CN215713085U - Composite carbon brick for mounting bottom of blast furnace - Google Patents
Composite carbon brick for mounting bottom of blast furnace Download PDFInfo
- Publication number
- CN215713085U CN215713085U CN202120973616.2U CN202120973616U CN215713085U CN 215713085 U CN215713085 U CN 215713085U CN 202120973616 U CN202120973616 U CN 202120973616U CN 215713085 U CN215713085 U CN 215713085U
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- CN
- China
- Prior art keywords
- carbon brick
- brick
- square
- fixed
- blast furnace
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 239000011449 brick Substances 0.000 title claims abstract description 135
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 125
- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 125
- 239000002131 composite material Substances 0.000 title claims abstract description 30
- 210000001503 joint Anatomy 0.000 claims abstract description 3
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims description 8
- 238000009434 installation Methods 0.000 claims description 7
- 239000004570 mortar (masonry) Substances 0.000 claims description 7
- 239000000835 fiber Substances 0.000 claims description 4
- 150000001875 compounds Chemical class 0.000 claims 1
- 238000010276 construction Methods 0.000 abstract description 6
- 238000003723 Smelting Methods 0.000 abstract description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 8
- 229910052742 iron Inorganic materials 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
Images
Landscapes
- Blast Furnaces (AREA)
Abstract
The utility model relates to a composite carbon brick for mounting the bottom of a blast furnace, belonging to the field of blast furnace smelting; providing a composite carbon brick for the bottom of a blast furnace; the technical scheme is as follows: a composite carbon brick for mounting at the bottom of a blast furnace is fixed above a refractory brick layer at the bottom of the blast furnace; the composite carbon brick comprises: square carbon brick and fixed carbon brick, be provided with a plurality of dovetails on the square carbon brick, a plurality of square carbon bricks are laid on the horizontal plane, and the square carbon brick of adjacent square carbon brick mutually supports, the opening of dovetail rather than forming the enclosed construction after corresponding adjacent square carbon brick dovetail opening butt joint, be provided with fixed carbon brick in the enclosed construction, fixed carbon brick appearance suits with the enclosed construction, fixed carbon brick forms two square carbon brick fixed trends mutually that press close to.
Description
Technical Field
The utility model relates to a composite carbon brick for mounting the bottom of a blast furnace, belonging to the field of blast furnace smelting.
Background
At present, a plurality of blast furnaces adopt structures of carbon bricks and ceramic cups at the furnace bottom. The method has the advantages of high use price and short service life, the furnace bottom carbon bricks are replaced once every four years on average, 15 days are needed for each replacement, and the operation time is influenced.
In recent years, the composite carbon brick gradually replaces the original carbon brick and ceramic cup structure, so that the service life of the blast furnace is prolonged due to the excellent heat-conducting property, the overhaul time is prolonged from four years to ten years, and the productivity benefit is greatly improved.
However, in the using process, the carbon bricks at the lower part of the furnace bottom are less damaged, and the damage to the carbon bricks is lower due to the high temperature in the furnace. In addition, the composite carbon brick has high price and large using amount.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides a composite carbon brick for the bottom of a blast furnace.
In order to achieve the technical purpose, the technical scheme provided by the utility model is as follows:
a composite carbon brick for mounting at the bottom of a blast furnace is fixed above a refractory brick layer at the bottom of the blast furnace; the composite carbon brick comprises: square carbon brick and fixed carbon brick, be provided with a plurality of dovetails on the square carbon brick, a plurality of square carbon bricks are laid on the horizontal plane, and the square carbon brick of adjacent square carbon brick mutually supports, the opening of dovetail rather than forming the enclosed construction after corresponding adjacent square carbon brick dovetail opening butt joint, be provided with fixed carbon brick in the enclosed construction, fixed carbon brick appearance suits with the enclosed construction, fixed carbon brick forms two square carbon brick fixed trends mutually that press close to.
After the fixed carbon bricks are arranged in the closed structure, the upper end surfaces of the fixed carbon bricks and the square carbon bricks are horizontal.
The fixed carbon brick thickness is 1/4 the square carbon brick thickness.
The square carbon bricks and the fixed carbon bricks are both composite carbon bricks for blast furnaces.
Refractory mortar is filled between adjacent square carbon bricks and between the square carbon bricks and the corresponding fixed carbon bricks, and the zirconia refractory fibers are stirred in the refractory mortar.
The composite carbon brick is at least three layers arranged above the furnace bottom refractory brick layer.
Compared with the prior art, the utility model has the following beneficial effects:
the utility model adopts the structures of the square carbon bricks and the fixed carbon bricks, can improve the coupling between the adjacent carbon bricks and reduce the position change caused by the impact of furnace slag and molten iron on the carbon bricks.
The utility model adopts the refractory mortar and the zirconia refractory fiber, avoids the problem of molten iron leakage, and simultaneously improves the adhesiveness between the square carbon bricks and prevents dislocation caused by thermal deformation.
The upper layer of the utility model adopts the composite carbon brick, the lower layer can continue to use the refractory brick, and the performance of the refractory brick at the lower layer can meet the normal use under the condition of heat insulation, and simultaneously, the cost is saved.
Drawings
FIG. 1 is a schematic view of the structure of the present invention.
Fig. 2 is a schematic view of the installation of the present invention.
FIG. 3 is a schematic view of a square carbon brick according to the present invention.
Fig. 4 is a schematic structural view of another square carbon brick of the present invention.
FIG. 5 is a schematic view of the structure of the fixed carbon brick of the present invention.
Fig. 6 is a cross-sectional view a-a of fig. 4 in accordance with the present invention.
In the figure: 1 is square carbon brick, 2 is fixed carbon brick, 11 is the dovetail, and 12 is the closed structure.
Detailed Description
For a further understanding of the utility model, reference is made to the following detailed description taken in conjunction with the accompanying drawings and examples:
as shown in fig. 1 to 6: the composite carbon brick for mounting at the bottom of the blast furnace is fixed above a refractory brick layer at the bottom of the blast furnace; the composite carbon brick comprises: square carbon brick 1 and fixed carbon brick 2, be provided with a plurality of dovetail 11 on the square carbon brick 1, a plurality of square carbon bricks 1 are laid on the horizontal plane, and square carbon brick 1 of adjacent square carbon brick 1 mutually supports, form closed structure 12 after the opening of dovetail 11 docks rather than corresponding 1 dovetail 11 openings of adjacent square carbon brick, be provided with fixed carbon brick 2 in the closed structure 12, 2 appearances of fixed carbon brick suit with closed structure 12, fixed carbon brick 2 forms two square carbon brick 1 that press close to mutually fixed trends.
After the fixed carbon brick 2 is installed in the closed structure 12, the upper end surfaces of the fixed carbon brick 2 and the square carbon brick 1 are horizontal.
The thickness of the fixed carbon brick 2 is 1/4 of the thickness of the square carbon brick 1.
The square carbon bricks 1 and the fixed carbon bricks 2 are both composite carbon bricks for blast furnaces.
Refractory mortar is filled between the adjacent square carbon bricks 1 and between the square carbon bricks 1 and the corresponding fixed carbon bricks 2, and the zirconia refractory fibers are stirred in the refractory mortar.
The composite carbon brick is at least three layers arranged above the furnace bottom refractory brick layer.
The volume of the fixed carbon brick 2 is smaller than the space in the closed structure 12, and the gap is a reserved expansion space.
The specific operation process of the utility model is as follows:
after the square carbon bricks 1 and the fixed carbon bricks 2 are installed, molten iron is above the composite carbon bricks, and the possibility of thermal expansion and cracking of the furnace bottom is reduced due to the excellent thermal conductivity of the materials of the square carbon bricks and the fixed carbon bricks. Meanwhile, the multilayer composite carbon bricks can isolate the molten iron leakage, and ensure the normal work of the lower refractory brick layer.
The above embodiments are merely illustrative of the principles of the present invention and its effects, and do not limit the present invention. It will be apparent to those skilled in the art that modifications and improvements can be made to the above-described embodiments without departing from the spirit and scope of the utility model. Accordingly, it is intended that all equivalent modifications or changes be made by those skilled in the art without departing from the spirit and technical spirit of the present invention, and be covered by the claims of the present invention.
Claims (6)
1. The utility model provides a compound carbon brick for installation of blast furnace bottom which characterized in that: the composite carbon brick is fixed above a refractory brick layer at the bottom of the blast furnace; the composite carbon brick comprises: square carbon brick (1) and fixed carbon brick (2), be provided with a plurality of dovetail (11) on square carbon brick (1), a plurality of square carbon brick (1) are laid on the horizontal plane, and square carbon brick (1) of adjacent square carbon brick (1) mutually support, the opening of dovetail (11) forms closed structure (12) rather than corresponding adjacent square carbon brick (1) dovetail (11) opening butt joint back, be provided with fixed carbon brick (2) in closed structure (12), fixed carbon brick (2) appearance suits with closed structure (12), fixed carbon brick (2) form two square carbon brick (1) fixed trends mutually that press close to.
2. The composite carbon brick for blast furnace bottom installation according to claim 1, characterized in that: after the fixed carbon bricks (2) are arranged in the closed structure (12), the upper end surfaces of the fixed carbon bricks (2) and the square carbon bricks (1) are horizontal.
3. The composite carbon brick for blast furnace bottom installation according to claim 2, characterized in that: the thickness of the fixed carbon brick (2) is 1/4 of the thickness of the square carbon brick (1).
4. The composite carbon brick for blast furnace bottom installation according to claim 3, characterized in that: the square carbon bricks (1) and the fixed carbon bricks (2) are both composite carbon bricks for blast furnaces.
5. The composite carbon brick for blast furnace bottom installation according to claim 4, characterized in that: refractory mortar is filled between adjacent square carbon bricks (1) and between the square carbon bricks (1) and the corresponding fixed carbon bricks (2), and the zirconia refractory fibers are stirred in the refractory mortar.
6. The composite carbon brick for blast furnace bottom installation according to claim 5, characterized in that: the composite carbon brick is at least three layers arranged above the furnace bottom refractory brick layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120973616.2U CN215713085U (en) | 2021-05-08 | 2021-05-08 | Composite carbon brick for mounting bottom of blast furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120973616.2U CN215713085U (en) | 2021-05-08 | 2021-05-08 | Composite carbon brick for mounting bottom of blast furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215713085U true CN215713085U (en) | 2022-02-01 |
Family
ID=80030868
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120973616.2U Expired - Fee Related CN215713085U (en) | 2021-05-08 | 2021-05-08 | Composite carbon brick for mounting bottom of blast furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215713085U (en) |
-
2021
- 2021-05-08 CN CN202120973616.2U patent/CN215713085U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220201 |