CN107841584A - The blast-furnace shaft structure of taper mutation - Google Patents
The blast-furnace shaft structure of taper mutation Download PDFInfo
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- CN107841584A CN107841584A CN201711324399.9A CN201711324399A CN107841584A CN 107841584 A CN107841584 A CN 107841584A CN 201711324399 A CN201711324399 A CN 201711324399A CN 107841584 A CN107841584 A CN 107841584A
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- shaft
- furnace
- lining
- housing
- liner
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B7/00—Blast furnaces
- C21B7/02—Internal forms
Abstract
The present invention is a kind of blast-furnace shaft structure of taper mutation, including furnace shell, furnace lining is covered with the madial wall of furnace shell, furnace shell includes bottom shaft housing, the side wall of bottom shaft housing is set horizontal by the first shaft angle, and the top of bottom shaft housing is tightly connected top shaft housing, and top shaft housing is tapered and diameter tapered setting upwards, the side wall of top shaft housing is set horizontal by the second shaft angle, and the first shaft angle is more than the second shaft angle；Furnace lining includes the bottom lining of shaft and the top lining of shaft, the side wall of bottom lining of shaft madial wall and bottom shaft housing is set in parallel, the side wall of top lining of shaft madial wall and top shaft housing is set in parallel, and the bottom lining of shaft and the top lining of shaft are set in equal thickness.The structure can effectively reduce the influence of iron ore and sintering deposit to furnace body structure top gas permeability after low temperature efflorescence and low-temperature expansion, improve gas permeability, smelt and create favorable conditions for reinforcing blast furnace.
Description
Technical field
The present invention relates to the blast-furnace shaft structure in metallurgy industry ironmaking technology field, more particularly to a kind of taper mutation.
Background technology
Coal gas rises because of forced-air blast in blast furnace, and furnace charge, slag iron depend on self gravitation to decline.The smelting principle of blast furnace is just
It is fully to be contacted with the coal gas risen by the furnace charge declined, chemical reaction occurs so as to produce the iron of simple substance.Only stove
When this move toward one another of material and coal gas is 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 body of heater includes furnace throat 91, shaft 92, furnace bosh
93, the shaft angle that the side of shaft 92 is formed with bottom surface is fixed angle --- the first shaft angle α.Iron ore and sintering deposit (ball
Nodulizing) by top of the material-feeding mechanism (prior art) from furnace throat 91 into shaft 92, due to the bottom of furnace bosh 93 and shaft 92
There is the blast furnace raw material added before, therefore iron ore and sintering deposit (pellet) need the top short stay in shaft 92
(about 1 hour).Upper shaft temperature is typically in 500-600 DEG C of section, and iron ore and sintering deposit (pellet) by air-flow due to being rushed
Hit and reduction process (Fe2O3-Fe3O4-FeO) influences that crystalline form change occurs, it may occur that low temperature efflorescence and low-temperature expansion, occur
Different degrees of fragmentation efflorescence, 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 efflorescence and low-temperature expansion occur for the iron ore and sintering deposit (pellet) of upper shaft
Had a great influence afterwards for gas permeability, directly affect burden direct motion and reduction process.
Thus, the present inventor relies on experience and the practice for being engaged in relevant industries for many years, 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 sintering deposit (pellet) generation low temperature efflorescence and low-temperature expansion
Ring, improve gas permeability, smelt and create favorable conditions for reinforcing blast furnace.
The content of the invention
It is an object of the invention to provide a kind of blast-furnace shaft structure of taper mutation, the structure can effectively reduce iron ore
The influence of stone and sintering deposit after low temperature efflorescence and low-temperature expansion to furnace body structure top gas permeability, improve gas permeability, to strengthen
Blast furnace process creates favorable conditions.
The object of the present invention is achieved like this, a kind of blast-furnace shaft structure of taper mutation, including furnace shell, the furnace shell
It is covered with furnace lining on madial wall, the furnace shell includes tapered setting and diameter tapered bottom shaft housing upwards is described
The side wall of bottom shaft housing is set horizontal by the first shaft angle, and the top of the bottom shaft housing is tightly connected top
Shaft housing, the top shaft housing is tapered and diameter tapered setting upwards, the side wall and water of the top shaft housing
Plane is set in the second shaft angle, and first shaft angle is more than second shaft angle；The furnace lining is described including being covered on
The bottom lining of shaft on the shaft case inside wall of bottom and the top shaft being covered on the top shaft case inside wall
Liner, the side wall of bottom lining of shaft madial wall and the bottom shaft housing are set in parallel, top lining of shaft madial wall
It is set in parallel with the side wall of the top shaft housing, the bottom lining of shaft and the top lining of shaft are in equal thickness
Set.
In the better embodiment of the present invention, top lining of shaft lateral wall is covered on the top shaft housing
On madial wall, the top lining of shaft madial wall and the top lining of shaft lateral wall are arranged in parallel, the top
Lining of shaft madial wall is set horizontal by the second shaft angle；Bottom lining of shaft lateral wall is covered on the bottom shaft shell
On the madial wall of body, the bottom lining of shaft lateral wall and the bottom lining of shaft madial wall are arranged in parallel, described
Bottom lining of shaft madial wall is set horizontal by the first shaft angle, the thickness of the bottom lining of shaft in the horizontal direction with
The thickness of the top lining of shaft in the horizontal direction is in identical setting.
In the better embodiment of the present invention, the furnace shell also sealed bottom including the bottom shaft housing connects
The furnace bosh housing being vertically arranged connect, the furnace lining also include the furnace bosh liner being covered on the furnace bosh case inside wall, institute
State furnace bosh liner to set in equal thickness, thickness of the thickness of the furnace bosh liner with the bottom lining of shaft in the horizontal direction is in
Identical setting.
In the better embodiment of the present invention, furnace bosh liner lateral wall is covered on the furnace bosh case inside wall,
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 the better embodiment of the present invention, top sealing of the furnace shell also including the top shaft housing connects
The furnace throat housing set straight up connect, the furnace lining also include being covered in the furnace throat on the furnace throat case inside wall
Lining, the furnace throat liner set in equal thickness, and the thickness of the furnace throat liner and the top lining of shaft are in the horizontal direction
Thickness is in identical setting.
In the better embodiment of the present invention, furnace throat liner lateral wall is covered on the madial wall of the furnace throat housing
On, 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 the better embodiment of the present invention, the furnace throat liner, the top lining of shaft, the bottom shaft
Liner and the furnace bosh liner are made up of cooling device and refractory material unit.
In the better embodiment of the present invention, the height of the top shaft housing is the bottom shaft housing
The 1/3 of height.
In the better embodiment of the present invention, the angular range of first shaft angle and second shaft angle is
78 ° to 83 °.
From the above mentioned, the blast-furnace shaft structure of taper mutation provided by the invention has the advantages that：
In the blast-furnace shaft structure of the taper mutation of the present invention, the upper and lower part of furnace shell has different shaft angles, by lower furnace
First shaft angle of body housing is reduced to the second shaft angle of top shaft housing, is covered on the shaft case inside wall of bottom
The bottom lining of shaft and the top lining of shaft being covered on the shaft case inside wall of top are set in equal thickness, so as in shaft
The change synchronous with the shaft angle of furnace shell of the shaft angle of chamber, by changing the shaft angle (taper) of top shaft housing, changes shaft
The shaft angle of inner chamber so that coal gas is up more smooth in blast furnace, from being advantageous to reduce iron ore and sintering deposit (pellet)
Influence after low temperature efflorescence and low-temperature expansion occur for upper shaft to furnace charge air permeability, the improvement of gas permeability can promote blast furnace
Direct motion is operated, smelts and creates favorable conditions for reinforcing blast furnace.
Brief description of the drawings
The following drawings is only intended to, in doing schematic illustration and explanation to the present invention, not delimit the scope of the invention.Wherein：
Fig. 1：For the schematic diagram of the blast-furnace shaft structure of the taper mutation of the present invention.
Fig. 2：For the partial schematic diagram of the bottom lining of shaft of the present invention.
Fig. 3：For the partial schematic diagram of the top lining of shaft of the present invention.
Fig. 4：For the partial schematic diagram of the furnace bosh liner of the present invention.
Fig. 5：For the partial schematic diagram of the furnace throat liner of the present invention.
Fig. 6：For the schematic diagram of traditional blast furnace in the prior art.
In figure：
100th, the blast-furnace shaft structure of taper mutation；
1st, furnace shell；
11st, bottom shaft housing；
12nd, top shaft housing；
13rd, furnace bosh housing；
14th, furnace throat housing；
2nd, furnace lining；
21st, the bottom lining of shaft；211st, bottom lining of shaft madial wall；212nd, bottom lining of shaft lateral wall；
22nd, the top lining of shaft；221st, top lining of shaft madial wall；222nd, top lining of shaft lateral wall；
23rd, furnace bosh liner；231st, furnace bosh liner madial wall；232nd, furnace bosh liner lateral wall；
24th, furnace throat liner；241st, furnace throat liner madial wall；242nd, furnace throat liner lateral wall；
9th, traditional blast furnace；91st, furnace throat；92nd, shaft；93rd, furnace bosh.
Embodiment
In order to which technical characteristic, purpose and the effect of the present invention is more clearly understood, now control illustrates this hair
Bright embodiment.
As shown in Fig. 1 to 5, the present invention provides a kind of blast-furnace shaft structure 100 of taper mutation, including furnace shell 1, furnace shell 1
It is covered with furnace lining 2 on madial wall, furnace shell 1 includes tapered setting and diameter tapered bottom shaft housing 11 upwards, bottom
The side wall of shaft housing 11 is set horizontal by the first shaft angle α is (identical with the shaft angle of traditional blast furnace), lower furnace
The top of body housing 11 is tightly connected top shaft housing 12, and top shaft housing 12 is tapered and diameter tapered setting upwards,
The height of top shaft housing 12 is less than the height of bottom shaft housing 11, in the specific embodiment of the present invention, upper furnace
The height of body housing 12 is the 1/3 of the height of bottom shaft housing 11, and the side wall of top shaft housing 12 is horizontal by second
Shaft angle β is set, and the first shaft angle α is more than the second shaft angle β, in the specific embodiment of the present invention, the first shaft angle α,
Second shaft angle β angular range is 78 ° to 83 °；Furnace lining 2 includes the lower furnace being covered on the madial wall of bottom shaft housing 11
Body liner 21 and the top lining of shaft 22 being covered on the madial wall of top shaft housing 12, bottom lining of shaft madial wall 211
It is set in parallel with the side wall of bottom shaft housing 11, the side wall of top lining of shaft madial wall 221 and top shaft housing 12
It is set in parallel, the bottom lining of shaft 21 and the top lining of shaft 22 are set in equal thickness.The State of Blast Furnace of the taper mutation of the present invention
In body structure 100, the upper and lower part of furnace shell 1 has different shaft angles, is reduced by the first shaft angle α of bottom shaft housing 11
For the second shaft angle β of top shaft housing 12, the He of the bottom lining of shaft 21 being covered on the madial wall of bottom shaft housing 11
The top lining of shaft 22 being covered on the madial wall of top shaft housing 12 is set in equal thickness, so as to the shaft angle of shaft inner chamber
Change synchronous with the shaft angle of furnace shell 1, by changing the shaft angle (taper) of top shaft housing 12, change the stove of shaft inner chamber
Body angle, the second shaft angle β cause the up more smooth of coal gas in blast furnace in reducing to set, from being advantageous to reduce iron ore and burning
Tie influence of the ore deposit (pellet) to furnace charge air permeability after low temperature efflorescence and low-temperature expansion occur for upper shaft, the improvement of gas permeability
Blast furnace operating direct motion can be promoted, smelt and create favorable conditions for reinforcing blast furnace.
Further, top lining of shaft lateral wall 222 is close on the madial wall of top shaft housing 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 are set horizontal by the second shaft angle β；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 bottom shaft housing 11, as shown in Fig. 2 bottom lining of shaft lateral wall 212
Arranged in parallel with bottom lining of shaft madial wall 211, bottom lining of shaft madial wall 211 is horizontal by the first shaft angle
α is set, and thickness of the thickness of the bottom lining of shaft in the horizontal direction with the top lining of shaft in the horizontal direction is in identical setting, its
Thickness value is T.
Further, as shown in figure 1, being vertically arranged of connecting of the also sealed bottom including bottom shaft housing 11 of furnace shell 1
Furnace bosh housing 13, furnace lining also include the furnace bosh liner 23 being covered on the madial wall of furnace bosh housing 13, and furnace bosh liner 23 is in equal thickness
Set, the thickness of furnace bosh liner 23 is in identical setting with the thickness in the horizontal direction of the bottom lining of shaft 21.Furnace bosh liner 23
Set in equal thickness, furnace bosh liner lateral wall 232 is close on the madial wall of furnace bosh housing 13, 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 set, 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, top sealed connection of the furnace shell 1 also including top shaft housing 12 is set straight up
The furnace throat housing 14 put, furnace lining also include being covered on furnace throat liner 24 on the madial wall of furnace throat housing 14, furnace throat liner 24 in etc.
Thickness is set, and the thickness of the thickness of furnace throat liner 24 with the top lining of shaft 22 in the horizontal direction is in identical setting.Furnace throat liner
Lateral wall 242 is close on the madial wall of furnace throat housing 14, 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 bottom lining of shaft 21 and furnace bosh liner 23 are by cooling device
Formed with refractory material unit.Furnace throat liner 24, the top lining of shaft 22, the bottom lining of shaft 21 and furnace bosh liner 23 are usually
Build by laying bricks or stones and form with ceramic material brick (clay brick and high-alumina brick etc.) and carbonaceous material brick (carbon brick and carbon smash graphite etc.), brick masonry
Bricking is formed, bricking effect is to form blast furnace working space, directly against machinery, high temperature and chemical erosion in smelting process,
The radiation loss of blast furnace is reduced, and protects other metal structures on furnace shell 1 and blast furnace to be acted on from high temperature and chemical erosion.Furnace throat
Liner 24, the top lining of shaft 22, the bottom lining of shaft 21 and furnace bosh liner 23 can reduce furnace shell heat dissipation capacity, and cooling is set in brick
Equipment prevents shell deformation.Shorten the life of the blast furnace to prevent local bricking from first damaging, it is necessary to according to damage, cooling and blast furnace
The factors such as operation, from different firebrick lining.Typically, furnace throat liner 24 and the top lining of shaft 22 using have wear resistence and
The material of heat endurance, is advisable with clay brick；The bottom 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 invention has the advantages that：
In the blast-furnace shaft structure of the taper mutation of the present invention, the upper and lower part of furnace shell has different shaft angles, by lower furnace
First shaft angle of body housing is reduced to the second shaft angle of top shaft housing, is covered on the shaft case inside wall of bottom
The bottom lining of shaft and the top lining of shaft being covered on the shaft case inside wall of top are set in equal thickness, so as in shaft
The change synchronous with the shaft angle of furnace shell of the shaft angle of chamber, by changing the shaft angle (taper) of top shaft housing, changes shaft
The shaft angle of inner chamber so that coal gas is up more smooth in blast furnace, from being advantageous to reduce iron ore and sintering deposit (pellet)
Influence after low temperature efflorescence and low-temperature expansion occur for upper shaft to furnace charge air permeability, the improvement of gas permeability can promote blast furnace
Direct motion is operated, smelts and creates favorable conditions for reinforcing blast furnace.
The schematical embodiment of the present invention is the foregoing is only, is not limited to the scope of the present invention.It is any
Those skilled in the art, made equivalent variations and modification on the premise of the design of the present invention and principle is not departed from,
The scope of protection of the invention should be belonged to.
Claims (9)
1. a kind of blast-furnace shaft structure of taper mutation, including furnace shell, furnace lining is covered with the madial wall of the furnace shell, its feature exists
In, the furnace shell include tapered setting and diameter tapered bottom shaft housing upwards, the side of the bottom shaft housing
Wall is set horizontal by the first shaft angle, and the top of the bottom shaft housing is tightly connected top shaft housing, it is described on
Portion's shaft housing is tapered and diameter tapered setting upwards, and the side wall of the top shaft housing is horizontal by the second shaft angle
Set, first shaft angle is more than second shaft angle；The furnace lining includes being covered on the bottom shaft case inside
The bottom lining of shaft and the top lining of shaft being covered on the top shaft case inside wall, the bottom lining of shaft on wall
The side wall of madial wall and the bottom shaft housing is set in parallel, top lining of shaft madial wall and the top shaft housing
Side wall be set in parallel, the bottom lining of shaft and the top lining of shaft are set in equal thickness.
2. the blast-furnace shaft structure of taper mutation as claimed in claim 1, it is characterised in that top lining of shaft lateral wall pastes
In on the madial wall of the top shaft housing, the top lining of shaft madial wall and the top lining of shaft lateral wall phase
Mutually it be arranged in parallel, the top lining of shaft madial wall is set horizontal by the second shaft angle；Bottom lining of shaft lateral wall
It is covered on the madial wall of the bottom shaft housing, the bottom lining of shaft lateral wall and bottom lining of shaft inner side
Wall is arranged in parallel, and the bottom lining of shaft madial wall is set horizontal by the first shaft angle, in the bottom shaft
Thickness of the thickness with the top lining of shaft in the horizontal direction of lining in the horizontal direction is in identical setting.
3. the blast-furnace shaft structure of taper mutation as claimed in claim 1, it is characterised in that the furnace shell also includes the bottom
The furnace bosh housing being vertically arranged of the sealed bottom connection of shaft housing, the furnace lining also include being covered in the furnace bosh housing
Furnace bosh liner in side wall, the furnace bosh liner are set in equal thickness, in the thickness of the furnace bosh liner and the bottom 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, it is characterised in that furnace bosh liner lateral wall is covered on institute
State 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
Put.
5. the blast-furnace shaft structure of taper mutation as claimed in claim 3, it is characterised in that the furnace shell also includes the top
The furnace throat housing set straight up that the top of shaft housing is tightly connected, the furnace lining also include being covered on the furnace throat shell
Furnace throat liner in internal side wall, the furnace throat liner are set 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, it is characterised in that furnace throat liner lateral wall is covered on institute
On the madial wall for stating furnace throat housing, 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
Put.
7. the blast-furnace shaft structure of taper mutation as claimed in claim 5, it is characterised in that the furnace throat liner, the top
The lining of shaft, the bottom lining of shaft and the furnace bosh liner are made up of cooling device and refractory material unit.
8. the blast-furnace shaft structure of taper mutation as claimed in claim 1, it is characterised in that the height of the top shaft housing
For the 1/3 of the height of the bottom shaft housing.
9. the blast-furnace shaft structure of taper mutation as claimed in claim 1, it is characterised 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 |
|---|---|---|---|
| CN201711324399.9A CN107841584B (en) | 2017-12-13 | 2017-12-13 | Blast furnace body structure with variable taper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711324399.9A CN107841584B (en) | 2017-12-13 | 2017-12-13 | Blast furnace body structure with variable taper |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107841584A true CN107841584A (en) | 2018-03-27 |
| CN107841584B CN107841584B (en) | 2023-04-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711324399.9A Active CN107841584B (en) | 2017-12-13 | 2017-12-13 | Blast furnace body structure with variable taper |
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| JP2009221548A (en) * | 2008-03-17 | 2009-10-01 | Jfe Steel Corp | Method for operating blast furnace |
| CN202415578U (en) * | 2011-12-15 | 2012-09-05 | 马钢设计研究院有限责任公司 | Novel inner mould of blast furnace |
| CN204356346U (en) * | 2014-12-01 | 2015-05-27 | 中冶赛迪工程技术股份有限公司 | The blast furnace stack structure of syllogic |
| CN105907908A (en) * | 2016-06-15 | 2016-08-31 | 中冶华天南京工程技术有限公司 | Blast furnace thin-wall liner and installation method |
| CN106755680A (en) * | 2017-01-12 | 2017-05-31 | 安徽马钢工程技术集团有限公司 | A kind of middle-size and small-size heavy wall blast furnace furnace wall remodeling method and its structure |
| CN207760370U (en) * | 2017-12-13 | 2018-08-24 | 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 CN201711324399.9A patent/CN107841584B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009221548A (en) * | 2008-03-17 | 2009-10-01 | Jfe Steel Corp | Method for operating blast furnace |
| CN202415578U (en) * | 2011-12-15 | 2012-09-05 | 马钢设计研究院有限责任公司 | Novel inner mould of blast furnace |
| CN204356346U (en) * | 2014-12-01 | 2015-05-27 | 中冶赛迪工程技术股份有限公司 | The blast furnace stack structure of syllogic |
| CN105907908A (en) * | 2016-06-15 | 2016-08-31 | 中冶华天南京工程技术有限公司 | Blast furnace thin-wall liner and installation method |
| CN106755680A (en) * | 2017-01-12 | 2017-05-31 | 安徽马钢工程技术集团有限公司 | A kind of middle-size and small-size heavy wall blast furnace furnace wall remodeling method and its structure |
| CN207760370U (en) * | 2017-12-13 | 2018-08-24 | 中冶京诚工程技术有限公司 | The blast-furnace shaft structure of taper mutation |
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| 时彦林等: "《高炉炼铁工培训教程》", 31 July 2014, 冶金工业出版社 * |
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