CN104195287A - 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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- CN104195287A CN104195287A CN201410459987.3A CN201410459987A CN104195287A CN 104195287 A CN104195287 A CN 104195287A CN 201410459987 A CN201410459987 A CN 201410459987A CN 104195287 A CN104195287 A CN 104195287A
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- tap hole
- converter
- molten steel
- tapping hole
- described tap
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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 working layer 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 spherical head is connected 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 tapping hole molten steel inlets are formed in the tapping hole working layer, are close to the spherical head and are communicated with the hollow inner cavity. The converter tapping hole has the beneficial effects that eddy slag entrapment at the late stage of tapping can be effectively inhibited by forming the tapping hole molten steel inlets in the side of the tapping hole working layer; besides, erosion of the tapping hole device caused by molten steel can be reduced and eddy formation can be inhibited to some extent by adopting the spherical head at the end, 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, so 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, for the existing more effective means of pre-slag and later stage slag, control, as slide plate slag-blocking apparatus etc., but process slag be there is no to effective ways, controlled.
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 connects a dome head, the one end being positioned at outside described converter shell is tap hole molten steel outlet, on described tap hole working lining, be also provided with a plurality of tap hole molten steel entrances, described tap hole molten steel entrance is all near described dome head setting, and it is inner to be positioned at described converter shell, described tap hole molten steel entrance is communicated with described hollow cavity.
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 entrance curve of described tap hole molten steel entrance is circular or oval.
Further, the quantity of described tap hole molten steel entrance is 4 to 8, and a plurality of described tap hole molten steel entrances arrange around described tap hole working lining uniformly.
Further, the length of described tap hole working lining is longer than described tap hole permanent layer, and described dome head and described tap hole molten steel entrance are all positioned at described tap hole working lining and protrude from the part of described tap hole permanent layer.
Further, described tap hole permanent layer is cylindric.
The present invention has following beneficial effect:
One end that described tap hole working lining stretches in described converter shell is provided with described dome head, on described tap hole working lining, be also provided with a plurality of tap hole molten steel entrances, described tap hole molten steel entrance is all near described dome head setting, compare with traditional tap hole, tap hole molten steel entrance is arranged on to the side of tap hole working lining, can effectively suppress the eddy current slag of tapping latter stage, and, end adopts dome head can reduce the erosion of molten steel to tapping outlet, also in the formation that to a certain degree suppresses eddy current, thereby can improve Cleanliness of Molten Steel.
Accompanying drawing explanation
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 skills, 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 the B-B sectional view of Fig. 3.
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, rather than whole embodiment.Embodiment based in the present invention, all other embodiment that those of ordinary skills 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, label not) 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 with prevent 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, label not), 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 connects a dome head 8, and the one end being positioned at outside described converter shell 1 is tap hole molten steel outlet 3.On described tap hole working lining 4, be also provided with a plurality of tap hole molten steel entrances 7, described tap hole molten steel entrance 7 all arranges near described dome head 8, and is positioned at described converter shell 1 inside, and described tap hole molten steel entrance 7 is communicated with described hollow cavity.; one end of described tap hole working lining 4 is tap hole molten steel outlet 3; the other end is dome head 8; side near described dome head 8 is provided with described tap hole molten steel entrance 7; the side that described tap hole molten steel entrance 7 is arranged on to described tap hole working lining 4, can effectively suppress the eddy current slag of tapping latter stage; And end adopts described dome head 8 can reduce the erosion of molten steel to described tapping outlet A, also in the formation that to a certain degree suppresses eddy current.
As shown in Figure 1 to Figure 4, in this preferred embodiment, the length of described tap hole working lining 4 is longer than described tap hole permanent layer 6, and described dome head 8 and described tap hole molten steel entrance 7 are all positioned at described tap hole working lining 4 and protrude from the part 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 7 sides, facilitates the outflow of molten steel.
As shown in Figure 1 to Figure 4, the entrance curve of described tap hole molten steel entrance 7 is circular or oval, and the bottom of entrance curve approaches described converter lining 2, guarantees that molten steel is drained as far as possible.In this preferred embodiment, the quantity of described tap hole molten steel entrance 7 is 4 to 8, and a plurality of described tap hole molten steel entrances 7 arrange around described tap hole working lining 4 uniformly, guarantee the flow speed stability of tapping, and flow is even.Certainly, in other embodiments, the quantity of described tap hole molten steel entrance 7 also can arrange according to the actual requirements.
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:
Smelting molten steel in converter body completes, described converter shell 1 and described converter lining 2 are to tapping direction rotation, when liquid steel level approaches described tap hole molten steel entrance 7 place, molten steel will flow into from described tap hole molten steel entrance 7, through the hollow cavity of described tap hole working lining 4, from described tap hole molten steel outlet 3, flow out.Compare with traditional tap hole, tap hole molten steel entrance 7 is arranged on to the side of tap hole working lining 4, can effectively suppress the eddy current slag of tapping latter stage, and, dome head 8 can reduce the erosion of molten steel to tapping outlet A, also in the formation that to a certain degree suppresses eddy current, thereby effectively control the process slag of converter tapping, 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 modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (7)
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 connects a dome head, the one end being positioned at outside described converter shell is tap hole molten steel outlet, on described tap hole working lining, be also provided with a plurality of tap hole molten steel entrances, described tap hole molten steel entrance is all near described dome head setting, and it is inner to be positioned at described converter shell, described tap hole molten steel entrance is communicated with described hollow cavity.
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 entrance curve of described tap hole molten steel entrance is for circular or oval.
5. the converter taphole that prevents eddy current slag as described in claim 1 or 4, is characterized in that: the quantity of described tap hole molten steel entrance is 4 to 8, and a plurality of described tap hole molten steel entrances arrange around described tap hole working lining uniformly.
6. the converter taphole that prevents eddy current slag as claimed in claim 1, it is characterized in that: the length of described tap hole working lining is longer than described tap hole permanent layer, described dome head and described tap hole molten steel entrance are all positioned at described tap hole working lining and protrude from the part of described tap hole permanent layer.
7. the converter taphole that prevents eddy current slag as described in claim 1 or 6, is characterized in that: described tap hole permanent layer is cylindric.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410459987.3A CN104195287A (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 |
|---|---|---|---|
| CN201410459987.3A CN104195287A (en) | 2014-09-11 | 2014-09-11 | Converter tapping hole capable of preventing eddy slag entrapment |
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| Publication Number | Publication Date |
|---|---|
| CN104195287A true CN104195287A (en) | 2014-12-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410459987.3A Pending CN104195287A (en) | 2014-09-11 | 2014-09-11 | Converter tapping hole capable of preventing eddy slag entrapment |
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| CN (1) | CN104195287A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107299187A (en) * | 2017-07-28 | 2017-10-27 | 江苏省沙钢钢铁研究院有限公司 | Suppress vortex slag converter taphole and converter |
| 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 |
| CN113122676A (en) * | 2021-04-19 | 2021-07-16 | 辽宁科技大学 | Steel tapping hole brick for reducing vortex suppression slag entrapment in converter steel tapping process and preparation method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4733853A (en) * | 1987-02-17 | 1988-03-29 | Allegheny Ludlum Corporation | Molten metal taphole design to improve yield and cleanliness |
| 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 |
| 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 |
-
2014
- 2014-09-11 CN CN201410459987.3A patent/CN104195287A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4733853A (en) * | 1987-02-17 | 1988-03-29 | Allegheny Ludlum Corporation | Molten metal taphole design to improve yield and cleanliness |
| 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 |
| 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 |
Non-Patent Citations (2)
| 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》, vol. 17, no. 1, 31 March 2005 (2005-03-31), pages 6 - 9 * |
| 张定基: "出钢挡渣技术的新进展", 《炼钢》, no. 5, 31 October 1991 (1991-10-31) * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107299187A (en) * | 2017-07-28 | 2017-10-27 | 江苏省沙钢钢铁研究院有限公司 | Suppress vortex slag converter taphole and converter |
| 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 |
| CN113122676A (en) * | 2021-04-19 | 2021-07-16 | 辽宁科技大学 | Steel tapping hole brick for reducing vortex suppression slag entrapment in converter steel tapping process and preparation method thereof |
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Application publication date: 20141210 |