CN107142345A - Blast furnace cinder ditch stem bar - Google Patents
Blast furnace cinder ditch stem bar Download PDFInfo
- Publication number
- CN107142345A CN107142345A CN201710520696.4A CN201710520696A CN107142345A CN 107142345 A CN107142345 A CN 107142345A CN 201710520696 A CN201710520696 A CN 201710520696A CN 107142345 A CN107142345 A CN 107142345A
- Authority
- CN
- China
- Prior art keywords
- slag
- blast furnace
- stem bar
- furnace cinder
- side walls
- 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.)
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B3/00—General features in the manufacture of pig-iron
- C21B3/04—Recovery of by-products, e.g. slag
- C21B3/06—Treatment of liquid slag
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B3/00—General features in the manufacture of pig-iron
- C21B3/04—Recovery of by-products, e.g. slag
- C21B3/06—Treatment of liquid slag
- C21B3/08—Cooling slag
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B7/00—Blast furnaces
- C21B7/14—Discharging devices, e.g. for slag
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Furnace Details (AREA)
Abstract
The invention discloses a kind of blast furnace cinder ditch stem bar, the blast furnace cinder ditch stem bar is that refractory material and outside box hat that anti-slag iron corrodes are constituted by inner side, the two side walls for being divided into bottom surface and being connected.Inside bottom surface is plane, and the bottom surface is connected with two side walls using chamfering or cambered surface.Distance by the chamfering or cambered surface formation and horizontal plane where the minimum point of the horizontal plane where the wall intersection point of side to the bottom surface is that the minimum range between H, two side walls is L, wherein, L/H is more than 2, makes its Outlet Section formation flat.The blast furnace cinder ditch stem bar of the present invention can make slag stream thickness thinning, be easy to washing slag water to be preferably punched through molten slag layer, so as to improve cooling effectiveness, improve the glass rate of grain slag, the generation of slag wool or slag fiber is reduced, environmental pollution is reduced, the utilization rate of grain slag is greatly improved；It is also possible to reduce the water and hydraulic pressure of washing slag water, the consumption of electric power is reduced.
Description
Technical field
The present invention relates to blast furnace slag processing technology field, especially a kind of blast furnace cinder ditch stem bar and flush slag processing system
System.
Background technology
, it is known that blast furnace cinder is the byproduct of blast furnace ironmaking, blast furnace cinder water quenching technique is due to the grain slag quality after processing
Good, glass rate is high, makes the occupation rate of the technique up to more than 90%.Needed in blast furnace cinder water quenching handling process in slag ditch
Outlet, pelletizer top set molten cinder spout.Traditional slag channel gonys portion is semicircle, molten using centre during flush slag
Slag stream thickness is big, and washing slag water is difficult to penetrate slag, it is impossible to clinker is quickly cooled down, and causes still in the slag-water slurry after granulation
There is bulk slag, bulk slag cannot be cooled down in time due to internal heat, blast is produced easily in water, influence production operation
Safety.
Further, since the slag stream thickness flowed out from conventional flow mouth structure is big, to ensure that current are penetrated, it is necessary to increase flushing cinder
The pressure and flow of water, water resource waste are higher, and the power consumption of supply equipment is larger, cause the cost of operation maintenance higher.Together
When, impacting with high pressure is also easy to produce a large amount of slag wool or slag fiber, not only causes environmental pollution, also influences the health and safety of operating personnel.
Chinese patent literature (notification number：CN202989189U a kind of blast furnace discharge yard slag runner) is disclosed, the slag runner includes
Steel casing, protection brick layer, working lining and repair layer, wherein, positioned at the repair layer formation U-channel of innermost layer.The structure makes
With high-fire resistance and the ambiguity refractory material of shock resistance repairing abrasion slag runner, the repairing number of times of slag runner, the related dimension of reduction are reduced
Repair expense.But blast furnace cinder ditch cross sectional shape is not accounted for slag layer thickness and shape, and the effect to blast furnace slag quenching water
And influence, the glass rate of slag after blast furnace slag flushing is not accounted for yet, therefore, above mentioned problem is urgently to be resolved hurrily.
The content of the invention
In view of the above-mentioned problems in the prior art, the technical problems to be solved by the invention are to provide a kind of blast furnace and melted
Cinder spout and flush slag processing system.
In order to solve the above-mentioned technical problem, present invention employs following technical scheme：
A kind of blast furnace cinder ditch stem bar, stem bar uses double-layer structure, and outer layer is welding steel shell, and internal layer is that anti-slag iron is invaded
The refractory material of erosion；The bottom surface of internal layer and two side walls be connecteds using chamfering or cambered surface, form flat outlet shapes, it is described
The distance of horizontal plane is H, two where horizontal plane to the minimum point of the bottom surface where angle or cambered surface and two side walls intersection point
Minimum range between the side wall is L, wherein, L/H is more than 2.
Preferably, the bottom surface includes being located at the horizontal segment at middle part and is bent up respectively by the two ends of the horizontal segment
The side plate bending of Qu Yanshen formation, the distal end of the side plate bending is connected with the base of the side wall.
Preferably, being level or cancave cambered surface in the middle of the bottom surface.
Preferably, the molten cinder spout, which is used, sets water stream channel in metal material casting, the body of casting.
Preferably, the water stream channel is cast into by bended pipe and formed in the body of casting.
Preferably, the water stream channel is curvilinear or linear, and adjacent two water stream channels in fluid
Flow direction it is opposite.
Preferably, two side walls are rolled tiltedly outwardly, and the inclined inclination in side outwardly of two side walls
Amplitude is identical.
Compared with prior art, blast furnace cinder ditch stem bar of the invention and flush slag processing system can make slag stream thickness
It is thinning, it is easy to washing slag water to be preferably punched through molten slag layer, so as to improve cooling effectiveness, improves the glass rate of grain slag, reduce slag
Cotton or the generation of slag fiber, reduce environmental pollution, greatly improve the utilization rate of grain slag, furthermore it is also possible to reduce washing slag water
Water and hydraulic pressure, reduce the consumption of electric power, meanwhile, by by cast iron materials one-shot forming, and inside molten cinder spout
Water stream channel is set, makes inner surface of the slag when flowing into molten cinder spout in stem bar solidify to form one layer of slag solidification layer, makes
Follow-up slag will not wear and tear molten cinder spout when being moved in molten cinder spout, so that the loss of molten cinder spout is reduced,
The service life of blast furnace cinder ditch is improved, the molten cinder spout of this structure is either newly-built or transformation does not affect life
Production, use and maintenance cost is all more cheap.
Brief description of the drawings
Fig. 1 is a kind of structural representation of embodiment of the present invention；
Fig. 2 is the structural representation of another embodiment of the present invention；
Fig. 3 is the structural representation of the another embodiment of the present invention；
Fig. 4 is the structural representation of the flush slag processing system of the present invention.
Description of reference numerals：
1- melts cinder spout 11- bottom surfaces 12- sides wall 111- horizontal segment 112- side plate bending 2- slag ditch ditch bodies 3-
Box hat 5- melts cinder spout working lining 6- blast furnace 61- tap cinders mouthful 7- punching groove or the 81- punchings of granulation tower 8- pelletizers
Pulp water exports 9- water stream channels.
Embodiment
In order to facilitate the understanding of the purposes, features and advantages of the present invention, below in conjunction with the accompanying drawings to the present invention
Embodiment be described in detail.
Many details are elaborated in the following description to facilitate a thorough understanding of the present invention, still the present invention can be with
It is different from other manner described here using other to implement, those skilled in the art can be without prejudice to intension of the present invention
In the case of do similar popularization, therefore the present invention is not limited by following public specific embodiment.
Secondly, the present invention is described in detail with reference to schematic diagram, when the embodiment of the present invention is described in detail, for purposes of illustration only, table
The profile of showing device structure can disobey general ratio and make partial enlargement, and the schematic diagram is example, and it should not herein
Limit the scope of protection of the invention.In addition, the three-dimensional space of length, width and depth should be included in actual fabrication.
The present invention provides a kind of blast furnace cinder ditch stem bar, wherein, blast furnace cinder ditch stem bar include bottom surface and with bottom surface both sides
The two side walls connected, the horizontal plane where horizontal plane to the minimum point of the bottom surface where the peak of the bottom surface
Distance is that the minimum range between H, two side walls is L, wherein, L/H is more than 2, and blast furnace is melted by such structure
Slag layer thickness of the slag in slag ditch bottom is reduced, and makes the washing slag water of pelletizer be easier to be punched through molten slag layer, so as to lift cooling
Efficiency, improves the glass rate of grain slag, reduces the generation of slag wool or slag fiber, can also reduce the water and hydraulic pressure of washing slag water,
Power consumption is reduced, specifically, the bottom surface can be gradually curved with fixed curvature from its center to two sides wall direction
It is curved into, or, the bottom surface can also gradually be extended with the curvature changed from its center to two sides wall direction and be formed, under
Face is illustrated by specific embodiment.
Embodiment one
As shown in Figure 1 to Figure 3, the present embodiment provides a kind of blast furnace cinder ditch, and it includes molten cinder spout, and stem bar uses two
Rotating fields, outer layer is the box hat 3 of welding steel shell, and internal layer is the molten cinder spout working lining for the refractory material that anti-slag iron corrodes
5, the inwall of the molten cinder spout 1 includes bottom surface 11 and the two side walls 12 connected respectively with the both sides of the bottom surface 11,
The bottom surface 11 of internal layer is connected with two side walls 12 using chamfering or cambered surface, forms flat outlet shapes, the chamfering or cambered surface
Distance with horizontal plane where the minimum point of the horizontal plane where two side walls intersection point to the bottom surface 11 is H, two sides
Minimum range between wall 12 is L, wherein, L/H ratio is more than 2.
Further, the bottom surface 11 is level or cancave cambered surface, for example, in the present embodiment, the bottom surface 11 is semiellipse
Shape, certainly, the bottom surface 11 can also be other cambered surfaces, the arc surface or other cambered surfaces of such as non-semicircle.
Further, one end of the slag ditch ditch body 2 connects the molten cinder spout, the slag ditch ditch body 2 it is another
One end is connected to the slag notch of blast furnace 6.
With continued reference to Fig. 1, the stem bar is by being arranged on outermost box hat 3 and being arranged on the slag runner working lining structure of inner side
Into.Two side walls 12 are rolled tiltedly outwardly, so that molten cinder spout section configuration is in enlarging shape, so as to be formed under width
Narrow wedge-shaped ditch shape.
It is preferred that, the inclined magnitude of inclination in side is identical outwardly for two side walls 12, it is easy to manufacture.
In the present embodiment, when L/H ratio more be more than 2, melt cinder spout inboard width compared to slag ditch on the inside of
Width broadens, consequently facilitating slag stream is preferably laid in the bottom of blast furnace cinder ditch stem bar, makes slag stream in the thickness of stem bar
It is thinning, it is easy to washing slag water to be punched through slag stream, is easy to slag quickly to cool down, and the operation hydraulic pressure of washing slag water supply equipment can be reduced,
The operating pressure of washing slag water supply equipment is reduced, the energy is saved；A large amount of slag wool or slag fiber are not likely to produce after slag granulating, is subtracted
Few environmental pollution and the influence to health.
When it is implemented, the width dimensions of blast furnace cinder ditch stem bar are typically matched with blast furnace cinder ditch outlet size, L with
When H ratio is met more than 2, the cross sectional shape of the bottom surface 11 is the arc-shaped of half elliptic or other non-semicircles, then can
Enough meet the technical requirements that slag preferably tiles in the bottom of molten cinder spout, for example, when the bottom surface 11 peak (i.e.
The chamfering or cambered surface and the intersection point of two side walls 12) where horizontal plane to the minimum point of the bottom surface 11 where horizontal plane
Apart from H be 0.15m when, L be more than 0.3m.
Embodiment two
Reference picture 2, the present embodiment is the improvement on the basis of embodiment one, specifically, it provides a kind of blast furnace cinder
Ditch stem bar, the blast furnace cinder ditch stem bar includes bottom surface 11 and the two side walls connected respectively with the both sides of the bottom surface 11
12, the bottom surface 11 includes being located at the horizontal segment 111 at middle part and is bent upwards extension respectively by the two ends of the horizontal segment 111
The side plate bending 112 of formation, the distal end of the side plate bending 112 is connected with the base of the side wall.
In the present embodiment, the middle part of bottom surface 11 of the molten cinder spout has horizontal segment 111, and slag of being more convenient for is at ditch body bottom
The tiling in portion, while the thickness of slag stream can also be reduced, washing slag water of being more convenient for is punched through slag stream, is easy to slag quickly to cool down,
Minimum range L between two side walls 12 of the slag ditch in the present embodiment and bottom surface 11 peak (i.e. described chamfering or
Cambered surface and the intersection point of two side walls 12) where horizontal plane to the minimum point of the bottom surface 11 where horizontal plane the ratio apart from H
Value is also greater than 2.
In the present embodiment, it is bent upwards to form two side plate bendings respectively in the both sides of the bottom surface 11 of the molten cinder spout
112, it is to avoid slag forms slag adhesion layer at the bottom corners of molten cinder spout, improve and slag tap speed and granulation is imitated
Really.
Embodiment three
Reference picture 3, the embodiment of the present invention further provides for a kind of blast furnace cinder ditch, and the present embodiment is the base in embodiment two
Improvement on plinth, specifically, the refractory masses section structure of the blast furnace cinder ditch stem bar in the present embodiment is that have certain thickness
The resistance to material of ambiguity of degree is formed, or uses metal material casting in a mold, and the metal material can use cast iron
Deng it has good thermal conductivity.
Further, water stream channel 9 is set in the molten cinder spout 1 that metal material is made, and the water stream channel 9 is along molten
Slag flow direction is set, in addition, the water stream channel 9 can be provided only in the bottom surface of the molten cinder spout 1, in use,
The water flowing into the water stream channel 9, makes the inner side temperature reduction of molten cinder spout 1, the molten of blast furnace cinder ditch is flowed into from blast furnace
Slag is when by molten cinder spout 1, by low temperature effect, can solidify to form one layer of slag solidification protection in the inner surface of stem bar
Layer, follow-up slag is contacted when by molten cinder spout 1 with slag solidification protective layer, without with molten cinder spout working lining
Contact, so as to avoid the abrasion to stem bar working lining, improves the service life of blast furnace cinder ditch stem bar, reduces maintenance expense
With；So that follow-up slag will not cause abrasion in flow process to the working lining for melting cinder spout, so as to improve slag
The service life of ditch stem bar working lining, reduces maintenance cost.
In above-described embodiment, with further reference to Fig. 3, water stream channel 9 have it is a plurality of and along slag flow direction, respectively in stream
It is set up in parallel in the bottom surface of mouth, such structure can make the cooling effect of slag ditch stem bar working face various pieces try one's best one
Cause.
It is preferred that, the shape of water stream channel 9 can be arranged as required to, such as snakelike or linear, in the present embodiment
For the fluid (water) in snakelike and adjacent two water stream channels 9 flow direction on the contrary, so can further make in stem bar
The cooling effect of diverse location more they tends to unanimously enable the diverse location of the working lining of molten cinder spout form what is be more uniformly distributed
Slag protective layer.
Reference picture 4, the present invention further provides a kind of flush slag processing system, including blast furnace 6, punching groove or granulation tower 7,
Pelletizer 8 and above-mentioned blast furnace cinder ditch, specifically, the pelletizer 8 is arranged on the lower section of the molten cinder spout 1, it is described
The end of molten cinder spout 1 is relative with the feeding mouth of the granulation tower 7.
When it is implemented, when blast furnace 6 is smelted and produces molten iron, byproduct-high-temperature slag that blast furnace 6 is produced passes through slag ditch
Into molten cinder spout 1, the flow section shape of slag produces change, and the thickness of molten slag layer is thinning, and now slag continues forward
Flowing, melts cinder spout 1 with certain speed outflow and falls, while outflow molten cinder spout 1, the washing slag water of pelletizer
Outlet sprays washing slag water, the high-temperature slag flowed out from molten cinder spout is penetrated in time, flushing cinder penetration by water is smashed after slag, with pulp water
Mixture together falls into punching groove or granulation tower 7 carries out quick granulation cooling, and slag is quickly cooled down by liquid phase realizes that petrofacies change,
High-vitrification crystal slag particle is obtained, slag-water slurry sloughs moisture therein by further separating and filtering, obtains qualified grain slag
Grain, due to molten slag layer thickness when by molten cinder spout it is thinning so that washing slag water is easier to be punched through molten slag layer, flushing cinder hydraulic pressure
Power can reduce by 20% compared with common slag runner structure, can also reduce pump head, power consumption and common slag runner structure phase
Than 30% can be reduced.Improve the cooling effectiveness of washing slag water so that generation silicate and aluminium when slag liquid-phase conversion is solid phase
Hydrochlorate percent crystallization in massecuite is higher, improves the glass rate of grain slag, and glass rate can reach 98%.Slag wool or slag fiber are reduced in addition
Generation, greatly improve the quality of grain slag, grain slag quality from one-level can be promoted to superfine, in addition, reducing environment
Pollution, greatly improves the utilization rate of grain slag, and the molten cinder spout of this spline structure is either newly-built or transformation does not affect life
Production, use and maintenance cost is all more cheap.
Above example is only the exemplary embodiment of the present invention, is not used in the limitation present invention, protection scope of the present invention
It is defined by the claims.Those skilled in the art can make respectively in the essence and protection domain of the present invention to the present invention
Modification or equivalent substitution are planted, this modification or equivalent substitution also should be regarded as being within the scope of the present invention.
Claims (7)
1. a kind of blast furnace cinder ditch stem bar, it is characterised in that stem bar uses double-layer structure, outer layer is welding steel shell, internal layer
The refractory material corroded for anti-slag iron；The bottom surface of internal layer is connected with two side walls using chamfering or cambered surface, forms flat outlet
Horizontal plane where shape, the chamfering or cambered surface and two side walls intersection point to the minimum point place horizontal plane of the bottom surface away from
From for H, the minimum range between two side walls is L, wherein, L/H is more than 2.
2. blast furnace cinder ditch stem bar according to claim 1, it is characterised in that the bottom surface includes the level positioned at middle part
Section and the side plate bending that is formed of extension, the distal end of the side plate bending and the side are bent upwards respectively by the two ends of the horizontal segment
The base connection of wall.
3. blast furnace cinder ditch stem bar according to claim 1, it is characterised in that be level or concave arc in the middle of the bottom surface
Face.
4. blast furnace cinder ditch stem bar according to claim 3, it is characterised in that the molten cinder spout uses metal material
Water stream channel is set in casting, the body of casting.
5. blast furnace cinder ditch stem bar according to claim 4, it is characterised in that the water stream channel is cast into by bended pipe
Formed in the body of casting.
6. blast furnace cinder ditch stem bar according to claim 5, it is characterised in that the water stream channel is curvilinear or straight line
The flow direction of fluid in shape, and adjacent two water stream channels is opposite.
7. blast furnace cinder ditch stem bar according to claim 1, it is characterised in that two side walls are rolled outwardly
Tiltedly, and two side walls the inclined magnitude of inclination in side is identical outwardly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710520696.4A CN107142345B (en) | 2017-06-30 | 2017-06-30 | Blast furnace slag channeling nozzle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710520696.4A CN107142345B (en) | 2017-06-30 | 2017-06-30 | Blast furnace slag channeling nozzle |
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| Publication Number | Publication Date |
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| CN107142345A true CN107142345A (en) | 2017-09-08 |
| CN107142345B CN107142345B (en) | 2023-09-12 |
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| CN201710520696.4A Active CN107142345B (en) | 2017-06-30 | 2017-06-30 | Blast furnace slag channeling nozzle |
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| Title |
|---|
| 蔡敬民;陈胜香;熊先平;邹尚彬;李必顺;: "武钢高炉炉前渣铁沟及英巴沟嘴改造" * |
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| Publication number | Publication date |
|---|---|
| CN107142345B (en) | 2023-09-12 |
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