CN112620622A - Ladle drainage sand separator and tundish - Google Patents
Ladle drainage sand separator and tundish Download PDFInfo
- Publication number
- CN112620622A CN112620622A CN202011461612.2A CN202011461612A CN112620622A CN 112620622 A CN112620622 A CN 112620622A CN 202011461612 A CN202011461612 A CN 202011461612A CN 112620622 A CN112620622 A CN 112620622A
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- China
- Prior art keywords
- sand
- molten steel
- ladle
- tundish
- pipe
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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
- B22D41/14—Closures
- B22D41/44—Consumable closure means, i.e. closure means being used only once
-
- 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)
- Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
Abstract
The invention relates to the technical field of ladle drainage, in particular to a ladle drainage sand separation device and a tundish. The device includes: the sand collecting groove, the molten steel through pipe and the guide inclined plane structure; the molten steel through pipe penetrates through the bottom of the sand collection groove and is connected with the sand collection groove in a sealing manner; the guide slope structure is arranged at the top of the molten steel through pipe. When the ladle drainage operation is performed, the ladle drainage sand separation device needs to be arranged on the tundish in advance, the guide inclined plane structure is arranged above the molten steel through pipe, when the molten steel is guided by the drainage sand to enter the tundish from the ladle long nozzle, the drainage sand falls into the sand collecting groove through the guide inclined plane structure, and when the high-temperature molten steel contacts the guide inclined plane structure, the high-temperature molten steel can directly puncture the guide inclined plane structure, so that the high-temperature molten steel enters the ladle body of the tundish through the molten steel through pipe, the drainage sand is prevented from entering the tundish, and the purity of the molten steel is improved.
Description
Technical Field
The invention relates to the technical field of ladle drainage, in particular to a ladle drainage sand separation device and a tundish.
Background
With the continuous development of high-end manufacturing industry, the requirement on the quality of raw materials is gradually increased, and the production of ultra-pure steel is always an important task in front of metallurgy people. In the prior continuous casting production process, the drainage sand is still adopted to drain the molten steel in the molten steel casting ladle in the casting process so as to ensure the self-opening of the ladle, so that the drainage sand is brought into the molten steel in the tundish, secondary pollution is caused to the molten steel, and the purity of the molten steel is influenced.
Therefore, how to improve the purity of molten steel is a technical problem which needs to be solved urgently at present.
Disclosure of Invention
The invention aims to provide a steel ladle drainage sand separating device and a tundish, which are used for removing drainage sand in the tundish.
In order to achieve the above object, the embodiments of the present invention provide the following solutions:
in a first aspect, an embodiment of the present invention provides a ladle drainage sand separation apparatus, including:
the sand collecting groove, the molten steel through pipe and the guide inclined plane structure;
the molten steel through pipe penetrates through the bottom of the sand collection groove and is connected with the sand collection groove in a sealing manner;
the guide inclined plane structure is arranged at the top of the molten steel through pipe.
In a possible embodiment, the outer wall of the sand collecting groove is provided with a protruding part so as to erect the ladle drainage sand separating device on a tundish.
In one possible embodiment, the horizontal cross-sectional shape of the guide slope structure is matched with that of the sand catch groove, so that the guide slope structure can uniformly guide drainage sand into the sand catch groove.
In a possible embodiment, the guide ramp structure is an elliptical cone; the minor axis of the bottom profile of the inner side of the elliptic cone is larger than the outer diameter of the molten steel through pipe; and a support frame is arranged in the elliptic cone so as to erect the elliptic cone at the top of the molten steel through pipe.
In a possible embodiment, the guide ramp structure is an iron guide ramp structure or a paper guide ramp structure.
In a second aspect, an embodiment of the present invention provides a tundish, including: be equipped with the through-hole in ladle long mouth of a river below position on the be covered with and inclusion, still include: a ladle drainage sand separation device;
the ladle drainage sand separation device is arranged on the ladle cover;
the ladle drainage sand separation device comprises: the sand collecting groove, the molten steel through pipe and the guide inclined plane structure;
the molten steel through pipe penetrates through the bottom of the sand collection groove and is connected with the sand collection groove in a sealing manner;
the guide inclined surface structure is arranged at the top of the molten steel through pipe and is positioned at a set position below the ladle long nozzle.
In a possible embodiment, the outer wall of the sand collecting groove is provided with a protruding part; a concave part is arranged at the top of the side wall of the tundish; the concave part is matched with the protruding part to erect the ladle drainage sand separation device.
In one possible embodiment, the top surface of the protrusion is flush with the top surface of the side wall of the tundish.
In one possible embodiment, the horizontal cross-sectional shape of the guide slope structure is matched with that of the sand catch groove, so that the guide slope structure can uniformly guide drainage sand into the sand catch groove.
In a possible embodiment, the guide ramp structure is an elliptical cone; the minor axis of the bottom profile of the inner side of the elliptic cone is larger than the outer diameter of the molten steel through pipe; and a support frame is arranged in the elliptic cone so as to erect the elliptic cone at the top of the molten steel through pipe.
Compared with the prior art, the invention has the following advantages and beneficial effects:
when the ladle drainage operation is performed, the ladle drainage sand separation device needs to be arranged on the tundish in advance, the guide inclined plane structure is arranged above the molten steel through pipe, when the molten steel is guided by the drainage sand to enter the tundish from the ladle long nozzle, the drainage sand falls into the sand collecting groove through the guide inclined plane structure, and when the high-temperature molten steel contacts the guide inclined plane structure, the high-temperature molten steel can directly puncture the guide inclined plane structure, so that the high-temperature molten steel enters the ladle body of the tundish through the molten steel through pipe, the drainage sand is prevented from entering the tundish, and the purity of the molten steel is improved.
Drawings
In order to more clearly illustrate the embodiments of the present specification or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present specification, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a ladle drainage sand separation device according to an embodiment of the invention;
FIG. 2 is a side view of a tundish according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a front view direction of a tundish according to an embodiment of the present invention.
Description of reference numerals: the device comprises a ladle drainage sand separation device 1, a sand collecting groove 11, a molten steel through pipe 12, a guide inclined surface structure 13, a protruding part 14, a tundish 2, a ladle cover 21, a ladle body 22, a sunken part 23 and a ladle long nozzle 3.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments, and all other embodiments obtained by those skilled in the art based on the embodiments of the present invention belong to the scope of protection of the embodiments of the present invention.
Referring to fig. 1, fig. 1 is a schematic structural diagram of an embodiment of a ladle drainage sand separation apparatus, which specifically includes:
a sand collection groove 11, a molten steel through pipe 12 and a guide inclined surface structure 13; wherein, the molten steel through pipe 12 penetrates through the bottom of the sand collection groove 11 and is connected with the sand collection groove 11 in a sealing way; the guide slope structure 13 is arranged on the top of the steel-through pipe 12.
Preferably, the molten steel through pipe 12 vertically passes through the center of the bottom of the sand trap 11, and the top height of the guide slope structure 13 should be lower than that of the sand trap 11.
In the embodiment, when the ladle drainage operation is performed, the ladle drainage sand separation device 1 needs to be arranged on the ladle cover 21 of the tundish 2 in advance, when the drainage sand guides molten steel to enter the tundish 2 from the ladle long nozzle 3, the drainage sand falls into the sand collecting groove 11 through the guide of the guide inclined surface structure 13, and when high-temperature molten steel contacts the guide inclined surface structure 13, the high-temperature molten steel can directly puncture the guide inclined surface structure 13, so that the molten steel enters the ladle body 22 of the tundish 2 through the molten steel through pipe 12, the drainage sand is prevented from entering the tundish 2, and the purity of the molten steel is improved. When the ladle drainage operation needs to be continuously carried out, the ladle continuous drainage operation for separating the drainage sand can be quickly realized only by replacing the guide inclined surface structure 13 before each drainage operation.
In a possible embodiment, the outer wall of the sand trap 11 is provided with a protrusion 14 to mount the ladle drainage sand separation device 1 on the body 22 of the tundish 2.
In order to facilitate the installation of the ladle drainage sand separation device 1 on the ladle body 22 of the tundish 2, in this embodiment, the ladle drainage sand separation device 1 can be directly supported on the ladle body 22 by using the protruding portion 14, or the corresponding recessed portion 23 is arranged at the top of the sidewall of the ladle body 22, and the ladle drainage sand separation device 1 is erected on the ladle body 22 by matching the protruding portion 14 with the recessed portion 23.
In the present invention, the guiding bevel structure 13 is a key for diversion of the drainage sand and the molten steel, and may be an iron guiding bevel structure or a paper guiding bevel structure. In order to enable the guide slope structure 13 to uniformly guide the drainage sand into the sand trap 11, the horizontal cross-sectional shape of the guide slope structure 13 is matched with that of the sand trap 11.
For example, the horizontal cross-sectional shape of the sand trap 11 is circular, and the horizontal cross-sectional shape of the guide slope structure 13 is also circular by adopting a conical structure; the horizontal cross section of the sand collecting groove 11 is rectangular, and the guide slope structure 13 is a rectangular pyramid structure, and the horizontal cross section is also rectangular.
The invention considers that the ladle long nozzle 3 above the guide inclined plane structure 13 sometimes swings left and right along the fixed direction when the ladle long nozzle is in normal long axis and work, and in order to ensure the drainage effect of the guide inclined plane structure 13 under the condition, the guide inclined plane structure 13 is an elliptic cone. Meanwhile, the major axis of the inner bottom surface of the elliptical cone is consistent with the swing direction of the ladle long nozzle 3, and the minor axis of the inner bottom profile of the elliptical cone is larger than the outer diameter of the molten steel through pipe 12, so that the liquid inlet end of the molten steel through pipe 12 is completely covered, and in addition, a support frame is arranged in the elliptical cone to stably erect the elliptical cone at the top of the molten steel through pipe 12. Of course, in order to further improve the connection stability between the guiding slope structure 13 and the molten steel through pipe 12, a snap structure may be provided on the molten steel through pipe 12 to lock the support frame.
Because the strength of the guiding inclined plane structure 13 needs to ensure that the guiding inclined plane structure cannot be broken by drainage sand and needs to ensure that the guiding inclined plane structure directly melts when contacting molten steel, the invention provides a better guiding inclined plane structure 13 after multiple tests:
the thickness of the guiding inclined plane structure 13 ranges from 0.5mm to 1mm, the distance from the top of the guiding inclined plane structure 13 to the outlet of the ladle long nozzle 3 should be kept between 10mm and 20mm, and the included angle between the guiding inclined plane of the guiding inclined plane structure 13 and the horizontal plane cannot exceed 45 degrees.
Based on the same inventive concept as the method, the embodiment of the invention also provides a tundish. As shown in fig. 2, which is a schematic structural diagram of the embodiment along a side view direction, and fig. 3 is a schematic structural diagram of the embodiment along a front view direction, the tundish 2 includes: ladle cover 21 and inclusion 22, be equipped with the through-hole in ladle long nozzle 3 below position on the ladle cover 21, this middle package 2 still includes: ladle drainage sand separator 1.
A sand collection groove 11, a molten steel through pipe 12 and a guide inclined surface structure 13; wherein, the molten steel through pipe 12 penetrates through the bottom of the sand collection groove 11 and is connected with the sand collection groove 11 in a sealing way; the guide slope structure 13 is arranged at the top of the molten steel through pipe 12 and is positioned at a set position below the ladle nozzle 3.
Preferably, the molten steel through pipe 12 vertically passes through the center of the bottom of the sand trap 11, and the top height of the guide slope structure 13 should be lower than that of the sand trap 11.
In the embodiment, when the ladle drainage operation is performed, the ladle drainage sand separation device 1 needs to be arranged on the ladle cover 21 of the tundish 2 in advance, then the tundish 2 is placed on the tundish 2 trolley for baking, the tundish 2 is moved to the casting position by the tundish trolley when casting is performed after baking is finished, casting is performed on the ladle, and at the moment, molten steel in the ladle passes through the ladle upper nozzle, the ladle lower nozzle and the ladle long nozzle 3 under the guidance of drainage sand. When the drainage sand guides the molten steel to enter the tundish 2 from the ladle long nozzle 3, the drainage sand falls into the sand collecting groove 11 under the guidance of the guide inclined surface structure 13, and the high-temperature molten steel directly breaks through the guide inclined surface structure 13 when contacting the guide inclined surface structure 13, so that the high-temperature molten steel enters the ladle body 22 of the tundish 2 through the molten steel through pipe 12, the drainage sand is prevented from entering the tundish 2, and the purity of the molten steel is improved.
In a possible embodiment, the outer wall of the sand trap 11 is provided with a protrusion 14; the inner wall of the through hole is provided with a concave part 23 inwards; the top of the side wall of the ladle body 22 of the tundish 2 is provided with a concave part to erect the ladle drainage sand separation device 1.
In order to facilitate the installation of the ladle drainage sand separation device 1 on the ladle body 22 of the tundish 2, in the embodiment, the concave part 23 is arranged at the top of the side wall of the ladle body 22, and the ladle drainage sand separation device 1 is erected on the ladle body 22 through the matching of the protruding part 14 and the concave part 23.
Preferably, the top surface of the protrusion 14 is flush with the top surface of the side wall of the tundish 2, in order not to interfere with the normal sealing use of the pack cover 21.
In the present invention, the guiding bevel structure 13 is a key for diversion of the drainage sand and the molten steel, and may be an iron guiding bevel structure or a paper guiding bevel structure. In order to enable the guide slope structure 13 to uniformly guide the drainage sand into the sand trap 11, the horizontal cross-sectional shape of the guide slope structure 13 is matched with that of the sand trap 11.
For example, the horizontal cross-sectional shape of the sand trap 11 is circular, and the horizontal cross-sectional shape of the guide slope structure 13 is also circular by adopting a conical structure; the horizontal cross section of the sand collecting groove 11 is rectangular, and the guide slope structure 13 is a rectangular pyramid structure, and the horizontal cross section is also rectangular.
The invention considers that the ladle long nozzle 3 above the guide inclined plane structure 13 sometimes swings left and right along the fixed direction when the ladle long nozzle is in normal long axis and work, and in order to ensure the drainage effect of the guide inclined plane structure 13 under the condition, the guide inclined plane structure 13 is an elliptic cone. Meanwhile, the major axis of the inner bottom surface of the elliptical cone is consistent with the swing direction of the ladle long nozzle 3, and the minor axis of the inner bottom profile of the elliptical cone is larger than the outer diameter of the molten steel through pipe 12, so that the liquid inlet end of the molten steel through pipe 12 is completely covered, and in addition, a support frame is arranged in the elliptical cone to stably erect the elliptical cone at the top of the molten steel through pipe 12. Of course, in order to further improve the connection stability between the guiding slope structure 13 and the molten steel through pipe 12, a snap structure may be provided on the molten steel through pipe 12 to lock the support frame.
Because the strength of the guiding inclined plane structure 13 needs to ensure that the guiding inclined plane structure cannot be broken by drainage sand and needs to ensure that the guiding inclined plane structure directly melts when contacting molten steel, the invention provides a better guiding inclined plane structure 13 after multiple tests:
the thickness of the guiding inclined plane structure 13 ranges from 0.5mm to 1mm, the distance from the top of the guiding inclined plane structure 13 to the outlet of the ladle long nozzle 3 should be kept between 10mm and 20mm, and the included angle between the guiding inclined plane of the guiding inclined plane structure 13 and the horizontal plane cannot exceed 45 degrees.
The technical scheme provided by the embodiment of the invention at least has the following technical effects or advantages:
in the embodiment of the invention, when the ladle drainage operation is carried out, the ladle drainage sand separation device needs to be arranged on the tundish in advance, the guide inclined plane structure is arranged above the molten steel through pipe, when the drainage sand guides the molten steel to enter the tundish from the ladle long nozzle, the drainage sand falls into the sand collecting groove through the guide inclined plane structure, and when the high-temperature molten steel contacts the guide inclined plane structure, the high-temperature molten steel can directly puncture the guide inclined plane structure, so that the molten steel enters the ladle body of the tundish through the molten steel through pipe, the drainage sand is prevented from entering the tundish, and the purity of the molten steel is improved.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (10)
1. The utility model provides a ladle drainage sand separator which characterized in that includes:
the sand collecting groove, the molten steel through pipe and the guide inclined plane structure;
the molten steel through pipe penetrates through the bottom of the sand collection groove and is connected with the sand collection groove in a sealing manner;
the guide inclined plane structure is arranged at the top of the molten steel through pipe.
2. The ladle drainage sand separation device according to claim 1, wherein a protrusion is provided on an outer wall of the sand trap to mount the ladle drainage sand separation device on a tundish.
3. The ladle drainage sand separation device according to claim 1, wherein the horizontal cross-sectional shape of the guide slope structure is matched with the horizontal cross-sectional shape of the sand catch basin so that the guide slope structure can uniformly guide drainage sand into the sand catch basin.
4. The ladle drainage sand separation device according to claim 1, wherein the guide slope structure is an elliptical cone; the minor axis of the bottom profile of the inner side of the elliptic cone is larger than the outer diameter of the molten steel through pipe; and a support frame is arranged in the elliptic cone so as to erect the elliptic cone at the top of the molten steel through pipe.
5. The ladle drainage sand separation device according to claim 1, wherein the guide slope structure is an iron guide slope structure or a paper guide slope structure.
6. A tundish, comprising: be covered with and inclusion, be equipped with the through-hole in ladle long mouth of a river below position on the be covered with, its characterized in that still includes: a ladle drainage sand separation device;
the ladle drainage sand separation device is arranged on the ladle cover;
the ladle drainage sand separation device comprises: the sand collecting groove, the molten steel through pipe and the guide inclined plane structure;
the molten steel through pipe penetrates through the bottom of the sand collection groove and is connected with the sand collection groove in a sealing manner;
the guide inclined surface structure is arranged at the top of the molten steel through pipe and is positioned at a set position below the ladle long nozzle.
7. A tundish according to claim 6, wherein the outer wall of the sand trap is provided with a protrusion; a concave part is arranged at the top of the side wall of the tundish; the concave part is matched with the protruding part to erect the ladle drainage sand separation device.
8. The tundish of claim 7, wherein the top surface of the protrusion is flush with the top surface of the sidewall of the tundish.
9. A tundish according to claim 6, wherein the horizontal cross-sectional shape of the guide ramp structure matches that of the sand trap so that the guide ramp structure can direct drainage sand evenly into the sand trap.
10. A tundish according to claim 6, wherein the lead ramp structure is an elliptical cone; the minor axis of the bottom profile of the inner side of the elliptic cone is larger than the outer diameter of the molten steel through pipe; and a support frame is arranged in the elliptic cone so as to erect the elliptic cone at the top of the molten steel through pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011461612.2A CN112620622A (en) | 2020-12-11 | 2020-12-11 | Ladle drainage sand separator and tundish |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011461612.2A CN112620622A (en) | 2020-12-11 | 2020-12-11 | Ladle drainage sand separator and tundish |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112620622A true CN112620622A (en) | 2021-04-09 |
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ID=75312592
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011461612.2A Pending CN112620622A (en) | 2020-12-11 | 2020-12-11 | Ladle drainage sand separator and tundish |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112620622A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114799149A (en) * | 2022-04-19 | 2022-07-29 | 中天钢铁集团有限公司 | External ladle drainage sand device and drainage method |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT315400B (en) * | 1971-01-08 | 1974-05-27 | Interstop Ag | Device for pouring liquid melt from metallurgical vessels |
| KR19980064556U (en) * | 1997-04-29 | 1998-11-25 | 김종진 | Filler collection device of ladle |
| CN2566959Y (en) * | 2002-09-13 | 2003-08-20 | 谢玉红 | Recoverer for steel ladle drainage agent |
| CN202129423U (en) * | 2011-05-13 | 2012-02-01 | 鞍钢股份有限公司 | Recovery device for ladle drainage agent |
| CN202398806U (en) * | 2011-12-07 | 2012-08-29 | 济南重工股份有限公司 | Novel molten steel pouring funnel |
| KR20130040330A (en) * | 2011-10-14 | 2013-04-24 | 주식회사 포스코 | Apparatus for separating filler of ladle |
| CN105921734A (en) * | 2016-05-13 | 2016-09-07 | 鞍山市华兴冶金炉料有限公司 | Method and device for keeping molten steel clean in casting of continuous casting ladle |
| KR20190072810A (en) * | 2017-12-18 | 2019-06-26 | 주식회사 포스코 | Nozzle device for laddle |
-
2020
- 2020-12-11 CN CN202011461612.2A patent/CN112620622A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT315400B (en) * | 1971-01-08 | 1974-05-27 | Interstop Ag | Device for pouring liquid melt from metallurgical vessels |
| KR19980064556U (en) * | 1997-04-29 | 1998-11-25 | 김종진 | Filler collection device of ladle |
| CN2566959Y (en) * | 2002-09-13 | 2003-08-20 | 谢玉红 | Recoverer for steel ladle drainage agent |
| CN202129423U (en) * | 2011-05-13 | 2012-02-01 | 鞍钢股份有限公司 | Recovery device for ladle drainage agent |
| KR20130040330A (en) * | 2011-10-14 | 2013-04-24 | 주식회사 포스코 | Apparatus for separating filler of ladle |
| CN202398806U (en) * | 2011-12-07 | 2012-08-29 | 济南重工股份有限公司 | Novel molten steel pouring funnel |
| CN105921734A (en) * | 2016-05-13 | 2016-09-07 | 鞍山市华兴冶金炉料有限公司 | Method and device for keeping molten steel clean in casting of continuous casting ladle |
| KR20190072810A (en) * | 2017-12-18 | 2019-06-26 | 주식회사 포스코 | Nozzle device for laddle |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114799149A (en) * | 2022-04-19 | 2022-07-29 | 中天钢铁集团有限公司 | External ladle drainage sand device and drainage method |
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Application publication date: 20210409 |