CN210151147U - Thermal shock resistant magnesia carbon brick for converter trunnion - Google Patents
Thermal shock resistant magnesia carbon brick for converter trunnion Download PDFInfo
- Publication number
- CN210151147U CN210151147U CN201920416414.0U CN201920416414U CN210151147U CN 210151147 U CN210151147 U CN 210151147U CN 201920416414 U CN201920416414 U CN 201920416414U CN 210151147 U CN210151147 U CN 210151147U
- Authority
- CN
- China
- Prior art keywords
- layer
- thermal shock
- brick
- magnesia
- magnesia carbon
- 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
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- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 title claims abstract description 70
- 239000011449 brick Substances 0.000 title claims abstract description 46
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 45
- 239000000395 magnesium oxide Substances 0.000 title claims abstract description 35
- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 23
- 230000035939 shock Effects 0.000 title claims abstract description 21
- 239000010439 graphite Substances 0.000 claims abstract description 21
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 21
- 239000000463 material Substances 0.000 claims description 9
- 239000002994 raw material Substances 0.000 abstract description 4
- 238000001816 cooling Methods 0.000 abstract description 3
- 230000002035 prolonged effect Effects 0.000 abstract description 3
- 239000001095 magnesium carbonate Substances 0.000 description 5
- 235000014380 magnesium carbonate Nutrition 0.000 description 5
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 description 5
- 229910000021 magnesium carbonate Inorganic materials 0.000 description 5
- 238000003723 Smelting Methods 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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- Carbon Steel Or Casting Steel Manufacturing (AREA)
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
Abstract
The utility model discloses a converter trunnion is with thermal shock resistance magnesia carbon brick, including the brick body, its characterized in that: the whole appearance of the brick body is designed into a regular hexagon, the brick body is designed in a layered mode and comprises a graphite layer and a magnesia layer, and the graphite layer and the magnesia layer are mixed, pressed and distributed layer by layer; compared with the existing product, the thermal shock resistant magnesia carbon brick for the converter trunnion provided by the utility model has the advantages that the thickness is reduced by 10%, and the cooling rate which can be endured by the product is improved by reducing the effective thickness of the product; by improving the types and the structures of the raw materials, the thermal shock resistance of the magnesia carbon bricks used for the trunnion of the converter is improved, the service life of the furnace lining of the furnace body is effectively prolonged, and economic benefits are brought to customers.
Description
Technical Field
The utility model relates to a magnesia carbon brick especially relates to a converter trunnion is with thermal shock resistance magnesia carbon brick, belongs to metallurgical equipment technical field.
Background
When tapping in converter smelting, the trunnion part is easy to be corroded by slag and subjected to mechanical impact and thermal shock of molten steel, and the quality of the magnesia carbon brick greatly affects the core problems of furnace age, smelting process, slag splashing furnace protection, furnace lining maintenance and the like. In general, magnesia and graphite are selected as main raw materials, and the magnesia carbon brick is prepared from the magnesia carbon brick with the C content of about 12 wt%, so that the magnesia carbon brick has the mechanical wear resistance, but the thermal shock resistance is easily influenced by the type and the content of the graphite, and particularly, the trunnion part is easily damaged by thermal shock.
Disclosure of Invention
Technical problem to be solved
In order to solve the problems, the utility model provides a thermal shock resistant magnesia carbon brick for converter trunnion.
(II) technical scheme
The utility model discloses a converter trunnion is with thermal shock resistance magnesia carbon brick, including the brick body, its characterized in that: the whole appearance of the brick body is designed into a regular hexagon, the brick body is designed in a layered mode and comprises a graphite layer and a magnesia layer, and the graphite layer and the magnesia layer are mixed, pressed and distributed layer by layer.
Furthermore, the graphite layer adopts large flake graphite as a main body material.
Furthermore, the magnesite layer adopts electric melting magnesite as a main material and is matched with the crystalline flake graphite.
Furthermore, the whole brick body is designed into a regular hexagon, and all materials are uniformly distributed on the brick body.
Furthermore, the overall diameter of the brick body is 280-290 mm, and the height of the brick body is 120-130 mm.
(III) advantageous effects
Compared with the prior art, the utility model, it has following beneficial effect: compared with the existing product, the thermal shock resistant magnesia carbon brick for the converter trunnion provided by the utility model has the advantages that the thickness is reduced by 10%, and the cooling rate which can be endured by the product is improved by reducing the effective thickness of the product; by improving the types and the structures of the raw materials, the thermal shock resistance of the magnesia carbon bricks used for the trunnion of the converter is improved, the service life of the furnace lining of the furnace body is effectively prolonged, and economic benefits are brought to customers.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a front view of the present invention.
1-brick body; 2-a graphite layer; 3-a magnesium sand layer; 4-flake graphite; 5-fused magnesite.
Detailed Description
The thermal shock resistant magnesia carbon brick for the trunnion of the converter shown in the attached drawing comprises a brick body 1 and is characterized in that: the whole appearance of the brick body 1 is designed into a regular hexagon, the brick body 1 is designed in a layered mode and comprises a graphite layer 2 and a magnesia layer 3, and the graphite layer and the magnesia layer are mixed, pressed and distributed layer by layer.
Wherein, the graphite layer 2 adopts large flake graphite 4 as a main material; the magnesite layer 3 adopts fused magnesite as a main material and is matched with the crystalline flake graphite 5; the whole brick body 1 is designed into a regular hexagon, and all materials are uniformly distributed on the brick body 1; the whole diameter of the brick body 1 is 280-290 mm, and the height is 120-130 mm.
Compared with the existing product, the thermal shock resistant magnesia carbon brick for the converter trunnion provided by the utility model has the advantages that the thickness is reduced by 10%, and the cooling rate which can be endured by the product is improved by reducing the effective thickness of the product; the apparent porosity is less than or equal to 4.0, the whole volume density is more than or equal to 2.94/(g cm-3), the normal temperature compressive strength is more than or equal to 25 Mpa,w（MgO）/%≥77.0，w(C) /% > is more than or equal to 12.0; by improving the types and the structures of the raw materials, the thermal shock resistance of the magnesia carbon bricks used for the trunnion of the converter is improved, the service life of the furnace lining of the furnace body is effectively prolonged, and economic benefits are brought to customers.
The above-described embodiments are merely illustrative of the preferred embodiments of the present invention and are not intended to limit the spirit and scope of the present invention. Without departing from the design concept of the present invention, various modifications and improvements made by the technical solution of the present invention by those skilled in the art should fall into the protection scope of the present invention, and the technical contents claimed by the present invention have been fully recorded in the claims.
Claims (5)
1. The utility model provides a converter trunnion is with thermal shock resistance magnesia carbon brick, includes brick body (1), its characterized in that: the integral appearance of the brick body (1) is designed into a regular hexagon, the brick body (1) adopts a layered design and comprises a graphite layer (2) and a magnesia layer (3), and the graphite layer and the magnesia layer are mixed and pressed and distributed layer by layer.
2. The thermal shock resistant magnesia carbon brick for converter trunnions according to claim 1, wherein: the graphite layer (2) adopts large flake graphite (4) as a main body material.
3. The thermal shock resistant magnesia carbon brick for converter trunnions according to claim 1, wherein: the magnesia layer (3) adopts fused magnesia as a main material and is matched with the crystalline flake graphite (5).
4. The thermal shock resistant magnesia carbon brick for converter trunnions according to claim 1, wherein: the brick body (1) is integrally designed into a regular hexagon, and all materials are uniformly distributed on the brick body (1).
5. The thermal shock resistant magnesia carbon brick for converter trunnions according to claim 1, wherein: the whole diameter of the brick body (1) is 280-290 mm, and the height is 120-130 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920416414.0U CN210151147U (en) | 2019-03-29 | 2019-03-29 | Thermal shock resistant magnesia carbon brick for converter trunnion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920416414.0U CN210151147U (en) | 2019-03-29 | 2019-03-29 | Thermal shock resistant magnesia carbon brick for converter trunnion |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210151147U true CN210151147U (en) | 2020-03-17 |
Family
ID=69756098
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920416414.0U Expired - Fee Related CN210151147U (en) | 2019-03-29 | 2019-03-29 | Thermal shock resistant magnesia carbon brick for converter trunnion |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210151147U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116287534A (en) * | 2023-01-28 | 2023-06-23 | 马鞍山利尔开元新材料有限公司 | Low-carbon composite converter tapping hole brick and preparation method thereof |
-
2019
- 2019-03-29 CN CN201920416414.0U patent/CN210151147U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116287534A (en) * | 2023-01-28 | 2023-06-23 | 马鞍山利尔开元新材料有限公司 | Low-carbon composite converter tapping hole brick and preparation method thereof |
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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 |
Granted publication date: 20200317 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |