CN207760370U - The blast-furnace shaft structure of taper mutation - Google Patents
The blast-furnace shaft structure of taper mutation Download PDFInfo
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- CN207760370U CN207760370U CN201721737363.9U CN201721737363U CN207760370U CN 207760370 U CN207760370 U CN 207760370U CN 201721737363 U CN201721737363 U CN 201721737363U CN 207760370 U CN207760370 U CN 207760370U
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Abstract
The utility model is a kind of blast-furnace shaft structure of taper mutation, including furnace shell, it is covered with furnace lining on the madial wall of furnace shell, furnace shell includes lower part shaft shell, the side wall of lower part shaft shell is arranged horizontal by the first shaft angle, and the top of lower part shaft shell is tightly connected top shaft shell, and top shaft shell is tapered and diameter tapered setting upwards, the side wall of top shaft shell is arranged horizontal by the second shaft angle, and the first shaft angle is more than the second shaft angle；Furnace lining includes the lower part lining of shaft and the top lining of shaft, lower part lining of shaft madial wall and the side wall of lower part shaft shell are set in parallel, top lining of shaft madial wall and the side wall of top shaft shell are set in parallel, and the lower part lining of shaft and the top lining of shaft are arranged in equal thickness.The structure can effectively reduce the influence of iron ore and sinter to furnace body structure top gas permeability after low temperature dusting and low-temperature expansion, improve gas permeability, create favorable conditions for reinforcing blast furnace smelting.
Description
Technical field
The utility model is related to metallurgy industry ironmaking technology field more particularly to a kind of blast-furnace shaft structures of taper mutation.
Background technology
Coal gas rises because of forced-air blast in blast furnace, and furnace charge, slag iron depend on its own gravity to decline.The smelting principle of blast furnace is just
It is to be come into full contact with by the coal gas of the furnace charge and rising that decline, chemical reaction occurs to produce the iron of simple substance.Only stove
When material and coal gas this are moved toward one another in a kind of dynamic balance state, the smelting of blast furnace can be just smoothed out.
Gas permeability is the important pneumatics feature of blast furnace burden, and it is strong that the gas permeability of furnace charge directly influences blast furnace process
Degree, for improving usage factor, reinforcing blast furnace smelting has significant impact.
The superstructure of traditional blast furnace 9 is as shown in Figure 6.The superstructure of furnace body includes furnace throat 91, shaft 92, furnace bosh
93, the shaft angle that side and the bottom surface of shaft 92 are constituted is fixed angle --- the first shaft angle α.Iron ore and sinter (ball
Nodulizing) pass through the top that material-feeding mechanism (prior art) enters shaft 92 from furnace throat 91, due to the lower part of furnace bosh 93 and shaft 92
There is the blast furnace raw material being added before, therefore iron ore and sinter (pellet) need the top short stay in shaft 92
(about 1 hour).Upper shaft temperature is generally in 500-600 DEG C of section, and iron ore and sinter (pellet) by air-flow due to being rushed
It hits and reduction process (Fe2O3-Fe3O4-FeO) influences that crystalline form variation occurs, it may occur that low temperature dusting and low-temperature expansion occur
Different degrees of fragmentation dusting, a large amount of powder make the reduction of stock column voidage, influence the gas permeability of upper blast furnace stock column, directly affect
Gas stream in the stove is distributed and burden direct motion.Low temperature dusting and low-temperature expansion occur for the iron ore and sinter (pellet) of upper shaft
It is affected afterwards for gas permeability, directly affects burden direct motion and reduction process.
The present inventor relies on experience and the practice for being engaged in relevant industries for many years as a result, proposes a kind of State of Blast Furnace of taper mutation
For the shadow of furnace charge air permeability after body structure, reduction iron ore and sinter (pellet) generation low temperature dusting and low-temperature expansion
It rings, improves gas permeability, create favorable conditions for reinforcing blast furnace smelting.
Utility model content
The purpose of this utility model is to provide a kind of blast-furnace shaft structure of taper mutation, which can effectively reduce
The influence of iron ore and sinter after low temperature dusting and low-temperature expansion to furnace body structure top gas permeability improves gas permeability, is
Reinforcing blast furnace smelting creates favorable conditions.
The purpose of this utility model is achieved in that a kind of blast-furnace shaft structure of taper mutation, including furnace shell, the stove
Be covered with furnace lining on the madial wall of shell, the furnace shell include tapered setting and diameter tapered lower part shaft shell upwards,
The side wall of the lower part shaft shell is arranged horizontal by the first shaft angle, and the top of the lower part shaft shell is tightly connected
Top shaft shell, the top shaft shell is tapered and diameter tapered setting upwards, the side wall of the top shaft shell
It is arranged horizontal by the second shaft angle, first shaft angle is more than second shaft angle；The furnace lining includes being covered on
The lower part lining of shaft on the lower part shaft case inside wall and the top being covered on the top shaft case inside wall
The lining of shaft, lower part lining of shaft madial wall and the side wall of the lower part shaft shell are set in parallel, in the lining of shaft of top
The side wall of side wall and the top shaft shell is set in parallel, the lower part lining of shaft and the top lining of shaft in etc.
Thickness is arranged.
In a better embodiment of the utility model, top lining of shaft lateral wall is covered on the top shaft shell
On the madial wall of body, the top lining of shaft madial wall and the top lining of shaft lateral wall are arranged in parallel, described
Top lining of shaft madial wall is arranged horizontal by the second shaft angle；Lower part lining of shaft lateral wall is covered on the lower furnace
On the madial wall of body shell, the lower part lining of shaft lateral wall and the lower part lining of shaft madial wall are arranged in parallel,
The lower part lining of shaft madial wall is arranged horizontal by the first shaft angle, the thickness of the lower part lining of shaft in the horizontal direction
It is in identical setting to spend with the thickness of the top lining of shaft in the horizontal direction.
In a better embodiment of the utility model, the furnace shell further includes that the bottom of the lower part shaft shell is close
The furnace bosh shell of connection being vertically arranged is sealed, the furnace lining further includes in the furnace bosh being covered on the furnace bosh case inside wall
Lining, the furnace bosh liner be arranged in equal thickness, and the thickness of the furnace bosh liner and the lower part lining of shaft are in the horizontal direction
Thickness is in identical setting.
In a better embodiment of the utility model, furnace bosh liner lateral wall is covered on the furnace bosh case inside wall
On, furnace bosh liner madial wall and furnace bosh liner lateral wall it is parallel to each other and be each perpendicular to horizontal plane setting.
In a better embodiment of the utility model, the furnace shell further includes that the top of the top shaft shell is close
The vertically set furnace throat shell of connection is sealed, the furnace lining further includes the furnace throat being covered on the furnace throat case inside wall
Liner, the furnace throat liner are arranged in equal thickness, and the thickness of the furnace throat liner and the top lining of shaft are in the horizontal direction
Thickness be in identical setting.
In a better embodiment of the utility model, furnace throat liner lateral wall is covered on the inside of the furnace throat shell
On wall, furnace throat liner madial wall and furnace throat liner lateral wall it is parallel to each other and be each perpendicular to horizontal plane setting.
In a better embodiment of the utility model, the furnace throat liner, the top lining of shaft, the lower part
The lining of shaft and the furnace bosh liner are constituted by cooling down equipment and refractory material unit.
In a better embodiment of the utility model, the height of the top shaft shell is the lower part shaft shell
The 1/3 of the height of body.
In a better embodiment of the utility model, the angle model of first shaft angle and second shaft angle
Enclose is 78 ° to 83 °.
From the above mentioned, the blast-furnace shaft structure of taper mutation provided by the utility model has the advantages that：
In the blast-furnace shaft structure of the taper mutation of the utility model, the upper and lower part of furnace shell has different shaft angles, under
First shaft angle of portion's shaft shell is reduced to the second shaft angle of top shaft shell, is covered on lower part shaft case inside wall
On the lower part lining of shaft and the top lining of shaft that is covered on the shaft case inside wall of top be arranged in equal thickness, thus stove
The variation synchronous with the shaft angle of furnace shell of the shaft angle of body inner cavity is changed by changing the shaft angle (taper) of top shaft shell
The shaft angle of shaft inner cavity so that the uplink of coal gas is more smooth in blast furnace, from being conducive to reduce iron ore and sinter (pelletizing
Mine) influence after low temperature dusting and low-temperature expansion occur for upper shaft to furnace charge air permeability, the improvement of gas permeability can promote
Blast furnace operating direct motion creates favorable conditions for reinforcing blast furnace smelting.
Description of the drawings
The following drawings is only intended in doing schematic illustration and explanation to the utility model, does not limit the model of the utility model
It encloses.Wherein：
Fig. 1：For the schematic diagram of the blast-furnace shaft structure of the taper mutation of the utility model.
Fig. 2：For the partial schematic diagram of the lower part lining of shaft of the utility model.
Fig. 3：For the partial schematic diagram of the top lining of shaft of the utility model.
Fig. 4：For the partial schematic diagram of the furnace bosh liner of the utility model.
Fig. 5：For the partial schematic diagram of the furnace throat liner of the utility model.
Fig. 6：For the schematic diagram of traditional blast furnace in the prior art.
In figure：
100, the blast-furnace shaft structure of taper mutation；
1, furnace shell；
11, lower part shaft shell；
12, top shaft shell；
13, furnace bosh shell；
14, furnace throat shell；
2, furnace lining；
21, the lower part lining of shaft；211, lower part lining of shaft madial wall；212, lower part lining of shaft lateral wall；
22, the top lining of shaft；221, top lining of shaft madial wall；222, top lining of shaft lateral wall；
23, furnace bosh liner；231, furnace bosh liner madial wall；232, furnace bosh liner lateral wall；
24, furnace throat liner；241, furnace throat liner madial wall；242, furnace throat liner lateral wall；
9, traditional blast furnace；91, furnace throat；92, shaft；93, furnace bosh.
Specific implementation mode
For a clearer understanding of the technical features, objectives and effects of the utility model, existing control description of the drawings
Specific embodiment of the present utility model.
As shown in Fig. 1 to 5, the utility model provides a kind of blast-furnace shaft structure 100 of taper mutation, including furnace shell 1, furnace shell
Be covered with furnace lining 2 on 1 madial wall, furnace shell 1 include tapered setting and diameter tapered lower part shaft shell 11 upwards, under
The side wall of portion's shaft shell 11 is horizontal by the first shaft angle α settings (identical as the shaft angle of traditional blast furnace), lower part
The top of shaft shell 11 is tightly connected top shaft shell 12, and top shaft shell 12 is tapered and diameter is tapered upwards sets
It sets, the height of top shaft shell 12 is less than the height of lower part shaft shell 11, in a specific embodiment of the utility model,
The height of top shaft shell 12 is the 1/3 of the height of lower part shaft shell 11, the side wall and horizontal plane of top shaft shell 12
In the second shaft angle β settings, the first shaft angle α is more than the second shaft angle β, in a specific embodiment of the utility model, the
One shaft angle α, the second shaft angle β angular range be 78 ° to 83 °；Furnace lining 2 includes being covered on 11 madial wall of lower part shaft shell
On the lower part lining of shaft 21 and the top lining of shaft 22 that is covered on 12 madial wall of top shaft shell, the lower part lining of shaft
Madial wall 211 and the side wall of lower part shaft shell 11 are set in parallel, top lining of shaft madial wall 221 and top shaft shell
12 side wall is set in parallel, and the lower part lining of shaft 21 and the top lining of shaft 22 are arranged in equal thickness.The change of the utility model
In the blast-furnace shaft structure 100 of taper, the upper and lower part of furnace shell 1 has different shaft angles, by the first of lower part shaft shell 11
Shaft angle α is reduced to the second shaft angle β of top shaft shell 12, the lower furnace being covered on 11 madial wall of lower part shaft shell
Body liner 21 and the top lining of shaft 22 being covered on 12 madial wall of top shaft shell are arranged in equal thickness, in shaft
The variation synchronous with the shaft angle of furnace shell 1 of the shaft angle of chamber changes stove by changing the shaft angle (taper) of top shaft shell 12
The shaft angle of body inner cavity, the second shaft angle β is in reducing setting so that the uplink of coal gas is more smooth in blast furnace, from being conducive to reduce
The influence of iron ore and sinter (pellet) after low temperature dusting and low-temperature expansion occur for upper shaft to furnace charge air permeability, thoroughly
The improvement of gas can promote blast furnace operating direct motion, create favorable conditions for reinforcing blast furnace smelting.
Further, top lining of shaft lateral wall 222 is tightly attached on the madial wall of top shaft shell 12, as shown in figure 3,
Top lining of shaft madial wall 221 and top lining of shaft lateral wall 222 are arranged in parallel, top lining of shaft madial wall
221 horizontal by the second shaft angle β settings；The thickness of the top lining of shaft 22 in the horizontal direction is set as numerical value T；Lower furnace
Body liner lateral wall 212 is covered on the madial wall of lower part shaft shell 11, as shown in Fig. 2, lower part lining of shaft lateral wall 212
Arranged in parallel with lower part lining of shaft madial wall 211, lower part lining of shaft madial wall 211 is horizontal by the first shaft angle
α is arranged, and the thickness of the lower part lining of shaft in the horizontal direction is in identical setting with the thickness of the top lining of shaft in the horizontal direction,
Thickness value is T.
Further, as shown in Figure 1, furnace shell 1 further includes being vertically arranged for the sealed bottom connection of lower part shaft shell 11
Furnace bosh shell 13, furnace lining further include the furnace bosh liner 23 being covered on 13 madial wall of furnace bosh shell, and furnace bosh liner 23 is in equal thickness
Setting, the thickness of furnace bosh liner 23 are in identical setting with the thickness in the horizontal direction of the lower part lining of shaft 21.Furnace bosh liner 23
It is arranged in equal thickness, furnace bosh liner lateral wall 232 is tightly attached on 13 madial wall of furnace bosh shell, as shown in figure 4, on the inside of furnace bosh liner
Wall 231 and furnace bosh liner lateral wall 232 it is parallel to each other and all perpendicular to horizontal plane be arranged, the thickness and lower furnace of furnace bosh liner 23
The identical setting of the thickness of body liner 21 in the horizontal direction, thickness value T.
Further, as shown in Figure 1, furnace shell 1 further includes setting straight up for the top sealed connection of top shaft shell 12
The furnace throat shell 14 set, furnace lining further include the furnace throat liner 24 being covered on 14 madial wall of furnace throat shell, furnace throat liner 24 in etc.
Thickness is arranged, and the thickness of the thickness of furnace throat liner 24 and the top lining of shaft 22 in the horizontal direction is in identical setting.Furnace throat liner
Lateral wall 242 is tightly attached on 14 madial wall of furnace throat shell, as shown in figure 5, furnace throat liner madial wall 241 and furnace throat liner lateral wall
242 is parallel to each other and all perpendicular to horizontal plane, thickness and the thickness of the top lining of shaft 22 in the horizontal direction of furnace throat liner 24
In identical setting, thickness value T.
Further, furnace throat liner 24, the top lining of shaft 22, the lower part lining of shaft 21 and furnace bosh liner 23 are by cooling equipment
It is constituted with refractory material unit.Furnace throat liner 24, the top lining of shaft 22, the lower part lining of shaft 21 and furnace bosh liner 23 are usually
It is built by laying bricks or stones, brick masonry with ceramic material brick (clay brick and high-alumina brick etc.) and carbonaceous material brick (carbon brick and carbon smash graphite etc.)
Bricking is constituted, bricking effect is to constitute blast furnace working space, directly against machinery, high temperature and chemical erosion in smelting process,
The radiation loss of blast furnace is reduced, and other metal structures on furnace shell 1 and blast furnace is protected to be acted on from high temperature and chemical erosion.Furnace throat
Liner 24, the top lining of shaft 22, the lower part lining of shaft 21 and furnace bosh liner 23 can reduce furnace shell heat dissipation capacity, and cooling is arranged in brick
Equipment prevents shell deformation.Local bricking first damages and shortens the life of the blast furnace in order to prevent, it is necessary to according to damage, cooling and blast furnace
The factors such as operation, select different firebrick lining.Generally, furnace throat liner 24 and the top lining of shaft 22 using have wear resistence and
The material of thermal stability, is advisable with clay brick；The lower part lining of shaft 21 and the carbonaceous material brick multi-purpose greatly of furnace bosh liner 23.
From the above mentioned, the blast-furnace shaft structure of taper mutation provided by the utility model has the advantages that：
In the blast-furnace shaft structure of the taper mutation of the utility model, the upper and lower part of furnace shell has different shaft angles, under
First shaft angle of portion's shaft shell is reduced to the second shaft angle of top shaft shell, is covered on lower part shaft case inside wall
On the lower part lining of shaft and the top lining of shaft that is covered on the shaft case inside wall of top be arranged in equal thickness, thus stove
The variation synchronous with the shaft angle of furnace shell of the shaft angle of body inner cavity is changed by changing the shaft angle (taper) of top shaft shell
The shaft angle of shaft inner cavity so that the uplink of coal gas is more smooth in blast furnace, from being conducive to reduce iron ore and sinter (pelletizing
Mine) influence after low temperature dusting and low-temperature expansion occur for upper shaft to furnace charge air permeability, the improvement of gas permeability can promote
Blast furnace operating direct motion creates favorable conditions for reinforcing blast furnace smelting.
The above descriptions are merely exemplary embodiments of the present utility model, is not limited to the model of the utility model
It encloses.Any those skilled in the art, made equivalent change under the premise of not departing from the design and principle of the utility model
Change and change, the range of the utility model protection should all be belonged to.
Claims (9)
1. a kind of blast-furnace shaft structure of taper mutation, including furnace shell, it is covered with furnace lining on the madial wall of the furnace shell, feature exists
In, the furnace shell include tapered setting and diameter tapered lower part shaft shell upwards, the side of the lower part shaft shell
Wall is arranged horizontal by the first shaft angle, and the top of the lower part shaft shell is tightly connected top shaft shell, it is described on
Portion's shaft shell is tapered and diameter tapered setting upwards, and the side wall of the top shaft shell is horizontal by the second shaft angle
Setting, first shaft angle are more than second shaft angle；The furnace lining includes being covered on the lower part shaft case inside
The lower part lining of shaft on wall and the top lining of shaft being covered on the top shaft case inside wall, the lower part lining of shaft
The side wall of madial wall and the lower part shaft shell is set in parallel, top lining of shaft madial wall and the top shaft shell
Side wall be set in parallel, the lower part lining of shaft and the top lining of shaft are arranged in equal thickness.
2. the blast-furnace shaft structure of taper mutation as described in claim 1, which is characterized in that top lining of shaft lateral wall pastes
In on the madial wall of the top shaft shell, the top lining of shaft madial wall and the top lining of shaft lateral wall phase
It is mutually arranged in parallel, the top lining of shaft madial wall is arranged horizontal by the second shaft angle；Lower part lining of shaft lateral wall
It is covered on the madial wall of the lower part shaft shell, the lower part lining of shaft lateral wall and lower part lining of shaft inside
Wall is arranged in parallel, and the lower part lining of shaft madial wall is arranged horizontal by the first shaft angle, in the lower part shaft
The thickness of lining in the horizontal direction is in identical setting with the thickness of the top lining of shaft in the horizontal direction.
3. the blast-furnace shaft structure of taper mutation as described in claim 1, which is characterized in that the furnace shell further includes the lower part
The furnace bosh shell of the sealed bottom connection of shaft shell being vertically arranged, the furnace lining further includes being covered in the furnace bosh shell
Furnace bosh liner on side wall, the furnace bosh liner are arranged in equal thickness, in the thickness of the furnace bosh liner and the lower part shaft
The thickness of lining in the horizontal direction is in identical setting.
4. the blast-furnace shaft structure of taper mutation as claimed in claim 3, which is characterized in that furnace bosh liner lateral wall is covered on institute
It states on furnace bosh case inside wall, furnace bosh liner madial wall and furnace bosh liner lateral wall are parallel to each other and be each perpendicular to horizontal plane and set
It sets.
5. the blast-furnace shaft structure of taper mutation as claimed in claim 3, which is characterized in that the furnace shell further includes the top
The vertically set furnace throat shell that the top of shaft shell is tightly connected, the furnace lining further includes being covered on the furnace throat shell
Furnace throat liner on internal side wall, the furnace throat liner are arranged in equal thickness, thickness and the upper furnace of the furnace throat liner
The thickness of body liner in the horizontal direction is in identical setting.
6. the blast-furnace shaft structure of taper mutation as claimed in claim 5, which is characterized in that furnace throat liner lateral wall is covered on institute
On the madial wall for stating furnace throat shell, furnace throat liner madial wall and furnace throat liner lateral wall are parallel to each other and be each perpendicular to horizontal plane and set
It sets.
7. the blast-furnace shaft structure of taper mutation as claimed in claim 5, which is characterized in that the furnace throat liner, the top
The lining of shaft, the lower part lining of shaft and the furnace bosh liner are constituted by cooling down equipment and refractory material unit.
8. the blast-furnace shaft structure of taper mutation as described in claim 1, which is characterized in that the height of the top shaft shell
It is the 1/3 of the height of the lower part shaft shell.
9. the blast-furnace shaft structure of taper mutation as described in claim 1, which is characterized in that first shaft angle and described
The angular range of two shaft angles is 78 ° to 83 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721737363.9U CN207760370U (en) | 2017-12-13 | 2017-12-13 | The blast-furnace shaft structure of taper mutation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721737363.9U CN207760370U (en) | 2017-12-13 | 2017-12-13 | The blast-furnace shaft structure of taper mutation |
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| Publication Number | Publication Date |
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| CN207760370U true CN207760370U (en) | 2018-08-24 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107841584A (en) * | 2017-12-13 | 2018-03-27 | 中冶京诚工程技术有限公司 | The blast-furnace shaft structure of taper mutation |
-
2017
- 2017-12-13 CN CN201721737363.9U patent/CN207760370U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107841584A (en) * | 2017-12-13 | 2018-03-27 | 中冶京诚工程技术有限公司 | The blast-furnace shaft structure of taper mutation |
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