CN107805680A - A kind of blast furnace ironmaking scale hooper - Google Patents
A kind of blast furnace ironmaking scale hooper Download PDFInfo
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- CN107805680A CN107805680A CN201711224777.6A CN201711224777A CN107805680A CN 107805680 A CN107805680 A CN 107805680A CN 201711224777 A CN201711224777 A CN 201711224777A CN 107805680 A CN107805680 A CN 107805680A
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- scale hooper
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- charging aperture
- feed zone
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B7/00—Blast furnaces
- C21B7/24—Test rods or other checking devices
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Abstract
A kind of blast furnace ironmaking scale hooper, belongs to technical field of blast furnace ironmaking.Scale hooper feed zone is connected with scale hooper blowing section, and scale hooper feed zone is provided with first charging aperture and second charging aperture, and two charging apertures are respectively arranged below with Self-protecting abrasion-proof structure.Self-protecting abrasion-proof structure is arranged on the working face that scale hooper is worn by blanking impact and stream, including buildup platform and material baffle structure two ways.Scale hooper feed zone is connected or welded by threaded fastener with scale hooper blowing section.Advantage is that scale hooper total height is low, reduces blanking is poor, good economy performance service life is long, maintenance is small etc..
Description
Technical field
The invention belongs to technical field of blast furnace ironmaking, specifically provides a kind of blast furnace ironmaking scale hooper.
Background technology
Existing blast furnace ironmaking scale hooper can be divided into scattered scale hooper by weighing mode and concentrate scale hooper, scale hooper feed zone
Should possess enough dischargeable capacitys, meet the shelf appeal of material to be weighed, feed zone cross sectional shape is typically having rectangle (including just
It is square) combination in section, trapezoid cross section, circular cross-section or any two kinds of sections；Cone is set to ensure that blowing is smooth, below scale hooper
Shape blowing section, blowing section are usually terrace with edge or round platform, and the angle of its working face determines according to the physical characteristic of material, typically not small
In 50 °, scale hooper laid inside abrasion-proof backing block；Blowing section is justified with can also using old name for the Arabian countries in the Middle East and hemispherical dome, because manufacture is complicated,
When laying abrasion-proof backing block, liner plate is irregular, species is more, therefore is seldom used in designing, only under the process conditions of particular/special requirement
(such as improvement project) is applied.The weighing bucket structure concentric into and out of material mouth is most simple, is preferentially used in design, but actually should
It is also very common into and out of material mouth decentraction with the middle demand according to technology arrangement.Newly-built blast furnace generally uses both at home and abroad at present
The weighing mode of electronic scale pressure head, each scale hooper set 3-4 group sensor pressure heads.
Most distinct issues are exactly the liner plate life-span to existing scale hooper in use.Reason is：
1. the diversity of material：Material mainly includes in scale hooper：Coke, sintering deposit, pellet, lump ore, manganese ore, vanadium titanium
Ore deposit, lime stone, fluorite etc.；
2. material is aqueous：The coke of non-dry coke quenching technique productions and landing Jiao contain certain moisture, and ore is after ore dressing
Contain certain moisture.The phenomenon that material is aqueous to occur materials from bonding and winter freezes, produces scale hooper blowing and has some setbacks；
3. start charging, scale hooper be empty material state, and the liner plate in material impact scale hooper, scale hooper is highly bigger,
Impact wear is more serious；
4. due to environmental requirement, scale hooper is full-closed structure, and lining plate replacing is inconvenient；
5. as blast furnace maximizes, it is larger to cross doses.
Scale hooper liner material quality selection hardly possible, short life, replacing inconvenience for these reasons.
In view of the above-mentioned problems, current solution mainly has：
(1) the problems such as being directed to the diversity of material, crossing doses and be aqueous is currently without more preferable method, conventional abrasion-proof backing block
(engineering is conventional, cost performance is rational) is difficult to meet above-mentioned requirements simultaneously, can only be according to process conditions using unlike material
Liner plate, liner plate species are more；
(2) it is exactly to reduce scale hooper height for the most directly effective method of material impact, it is poor particularly reduces blanking；Such as
It is the problem of requiring study that what, which reduces the height of scale hooper, reduces blanking difference,.
The volume of scale hooper and area and highly directly proportional, therefore lower height, can be real by way of increasing area
It is existing.The result of study of existing typical scale hooper is shown：Due to by technological process, Process configuration and the physics for entering stove crude fuel
The restriction of the conditions such as parameter, there is following deficiency simply by increasing feed throat area to reduce the mode of scale hooper height：
1. geometric volume increases, capacity utilization is relatively low；
2. surface of shell product increase, the increase of abrasion-proof backing block area, weight of equipment and investment increase；
3. taper blowing section highly increases, because the abrasion of bevel phase abrasion-proof backing block is serious compared with straight section, abrasion-proof backing block is caused
Service life reduction；
4. scale hooper weight and profile increase, cause civil engineering load increase, technology arrangement difficulty the problems such as；
Increase scale hooper dischargeable capacity most effective way is under conditions of the charging aperture cross dimensions of optimization at present, is led to
Cross what increase scale hooper was highly realized.
The content of the invention
It is an object of the invention to provide a kind of blast furnace ironmaking scale hooper, solves and reduces blanking impact, reduction stream connects
The problem of contacting surface is worn.Serve blast furnace ironmaking ore deposit Jiao groove and feeding system；Modes are weighed suitable for scattered and two kinds of concentration, no
Blast furnace ironmaking is only applicable to, is also applied for non-blast furnace ironmaking (such as：Melting and reducing) etc. set the other technologies field of scale hooper.
A kind of blast furnace ironmaking scale hooper, is divided into two parts by structure.Part I is using Self-protecting abrasion-proof structure
Scale hooper feed zone 1；Part II is scale hooper blowing section 2.Scale hooper feed zone 1 is connected with scale hooper blowing section 2, scale hooper
Feed zone 1 is provided with first charging aperture 3 and second charging aperture 4, and two charging apertures are respectively arranged below with Self-protecting abrasion-proof structure
5.This Self-protecting abrasion-proof structure 5 is to be hit and stream wear surface setting buildup platform, passing through the thing accumulated in buildup platform
Material protection mother metal, which reduces, to be washed away, reduces abrasion；Scale hooper blowing section 2 possesses the function of conventional scale hooper.
Scale hooper feed zone 1 is funnel type structure, and funnel section configuration is the one of rectangle, trapezoidal, circular and polygon etc.
The combination of kind or two of which.
Scale hooper blowing section 2 is connected with scale hooper feed zone 1 above, is connected below with scale hooper blowing gate；Scale hooper
Blowing section 2 using terrace with edge, round platform, old name for the Arabian countries in the Middle East circle or hemispherical dome structure.Scale hooper blowing section 2 no matter which kind of structure, its
20-80 ° of the angle [alpha] span of working face.
Self-protecting abrasion-proof structure 5 is arranged on the working face that scale hooper is worn by blanking impact and stream, including buildup
Platform 7 and the two ways of material baffle structure 9.Directly impact in blanking, the position of stream contact wear constructs rational buildup platform, is formed
Buildup space, the material accumulated in buildup space form stable " backing strap ", and blanking is smooth when stream passes through backing strap.It is right
Thousands of tons of is reached in the daily mistake doses of each scale hooper of large blast furnace, concentrates scale hooper to be even up to ten thousand tons, therefore liner plate life-span
It is very crucial, the service life of conventional liner material quality is undesirable.So-called Self-protecting abrasion-proof structure 5 is set in wear surface
Put buildup platform, form buildup space, " backing strap " is formed by the material accumulated in buildup platform, designed by rational abrasion-proof structure
Ensure " backing strap " thickness and stability, stream by when " backing strap " can isolate material with weigh headwall, substitute abrasion-proof backing block rise
To the purpose of effective protection mother metal.
A kind of preparation method of blast furnace ironmaking scale hooper, specific steps and parameter are as follows：
1st, scale hooper feed zone 1 and scale hooper blowing section 2 are linked together, is connected or welded by threaded fastener
Deng.Threaded fastener connection is the reasonable cloth on flange by scale hooper feed zone 1 and the establishing docking port flange of scale hooper blowing section 2
Put bolt hole, connected using threaded fastener during in-site installation；Welding manner is to enter scale hooper in device fabrication or installation
Material section 1 is welded as entirety with scale hooper blowing section 2.
2nd, scale hooper feed zone 1 is provided with first charging aperture 3 and second charging aperture 4, and charging aperture is shaped as polygon and circle
One kind or the combination of two in shape.
The 3rd, Self-protecting abrasion-proof structure 5, including buildup platform 7 and gear are set below first charging aperture 3 and second charging aperture 4
Expect the two ways of structure 9.
(1) scale hooper box hat is in step type, forms stepped buildup platform 7, and the stepped quantity of buildup platform 7 is 1-20,
Buildup platform 7 is located at below charging aperture, and the material accumulated in buildup platform 7 forms stepped " backing strap " 8, and backgauge platform 6 is located at buildup
The edge of platform 7.The quiet angle of rest (repose) of material is β, is chosen by the physical property of material, 10-80 ° of β span, the angle of buildup platform
For γ, 0-180 ° of γ span.
Backgauge platform 6 is connected with buildup platform 7, is the auxiliary part that can be matched.Its effect is can to protect buildup platform 7
Be advantageous to the stabilization of stepped " backing strap " 8 thickness of feed layer again.The various shapes of backgauge platform 6, pass through buildup platform 7 and backgauge platform 6
The optimization design of geometry, it is ensured that being stabilized and keeping rational thickness of feed layer for stepped " backing strap " 8, kept away instead of liner plate
Exempt from impact and abrasion of the scale hooper box hat by charging aperture blanking, form Self-protecting abrasion-proof structure and play a protective role.Backgauge
Platform 6 is connected, welds or riveted for threaded fastener with the connected mode of buildup platform 7.
(2) material baffle structure 9 is set on the box hat 10 below scale hooper charging aperture, the quantity of material baffle structure 9 is 1~20 group,
Every group of material baffle structure 9 forms buildup space between box hat inner surface, constructs buildup platform, wherein the material accumulated is formed
Structure type " backing strap " 11, the angle between material baffle structure 9 and the inner surface of box hat 10 are θ, 0-180 ° of θ span.Backgauge knot
Structure 9 is connected, welds or riveted for threaded fastener with the connected mode of box hat 10.
The advantage of the invention is that：
1st, scale hooper total height is low, it is poor to reduce blanking
The scale hooper of two charging apertures can effectively reduce height, reduce blanking difference △ H, reduce blanking impact load.
2nd, good economy performance
It can cancel part or all of abrasion-proof backing block using the working face of Self-protecting abrasion-proof structure, equipment weight can be reduced
Amount, and can reduce equipment investment.
3rd, the long maintenance of service life is small
The working face of Self-protecting abrasion-proof structure provides its impact resistance, anti abrasive degree significantly, makes than abrasion-proof backing block
It is longer with the life-span, so as to reduce replacing, maintenance.
Brief description of the drawings
Fig. 1 is scale hooper structural representation.Wherein, scale hooper feed zone 1, scale hooper discharging section 2, first charging aperture 3,
Two charging apertures 4, Self-protecting abrasion-proof structure 5.
Fig. 2 is the mode one of the Self-protecting abrasion-proof structure 5 of I drawing in Fig. 1.Wherein, backgauge platform 6, buildup platform 7, rank
Ladder type " backing strap " 8.
Fig. 3 is the mode two of the Self-protecting abrasion-proof structure 5 of I drawing in Fig. 1.Wherein, material baffle structure 9, box hat 10, structure
Moulding " backing strap " 11.
Fig. 4 is the scale hooper schematic diagram of embodiment 1.Wherein, cover plate 12, scale hooper feed zone 1, scale hooper discharging section 2, first
Charging aperture 3, second charging aperture 4.
Fig. 5 is Fig. 4 left view.
Fig. 6 is II drawing in Fig. 4.Wherein, box hat 10, structure type " backing strap " 11, backgauge steel plate 13, backgauge rail
14th, buildup dividing plate 15.
Fig. 7 is the scale hooper schematic diagram of embodiment 2.Wherein, cover plate 12, scale hooper feed zone 1, scale hooper discharging section 2, first
Charging aperture 3, second charging aperture 4.
Fig. 8 is Fig. 7 left view.
Fig. 9 is III drawing in Fig. 7.Wherein, backgauge platform 6, buildup platform 7, stepped " backing strap " 8, buildup dividing plate 15.
Embodiment
Embodiment 1
A kind of blast furnace ironmaking scale hooper, is divided into two parts by structure.Part I is using Self-protecting abrasion-proof structure
Scale hooper feed zone 1；Part II is scale hooper blowing section 2.Scale hooper feed zone 1 is connected with scale hooper blowing section 2, scale hooper
Feed zone 1 is provided with first charging aperture 3 and second charging aperture 4, and two charging apertures are respectively arranged below with Self-protecting abrasion-proof structure
5。
Scale hooper feed zone 1 is funnel type structure, is divided into upper and lower two section, funnel section configuration is rectangle and trapezoidal group
Close.Section configuration is cuboid for the upper section of rectangle, and the length of cuboid is 6000mm, and wide is 2500mm, and height is 1577mm；Section
It is truncated rectangular pyramids to be shaped as trapezoidal lower section, and the upper bottom surfaces of truncated rectangular pyramids is rectangle, and length is that 6000mm, width are 2500mm, truncated rectangular pyramids
Bottom surface be rectangle, length is that 2963mm, width are 2500mm, and the height of truncated rectangular pyramids is 1519mm.
Scale hooper blowing section 2 is connected with the lower section of scale hooper feed zone 1 above, is connected below with scale hooper blowing gate.
Scale hooper blowing section 2 is positive truncated rectangular pyramids, and the upper bottom surfaces of positive truncated rectangular pyramids is square, and the length of side is 2500mm, bottom surface
And square, the length of side are 1000mm, height is 894mm, and the angle of its working face is 50 °.
Self-protecting abrasion-proof structure 5 is arranged on working face of the scale hooper by blanking impact and stream contact wear, such as Fig. 6 institutes
Show, including：Box hat 10, structure type " backing strap " 11, backgauge steel plate 13, backgauge rail 14, buildup dividing plate 15.Backgauge in embodiment 1
Structure is made up of backgauge steel plate 13, backgauge rail 14, and backgauge steel plate 13 is welded on box hat 10, backgauge rail 14 and backgauge steel plate
Using threaded connection between 13.The main function of backgauge rail 14 is to reduce stream washing away to backgauge steel plate 13, while is also had
Beneficial to buildup platform is formed, buildup space is formed between box hat 10 and material baffle structure, buildup platform is constructed, wherein the material accumulated
Form structure type " backing strap " 11 (shadow region in Fig. 6).Because the scale hooper material feeding area of embodiment 1 is larger, therefore in each structure
Make and 8 groups of buildup dividing plates 15 are set up on buildup platform, the buildup space between box hat 10 and material baffle structure is divided into latticed, increase
The stability of buildup.
Scale hooper is for super-huge BF Design, it is very big to cross doses, the material selection of backgauge rail 14 weldability
The poor wear resistant alloy material of energy, therefore fixed between backgauge rail 14 and backgauge steel plate 13 by the way of being threadedly coupled；Such as
From conventional welding material, then backgauge rail 14 should preferentially use welding manner to fruit with backgauge steel plate 13.
The preparation method of above-mentioned scale hooper, specific steps and parameter are as follows：
Entirety is welded as when the 1st, installing scale hooper feed zone 1 and scale hooper blowing section 2 at the scene.
2nd, scale hooper feed zone 1 is provided with cover plate 12, opens two holes on the cover board and is fed as first charging aperture 3 and second
Mouth 4, charging aperture is shaped as square, and the square length of side is 620mm.
3rd, first charging aperture 3 and the lower section of second charging aperture 4 set Self-protecting abrasion-proof structure 5, including：Below charging aperture
Scale hooper box hat 10 on set material baffle structure, the quantity of material baffle structure is 3 groups, every group of material baffle structure with scale hooper box hat 10
Buildup space is formed between surface, constructs buildup platform, wherein the material accumulated forms structure type " backing strap " 11. embodiment 1
Middle material variety is pellet, and quiet stocking angle β is 30 °, and the angle γ between material baffle structure and the inner surface of box hat 10 is 90 °.Gear
The connected mode for expecting structure and box hat 10 is welding.
Embodiment 2
A kind of blast furnace ironmaking scale hooper, is divided into two parts by structure.Part I is using Self-protecting abrasion-proof structure
Scale hooper feed zone 1；Part II is scale hooper blowing section 2.Scale hooper feed zone 1 is connected with scale hooper blowing section 2, scale hooper
Feed zone 1 is provided with first charging aperture 3 and second charging aperture 4, and two charging apertures are respectively arranged below with Self-protecting abrasion-proof structure
5。
Self-protecting abrasion-proof structure 5 is arranged on working face of the scale hooper by blanking impact and stream contact wear, claims herein
Batch box working face forms stepped buildup platform 7, mother metal is protected by the step type " backing strap " 8 accumulated in buildup platform 7 in step type
Reduction is washed away, reduction is worn；Part II scale hooper blowing section 2 possesses the function of conventional scale hooper.
Scale hooper feed zone 1 is funnel type structure, is divided into upper and lower two section, and funnel section configuration is rectangle, the group of polygon
Close.Section configuration is cuboid for the upper section of rectangle, and the length of cuboid is 6000mm, and wide is 2500mm, and height is 1577mm；Section
The lower section outer contour for being shaped as polygon is truncated rectangular pyramids, and the upper bottom surfaces of truncated rectangular pyramids is rectangle, and length is that 6000mm, width are
2500mm, the bottom surfaces of truncated rectangular pyramids are rectangles, and length is that 2963mm, width are 2500mm, and the height of truncated rectangular pyramids is 1519mm.,
Perforate φ 2500 on truncated rectangular pyramids bottom surface, the height of truncated rectangular pyramids is 1519mm.
Scale hooper blowing section 2 is connected with the lower section of scale hooper feed zone 1 above, is connected below with scale hooper blowing gate,
Perforate φ 2500 and scale hooper blowing section 2 are supporting on the truncated rectangular pyramids bottom surface of 1 time section of scale hooper feed zone.
Scale hooper blowing section 2 is round platform, and the upper bottom surface diameter of round platform is φ 2500mm, and the bottom surface diameter of round platform is φ
1000mm, the height of round platform is 894mm, and the angle of its working face is 50 °.
Self-protecting abrasion-proof structure 5 is arranged on working face of the scale hooper by blanking impact and stream contact wear, such as Fig. 9 institutes
Show, including：Backgauge platform 6, buildup platform 7, stepped " backing strap " 8.The material accumulated on buildup platform 7 forms stepped " backing strap " 8
(shadow region in such as Fig. 9).Backgauge platform 6 is made using square steel, is welded on scale hooper buildup platform 7, the main function of square steel is
Stream washing away to buildup platform 7 is reduced, while is also beneficial to form stable buildup platform, because the scale hooper of embodiment 2 is by charge level
Product is larger, therefore 8 groups of buildup dividing plates 15 is set up on each buildup platform 7, the buildup space of buildup platform 7 is divided into it is latticed,
Increase the stability of buildup.
The preparation method of above-mentioned scale hooper, specific steps and parameter are as follows：
Entirety is welded as when the 1st, installing scale hooper feed zone 1 and scale hooper blowing section 2 at the scene.
2nd, scale hooper feed zone 1 is provided with cover plate 12, and perforate is as first charging aperture 3 and second charging aperture 4 on the cover board,
Charging aperture is shaped as rectangle, and length is 800mm, and wide is 620mm.
3rd, first charging aperture 3 and the lower section of second charging aperture 4 set Self-protecting abrasion-proof structure 5, including：Backgauge platform 6, buildup
Platform 7, stepped " backing strap " 8.The quantity of ladder is 4, and each ladder forms 1 buildup platform, the material accumulated on buildup platform 7
Stepped " backing strap " 8 is formed, material variety is sintering deposit in embodiment 2, and quiet stocking angle is that β is 40 °, and the angle, θ of ladder is
90°.Backgauge platform 6 is made using square steel, and square steel and the connected mode of buildup dividing plate 15 and buildup platform 7 are welding.
Claims (7)
1. a kind of blast furnace ironmaking scale hooper, it is characterised in that be divided into two parts by structure, Part I is resistance to using Self-protecting
Grind the scale hooper feed zone (1) of structure；Part II is scale hooper blowing section (2)；Scale hooper feed zone (1) and scale hooper blowing
Section (2) connection, scale hooper feed zone (1) are provided with first charging aperture (3) and second charging aperture (4), divided below two charging apertures
She You not Self-protecting abrasion-proof structure (5).
2. scale hooper according to claim 1, it is characterised in that described scale hooper feed zone (1) is funnel type structure,
Funnel section configuration is the combination of one kind or two of which of rectangle, trapezoidal, circular and polygon etc..
3. scale hooper according to claim 1, it is characterised in that described scale hooper blowing section (2) is above and scale hooper
Feed zone (1) connects, and is connected below with scale hooper blowing gate；Scale hooper blowing section (2) using terrace with edge, round platform, old name for the Arabian countries in the Middle East it is round
Or the structure of hemispherical dome；Scale hooper blowing section (2) no matter which kind of structure, 20-80 ° of the angle [alpha] span of its working face.
4. scale hooper according to claim 1, it is characterised in that described Self-protecting abrasion-proof structure (5) is arranged on title
On the working face that batch box is worn by blanking impact and stream, including buildup platform (7) and material baffle structure (9) two ways.
5. scale hooper according to claim 1, it is characterised in that preparation technology is as follows：
1) scale hooper feed zone (1) and scale hooper blowing section (2) are linked together, is connected or welded by threaded fastener；
2) scale hooper feed zone (1) is provided with first charging aperture (3) and second charging aperture (4), charging aperture be shaped as polygon and
One kind or the combination of two in circle；
3) Self-protecting abrasion-proof structure (5), including buildup platform (7) are set below first charging aperture (3) and second charging aperture (4)
With material baffle structure (9) two ways；
1. scale hooper box hat forms stepped buildup platform (7), stepped buildup platform (7) quantity is 1-20, product in step type
Material platform (7) is located at below charging aperture, and the material accumulated in buildup platform (7) forms stepped " backing strap " (8), and backgauge platform (6) is set
At the edge of buildup platform (7)；The quiet angle of rest (repose) of material is β, 10-80 ° of β span, and the angle of buildup platform is γ, γ value
0-180 ° of scope；
2. setting material baffle structure (9) on the box hat (10) below scale hooper charging aperture, the quantity of material baffle structure (9) is 1~20 group,
Every group of material baffle structure (9) forms buildup space between box hat inner surface, constructs buildup platform, wherein the material shape accumulated
Into structure type " backing strap " (11), the angle between material baffle structure (9) and box hat (10) inner surface is θ, θ span 0-
180°；Material baffle structure (9) is connected, welds or riveted for threaded fastener with the connected mode of box hat (10).
6. scale hooper according to claim 5, it is characterised in that the threaded fastener connection described in step 1) is to claim
Batch box feed zone (1) and scale hooper blowing section (2) establishing docking port flange, arrange bolt hole on flange, use during in-site installation
Threaded fastener connects；Welding is to weld scale hooper feed zone (1) and scale hooper blowing section (2) in device fabrication or installation
For entirety.
7. scale hooper according to claim 5, it is characterised in that backgauge platform (6) and buildup platform (7) described in step 3)
Connection, is auxiliary part, had not only protected buildup platform (7) but also had been advantageous to the stabilization of stepped " backing strap " (8) thickness of feed layer；Backgauge platform
(6) it is connected, welds or rivets for threaded fastener with the connected mode of buildup platform (7).
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| CN201711224777.6A CN107805680A (en) | 2017-11-28 | 2017-11-28 | A kind of blast furnace ironmaking scale hooper |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113548424A (en) * | 2021-08-12 | 2021-10-26 | 珀挺机械工业(厦门)有限公司 | Wear-resistant material channel structure capable of realizing material beating and material distributing mechanism |
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