CN104195288A - Converter tapping hole capable of preventing eddy slag entrapment - Google Patents
Converter tapping hole capable of preventing eddy slag entrapment Download PDFInfo
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- CN104195288A CN104195288A CN201410460156.8A CN201410460156A CN104195288A CN 104195288 A CN104195288 A CN 104195288A CN 201410460156 A CN201410460156 A CN 201410460156A CN 104195288 A CN104195288 A CN 104195288A
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- tap hole
- converter
- molten steel
- tapping hole
- eddy current
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Abstract
The invention relates to a converter tapping hole capable of preventing eddy slag entrapment. The converter tapping hole comprises a converter body and a tapping hole device, wherein the converter body is provided with a converter shell and a converter lining; the tapping hole device is provided with a tapping hole working layer, a tapping hole packing layer and a tapping hole permanent layer; the tapping hole permanent layer is fixed on the converter shell and the converter lining; the tapping hole working layer is arranged in the tapping hole permanent layer in a sleeving manner and is provided with a hollow inner cavity; one end of the tapping hole working layer extends into the converter shell, and the other end of the tapping hole working layer is arranged outside the converter shell; a tapping hole molten steel inlet is formed at the end, in the converter shell, of the hollow inner cavity, and a tapping hole molten steel outlet is formed at the end outside the converter shell; a plurality of axial ribs are arranged on the inner wall of the hollow inner cavity and extend from the tapping hole molten steel inlet to the tapping hole molten steel outlet. Compared with the traditional tapping holes, the axial ribs are arranged on the inner wall of the hollow inner cavity, so that eddy slag entrapment at the late stage of tapping can be effectively inhibited, thus improving the cleanliness of molten steel.
Description
Technical field
The present invention relates to a kind of converter taphole that prevents eddy current slag, belong to converter steeling technology field.
Background technology
Converter steelmaking is topmost method for making steel in the world today, and output of steel accounts for the more than 65% of World Steel ultimate production.Along with market to high-quality steel as the Requirement Increases of auto sheet, the senior deck of boat, electrical steel, stainless steel etc., the Cleanliness of Molten Steel of converter steelmaking is required also more and more higher, therefore the impurity content of molten steel will lack as far as possible.In converter steelmaking latter stage, molten steel is poured into the process of ladle from converter, slag also can be accompanied by molten steel and flow into together in ladle (being slag under converter tapping), affects the cleanliness factor of molten steel.
In converter tapping process, the density that is less than molten steel due to the density of slag swims on liquid steel level, therefore under converter tapping, slag process is generally divided into three parts: pre-slag---and along with the increase of converter inclining angle, slag arrives tap hole position prior to molten steel, produces lower slag in early stage; Process slag---in tapping process, especially the middle and later periods there will be the eddying effect of molten steel, causes eddy current slag phenomenon; In later stage slag---the tapping later stage, along with going out to the greatest extent of molten steel, slag is followed molten steel and is flowed into together ladle.According to statistics, in all lower quantity of slag of converter tapping process, pre-slag accounts for 30%, and process slag accounts for 30%, and later stage slag accounts for 40%.
At present, control for the existing more effective means of pre-slag and later stage slag, as slide plate slag-blocking apparatus etc., controlled but process slag be there is no to effective ways.
Therefore be necessary to design a kind of converter taphole that prevents eddy current slag, to overcome the problems referred to above.
Summary of the invention
The object of the invention is to overcome the defect of prior art, a kind of converter taphole that prevents eddy current slag is provided, can effectively control the process slag of converter tapping, improve Cleanliness of Molten Steel.
The present invention is achieved in that
The invention provides a kind of converter taphole that prevents eddy current slag, comprise converter body and tapping outlet, described converter body has a converter shell and is located at the converter lining of described converter shell inside; Described tapping outlet is located at a side of described converter shell, it has tap hole working lining, tap hole packing layer and tap hole permanent layer, described tap hole permanent layer is fixed on described converter shell and described converter lining, described tap hole working lining is sheathed in described tap hole permanent layer, and described tap hole packing layer is between described tap hole working lining and described tap hole permanent layer; Described tap hole working lining has a hollow cavity, one end of described tap hole working lining is stretched in described converter shell, the other end is positioned at outside described converter shell, one end that described hollow cavity is positioned at described converter shell is tap hole molten steel entrance, the one end being positioned at outside described converter shell is tap hole molten steel outlet, the inwall of described hollow cavity is provided with multiple axial ribs, and described axial ribs is by extremely described tap hole molten steel outlet of described tap hole molten steel entrance extension.
Further, the bottom of described converter shell is cylindrical section, and top is cone section, and described tapping outlet is positioned at the cylindrical section of described converter shell and the junction of cone section.
Further, described hollow cavity is tapered, and its cross-sectional area near described tap hole molten steel outlet side is less than the cross-sectional area near described tap hole molten steel inlet side.
Further, the section of described tap hole molten steel entrance and described tap hole molten steel outlet is that ellipse or stretched wire are linear.
Further, described axial ribs is convexly equipped with and forms to the axis of described hollow cavity by the inwall of described hollow cavity.
Further, the quantity of described axial ribs is 4 to 8, and multiple described axial ribs are uniformly around the inwall setting of described hollow cavity.
Further, the length of described tap hole working lining is identical with the length of described tap hole permanent layer.
Further, described tap hole permanent layer is cylindric.
The present invention has following beneficial effect:
The inwall of described hollow cavity is provided with multiple axial ribs, described axial ribs is by extremely described tap hole molten steel outlet of described tap hole molten steel entrance extension, compared with traditional tap hole, inwall at hollow cavity arranges axial ribs, the eddy current slag of tapping latter stage can be effectively suppressed, thereby Cleanliness of Molten Steel can be improved.
Brief description of the drawings
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
The structural representation of the converter taphole that prevents eddy current slag that Fig. 1 provides for the embodiment of the present invention;
The structural representation of the tapping outlet that Fig. 2 provides for the embodiment of the present invention;
The sectional view of the tapping outlet that Fig. 3 provides for the embodiment of the present invention;
Fig. 4 is that the B of Fig. 3 is to view.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiment.Based on the embodiment in the present invention, all other embodiment that those of ordinary skill in the art obtain under the prerequisite of not making creative work, belong to the scope of protection of the invention.
As shown in Figure 1 to Figure 4, the embodiment of the present invention provides a kind of converter taphole that prevents eddy current slag, comprise that converter body (illustrates, not label) and tapping outlet A, described converter body has a converter shell 1 and is located at the converter lining 2 of described converter shell 1 inside, and described converter lining 2 is covered in the internal surface of described converter shell 1.The bottom of described converter shell 1 is cylindrical section, and top is cone section.
As shown in Figure 1 to Figure 4, described tapping outlet A is located at a side of described converter shell 1, and in this preferred embodiment, described tapping outlet A is positioned at the cylindrical section of described converter shell 1 and the junction of cone section.
As shown in Figure 1 to Figure 4, described tapping outlet A has tap hole working lining 4, tap hole packing layer 5 and tap hole permanent layer 6.Described tap hole permanent layer 6 is fixed on described converter shell 1 and described converter lining 2, and in this preferred embodiment, described tap hole permanent layer 6 is cylindric.Described tap hole working lining 4 is sheathed in described tap hole permanent layer 6, and described tap hole packing layer 5 is between described tap hole working lining 4 and described tap hole permanent layer 6, for fixing tap hole working lining 4 and preventing that molten steel from exosmosing.
As shown in Figure 1 to Figure 4, described tap hole working lining 4 has a hollow cavity and (illustrates, not label), one end of described tap hole working lining 4 is stretched in described converter shell 1, the other end is positioned at outside described converter shell 1, one end that described hollow cavity is positioned at described converter shell 1 is tap hole molten steel entrance 8, and the one end being positioned at outside described converter shell 1 is tap hole molten steel outlet 3.The inwall of described hollow cavity is provided with multiple axial ribs 7, and described axial ribs 7 extends to described tap hole molten steel outlet 3 by described tap hole molten steel entrance 8.Described axial ribs 7 is convexly equipped with and forms to the axis of described hollow cavity by the inwall of described hollow cavity.In this preferred embodiment, the quantity of described axial ribs 7 is 4 to 8, and multiple described axial ribs 7, uniformly around the inwall setting of described hollow cavity, are guaranteed the flow speed stability of tapping, and flow is even.Certainly, in other embodiments, the quantity of described axial ribs 7 also can arrange according to the actual requirements, is mainly to be decided by the size of tapping outlet A.Compared with traditional tap hole, at the inwall of hollow cavity, axial ribs 7 is set, the eddy current slag of tapping latter stage can be effectively suppressed, thereby Cleanliness of Molten Steel can be improved.
As shown in Figure 1 to Figure 4, in this preferred embodiment, the length of described tap hole working lining 4 is identical with the length of described tap hole permanent layer 6.Described hollow cavity is tapered, and described hollow cavity is through type, and its cross-sectional area near described tap hole molten steel outlet 3 sides is less than the cross-sectional area near described tap hole molten steel entrance 8 sides, facilitates the outflow of molten steel.In this preferred embodiment, the section of described tap hole molten steel entrance 8 and described tap hole molten steel outlet 3 is that ellipse or stretched wire are linear, can be in the eddy current slag that to a certain degree suppresses to tap latter stage.
As shown in Figure 1 to Figure 4, the principle of work of converter taphole that prevents eddy current slag described in is as follows:
After the smelting molten steel in converter body completes, described converter shell 1 and described converter lining 2 are to tapping direction rotation, in the time that liquid steel level approaches out described steel mouth molten steel entrance 8 place, molten steel will flow into from tap hole molten steel entrance 8, through the hollow cavity of described tap hole working lining 4, flow out from described tap hole molten steel outlet 3.Compared with traditional tap hole, axial ribs 7 is set on the inwall of the hollow cavity in tap hole working lining 4, can effectively suppress the eddy current slag of tapping latter stage, and tap hole molten steel entrance 8 and tap hole molten steel outlet 3 places adopt ellipse or catenary tee section, also can be in the formation that to a certain degree suppresses eddy current, thereby the process slag of effectively having controlled converter tapping, has improved Cleanliness of Molten Steel.
The foregoing is only preferred embodiment of the present invention, in order to limit the present invention, within the spirit and principles in the present invention not all, any amendment of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (8)
1. a converter taphole that prevents eddy current slag, is characterized in that, comprises converter body and tapping outlet, and described converter body has a converter shell and is located at the converter lining of described converter shell inside;
Described tapping outlet is located at a side of described converter shell, it has tap hole working lining, tap hole packing layer and tap hole permanent layer, described tap hole permanent layer is fixed on described converter shell and described converter lining, described tap hole working lining is sheathed in described tap hole permanent layer, and described tap hole packing layer is between described tap hole working lining and described tap hole permanent layer;
Described tap hole working lining has a hollow cavity, one end of described tap hole working lining is stretched in described converter shell, the other end is positioned at outside described converter shell, one end that described hollow cavity is positioned at described converter shell is tap hole molten steel entrance, the one end being positioned at outside described converter shell is tap hole molten steel outlet, the inwall of described hollow cavity is provided with multiple axial ribs, and described axial ribs is by extremely described tap hole molten steel outlet of described tap hole molten steel entrance extension.
2. the converter taphole that prevents eddy current slag as claimed in claim 1, is characterized in that: the bottom of described converter shell is cylindrical section, and top is cone section, and described tapping outlet is positioned at the cylindrical section of described converter shell and the junction of cone section.
3. the converter taphole that prevents eddy current slag as claimed in claim 1, is characterized in that: described hollow cavity is tapered, and its cross-sectional area near described tap hole molten steel outlet side is less than the cross-sectional area near described tap hole molten steel inlet side.
4. the converter taphole that prevents eddy current slag as claimed in claim 1, is characterized in that: the section of described tap hole molten steel entrance and described tap hole molten steel outlet is that ellipse or stretched wire are linear.
5. the converter taphole that prevents eddy current slag as claimed in claim 1, is characterized in that: described axial ribs is convexly equipped with and forms to the axis of described hollow cavity by the inwall of described hollow cavity.
6. the converter taphole that prevents eddy current slag as described in claim 1 or 5, is characterized in that: the quantity of described axial ribs is 4 to 8, and multiple described axial ribs are uniformly around the inwall setting of described hollow cavity.
7. the converter taphole that prevents eddy current slag as claimed in claim 1, is characterized in that: the length of described tap hole working lining is identical with the length of described tap hole permanent layer.
8. the converter taphole that prevents eddy current slag as described in claim 1 or 7, is characterized in that: described tap hole permanent layer is cylindric.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410460156.8A CN104195288A (en) | 2014-09-11 | 2014-09-11 | Converter tapping hole capable of preventing eddy slag entrapment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410460156.8A CN104195288A (en) | 2014-09-11 | 2014-09-11 | Converter tapping hole capable of preventing eddy slag entrapment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104195288A true CN104195288A (en) | 2014-12-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410460156.8A Pending CN104195288A (en) | 2014-09-11 | 2014-09-11 | Converter tapping hole capable of preventing eddy slag entrapment |
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| CN (1) | CN104195288A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107760820A (en) * | 2017-12-08 | 2018-03-06 | 马鞍山市雨山冶金新材料有限公司 | A kind of plum blossom tapping hole assembly brick |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2455416Y (en) * | 2000-11-23 | 2001-10-24 | 浙江省长兴煤山耐火有限公司 | Vortex-proof runner of bakie for continuous casting |
| CN2565566Y (en) * | 2002-09-13 | 2003-08-13 | 万恩同 | No eddy water gap |
| JP2004339556A (en) * | 2003-05-14 | 2004-12-02 | Shinagawa Refract Co Ltd | Structure for preventing entanglement of slag into sleeve brick in steel tapping hole in converter |
| CN1876560A (en) * | 2006-07-03 | 2006-12-13 | 钟良才 | Vortex-preventing water gap |
| CN102337376A (en) * | 2010-07-14 | 2012-02-01 | 东北大学 | Vortex suppressing steel-tapping hole for converter |
| CN102398004A (en) * | 2011-11-29 | 2012-04-04 | 中冶南方工程技术有限公司 | Sliding waterslot device capable of preventing vortex |
| CN203316713U (en) * | 2013-06-19 | 2013-12-04 | 宜兴新威利成耐火材料有限公司 | Falling-off and vortex prevention fixed nozzle device |
-
2014
- 2014-09-11 CN CN201410460156.8A patent/CN104195288A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2455416Y (en) * | 2000-11-23 | 2001-10-24 | 浙江省长兴煤山耐火有限公司 | Vortex-proof runner of bakie for continuous casting |
| CN2565566Y (en) * | 2002-09-13 | 2003-08-13 | 万恩同 | No eddy water gap |
| JP2004339556A (en) * | 2003-05-14 | 2004-12-02 | Shinagawa Refract Co Ltd | Structure for preventing entanglement of slag into sleeve brick in steel tapping hole in converter |
| CN1876560A (en) * | 2006-07-03 | 2006-12-13 | 钟良才 | Vortex-preventing water gap |
| CN102337376A (en) * | 2010-07-14 | 2012-02-01 | 东北大学 | Vortex suppressing steel-tapping hole for converter |
| CN102398004A (en) * | 2011-11-29 | 2012-04-04 | 中冶南方工程技术有限公司 | Sliding waterslot device capable of preventing vortex |
| CN203316713U (en) * | 2013-06-19 | 2013-12-04 | 宜兴新威利成耐火材料有限公司 | Falling-off and vortex prevention fixed nozzle device |
Non-Patent Citations (1)
| Title |
|---|
| 万恩同: "无漩涡出钢技术的研究", 《武汉工程职业技术学院学报》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107760820A (en) * | 2017-12-08 | 2018-03-06 | 马鞍山市雨山冶金新材料有限公司 | A kind of plum blossom tapping hole assembly brick |
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Application publication date: 20141210 |