CN102642017B - Ladle bottom structure of continuous casting ladle - Google Patents
Ladle bottom structure of continuous casting ladle Download PDFInfo
- Publication number
- CN102642017B CN102642017B CN201210112748.1A CN201210112748A CN102642017B CN 102642017 B CN102642017 B CN 102642017B CN 201210112748 A CN201210112748 A CN 201210112748A CN 102642017 B CN102642017 B CN 102642017B
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- China
- Prior art keywords
- ladle
- blocking wall
- continuous casting
- slag blocking
- river
- 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.)
- Expired - Fee Related
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- 238000009749 continuous casting Methods 0.000 title claims abstract description 33
- 239000002893 slag Substances 0.000 claims abstract description 69
- 238000007789 sealing Methods 0.000 claims abstract description 4
- 230000000903 blocking effect Effects 0.000 claims description 50
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 13
- 229910052786 argon Inorganic materials 0.000 claims description 7
- 238000007664 blowing Methods 0.000 claims description 7
- 239000011449 brick Substances 0.000 claims description 4
- 239000004927 clay Substances 0.000 claims description 4
- 229910052751 metal Inorganic materials 0.000 abstract description 13
- 239000002184 metal Substances 0.000 abstract description 13
- 230000015572 biosynthetic process Effects 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 5
- 238000010276 construction Methods 0.000 abstract description 2
- 230000000149 penetrating effect Effects 0.000 abstract 1
- 239000007788 liquid Substances 0.000 description 13
- 229910000831 Steel Inorganic materials 0.000 description 10
- 239000010959 steel Substances 0.000 description 10
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 238000011084 recovery Methods 0.000 description 4
- 238000005266 casting Methods 0.000 description 3
- 230000003749 cleanliness Effects 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- 238000004945 emulsification Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000005275 alloying Methods 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 150000001485 argon Chemical class 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003818 cinder Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000009851 ferrous metallurgy Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000009931 harmful effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000010813 municipal solid waste Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Landscapes
- Carbon Steel Or Casting Steel Manufacturing (AREA)
Abstract
The invention provides a ladle bottom structure of a continuous casting ladle. The continuous casting ladle is provided with a cylindrical ladle (1) and a ladle bottom (2) sealing the bottom of the ladle (1), wherein the ladle bottom (2) is provided with a water port (3) penetrating the ladle bottom (2). The ladle bottom structure of the continuous casting ladle is characterized in that the ladle bottom (2) is provided with a slag baffling wall (4) adjacent to the water port (3), the height of the slag baffling wall (4) is equal to the critical height capable of producing a converging vortex at least, and the lower part of the slag baffling wall (4) is provided with a plurality of through holes (5) communicated with the water port (3). According to the ladle bottom structure of the continuous casting ladle, the formation of the converging vortex can be efficiently restrained, and the metal yield is enhanced. The ladle bottom structure of the continuous casting ladle has the advantages of simple construction, convenience in operation, long service life and low production cost.
Description
Technical field
The invention belongs to technical field of ferrous metallurgy, specifically, relate to a kind of large bag structure of ladle bottom of continuous casting that can effectively suppress the formation of conflux vortex.
Background technology
In continuous casting process production process, molten steel flows into tundish from large bag by long nozzle protective casing.Decline along with cast later stage liquid steel level, can produce conflux vortex, and grow in intensity, and impels the emulsification of slag steel, and slag is flow to into tundish with steel.Conflux vortex refers to: in container drainage process, liquid is vertical decline first, while dropping to certain altitude, liquid just starts to collect to the center line that goes out head piece, and forming recessed whirlpool on slag blanket surface, liquid level is now commonly referred to as " critical revolves height " (hereinafter referred to as " critical altitude ").When recessed whirlpool has just produced, position is cruised indefinitely, and now desulphurization starts fuzzyly, and slag particle starts emulsification and enter in molten steel, but now because position, recessed whirlpool can not flow to water inlet with steel compared with the high slag that makes.Along with the further decline of liquid level, recessed whirlpool is more and more obvious, and swirl velocity is also increasing, until connect the mouth of a river, liquid level is now called as " connecting height ", and at this moment, a large amount of slags has entered the mouth of a river.When liquid level drops to certain altitude, the fluid particle originally confluxing to the center line that goes out head piece is because the effect of centrifugal force produces tangential velocity (angular speed), make more and more Off-Radial and develop into the rotational flow around center line of its movement locus, until finally develop into the funnel-form vortex that the perforation with strong swabbing action goes out head piece, cause whirlpool core volume gas or slag and under.
The harm that ladle vortex slag is brought mainly contains: (1) worsens the casting performance of molten steel, makes nozzle blocking, causes cast normally not carry out; (2) cause alloying element oxidation, and produce field trash, affect the cleanliness factor of molten steel; (3) in strand, dissolved aluminum content declines, tundish and long nozzle Eroded; (4) large cinder inclusion enters tundish and causes slag in tundish to gather, and to casting process, causes harmful effect; (5) tundish cleaning work amount increases.In actual production, near slag checkout gear under installing the ladle bottom mouth of a river conventionally, when the quantity of slag in entering molten steel stream accounts for certain proportion, close in advance slide gate nozzle, to reduce the lower quantity of slag, but the method can make residual too much molten steel in ladle, has reduced recovery rate of iron.
Domestic published patent documentation has 01234802.3,95232437.7,02279160.4,200620007910.3,200920013656.1 etc., above patent documentation is owing to bringing certain difficulty to current technology, or due to service life, be not applied at home.
For this reason, the invention provides the large bag structure of ladle bottom of a kind of continuous casting, its object is to alleviate and fundamentally suppresses even the formation of conflux vortex, reduces and even the lower slag of elimination.
Summary of the invention
In order to overcome the deficiencies in the prior art, the invention provides the large bag structure of ladle bottom of a kind of continuous casting, the large bag structure of ladle bottom of described continuous casting can suppress the formation of conflux vortex effectively, improves recovery rate of iron, and simple, easy to operate, the long service life of constructing, production cost are low.
An aspect of of the present present invention provides a kind of continuous casting large bag structure of ladle bottom, at the bottom of the large bag of described continuous casting has the bag of cylindrical shape inclusion and the bottom of the described inclusion of sealing, offer the mouth of a river of the thickness at the bottom of running through described bag at the bottom of described bag, it is characterized in that, on at the bottom of described bag, be provided with the slag blocking wall contiguous with the described mouth of a river, the height of described slag blocking wall at least equates with the critical altitude that produces conflux vortex, offers a plurality of through holes that are communicated with the described mouth of a river in the bottom of described slag blocking wall.
At least a portion of described slag blocking wall can be tangent with the described mouth of a river.
Described slag blocking wall can have the shape tangent with the described mouth of a river.
The two ends of described slag blocking wall can be attached to the inwall of described inclusion, described slag blocking wall can with together with the inwall of described inclusion, form the space that surrounds the described mouth of a river.
Described slag blocking wall can be built by laying bricks or stones and be fixed at the bottom of described bag by fire clay by arch bridges on.
On at the bottom of described bag, also can offer the argon blowing hole of the thickness at the bottom of running through described bag, described argon blowing hole can be positioned at the outside in the described space that the inwall by described slag blocking wall and described inclusion forms.
Beneficial effect of the present invention is:
(1) can suppress the generation of conflux vortex, control lower slag, improve the cleanliness factor of molten metal, improve recovery rate of iron, thereby improve the quality of products.
(2) construction is simple, and production cost is low.
(3) simple in structure, easy for installation, adopt arch bridges, long service life.
Accompanying drawing explanation
By the description of exemplary embodiment being carried out below in conjunction with accompanying drawing, it is clear and easier to understand that these and/or other aspect of the present invention will become, in the accompanying drawings:
Fig. 1 is the schematic cutaway drawing illustrating according to the large bag structure of ladle bottom of the continuous casting of exemplary embodiment of the present invention.
Fig. 2 is the schematic elevational view of the large bag structure of ladle bottom of the continuous casting according to exemplary embodiment of the present invention shown in Fig. 1.
Fig. 3 is the schematic plan of the large bag structure of ladle bottom of the continuous casting according to exemplary embodiment of the present invention shown in Fig. 1.
Being described as follows of label in accompanying drawing: 1 is the inclusion of the large bag of continuous casting, 2 be the bag of the large bag of continuous casting at the bottom of, 3 is the mouth of a river, 4 is slag blocking wall, 5 is through hole, 6 is argon blowing hole.
The specific embodiment
Below, describe with reference to the accompanying drawings exemplary embodiment of the present invention in detail.Yet the present invention can implement with multiple different form, and should not be construed as be limited to exemplary embodiments set forth herein.In the accompanying drawings, for the sake of clarity, can exaggerate the size of parts, and identical label is indicated identical parts all the time.
Fig. 1 is the schematic cutaway drawing illustrating according to the large bag structure of ladle bottom of the continuous casting of exemplary embodiment of the present invention.
As shown in fig. 1, according to the large bag of the continuous casting of exemplary embodiment of the present invention, can have at the bottom of the bag of bottom of cylindrical shape inclusion 1 and sealing inclusion 12, at bag,, can offer the mouth of a river 3 of running through the thickness that wraps the end 2 at the end 2.
Fig. 2 is the schematic elevational view of the large bag structure of ladle bottom of the continuous casting according to exemplary embodiment of the present invention shown in Fig. 1.Fig. 3 is the schematic plan of the large bag structure of ladle bottom of the continuous casting according to exemplary embodiment of the present invention shown in Fig. 1.
As shown in Figure 1 to Figure 3, in order to prevent conflux vortex, at bag, can be provided with the slag blocking wall 4 contiguous with the mouth of a river 3, the height of this slag blocking wall 4 can at least equate with the critical altitude that produces conflux vortex, and can offer in the bottom of slag blocking wall 4 a plurality of through holes 5 that are communicated with the mouth of a river 3 at the end 2.
In addition, at least a portion of slag blocking wall 4 can be positioned at the position tangent with the mouth of a river 3.The two ends of slag blocking wall 4 can be attached to the inwall of inclusion 1, thus slag blocking wall 4 can with together with the inwall of inclusion 1, form the space that surrounds the mouth of a river 3.
Specifically, in the exemplary embodiment shown in Fig. 1 to Fig. 3, slag blocking wall 4 can have the shape tangent with the mouth of a river 3, and the mouth of a river 3 can have round-shaped.Visual angle from the top view shown in Fig. 3, orthogonal two parts of L shaped slag blocking wall 4 are all tangent with the circumference at the mouth of a river 3, and the two ends of slag blocking wall 4 are all attached to the inwall of inclusion 1, thereby slag blocking wall 4 can surround the mouth of a river 3 and central angle is the sector space of 90 degree or the space of almost fan with forming together with the inwall of inclusion 1.
In this exemplary embodiment, slag blocking wall 4 can be built and be fixed on by arch bridges by laying bricks or stones bag at the end 2 by fire clay.
Although the present invention has described the situation that slag blocking wall 4 has the shape tangent with the mouth of a river 3 by way of example, but the invention is not restricted to this, slag blocking wall 4 can have various shapes, for example, slag blocking wall 4 can be only some and the mouth of a river 3 tangent, or slag blocking wall 4 can have and surrounds the circular shape at the mouth of a river, rectilinear form even, as long as it can effectively alleviate or eliminate conflux vortex slag phenomenon.In addition, can not be combined with the inwall of inclusion 1 in the two ends of slag blocking wall 4 yet.
In addition, as shown in Figures 1 and 2, in the bottom of slag blocking wall 4, can offer a plurality of through holes 5 that are communicated with the mouth of a river 3, so that the metal liquid stream water inlet 3 in the large bag of described continuous casting.
Specifically, in the exemplary embodiment shown in Fig. 1 to Fig. 3, described a plurality of through holes 5 can have semicircular in shape, and when the liquid level of the molten metal in the large bag of described continuous casting reaches the height of slag blocking wall 4, molten metal can flow into the mouth of a river 3 from described a plurality of through holes 5.
In addition, as shown in Figure 1 and Figure 3, at bag, also can offer the argon blowing hole 6 that runs through the thickness that wraps the end 2 on the end 2, this argon blowing hole 6 is positioned at the outside in the space that the inwall by slag blocking wall 4 and inclusion 1 forms.
Hereinafter, by take slag blocking wall 4 height and produce situation that the critical altitude of conflux vortex equates and to thering is the operation principle of the large bag of continuous casting of structure of ladle bottom as above, be described as example.
According to the large bag structure of ladle bottom of continuous casting described above, during the liquid level higher (higher than the height of slag blocking wall 4) of the molten metal in the large bag of described continuous casting, molten metal is 3 the inflow mouth of a river, top 3 from the mouth of a river, carrying out along with casting, the liquid level of molten metal further reduces, when the liquid level of molten metal reach produce conflux vortex critical altitude (, the height of slag blocking wall 4) time, molten metal flows into the mouth of a river 3 from a plurality of through holes 5 of slag blocking wall 4 bottoms, the dissipation of Hydrodynamic turbulence energy is caused on the top of slag blocking wall 4, thereby suppress the formation of conflux vortex, avoid thus producing conflux vortex slag phenomenon.By this way, can control the lower quantity of slag, improve cleanliness factor and the recovery rate of metal, thereby further improve the quality of products.
Although the present invention has described the situation that described a plurality of through hole 5 has semicircular in shape by way of example, the invention is not restricted to this, described a plurality of through holes 5 can have various shapes, for example, the shapes such as rectangle, triangle.
In addition, although the present invention has described slag blocking wall 4 by way of example, built by laying bricks or stones situation about forming by arch bridges by fire clay, the invention is not restricted to this, slag blocking wall 4 can form by various technique, as long as can realize object of the present invention.
In sum, according to exemplary embodiment of the present invention, the slag blocking wall 4 that is being provided with it at the bottom of the bag of the large bag of continuous casting on 2 and highly at least equates with the critical altitude that produces conflux vortex, and in the bottom of slag blocking wall 4, offer a plurality of through holes 5, thereby when the liquid level of molten metal reaches the critical altitude that produces conflux vortex, molten metal flows into the mouth of a river 3 from a plurality of through holes 5 of slag blocking wall 4 bottoms, and the dissipation of Hydrodynamic turbulence energy is caused on the top of slag blocking wall 4, thereby suppresses the formation of conflux vortex.
Although illustrated by reference to the accompanying drawings and described some exemplary embodiments, but what it should be appreciated by those skilled in the art is, in the situation that do not depart from principle of the present invention and the spirit that is limited its scope by claim and equivalent thereof, can modify and modification to these exemplary embodiments.
Claims (3)
1. the large bag structure of ladle bottom of continuous casting, the large bag of described continuous casting has (2) at the bottom of the bag of bottom of cylindrical shape inclusion (1) and the described inclusion of sealing (1), on (2) at the bottom of described bag, offer the mouth of a river (3) of the thickness of (2) at the bottom of running through described bag, it is characterized in that, on (2) at the bottom of described bag, be provided with the slag blocking wall (4) contiguous with the described mouth of a river (3), the height of described slag blocking wall (4) at least equates with the critical altitude that produces conflux vortex, in the bottom of described slag blocking wall (4), offer a plurality of through holes (5) that are communicated with the described mouth of a river (3), at least a portion of described slag blocking wall (4) and the described mouth of a river (3) are tangent,
Wherein, described slag blocking wall (4) has the shape tangent with the described mouth of a river (3),
Wherein, the two ends of described slag blocking wall (4) are attached to the inwall of described inclusion (1), form the space that surrounds the described mouth of a river (3) together with the inwall of described slag blocking wall (4) and described inclusion (1).
2. the large bag structure of ladle bottom of continuous casting according to claim 1, is characterized in that, at the bottom of described bag is built and be fixed on to described slag blocking wall (4) by arch bridges by laying bricks or stones by fire clay on (2).
3. the large bag structure of ladle bottom of continuous casting according to claim 1, it is characterized in that, on (2) at the bottom of described bag, also offer the argon blowing hole (6) of the thickness of (2) at the bottom of running through described bag, described argon blowing hole (6) is positioned at the outside in the described space that the inwall by described slag blocking wall (4) and described inclusion (1) forms.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210112748.1A CN102642017B (en) | 2012-04-17 | 2012-04-17 | Ladle bottom structure of continuous casting ladle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210112748.1A CN102642017B (en) | 2012-04-17 | 2012-04-17 | Ladle bottom structure of continuous casting ladle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102642017A CN102642017A (en) | 2012-08-22 |
| CN102642017B true CN102642017B (en) | 2014-09-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210112748.1A Expired - Fee Related CN102642017B (en) | 2012-04-17 | 2012-04-17 | Ladle bottom structure of continuous casting ladle |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112658237A (en) * | 2020-12-11 | 2021-04-16 | 北京首钢股份有限公司 | Steel ladle capable of inhibiting eddy current |
| CN113020580B (en) * | 2021-03-01 | 2022-08-16 | 武汉钢铁有限公司 | Arc-shaped vortex-resisting device for bottom of steel ladle |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FI844183L (en) * | 1983-10-28 | 1985-04-29 | Werner Schatz | FOERFARANDE FOER FRAMSTAELLNING AV HAORDAEMNESPARTIKLAR INNEHAOLLANDE METALLBLOCK, -HALVFABRIKAT ELLER PROFILMATERIAL. |
| CN2403519Y (en) * | 1999-11-26 | 2000-11-01 | 冶金工业部钢铁研究总院 | Combine molten steel slag-pushing off filtering apparatus for intermediate ladle |
| CN1289234C (en) * | 2004-06-18 | 2006-12-13 | 宜兴市振球炉料有限公司 | Gas permeation type cinder dam |
| KR20060038133A (en) * | 2004-10-29 | 2006-05-03 | 주식회사 포스코 | Ladle for preventing slag from discharging |
| CN201140272Y (en) * | 2007-11-12 | 2008-10-29 | 鞍钢股份有限公司 | Tundish swirler |
| CN101549397A (en) * | 2008-03-31 | 2009-10-07 | 鞍钢股份有限公司 | Method for reducing slag discharge of molten steel tank |
| CN201264086Y (en) * | 2008-09-27 | 2009-07-01 | 鞍钢股份有限公司 | Bottom argon blowing multi-flow bloom continuous casting tundish |
| CN201603863U (en) * | 2010-01-14 | 2010-10-13 | 宝山钢铁股份有限公司 | Hot rolling continuous casting tundish |
| CN202606844U (en) * | 2012-04-17 | 2012-12-19 | 莱芜钢铁集团有限公司 | Continuous casting ladle bottom structure |
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2012
- 2012-04-17 CN CN201210112748.1A patent/CN102642017B/en not_active Expired - Fee Related
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| CN102642017A (en) | 2012-08-22 |
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Inventor after: Wang Bo Inventor after: Yang Zhou Inventor after: Liu Chao Inventor after: Liu Huajun Inventor after: Ma Lin Inventor after: Han Ruwen Inventor after: Li Jun Inventor after: Wang Mingjie Inventor after: Wang Wensheng Inventor after: Zhang Guanfeng Inventor after: Liu Hongyin Inventor after: Liu Mei Inventor before: Ma Lin Inventor before: Wang Bo Inventor before: Zhang Guanfeng Inventor before: Liu Hongyin Inventor before: Liu Mei Inventor before: Yang Zhou Inventor before: Liu Chao Inventor before: Liu Huajun |
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Free format text: CORRECT: INVENTOR; FROM: MA LIN WANG BO ZHANG GUANFENG LIU HONGYIN LIU MEI YANG ZHOU LIU CHAO LIU HUAJUN TO: WANG BO MA LIN HAN RUWEN LI JUN WANG MINGJIE WANG WENSHENG ZHANG GUANFENG LIU HONGYIN LIU MEI YANG ZHOU LIU CHAO LIU HUAJUN |
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