall 2, and then the built cooling wall 2 is integrally lifted and installed on the furnace shell 3 in the furnace; the cooling wall 2 can be installed and fixed on the furnace shell 3 in the furnace, then the brick 1 is built on the cooling wall 2 from bottom to top, the concrete installation mode can be selected according to the actual requirement of construction, and compared with the installation mode that the existing brick 1 can only be embedded on the cooling wall 2 outside the furnace and then integrally hoisted, the embodiment can avoid the limitation of the overall installation dimension of the cooling wall 2 and the brick 1.
In addition, when the bricks 1 are installed and fixed on the cooling wall 2, each row of bricks 1 is built on the cooling wall 2 from bottom to top in sequence, and one brick 1 is reserved at two sides of each row and not built.
(4) As shown in fig. 7, the gap between adjacent staves 2 in the furnace is filled with a filler one 4. In this embodiment, since the mosaic tile 1 can be mounted in a manner of being vertically inlaid in the groove 6 of the cooling wall 2, a space for pushing and mounting the mosaic tile 1 from the side of the cooling wall 2 is not required to be reserved between adjacent cooling walls 2, and compared with the prior art, the gap between adjacent cooling walls 2 can be reduced, and the subsequent mosaic tile 1 can be vertically inlaid in the corresponding mosaic groove 6.
(5) Brick inserts 1 are built in place at brick insert vacancies reserved on two sides of each row of the cooling wall 2. In the embodiment, the width H of the opening of the inner heat surface of the cooling wall 2 facing the furnace is larger than the width H of the root of the cooling wall 6, so that the bricks 1 can be smoothly laid and filled with brick inserting vacancies; meanwhile, the sum total length L of the widths of the bricks 1 in each row on the cooling wall 2 is not smaller than the chord length L of the cooling wall 2, so that gaps among the bricks 1 are greatly reduced.
(6) And filling a gap between adjacent tiles 1 with a second filler 5.
According to the method for constructing the bricks on the cooling wall in the blast furnace, the cooling wall and the structures of the bricks are optimally designed, so that the bricks can be embedded and installed vertically to the groove surface of the cooling wall, the sum of the widths of the bricks in each row on the cooling wall and the total length of the bricks in each row are not smaller than the chord length of the cooling wall when the bricks are installed, the limitation of the overall installation outline dimensions of the cooling wall and the bricks can be avoided, gaps between the cooling walls and the gaps between the bricks can be reduced, and the construction effect and the consolidation effect of filling materials between the gaps are ensured.
The foregoing examples are merely illustrative of the present invention and are not intended to limit the scope of the present invention, and all designs that are the same or similar to the present invention are within the scope of the present invention.
Claims (8)
1. The construction method for the cooling wall inlaid bricks in the blast furnace is characterized by comprising the following steps of:
1) Designing and manufacturing a cooling wall with embedded grooves, wherein the width H of an opening of the embedded groove surface of the cooling wall facing the inner hot surface of the furnace is larger than the width H of the root part of the embedded groove; the central line of the embedded groove is obliquely arranged, the included angle between the central line of the embedded groove and the ascending direction line of the airflow in the furnace is smaller than 90 degrees, and the included angle between the central line of the embedded groove and the descending direction line of the furnace burden in the furnace is larger than 90 degrees;
2) Designing and manufacturing a brick which is matched with the cooling wall in the step 1), wherein the brick has a joggle joint part which is joggled with the joggle groove, and after the subsequent brick is designed and installed on the cooling wall, the sum total length L of the width sum of the bricks in each row on the cooling wall is not smaller than the chord length L of the cooling wall;
3) Installing and fixing the cooling wall and the furnace shell, and installing the cooling wall and the bricks; when the bricks are installed and fixed on the cooling wall, each row of bricks are built on the cooling wall from bottom to top in sequence, and one brick is reserved at two sides of each row and not built;
4) Filling a gap between adjacent cooling walls in the furnace with a first filler;
5) Brick inlaying gaps reserved on two sides of each row of cooling walls are built in place;
6) And filling a gap between adjacent tiles with a second filler.
2. The blast furnace stave brick lining construction method according to claim 1, characterized in that: the sectional shape of the joggle joint part of the inlaid brick is the same as the sectional shape of the inlaid groove of the cooling wall.
3. The blast furnace stave brick lining construction method according to claim 1, characterized in that: the cross section of the embedded groove is trapezoid, and the narrower end of the trapezoid is the root of the embedded groove.
4. The blast furnace stave brick lining construction method according to claim 1, characterized in that: the embedded grooves on each cooling wall are arranged at equal intervals along the height direction of the cooling wall, and each embedded groove extends along the circumferential direction of the cooling wall.
5. The blast furnace stave brick lining construction method according to claim 1, characterized in that: in the step 3), the bricks are built outside the furnace and fixed on the cooling wall, and then the built cooling wall is integrally lifted and installed on a furnace shell in the furnace.
6. The blast furnace stave brick lining construction method according to claim 1, characterized in that: in the step 3), the cooling wall is firstly installed and fixed on the furnace shell in the furnace, and then the inlaid bricks are built on the cooling wall from bottom to top.
7. The blast furnace stave brick lining construction method according to claim 1, characterized in that: the cooling wall is cast iron cooling wall, cast steel cooling wall or copper cooling wall.
8. The blast furnace stave brick lining construction method according to claim 1, characterized in that: the inlaid bricks are clay bricks, high-alumina bricks, aluminum carbon bricks or silicon nitride combined silicon carbide bricks.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211589754.6A CN115820959B (en) | 2022-12-12 | 2022-12-12 | Brick embedding construction method for cooling wall in blast furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211589754.6A CN115820959B (en) | 2022-12-12 | 2022-12-12 | Brick embedding construction method for cooling wall in blast furnace |
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| Publication Number | Publication Date |
|---|---|
| CN115820959A CN115820959A (en) | 2023-03-21 |
| CN115820959B true CN115820959B (en) | 2024-05-24 |
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| CN202214370U (en) * | 2011-08-26 | 2012-05-09 | 汕头华兴冶金设备股份有限公司 | Copper cooling stave with embedded steel brick |
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| CN115820959A (en) | 2023-03-21 |
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