CN109457074A - Blast Furnace Bottom pressure resistance design scheme - Google Patents
Blast Furnace Bottom pressure resistance design scheme Download PDFInfo
- Publication number
- CN109457074A CN109457074A CN201811576600.7A CN201811576600A CN109457074A CN 109457074 A CN109457074 A CN 109457074A CN 201811576600 A CN201811576600 A CN 201811576600A CN 109457074 A CN109457074 A CN 109457074A
- Authority
- CN
- China
- Prior art keywords
- furnace
- floor
- drop
- furnace bottom
- skirtboard
- 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.)
- Granted
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B7/00—Blast furnaces
- C21B7/02—Internal forms
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
- Blast Furnaces (AREA)
Abstract
Blast Furnace Bottom pressure resistance design scheme provided by the present invention, including hemispherical furnace bottom, half oblateness spherical surface furnace bottom and rigid furnace bottom, rigid furnace bottom further includes five kinds of specific structure types；It include the basic building blocks such as annular brace skirtboard (3), ribs (18), radiator window (4), annular base (5) in hemispherical furnace bottom and half oblateness spherical surface furnace bottom；Rigid furnace bottom is staggeredly to weld to be formed by huge bond strength using radial floor (11) or bar shaped floor (15) and last furnace shell (1), tightly last furnace shell " pulling " is allowed to go up, " floor " and drop-bottom is utilized to come into contact in a large area welding, the support force of " floor " is set to be not fully exerted, drop-bottom is set not generate " bulge ", any deformation such as " upwarping ", " as long as floor " width, THICKNESS CALCULATION is accurate, selection is suitable, firm welding, it is fully able to meet the resistance to pressure request of blast furnace, and manufacture difficulty is low, manufacturing cost is low, it is easy to implement.
Description
Technical field
It is the design scheme for improving Blast Furnace Bottom stress levels (ability) the present invention relates to Blast Furnace Bottom field.
Background technique
In China or even world wide, for smelting iron or producing the blast furnace of ferroalloy, its bottom construction is equal whether great or small
Be not designed according to pressure-resistant standard, therefore, many blast furnaces just will appear after producing a period of time " furnace bottom leakage coal gas ",
It the problems such as " furnace body rise ", " drop-bottom upwarps ", is typically necessary after the above problem occurs from outside and is administered, by outer
Although portion, which administers, is able to solve a part of problem (such as leakage coal gas problem), it is difficult to improve its stress levels, is difficult fundamentally
It solves the problems, such as, present invention particularly provides Blast Furnace Bottom pressure resistance design schemes thus, to ensure Blast Furnace Bottom safety.
It is inquired by domestic patent retrieval, retrieve several about improvement " drop-bottom upwarps " and administers " furnace bottom leakage coal gas "
Aspect, and the patent in terms of " drop-bottom sealing ", but belong to already technology, without too big innovation；Inspection
Rope to two about " two layers of furnace bottom " and " furnace bottom angle " use " fillet " design scheme, although compared with front into
Step, but still not enough pressure resistance and be essentially different with the present invention.Below by retrieve it is several than it is more typical about
Patent in terms of Blast Furnace Bottom describes respectively, in order to examine, screen.
1, the patent of " Blast Furnace Bottom structure " publication No. CN105063263A, mainly " furnace shell on the inside of " and " drop-bottom " it
Between encapsulation process and " furnace shell on the outside of " and concrete foundation between " sealing " processing, it is not difficult to find out that its drop-bottom of the program and
The furnace pressure thrust downward to furnace bottom can not be contained by belonging to " flexible connection " between furnace shell at all, therefore not withstand pressure, once furnace
It is more than " furnace shell self weight " (including the weight for the other equipment being attached on furnace shell) that interior pressure, which is increased to, " furnace shell " or is claimed
" furnace body " " will be pulled up " (i.e. so-called furnace bottom rising or furnace body go up in the industry).
2, " Blast Furnace Bottom " CN104313217A, the patent furnace bottom are provided with double-deck " sealing plate " (i.e. drop-bottom), but its " envelope
Junction weld seam is easy to be opened between plate " and furnace shell, because furnace shell can generate expansion with the raising of temperature and pressure, not only
Longitudinal dilatation but also lateral expansion or circumferential expansion, therefore, after furnace shell circumferential expansion " diameter just becomes larger ", once furnace shell is straight
Diameter becomes larger, and the weld seam of furnace shell and furnace bottom " sealing plate " is easy for being opened, and is easy for " furnace bottom leakage coal gas "；Due to the circumferential direction of furnace shell
Swell diameter becomes larger, and also can produce " disengaging " with furnace shell around the heat resistance concrete between two layers of drop-bottom, once it is detached from, not only
Its sealing performance disappears, and heat resistance concrete " core " also loses " rigidity " enabling capabilities of " the double-deck sealing plate " (i.e. drop-bottom) therewith
It loses, therefore the program is also not withstand pressure.
3, " a kind of Blast Furnace Bottom " CN107164590A, the patent upper CN105063263A, CN104313217A
It being improved, furnace bottom has also carried out " sealing " in addition to being provided with two layers of sealing plate, on the outside of furnace shell between concrete foundation and has handled, but
The structure is still not withstand pressure, especially large blast furnace when interior operating pressure is increased to 0.5Mpa, acted in furnace furnace bottom to
Lower thrust may will reach 5000 tons or more, it is therefore seen that the structure is still not pressure-resistant enough.
4, " blast furnace bottom structure " application No. is: 2015207269589, which adopts in the corner of furnace bottom and furnace shell
With arc connection (or fillet connection), increase foundation bolt and ribs outside, but drop-bottom be still it is flat,
Although pressure-resistant degree increases than several above, but still is not real pressure-resistance structure, once pressure rise is to certain
Its furnace bottom of degree can also see that exactly (habit claims in the industry for " furnace bottom rising ", " drop-bottom upwarps " from surrounding downwards " bulge " in appearance
" furnace bottom rising " or " drop-bottom upwarps ", caused by being actually " furnace body rise "), due to " furnace bottom rising " or " drop-bottom
Upwarp ", or even very thick foundation bolt can be broken, the report and article energy being pulled off in relation to " furnace bottom rising " foundation bolt
It is enough to be found on the magazine in terms of " ironmaking " or Ferrous Metallurgy.
For the deficiencies in the prior art representated by above-mentioned patent, the present invention is special to release Blast Furnace Bottom pressure resistance design scheme,
In order to which BF Design person and manager select, in order to improve the resistance to voltage levels of Blast Furnace Bottom, thoroughly avoid blast furnace " on drop-bottom
Stick up ", " furnace bottom leakage coal gas ", " furnace body rise " the problems such as generation, guarantee that blast furnace safety is long-lived, improve iron and steel enterprise's economy effect
Benefit.
Summary of the invention
The purpose of the present invention and technical assignment are inadequate for the universal not withstand pressure or pressure-resistant degree of existing Blast Furnace Bottom
Problem especially provides Blast Furnace Bottom pressure resistance design scheme, in order to improve the resistance to voltage levels of Blast Furnace Bottom, to prevent or thoroughly
The generation for the problems such as avoiding blast furnace " drop-bottom upwarps ", " furnace bottom leakage coal gas ", " furnace body rise " guarantees that blast furnace safety is long-lived, mentions
High steel enterprise economic benefit.
There are mainly three types of types for Blast Furnace Bottom pressure resistance design scheme of the present invention, and first is hemispherical furnace bottom design side
Case；Second be half it is oblate (it is circle that so-called " oblateness ", which is exactly in terms of depression angle, from left view, it is right regard, main view and
Posterior view point sees it is ellipse, and 1/2 is exactly that the horizontal of its " oblateness " cross-sectional cuts) spherical surface furnace bottom design scheme；Third is rigid
Property furnace bottom design scheme (its rigid bottom construction exactly utilizes " floor " and furnace shell staggeredly to weld and is formed by huge combination
Intensity holds furnace shell and is allowed to go up, and utilizes " floor " and drop-bottom to come into contact in a large area welding, obtains the support force of " floor "
To giving full play to, drop-bottom is made not generate " bulge or deformation "), there are five types of specific knots again in rigid furnace bottom design scheme
Configuration formula.
In the hemispherical furnace bottom design scheme include hemispherical furnace bottom, annular brace skirtboard, ribs, radiator window,
The basic building blocks such as annular base, foundation bolt and last furnace shell and concrete foundation；The lower part of foundation bolt is embedded in coagulation
In earth foundation, the upper surface of concrete foundation installs annular base, is welded above annular base with the lower end of annular brace skirtboard, ring
Shape supports the upper end of skirtboard and last furnace shell to weld；Below last furnace shell inside the surrounded space of annular brace skirtboard
It installs and welds hemispherical furnace bottom；There are several radiator windows on the circumference of annular brace skirtboard；In annular brace skirtboard outer circle one
Week it is also welded with several ribs down toward annular base up to last furnace shell, supports furnace equipment to means of complementary annular support skirtboard
(including furnace charge) weight.
The half oblateness spherical surface furnace bottom design includes half oblateness spherical surface furnace bottom, annular brace skirt
The basic building blocks such as plate, ribs, radiator window, annular base, foundation bolt and last furnace shell and concrete foundation；Foundation bolt
Lower part be embedded in concrete foundation, the upper surface of concrete foundation installs annular base, above annular base with annular brace
The lower end of skirtboard is welded, and the upper end of annular brace skirtboard and last furnace shell weld；In annular brace skirtboard below last furnace shell
It is installed inside surrounded space and welds half oblateness spherical surface furnace bottom；If having on the circumference of annular brace skirtboard
Dry radiator window；At annular brace skirtboard outer circle one week, several ribs are also welded with down toward annular base up to last furnace shell, to
Means of complementary annular supports skirtboard to support furnace equipment (including furnace charge) weight.
The rigid furnace bottom design scheme first is that, drop-bottom is mounted in concrete foundation, is welded on drop-bottom
Connect radial floor, annular plate, annular plate erecting and welding in the central area of drop-bottom, around weld radial rib
Plate；Last furnace shell is installed according to arrow instruction direction according to furnace shell installation site label, by last furnace shell lower part when installation
Cutting socket is directed at the radial floor corresponding to it one by one；First last furnace shell can also be welded on drop-bottom, then by
It is a that radial floor is penetrated into firm welding again from the cutting socket that last furnace shell lower part is reserved in advance.
The rigid furnace bottom design scheme second is that, drop-bottom is mounted in concrete foundation, is welded on drop-bottom
Radial floor is connect, the intersection point of radial floor can be at the center of drop-bottom, if in order to which convenient welding can also be
Dislocation places a rod iron at center, and first last furnace shell can also be welded on drop-bottom, then one by one will be radial
Floor penetrates firm welding again from the cutting socket that last furnace shell lower part is reserved in advance.
The rigid furnace bottom design scheme third is that, drop-bottom is mounted in concrete foundation, on drop-bottom put down
Last furnace shell, can also first be welded on drop-bottom by row welding bar shaped floor, then one by one by bar shaped floor from last furnace shell
Firm welding again is penetrated in the cutting socket that lower part is reserved in advance.
The rigid furnace bottom design scheme fourth is that, on drop-bottom simultaneously in length and breadth weld bar shaped floor, be allowed to be formed
" network ", bar shaped floor can be taken in intersection notch, then the method erecting and welding by mutually fastening；It can also be with
First last furnace shell is welded on drop-bottom, then one by one reserves the bar shaped floor in a certain orientation in advance from last furnace shell lower part
Cutting socket in penetrate and weld, the bar shaped floor in another orientation is then cut into fritter according to size of mesh opening and is welded again
It connects.
The rigid furnace bottom design scheme fifth is that, radial floor or radial rib can be first welded on drop-bottom
Then drop-bottom is included by the combination of plate and annular plate or full bar shaped floor or " reticular structure " that is combined by bar shaped floor
" floor " in turn, " floor " is placed on one side in concrete foundation together, forms " floor " in following pressure-resistant bottom construction,
Then strengthens angle is welded around last furnace shell to be allowed to be firmly combined with drop-bottom.
Radial floor, annular plate, the material of bar shaped floor, thickness, width (or height) and the floor
Layout density needs the size according to specific blast furnace, the height of furnace pressure, hearth area and furnace bottom stress condition to calculate true
It is fixed.
Inside the hemispherical furnace bottom and half oblateness spherical surface furnace bottom, including " floor " below drop-bottom
It needs to pour inside furnace shell above its drop-bottom, and between the floor and floor of the rigid furnace bottom of " floor " on drop-bottom
Heat resistance concrete is built, upper surface is levelling according to designed elevation progress, and water cooling tube or wind are then installed on screed-coat
Cold pipe, and installation FlexbleJoint is required at the both ends of every root canal, to meet the needs of pressure resistance, harmomegathus and sealing, in water
Between cold pipe or forced air cooled tube and surrounding pours the refractory material of good heat conductivity, and carries out again according to designed elevation to upper surface
It is secondary levelling, in order to masonry heater bottom carbon brick；Rigid furnace bottom must also first open grouting before pouring heat resistance concrete on drop-bottom
Grout pipe is simultaneously welded in hole, using grout pipe to grout filling is carried out below drop-bottom between concrete foundation, waits grouting materials solidifying
Cut off grout pipe after Gu, then closure grouting hole and firm welding pour heat resistance concrete again and carry out levelling, then looking for again
Water cooling tube or forced air cooled tube are installed above leveling, and require installation FlexbleJoint at the both ends of every root canal, it is resistance to meet
The needs of pressure, harmomegathus and sealing, finally again between water cooling tube or forced air cooled tube and around pour the fire proofed wood of good heat conductivity
Material, and it is levelling again to upper surface progress according to designed elevation, in order to masonry heater bottom carbon brick.
Blast Furnace Bottom pressure resistance design scheme of the invention compared with prior art, has the advantages that following prominent and beneficial effect
Fruit: being somebody's turn to do hemispherical furnace bottom in " scheme " is to belong to the best structure of pressure-resistant degree；Half is oblate (so-called " oblateness " just
It is round that be in terms of depression angle be, be in terms of left view, right view, main view and posterior view point it is oval, 1/2 is exactly its " oblateness "
Level cross-sectional cut) spherical surface furnace bottom is also a kind of extraordinary pressure-resistance structure of pressure-resistant degree；In addition the rigid bottom construction of five kinds
Can utilize " floor " and furnace shell staggeredly to weld and be formed by huge bond strength, tightly hold furnace shell be allowed to cannot on
Rise, utilizes " floor " and drop-bottom to come into contact in a large area welding, so that the support force of " floor " is not fully exerted, produce drop-bottom not
Any deformations such as raw " bulges " is fully able to as long as by its " floor " width, THICKNESS CALCULATION is accurate, selection is suitable, firm welding
Meet the resistance to pressure request of blast furnace, and manufacture difficulty is low, manufacturing cost is low, easy to implement.As long as in short, according to skill of the present invention
Art scheme is implemented, it will be able to obtain the Blast Furnace Bottom of pressure resistance design, it will be able to blast furnace be made thoroughly to avoid or prevent " on drop-bottom
Stick up ", " furnace bottom leakage coal gas ", " furnace body rise " the problems such as generation can be improved steel thereby it is ensured that blast furnace safety is long-lived
Iron Business Economic Benefit.
Detailed description of the invention
Fig. 1 is hemispherical furnace bottom diagrammatic cross-section of the present invention；
Fig. 2 is half oblateness spherical surface furnace bottom diagrammatic cross-section of the present invention；
Fig. 3 is the rigid furnace bottom of " annular plate and radial floor " combined application of the invention and the signal of last furnace shell assembling
Figure；
Fig. 4 is rigid furnace bottom floor map (the i.e. A-A in Fig. 3 of " annular plate and radial floor " combined application of the invention
View)；
Fig. 5 is the floor map of the present invention " radial floor center intersection " formula rigidity furnace bottom；
Fig. 6 is the rigid furnace bottom floor map of complete " bar shaped floor " of the invention；
Fig. 7 is the floor map that the present invention is made of " network " rigid furnace bottom " bar shaped floor "；
Fig. 8 is the present invention for " annular plate and radiation floor " or complete " bar shaped floor " or forms " grid knot by " bar shaped floor "
Rigid bottom construction schematic diagram of its " floor " of structure " arrangement below drop-bottom.
Description of symbols: 1, last furnace shell in figure, 2, hemispherical furnace bottom, 3, annular brace skirtboard, 4, radiator window, 5, ring
Shape pedestal, 6, foundation bolt, 7, concrete furnace foundation, 8, half oblateness spherical surface furnace bottom, 9, cutting socket, 10, drop-bottom,
11, radial floor, 12, annular plate, 13, bolt hole, 14, furnace shell installation site label (double dot dash line in figure), 15, bar shaped
Floor, 16, heat resistance concrete, 17, strengthens angle, 18, ribs, " ↓ " indicates that furnace shell is installed downwards in Fig. 3.
Specific embodiment
Referring to specification and attached drawing and in conjunction with specific embodiments, Blast Furnace Bottom pressure resistance design scheme of the invention is made following
It explains in detail.
There are three types of types for the specific embodiment of the Blast Furnace Bottom pressure resistance design scheme, first is that hemispherical furnace bottom design side
Case；Second is that half it is oblate (it is circle that so-called " oblateness ", which is exactly in terms of depression angle, from left view, it is right regard, main view and after
Angle sees it is ellipse, and 1/2 is exactly that the horizontal of its " oblateness " cross-sectional cuts) spherical surface furnace bottom design scheme；Third is that rigid furnace
(its rigid furnace bottom exactly utilizes " floor " and furnace shell staggeredly to weld and is formed by huge bond strength pulling bottom design scheme
Furnace shell is allowed to go up, and utilizes " floor " and drop-bottom to come into contact in a large area welding, sends out the support force of " floor " sufficiently
It waves, drop-bottom is made not generate " bulge or deformation ").There are five types of specific structure types again in rigid furnace bottom design scheme.
In the hemispherical furnace bottom design scheme, including hemispherical furnace bottom (2), annular brace skirtboard (3), ribs
(18), radiator window (4), annular base (5), foundation bolt (6) and the basic structure such as last furnace shell (1) and concrete foundation (7)
Part；The lower part of foundation bolt (6) is embedded in concrete foundation (7), and the upper surface of concrete foundation (7) installs annular base (5),
Annular base (5) is welded with the lower end of annular brace skirtboard (3) above, the upper end and last furnace shell (1) of annular brace skirtboard (3)
Welding；It is installed inside the surrounded space of annular brace skirtboard (3) below in last furnace shell (1) and welds hemispherical furnace bottom
(2)；There are several radiator windows (4) on the circumference of annular brace skirtboard (3)；It is upper supreme annular brace skirtboard (3) outer circle one week
Furnace furnace shell (1) is also welded with several ribs (18) down toward annular base (5), supports furnace body to means of complementary annular support skirtboard (3)
Equipment (including furnace charge) weight.
In the half oblateness spherical surface furnace bottom design scheme, including half oblateness spherical surface furnace bottom
(8), annular brace skirtboard (3), ribs (18), radiator window (4), annular base (5), foundation bolt (6) and last furnace shell
(1) and the basic building blocks such as concrete foundation (7)；The lower part of foundation bolt (6) is embedded in concrete foundation (7), coagulation soil matrix
The upper surface of plinth (7) installs annular base (5), and annular base (5) is welded with the lower end of annular brace skirtboard (3) above, annular branch
The upper end and last furnace shell (1) for supportting skirtboard (3) are welded；It is surrounded in annular brace skirtboard (3) below in last furnace shell (1)
It is installed inside space and welds half oblateness spherical surface furnace bottom (8)；There is several dissipate on the circumference of annular brace skirtboard (3)
Hot window (4)；Annular brace skirtboard (3) outer circle one week, also it is welded with up to last furnace shell (1) down toward annular base (5) several
Stake rib (18) supports furnace equipment (including furnace charge) weight to means of complementary annular support skirtboard (3).
The specific constructive form of the rigid furnace bottom design scheme first is that, drop-bottom (10) is mounted on concrete foundation
(7) on, radial floor (11), annular plate (12) are welded above in drop-bottom (10), annular plate (12) erecting and welding exists
The central area of drop-bottom (10), around weld radial floor (11)；According to furnace shell installation site label (14) according to arrow
The cutting socket (9) of last furnace shell (1) lower part is directed at its institute when installation by head instruction direction installation last furnace shell (1) one by one
Corresponding radial floor (11)；First last furnace shell (1) can also be welded on drop-bottom (10), it then one by one will be radial
Floor (11) penetrates firm welding again from the cutting socket (9) that last furnace shell (1) lower part is reserved in advance.
The rigid furnace bottom design scheme second is that, drop-bottom (10) is mounted on concrete foundation (7), in drop-bottom
(10) weld above radial floor (11), the intersection point of radial floor (11) can at the center of drop-bottom (10), if
It can also be misplaced for convenient welding or place a rod iron at center, can also be first welded on last furnace shell (1)
On drop-bottom (10), then one by one by radial floor (11) from the cutting socket (9) that last furnace shell (1) lower part is reserved in advance
Penetrate firm welding again.
The specific constructive form of the rigid furnace bottom design scheme third is that, drop-bottom (10) is mounted on concrete foundation
(7) on, in drop-bottom (10) welding bar shaped floor (15) in parallel above, last furnace shell (1) first can also be welded on drop-bottom
(10) on, bar shaped floor (15) is penetrated one by one from the cutting socket (9) that last furnace shell (1) lower part is reserved in advance then and is welded again
It connects securely.
The specific constructive form of the rigid furnace bottom design scheme fourth is that, on drop-bottom (10) simultaneously weld in length and breadth
Bar shaped floor (15), is allowed to be formed " network ", and bar shaped floor (15) can be taken in intersection notch, then by mutual
The method erecting and welding of fastening；First last furnace shell (1) can also be welded on drop-bottom (10), then one by one by a certain orientation
Bar shaped floor (15) penetrate and weld from the cutting socket (9) that last furnace shell lower part is reserved in advance, then by another orientation
Bar shaped floor (15) be cut into fritter according to size of mesh opening and welded again.
The specific constructive form of the rigid furnace bottom design scheme fifth is that, can first weld and put on drop-bottom (10)
Penetrate combination or the full bar shaped floor (15) or by bar shaped floor of shape floor (11) or radial floor (11) and annular plate (12)
(15) " reticular structure " combined, then by drop-bottom (10) include " floor " together in turn, " floor " is placed on one side mixed
On solidifying earth foundation (7), " floor " is formed in following pressure-resistant bottom construction, strengthens angle is then welded around last furnace shell (1)
(17) it is allowed to be firmly combined with drop-bottom (10).
The radial floor (11), annular plate (12), the material of bar shaped floor (15), thickness, width are (or high
Degree) and floor layout density, need the size according to specific blast furnace, the height of furnace pressure, hearth area and furnace bottom stress
Situation, which calculates, to be determined.
Inside the hemispherical furnace bottom and half oblateness spherical surface furnace bottom, including " floor " below drop-bottom
It is also required to inside furnace shell above its drop-bottom, and between the floor and floor of the rigid furnace bottom of " floor " on drop-bottom
Pour heat resistance concrete, upper surface to be carried out according to designed elevation it is levelling, then installed on screed-coat water cooling tube or
Forced air cooled tube, and installation FlexbleJoint is required at the both ends of every root canal, to meet the needs of pressure resistance, harmomegathus and sealing,
Between water cooling tube or forced air cooled tube and surrounding pours the refractory material of good heat conductivity, and carries out according to designed elevation to upper surface
It is levelling again, in order to masonry heater bottom carbon brick；Rigid furnace bottom must also first open filling before pouring heat resistance concrete on drop-bottom
It starches hole and welds grout pipe and wait grouting materials using grout pipe to grout filling is carried out below drop-bottom between concrete foundation
Grout pipe, closure grouting hole and firm welding are cut off after solidification, are then poured heat resistance concrete again and are carried out according to designed elevation
It is levelling, then water cooling tube or forced air cooled tube are installed on screed-coat again, and require installation ripple at the both ends of every root canal
Compensator, with meet pressure resistance, harmomegathus and sealing needs, finally again between water cooling tube or forced air cooled tube and around pour it is thermally conductive
The good refractory material of performance, and it is levelling again to upper surface progress according to designed elevation, in order to masonry heater bottom carbon brick.
Seven kinds of preferable specific embodiments of three classes of the present invention are described in detail above.Either using hemispherical furnace bottom or
Any one in half oblateness spherical surface furnace bottom or rigid furnace bottom, or the certain changes carried out in its basic configuration
Shape, as long as using being similarly used for improving Blast Furnace Bottom rigidity with this patent description or can be improved the side of furnace bottom pressure resistance degree
Case should belong to the scope of protection of the patent of the present invention；And those of ordinary skill in the art are without paying creative labor just
In addition make many modifications and variations or those skilled in the art according to the present invention can be conceived according to structure of the invention
Think the obtained technical solution of experiment for passing through logic analysis, reasoning either limited times on the basis of the prior art,
It should belong within protection scope determined by the present invention.
Claims (10)
1. Blast Furnace Bottom pressure resistance design scheme, it is characterised in that: it includes hemispherical furnace bottom design scheme, half oblateness
(so-called " oblateness " is exactly in terms of depression angle is it is round, in terms of left view, right view, main view and posterior view point be it is oval, 1/
2 be exactly that the level of its " oblateness " cross-sectional is cut) spherical surface furnace bottom design scheme and rigid furnace bottom design scheme, are designed in rigid furnace bottom
It further include five kinds of specific structure types in scheme.
2. Blast Furnace Bottom pressure resistance design scheme according to claim 1, it is characterised in that: set in the hemispherical furnace bottom
Its hemispherical furnace bottom (2), annular brace skirtboard (3), ribs (18), radiator window (4), annular base (5), footing in meter scheme
Bolt (6) and last furnace shell (1) and concrete foundation (7) are basic building block；The lower part of foundation bolt (6) is embedded in concrete
In basic (7), the upper surface of concrete foundation (7) installs annular base (5), annular base (5) above with annular brace skirtboard (3)
Lower end welding, the upper end of annular brace skirtboard (3) and last furnace shell (1) are welded；In last furnace shell (1) below in annular brace
It is installed inside the surrounded space of skirtboard (3) and welds hemispherical furnace bottom (2)；Have on the circumference of annular brace skirtboard (3)
Several radiator windows (4)；Annular brace skirtboard (3) outer circle one week, also it is welded with up to last furnace shell (1) down toward annular base (5)
Several ribs (18) support furnace equipment (including furnace charge) weight to means of complementary annular support skirtboard (3).
3. Blast Furnace Bottom pressure resistance design scheme according to claim 1, it is characterised in that: oblate in the half
Its half oblateness spherical surface furnace bottom (8) in shape spherical surface furnace bottom design scheme, ribs (18), dissipates annular brace skirtboard (3)
Hot window (4), annular base (5), foundation bolt (6) and last furnace shell (1) and concrete foundation (7) are basic building block；Footing
The lower part of bolt (6) is embedded in concrete foundation (7), and the upper surface of concrete foundation (7) installs annular base (5), annular bottom
Seat (5) is welded with the lower end of annular brace skirtboard (3) above, and the upper end and last furnace shell (1) of annular brace skirtboard (3) are welded；
It is installed inside the surrounded space of annular brace skirtboard (3) below in last furnace shell (1) and welds half oblateness
Spherical surface furnace bottom (8)；There are several radiator windows (4) on the circumference of annular brace skirtboard (3)；In annular brace skirtboard (3) outer circle one
Week several ribs (18) are also welded with down toward annular base (5) up to last furnace shell (1), support skirtboard (3) to means of complementary annular
Support furnace equipment (including furnace charge) weight.
4. Blast Furnace Bottom pressure resistance design scheme according to claim 1, it is characterised in that: the rigid furnace bottom design side
Case first is that, drop-bottom (10) is mounted on concrete foundation (7), drop-bottom (10) weld above radial floor (11),
Annular plate (12), annular plate (12) erecting and welding in the central area of drop-bottom (10), around weld radial floor
(11)；According to furnace shell installation site label (14) according to arrow instruction direction installation last furnace shell (1), by State of Blast Furnace when installation
The cutting socket (9) of shell (1) lower part is directed at the radial floor (11) corresponding to it one by one；It can also be first by last furnace shell (1)
It is welded on drop-bottom (10), the cutting for then one by one reserving radial floor (11) in advance from last furnace shell (1) lower part is inserted
Firm welding again is penetrated in mouth (9).
5. Blast Furnace Bottom pressure resistance design scheme according to claim 1, it is characterised in that: the rigid furnace bottom design side
Case second is that, drop-bottom (10) is mounted on concrete foundation (7), weld radial floor (11) above in drop-bottom (10),
The intersection point of its radial floor (11) can at the center of drop-bottom (10), if can also be misplaced for convenient welding or
Person places a rod iron at center, and first last furnace shell (1) can also be welded on drop-bottom (10), then one by one will be radial
Floor (11) penetrates firm welding again from the cutting socket (9) that last furnace shell (1) lower part is reserved in advance.
6. Blast Furnace Bottom pressure resistance design scheme according to claim 1, it is characterised in that: the rigid furnace bottom design side
Case third is that, drop-bottom (10) is mounted on concrete foundation (7), drop-bottom (10) above in parallel welding bar shaped floor
(15), first last furnace shell (1) can also be welded on drop-bottom (10), then one by one by bar shaped floor (15) from last furnace shell
(1) firm welding again is penetrated in the cutting socket (9) that lower part is reserved in advance.
7. Blast Furnace Bottom pressure resistance design scheme according to claim 1, it is characterised in that: the rigid furnace bottom design side
The four of case, drop-bottom (10) are mounted on concrete foundation (7), weld bar shaped floor in length and breadth simultaneously on drop-bottom (10)
(15), it is allowed to be formed " network ", bar shaped floor (15) can be taken in intersection notch, then the side by mutually fastening
Method installation；First last furnace shell (1) can also be welded on drop-bottom (10), then one by one by the bar shaped floor in a certain orientation
(15) it penetrates and welds from the cutting socket (9) that last furnace shell lower part is reserved in advance, then by the bar shaped floor in another orientation
(15) fritter is cut into according to size of mesh opening to be welded again.
8. Blast Furnace Bottom pressure resistance design scheme according to claim 1, it is characterised in that: the rigid furnace bottom design side
The five of case can first weld radial floor (11) or radial floor (11) and annular plate (12) on drop-bottom (10)
Drop-bottom (10) are included then " rib by combination or full bar shaped floor (15) or " reticular structure " that is combined by bar shaped floor (15)
In turn, " floor " is placed on one side on concrete foundation (7) together for plate ", forms " floor " in following pressure-resistant bottom construction,
Then strengthens angle (17) are welded around last furnace shell (1) to be allowed to be firmly combined with drop-bottom (10).
9. Blast Furnace Bottom pressure resistance design scheme according to claim 4, it is characterised in that: the radial floor
(11), annular plate (12), the material of bar shaped floor (15), thickness, width (or height) and floor layout density, need
It to be calculated and be determined according to the size of specific blast furnace, the height of furnace pressure, hearth area and furnace bottom stress condition.
10. Blast Furnace Bottom pressure resistance design scheme described in -8 according to claim 1, it is characterised in that: the hemispherical furnace bottom
Inside half oblateness spherical surface furnace bottom, including " floor " inside the furnace shell above its drop-bottom below drop-bottom,
And need to pour heat resistance concrete between its floor and floor of " floor " on drop-bottom, and according to designed elevation to upper
Surface will carry out levelling, water cooling tube or forced air cooled tube then be installed on screed-coat, and require at the both ends of every root canal
FlexbleJoint is installed, to meet the needs of pressure resistance, harmomegathus and sealing, between water cooling tube or forced air cooled tube and around pour and lead
The refractory material of good in thermal property, and it is levelling again to upper surface progress according to designed elevation, in order to masonry heater bottom carbon brick；Rigidity
Furnace bottom first must also open grout hole on drop-bottom and weld grout pipe, using grout pipe to furnace before pouring heat resistance concrete
Grout filling is carried out below bottom plate between concrete foundation, cuts off grout pipe after waiting grouting materials to solidify, closure grouting hole is simultaneously welded
Connect securely, then pour again heat resistance concrete and according to designed elevation carry out it is levelling, then water cooling is installed on screed-coat again
Pipe or forced air cooled tube, and installation FlexbleJoint is required at the both ends of every root canal, to meet the need of pressure resistance, harmomegathus and sealing
Want, finally again between water cooling tube or forced air cooled tube and around pour the refractory material of good heat conductivity, and according to designed elevation
It is levelling again to upper surface progress, in order to masonry heater bottom carbon brick.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811576600.7A CN109457074B (en) | 2018-12-23 | 2018-12-23 | Blast furnace bottom pressure-resistant design scheme |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811576600.7A CN109457074B (en) | 2018-12-23 | 2018-12-23 | Blast furnace bottom pressure-resistant design scheme |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109457074A true CN109457074A (en) | 2019-03-12 |
| CN109457074B CN109457074B (en) | 2020-09-11 |
Family
ID=65614366
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811576600.7A Active CN109457074B (en) | 2018-12-23 | 2018-12-23 | Blast furnace bottom pressure-resistant design scheme |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109457074B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112304504A (en) * | 2020-11-05 | 2021-02-02 | 新疆八一钢铁股份有限公司 | Method for large-scale blast furnace blow-in airtight and pressure-resistant test |
| CN114774607A (en) * | 2022-04-24 | 2022-07-22 | 北京首钢建设集团有限公司 | Hot blast stove bottom structure and welding method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59179705A (en) * | 1983-03-29 | 1984-10-12 | Nippon Steel Corp | Method of protecting blast furnace bottom |
| JPH0625722A (en) * | 1992-07-10 | 1994-02-01 | Nisshin Steel Co Ltd | Method for protecting furnace bottom surface in blast furnace |
| KR20040021201A (en) * | 2002-09-03 | 2004-03-10 | 주식회사 포스코 | Blast furnace bottom plate for anti-gas leak |
| CN203373359U (en) * | 2013-05-22 | 2014-01-01 | 中冶南方工程技术有限公司 | Furnace bottom structure of blast furnace |
| CN104313217A (en) * | 2014-11-26 | 2015-01-28 | 中冶华天工程技术有限公司 | Blast furnace bottom |
| CN204237807U (en) * | 2014-11-26 | 2015-04-01 | 中冶华天工程技术有限公司 | Blast furnace bottom |
-
2018
- 2018-12-23 CN CN201811576600.7A patent/CN109457074B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59179705A (en) * | 1983-03-29 | 1984-10-12 | Nippon Steel Corp | Method of protecting blast furnace bottom |
| JPH0625722A (en) * | 1992-07-10 | 1994-02-01 | Nisshin Steel Co Ltd | Method for protecting furnace bottom surface in blast furnace |
| KR20040021201A (en) * | 2002-09-03 | 2004-03-10 | 주식회사 포스코 | Blast furnace bottom plate for anti-gas leak |
| CN203373359U (en) * | 2013-05-22 | 2014-01-01 | 中冶南方工程技术有限公司 | Furnace bottom structure of blast furnace |
| CN104313217A (en) * | 2014-11-26 | 2015-01-28 | 中冶华天工程技术有限公司 | Blast furnace bottom |
| CN204237807U (en) * | 2014-11-26 | 2015-04-01 | 中冶华天工程技术有限公司 | Blast furnace bottom |
Non-Patent Citations (1)
| Title |
|---|
| 董一诚: "捷尔任斯基工厂高炉炉底的改建", 《钢铁》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112304504A (en) * | 2020-11-05 | 2021-02-02 | 新疆八一钢铁股份有限公司 | Method for large-scale blast furnace blow-in airtight and pressure-resistant test |
| CN114774607A (en) * | 2022-04-24 | 2022-07-22 | 北京首钢建设集团有限公司 | Hot blast stove bottom structure and welding method thereof |
| CN114774607B (en) * | 2022-04-24 | 2023-09-15 | 北京首钢建设集团有限公司 | Furnace bottom structure of hot blast furnace and welding method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109457074B (en) | 2020-09-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109457074A (en) | Blast Furnace Bottom pressure resistance design scheme | |
| CN203772008U (en) | Novel submerged arc furnace lining | |
| CN104313217B (en) | Blast furnace bottom | |
| CN203347203U (en) | Multi-functional super-thick bulked concrete steel tube support system | |
| CN205134742U (en) | Multilayer fire -proof material's novel steel reinforced concrete fire prevention post | |
| CN209040863U (en) | A kind of tunnel waterproofing construction | |
| CN111155536A (en) | Foundation pit enclosure structure adopting internally-filled reinforced concrete steel pipe | |
| CN207228347U (en) | A kind of connector, prefabricated component and prefabricated component and the connecting node on basis | |
| CN207863464U (en) | A kind of new take-off seam aluminum alloy pattern plate | |
| CN205347496U (en) | Environment -friendly high life RH refining furnace dip pipe | |
| CN210848185U (en) | Forging heating furnace | |
| CN210194879U (en) | Supporting framework and supporting frame | |
| CN105863073B (en) | Coupled column and base node structure and its construction method with horizontal anti-seismic performance | |
| CN204265691U (en) | Annular air duct structure and coke dry quenching furnace | |
| CN106639072A (en) | Assembly type thermal-insulating wall body construction structure | |
| CN208563659U (en) | Concrete-filled steel tube shear wall | |
| CN208088290U (en) | Organizational pile foundation structure | |
| CN209568058U (en) | A kind of casting of dry coke quenching builds mixed structure for the cooling segment structure of furnace body | |
| CN205843373U (en) | A kind of bottom construction of fused magnesite electric melting furnace | |
| CN205803516U (en) | Blast furnace hermetically sealed high intensity furnace bottom cooling structure | |
| CN110748087A (en) | Connecting structure of steel pipe column and basement reverse construction method steel stand column | |
| CN105880546B (en) | It is a kind of that there is the ladle for preventing moment rupture leakage | |
| CN206408789U (en) | A kind of inclined hole grouting shear wall of T-shaped | |
| CN211717166U (en) | Low-cost ferroniobium reaction furnace | |
| CN209068998U (en) | A kind of kiln top suspended structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |