CN104384488A - Ladle design method capable of preventing slag entrapment of molten steel - Google Patents
Ladle design method capable of preventing slag entrapment of molten steel Download PDFInfo
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- CN104384488A CN104384488A CN201410611773.3A CN201410611773A CN104384488A CN 104384488 A CN104384488 A CN 104384488A CN 201410611773 A CN201410611773 A CN 201410611773A CN 104384488 A CN104384488 A CN 104384488A
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- Prior art keywords
- ladle
- molten steel
- steel slag
- height
- designing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
- B22D41/02—Linings
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Treatment Of Steel In Its Molten State (AREA)
Abstract
The invention discloses a ladle design method capable of preventing slag entrapment of molten steel. The ladle design method comprises the following steps: (1) simulating the slag entrapment position of the molten steel according to Fluent software, wherein the height during the slag entrapment of the molten steel is marked as H; (2) performing design on the bottom of a ladle, wherein one half of the bottom of the ladle is high, and the other half of the bottom of the ladle is low to form the shape of a step; the height difference of the step is equal to the height H during the slag entrapment of the molten steel; a nozzle of the ladle is arranged at the low side of the horizontal plane of the bottom of the ladle, the diameter of the nozzle is not less than 40mm; the distance from the center of the nozzle to the center of the bottom of the ladle is (1/3)R-(2/3)R, and R is the radius of the bottom of the ladle. The ladle design method disclosed by the invention has the beneficial effects that reasonably layout is performed on the bottom of the ladle, the bottom of the ladle is designed to be the shape of the step, and the nozzle is arranged at the low side of the horizontal plane of the bottom of the ladle, and thus, the molten steel still has higher depth under the condition that the molten steel is less in the later period of pouring, so that an eddy cannot be easily formed on the molten steel at the nozzle; not only can the slag entrapment of the molten steel be prevented but also the residual quantity of the molten steel is greatly reduced, and the use ratio of the molten steel is effectively improved.
Description
Technical field
The present invention relates to a kind of ladle method for designing, be specifically related to a kind of ladle method for designing preventing molten steel slag, belong to ingot steel casting field.
Background technology
Ladle, as Sheng molten steel equipment, is commonly used to pour into a mould steel ingot.In pouring molten steel link, the bits that often can occur in ladle on liquid level are rolled in steel ingot by molten steel, become serious steel ingot internal soundness defect, the utilization rate of steel ingot is reduced greatly.
Current, prevent molten steel slag often through molten steel height in control ladle, which results in a large amount of molten steel and be wasted, considerably increase production cost.
Summary of the invention
For solving the deficiencies in the prior art, the object of the present invention is to provide a kind of when reducing molten steel amount, effectively can prevent the ladle method for designing of molten steel slag.
In order to realize above-mentioned target, the present invention adopts following technical scheme:
Prevent a ladle method for designing for molten steel slag, it is characterized in that, comprise the following steps:
(1) go out molten steel slag position according to Fluent software simulation, height during molten steel slag is designated as H;
(2) Ladle Bottom is designed, make that Ladle Bottom half is high, half is low in step-like, the difference in height of step equals height H during molten steel slag, and ladle nozzle position is arranged on the low side of Ladle Bottom horizontal plane, mouth of a river diameter>=40mm, center, the mouth of a river to the distance at Ladle Bottom center is
aforementioned R is the radius of Ladle Bottom.
The aforesaid ladle method for designing preventing molten steel slag, is characterized in that, aforementioned Ladle Bottom all adopts refractory brick to lay and forms.
The aforesaid ladle method for designing preventing molten steel slag, it is characterized in that, aforementioned Ladle Bottom adopts refractory brick and stamp mass to lay and forms, and aforementioned stamp mass is laid on the high side of Ladle Bottom horizontal plane and is positioned at bottommost, and the laying of stamp mass highly equals the difference in height of step.
The aforesaid ladle method for designing preventing molten steel slag, is characterized in that, the laying depth >=400mm of the operational layer brick of aforementioned ladle.
The aforesaid ladle method for designing preventing molten steel slag, is characterized in that, the main component of the operational layer brick of aforementioned ladle is magnesia, aluminium oxide and a small amount of carbon, wherein, and content >=90% of magnesia and aluminium oxide.
Usefulness of the present invention is: by carrying out rational deployment to ladle bottom, Ladle Bottom is designed to step-like, position, the mouth of a river is arranged on the low side of Ladle Bottom horizontal plane, when ensure that the phase, molten steel amount was less after being cast, molten steel still has comparatively high depth, makes mouth of a river place molten steel not easily form eddy current, can not only prevent molten steel slag from occurring, and greatly reduce molten steel residual quantity, effectively improve molten steel Utilization rate.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of Fluent software simulation molten steel slag process;
Fig. 2 is the side view of the Ladle Bottom involved by method of the present invention;
Fig. 3 is the top view of the Ladle Bottom in Fig. 2.
The implication of Reference numeral in figure: 1-refractory brick, 2-stamp mass, the 3-mouth of a river.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, concrete introduction is done to the present invention.
The ladle method for designing preventing molten steel slag of the present invention, it comprises the following steps:
One, go out molten steel slag position according to Fluent software simulation, see Fig. 1, height during molten steel slag is designated as H.
Fluent software is used for simulating the Complex Flows be never compressible in highly compressible scope, and it has abundant physical model, can simulate slag phenomenon in pouring molten steel process, and molten steel height when determining slag, for the design of Ladle Bottom provides foundation.
Find through simulation, for more than 20 tons ladles, height during molten steel slag is at more than 100mm.
Two, Ladle Bottom is designed
With reference to Fig. 2 and Fig. 3, Ladle Bottom is designed to half is high, half is low, respectively account for ladle bottom half, in step-like, (for more than 20 tons ladles, the difference in height of step is at more than 100mm for the height H when difference in height of step equals molten steel slag, preferred 100-300mm), the position of ladle nozzle 3 is arranged on the low side of Ladle Bottom horizontal plane, the diameter>=40mm at the mouth of a river 3, and the center at the mouth of a river 3 to the distance at Ladle Bottom center is
wherein, R is the radius of Ladle Bottom.
It is step-like due to Ladle Bottom is designed to, and the position at the mouth of a river 3 is arranged on the low side of Ladle Bottom horizontal plane, when ensure that the phase, molten steel amount was less after being cast, molten steel still has comparatively high depth, the mouth of a river 3 place molten steel is made not easily to form eddy current, can not only prevent molten steel slag from occurring, and greatly reduce molten steel residual quantity, effectively improve molten steel Utilization rate.
Adopt method design of the present invention, build ladle out and be suitable for more than 20 tons steel ladle pourings.In order to make the mouth of a river 3 place molten steel not easily form eddy current, the preferred diameter in the mouth of a river of 20-30 ton ladle is the preferred diameter in the mouth of a river of 40-45mm, 30-60 ton ladle is 45-50mm, and the preferred diameter in the mouth of a river of more than 60 tons ladles is more than 50mm.
Ladle involved by method of the present invention, all adopts refractory brick to lay and forms bottom it, or adopts refractory brick and stamp mass laying to form.Refractory brick is the operational layer brick of ladle.
When the bottom of ladle all adopts refractory brick to lay, can by the difference in height using different brick to mate step.
With reference to Fig. 2, when the bottom of ladle adopts refractory brick 1 and stamp mass 2 to lay, stamp mass 2 is laid on the high side of Ladle Bottom horizontal plane and is positioned at bottommost, and the laying of stamp mass 2 highly equals the difference in height of step.Now, the laying depth >=400mm of the operational layer brick (i.e. refractory brick 1) of ladle
As the preferred scheme of one, the main component of the operational layer brick (i.e. refractory brick 1) of ladle is magnesia, aluminium oxide and a small amount of carbon, wherein, and content >=90% of magnesia and aluminium oxide.
Embodiment 1
Ladle tonnage 25 tons, the difference in height 120mm of ladle bottom step, is adjusted by stamp mass, mouth of a river diameter 42mm, distance Ladle Bottom center 1/3R.
Result shows: in ladle, molten steel slag obviously reduces.
Embodiment 2
Ladle tonnage 45 tons, the difference in height 200mm of ladle bottom step, by choosing the adjustment of different size refractory brick, mouth of a river diameter 48mm, distance Ladle Bottom center 1/2R.
Result shows: in ladle, molten steel slag obviously reduces.
Embodiment 3
Ladle tonnage 70 tons, the difference in height 250mm of ladle bottom step, by choosing the adjustment of different size refractory brick, mouth of a river diameter 60mm, distance Ladle Bottom center 2/3R.
Result shows: in ladle, molten steel slag obviously reduces.
As can be seen here, adopt method for designing of the present invention can not only prevent molten steel slag from occurring, and molten steel residual quantity can be greatly reduced, effectively improve molten steel Utilization rate.
It should be noted that, above-described embodiment does not limit the present invention in any form, the technical scheme that the mode that all employings are equal to replacement or equivalent transformation obtains, and all drops in protection scope of the present invention.
Claims (5)
1. prevent a ladle method for designing for molten steel slag, it is characterized in that, comprise the following steps:
(1) go out molten steel slag position according to Fluent software simulation, height during molten steel slag is designated as H;
(2) Ladle Bottom is designed, make that Ladle Bottom half is high, half is low in step-like, the difference in height of step equals height H during molten steel slag, ladle nozzle (3) position is arranged on the low side of Ladle Bottom horizontal plane, the mouth of a river (3) diameter>=40mm, the mouth of a river (3) center to the distance at Ladle Bottom center is
described R is the radius of Ladle Bottom.
2. the ladle method for designing preventing molten steel slag according to claim 1, is characterized in that, described Ladle Bottom all adopts refractory brick (1) to lay and forms.
3. the ladle method for designing preventing molten steel slag according to claim 1, it is characterized in that, described Ladle Bottom adopts refractory brick (1) and stamp mass (2) to lay and forms, described stamp mass (2) is laid on the high side of Ladle Bottom horizontal plane and is positioned at bottommost, and the laying of stamp mass (2) highly equals the difference in height of step.
4. the ladle method for designing preventing molten steel slag according to claim 3, is characterized in that, the laying depth >=400mm of the operational layer brick of described ladle.
5. the ladle method for designing preventing molten steel slag according to Claims 1-4 any one, is characterized in that, the main component of the operational layer brick of described ladle is magnesia, aluminium oxide and a small amount of carbon, wherein, and content >=90% of magnesia and aluminium oxide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410611773.3A CN104384488A (en) | 2014-11-04 | 2014-11-04 | Ladle design method capable of preventing slag entrapment of molten steel |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410611773.3A CN104384488A (en) | 2014-11-04 | 2014-11-04 | Ladle design method capable of preventing slag entrapment of molten steel |
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| CN104384488A true CN104384488A (en) | 2015-03-04 |
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| CN201410611773.3A Pending CN104384488A (en) | 2014-11-04 | 2014-11-04 | Ladle design method capable of preventing slag entrapment of molten steel |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112560281A (en) * | 2020-12-23 | 2021-03-26 | 中国科学院沈阳自动化研究所 | Method for optimizing airflow separation of electrical-grade magnesium oxide powder based on Fluent |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4746102A (en) * | 1987-03-20 | 1988-05-24 | Bethlehem Steel Corporation | Drain hole design for ladle |
| CN1206638A (en) * | 1997-06-11 | 1999-02-03 | 哈比森－沃克耐火材料公司 | Improved metallurgical furnace and use method |
| US5948349A (en) * | 1989-11-17 | 1999-09-07 | Sollac | Ladle for the preparation of metal provided with a refractory bottom lining and method for producing said refractory bottom lining |
| US20010045692A1 (en) * | 2000-02-08 | 2001-11-29 | Zacharias Donald R. | Molten metal handling vessel |
| US20020153645A1 (en) * | 2001-04-13 | 2002-10-24 | North American Refractories Co. | Refractory lining for metallurgical vessel |
| CN1628007A (en) * | 2002-02-05 | 2005-06-15 | 维苏维尤斯·克鲁斯布公司 | Ladle bottom |
| KR20060038133A (en) * | 2004-10-29 | 2006-05-03 | 주식회사 포스코 | Ladle for preventing slag from discharging |
| CN101513669A (en) * | 2008-02-18 | 2009-08-26 | 北美耐火砖公司 | High Yield Ladle Bottoms |
| CN202343935U (en) * | 2011-12-09 | 2012-07-25 | 武汉钢铁(集团)公司 | Inclined bottom molten steel tank |
| KR20140063718A (en) * | 2011-09-22 | 2014-05-27 | 비수비우스 크루서블 컴패니 | Double entry channel ladle bottom |
-
2014
- 2014-11-04 CN CN201410611773.3A patent/CN104384488A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4746102A (en) * | 1987-03-20 | 1988-05-24 | Bethlehem Steel Corporation | Drain hole design for ladle |
| US5948349A (en) * | 1989-11-17 | 1999-09-07 | Sollac | Ladle for the preparation of metal provided with a refractory bottom lining and method for producing said refractory bottom lining |
| CN1206638A (en) * | 1997-06-11 | 1999-02-03 | 哈比森－沃克耐火材料公司 | Improved metallurgical furnace and use method |
| US20010045692A1 (en) * | 2000-02-08 | 2001-11-29 | Zacharias Donald R. | Molten metal handling vessel |
| US20020153645A1 (en) * | 2001-04-13 | 2002-10-24 | North American Refractories Co. | Refractory lining for metallurgical vessel |
| CN1628007A (en) * | 2002-02-05 | 2005-06-15 | 维苏维尤斯·克鲁斯布公司 | Ladle bottom |
| KR20060038133A (en) * | 2004-10-29 | 2006-05-03 | 주식회사 포스코 | Ladle for preventing slag from discharging |
| CN101513669A (en) * | 2008-02-18 | 2009-08-26 | 北美耐火砖公司 | High Yield Ladle Bottoms |
| KR20140063718A (en) * | 2011-09-22 | 2014-05-27 | 비수비우스 크루서블 컴패니 | Double entry channel ladle bottom |
| CN202343935U (en) * | 2011-12-09 | 2012-07-25 | 武汉钢铁(集团)公司 | Inclined bottom molten steel tank |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112560281A (en) * | 2020-12-23 | 2021-03-26 | 中国科学院沈阳自动化研究所 | Method for optimizing airflow separation of electrical-grade magnesium oxide powder based on Fluent |
| CN112560281B (en) * | 2020-12-23 | 2023-08-01 | 中国科学院沈阳自动化研究所 | Method for separating electrical grade magnesia powder based on Fluent optimized airflow |
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Application publication date: 20150304 |
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