CN219861426U - Integrated high-performance lining brick for converter - Google Patents
Integrated high-performance lining brick for converter Download PDFInfo
- Publication number
- CN219861426U CN219861426U CN202320521280.5U CN202320521280U CN219861426U CN 219861426 U CN219861426 U CN 219861426U CN 202320521280 U CN202320521280 U CN 202320521280U CN 219861426 U CN219861426 U CN 219861426U
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- CN
- China
- Prior art keywords
- brick
- converter
- lining
- layer
- masonry
- Prior art date
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- 239000011449 brick Substances 0.000 title claims abstract description 106
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 62
- 239000000395 magnesium oxide Substances 0.000 claims description 31
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 14
- 229910052799 carbon Inorganic materials 0.000 claims description 14
- 239000010959 steel Substances 0.000 abstract description 11
- 229910000831 Steel Inorganic materials 0.000 abstract description 10
- 239000011819 refractory material Substances 0.000 abstract description 8
- 238000000034 method Methods 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 238000003723 Smelting Methods 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 238000004134 energy conservation Methods 0.000 abstract 1
- 230000007613 environmental effect Effects 0.000 abstract 1
- 238000010304 firing Methods 0.000 abstract 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 8
- 238000009628 steelmaking Methods 0.000 description 8
- 239000002893 slag Substances 0.000 description 7
- 238000010276 construction Methods 0.000 description 6
- 239000002994 raw material Substances 0.000 description 6
- 238000009413 insulation Methods 0.000 description 5
- 238000007664 blowing Methods 0.000 description 4
- 239000011094 fiberboard Substances 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 229910052742 iron Inorganic materials 0.000 description 4
- 230000003628 erosive effect Effects 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 230000035939 shock Effects 0.000 description 3
- 241001408630 Chloroclystis Species 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000011049 filling Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 238000004321 preservation Methods 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- 229910001021 Ferroalloy Inorganic materials 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 239000011233 carbonaceous binding agent Substances 0.000 description 1
- 239000003575 carbonaceous material Substances 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000000748 compression moulding Methods 0.000 description 1
- 238000005261 decarburization Methods 0.000 description 1
- 238000006477 desulfuration reaction Methods 0.000 description 1
- 230000023556 desulfurization Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000009991 scouring Methods 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Landscapes
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
- Carbon Steel Or Casting Steel Manufacturing (AREA)
Abstract
The utility model discloses an integrated high-performance lining brick for a converter, which belongs to the technical field of refractory materials for steel smelting converters and comprises a brick body, wherein the brick body comprises a permanent layer brick and a working layer brick, and the permanent layer brick and the working layer brick are connected through a clamping groove structure. The integral high-performance lining brick can simplify the masonry process, greatly shorten the masonry time, complete the masonry task within the specified time, meet the requirements of steel plants, and improve the integrity of the lining refractory of the converter. The utility model has simple production process, no high-temperature firing process, no dependence on a high-temperature tunnel kiln and the like, reduces the manufacturing cost, saves resources, responds to the call of national energy conservation and emission reduction, and is beneficial to environmental protection.
Description
Technical Field
The utility model belongs to the technical field of refractory materials for steel smelting converters, relates to an integrated high-performance lining brick for a converter, and in particular relates to an integrated high-performance lining brick for a working layer brick and a permanent layer brick for a converter.
Background
A converter is a type of steelmaking furnace, and generally refers to a tiltable cylindrical oxygen-blown steelmaking vessel. The converter steelmaking uses molten iron, scrap steel and ferroalloy as main raw materials, does not use external energy sources, and depends on the physical heat of molten iron and chemical reaction between molten iron components to generate heat, so as to complete the steelmaking process in the converter. The converters are classified into acid converters and alkaline converters according to the refractory properties; the parts blown into the furnace according to the gas are divided into top blowing, bottom blowing, side blowing and top-bottom combined blowing converters; the types of the blown gas are classified into an air and an oxygen converter. The converter steelmaking mainly plays roles of decarburization, dephosphorization, desulfurization, deoxidation, removal of harmful gases and impurities, temperature adjustment, component adjustment and the like.
The lining refractory material for the metal furnace shell of the converter is generally divided into three parts, namely a heat insulation layer, a permanent layer, a working layer and the like. The heat insulation layer plays a role in heat insulation and heat preservation, and a fireproof fiber board is generally adopted as a heat insulation material; the permanent layer plays roles of heat insulation, heat preservation, safety coefficient improvement and the like, and generally adopts sintered magnesia bricks as refractory materials of the permanent layer; the working layer is directly contacted with the scouring erosion of molten steel, slag, furnace gas and the like, and magnesia carbon bricks are generally adopted as refractory materials of the working layer.
Magnesia carbon brick is a unburned refractory material which is formed by taking magnesia with high melting point and a high melting point carbon material which is difficult to infiltrate by slag as raw materials, adding various non-oxide additives and combining with a carbonaceous binding agent. The magnesia carbon brick is mainly used for lining of converter, AC arc furnace and DC arc furnace, slag line of ladle, etc. Has the advantages of good thermal shock stability, high temperature resistance, strong slag erosion resistance, good thermal shock resistance, low high temperature creep and the like.
The burned magnesia brick is an alkaline refractory product which takes magnesia as a main raw material and is burned. The burned magnesia bricks are mainly used for steelmaking alkaline open-hearth furnaces, furnace walls and furnace bottoms of electric furnaces, permanent linings of oxygen converters, iron-mixing furnaces, nonferrous smelting furnaces and high-temperature tunnel furnaces; lining of rotary kiln for calcining magnesia and cement, upper layer lattice brick of glass melting furnace, furnace bottom and furnace end of steel rolling soaking furnace and heating furnace, etc. The baked magnesia brick has high load softening temperature, strong alkali slag corrosion resistance, poor thermal shock resistance, weak acid slag corrosion resistance, high-temperature baking, environmental pollution, complex working procedures and high manufacturing cost.
The converter is used as an important component of a steelmaking system, has important significance for blast furnace ironmaking, production scheduling, steel yield and the like, and therefore, the control of the laying time of lining refractory materials of the converter is also particularly important, and a steel mill has strict regulations on the laying time of the lining refractory materials. In the traditional converter masonry process, the working layer bricks and the permanent layer bricks are required to be respectively built, so that the masonry process is increased, the masonry progress is reduced, the construction difficulty is improved, and the masonry time is also increased. Along with converter steelmaking of a steel plant, the addition amount of scrap iron becomes larger, the quality requirement on steel is higher and higher, the use environment of the converter magnesia carbon bricks is harsh, and the requirements on slag erosion resistance and the like of the converter magnesia carbon bricks are higher and higher.
Therefore, how to develop a working layer brick and permanent layer brick integrated high-performance lining brick for a converter with simple production process and simple construction is a technical problem to be solved by the technicians in the field.
Disclosure of Invention
In view of this, the present utility model provides a high performance lining brick that is integrated with a working layer brick and a permanent layer brick for a converter.
In order to achieve the above purpose, the present utility model adopts the following technical scheme:
the integrated high-performance lining brick for the converter comprises a brick body, wherein the brick body comprises a permanent layer brick and a working layer brick, and the permanent layer brick and the working layer brick are connected through a clamping groove structure.
The utility model has the beneficial effects that: the integrated high-performance lining brick solves the problems of complex construction, long construction time and the like of the working layer brick and the permanent layer brick when the converter is built, can simplify the building process, greatly shortens the building time, completes the building task within the specified time, meets the requirements of steel factories, and improves the integrity of the lining refractory of the converter.
Further, a plurality of clamping blocks are arranged on one side of the permanent layer brick, a plurality of clamping grooves are formed on one side of the working layer brick, and the clamping blocks are matched with the clamping grooves.
Further, the clamping block is a T-shaped clamping block or an L-shaped clamping block.
Further, the longitudinal section of the brick body is isosceles trapezoid, and the lower bottom of the isosceles trapezoid, namely the other side of the permanent layer brick, is designed in radian which is the same as that of the converter shell.
The beneficial effect of adopting the further technical scheme is that: the tail part of the integrated high-performance lining brick adopts an arc design, can be more tightly attached to a refractory fiberboard of a heat insulation layer during masonry, reduces masonry gaps, and improves masonry quality and safety coefficient.
Further, the permanent layer brick is a magnesia brick, and the working layer brick is a magnesia carbon brick.
Drawings
FIG. 1 is a schematic view of the structure of an integral high-performance lining brick for a converter.
FIG. 2 is a schematic view of the construction of a green permanent layered brick of the present utility model after a first preliminary molding.
Fig. 3 is a schematic view of the construction of the work layer tile after the second press molding of the present utility model.
Fig. 4 is a schematic plan view of a furnace body part of a lining refractory of a converter.
In the figure:
the heat-insulating brick comprises a 1-brick body, a 2-permanent layer brick, a 3-working layer brick, a 4-clamping groove structure, a 5-clamping block, a 6-clamping groove, a 7-isosceles trapezoid-like lower bottom, an 8-converter shell and a 9-heat-insulating layer fireproof fiberboard.
Detailed Description
The following description of the technical solutions in the embodiments of the present utility model will be clear and complete, and it is obvious that the described embodiments are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
The integrated high-performance lining brick for the converter comprises a brick body 1, wherein the brick body comprises a permanent layer brick 2 and a working layer brick 3, and the permanent layer brick 2 and the working layer brick 3 are connected through a clamping groove structure 4.
In one embodiment, a plurality of clamping blocks 5 are arranged on one side of the permanent layer brick 2, a plurality of clamping grooves 6 are arranged on one side of the working layer brick 3, and the clamping blocks 5 are matched with the clamping grooves 6.
In one embodiment, the latch 5 is a T-latch or an L-latch.
In one embodiment, the longitudinal section of the brick body 1 is in an isosceles trapezoid, the lower bottom 7 of the isosceles trapezoid, namely the other side of the permanent layer brick, is designed in radian, and the radian of the brick body is the same as that of the used converter shell 8, so that the brick body can be tightly attached to the heat-insulating layer fireproof fiberboard 9 during masonry, the masonry gap is reduced, and the masonry quality and the safety coefficient are improved.
In one embodiment, the permanent layer bricks 2 are magnesia bricks and the working layer bricks 3 are magnesia carbon bricks.
The preparation method of the integrated high-performance lining brick for the converter comprises the following steps:
(1) Weighing the raw materials;
(2) And (3) mixing and secondary forming operation:
(a) Mixing the raw materials of the permanent layer magnesia bricks by a wet mill to obtain permanent layer magnesia brick pugs; the magnesia carbon brick raw materials of the working layer are kneaded by a high-speed kneader to obtain magnesia carbon brick pugs of the working layer;
(b) Filling the permanent layer magnesia brick pug into a permanent layer magnesia brick die for compression molding to obtain a preliminary molded magnesia brick blank;
(c) Placing the preliminarily formed magnesia brick blank into a corresponding position in a die cavity of an integrated lining brick die, then filling magnesia carbon brick pug of a working layer into the die cavity of the integrated lining brick die, and performing secondary compression forming to obtain an integrated lining brick blank of the magnesia carbon brick of the working layer and the magnesia carbon brick of the permanent layer;
(3) And drying the magnesia carbon bricks of the working layer and the magnesia bricks of the permanent layer into an integral lining brick blank to obtain the integral high-performance lining brick for the converter.
The description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present utility model. 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 utility model. Thus, the present utility model 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 (2)
1. The integrated high-performance lining brick for the converter is characterized by comprising a brick body, wherein the brick body comprises a permanent layer brick and a working layer brick, and the permanent layer brick and the working layer brick are connected through a clamping groove structure;
a plurality of clamping blocks are arranged on one side of the permanent layer brick, a plurality of clamping grooves are formed on one side of the working layer brick, and the clamping blocks are matched with the clamping grooves;
the clamping block is a T-shaped clamping block or an L-shaped clamping block;
the longitudinal section of the brick body is isosceles trapezoid, and the lower bottom of the isosceles trapezoid, namely the other side of the permanent layer brick, is designed in radian which is the same as that of the used converter shell.
2. The integrated high performance lining tile for a converter of claim 1, wherein the permanent layer tile is a magnesia brick and the working layer tile is a magnesia carbon brick.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320521280.5U CN219861426U (en) | 2023-03-17 | 2023-03-17 | Integrated high-performance lining brick for converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320521280.5U CN219861426U (en) | 2023-03-17 | 2023-03-17 | Integrated high-performance lining brick for converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219861426U true CN219861426U (en) | 2023-10-20 |
Family
ID=88322535
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320521280.5U Active CN219861426U (en) | 2023-03-17 | 2023-03-17 | Integrated high-performance lining brick for converter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219861426U (en) |
-
2023
- 2023-03-17 CN CN202320521280.5U patent/CN219861426U/en active Active
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |