CN110814328A - High-efficient edulcoration continuous casting tundish - Google Patents
High-efficient edulcoration continuous casting tundish Download PDFInfo
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- CN110814328A CN110814328A CN201911166177.8A CN201911166177A CN110814328A CN 110814328 A CN110814328 A CN 110814328A CN 201911166177 A CN201911166177 A CN 201911166177A CN 110814328 A CN110814328 A CN 110814328A
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- continuous casting
- casting tundish
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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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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D43/00—Mechanical cleaning, e.g. skimming of molten metals
- B22D43/001—Retaining slag during pouring molten metal
- B22D43/002—Retaining slag during pouring molten metal by using floating means
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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
- B22D43/00—Mechanical cleaning, e.g. skimming of molten metals
- B22D43/001—Retaining slag during pouring molten metal
- B22D43/004—Retaining slag during pouring molten metal by using filtering means
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Abstract
The invention provides a high-efficiency impurity-removing continuous casting tundish, wherein a filter wall is vertically arranged in a cavity of the tundish, and the filter wall divides the cavity of the tundish into an impact area and a steel pouring area; a liquid inlet is arranged above the impact area, a flow stabilizer and a bubble generator are arranged on the bottom surface of the impact area, and the flow stabilizer is positioned right below the liquid inlet; the flow stabilizer is of a hollow cylindrical structure with an opening at the top, a plurality of rotational flow grooves are formed in the upper surface of the flow stabilizer along the radial direction of a circle, and a plurality of hemispherical bulges are formed in the bottom wall of the inner side of the flow stabilizer; a plurality of liquid outlets are arranged on the bottom surface of the steel pouring area. According to the invention, the bubble generator is arranged, so that generated bubbles are beneficial to floating of impurities in the molten steel, and the uniformity of the temperature of the molten steel is improved; the molten steel can be further filtered by arranging the filter wall; the flow stabilizer plays a certain role in buffering and stabilizing the molten steel, reduces the generation of turbulence, avoids the direct scouring of the molten steel on the bottom of an impact area, prolongs the service life of the tundish and reduces the maintenance cost of equipment.
Description
Technical Field
The invention relates to the technical field of continuous casting, in particular to a high-efficiency impurity-removing continuous casting tundish.
Background
Modern steel enterprises generally adopt a continuous casting technology in order to improve production efficiency. The tundish is a refractory vessel used in short-run steelmaking, and receives molten steel poured from a ladle first, and then distributes the molten steel to each crystallizer through a tundish nozzle. The tundish is an intermediate link of a steelmaking production flow and is a joint point which is changed from intermittent operation to continuous operation. The tundish as a metallurgical reactor is an important ring for improving the yield and quality of steel.
The tundish has a plurality of types of structures until the tundish is developed, the T-shaped tundish type is still the mainstream, namely the T-shaped tundish type consists of a molten steel impact area and a steel pouring area, the impact area of the tundish type is narrower, when large-ladle molten steel falls, the molten steel violently overturns at the impact area and directly impacts the bottom of the impact area of the tundish, and obvious turbulence can be generated. The violent turbulence in the tundish can destroy the slag stopping layer to roll the steel slag into the molten steel on one hand, and on the other hand, the molten steel is exposed in the air and is secondarily oxidized.
In addition, most of the structures of the continuous casting tundish used at present can only carry out flow division, and do not have the function of filtering and removing impurities from the injected molten steel.
Disclosure of Invention
In order to solve the problems, the invention provides a high-efficiency impurity-removing continuous casting tundish which can effectively reduce the turbulent kinetic energy of molten steel, enable the molten steel to flow stably and can filter and remove impurities from the injected molten steel.
The technical scheme is as follows: the invention provides an efficient impurity-removing continuous casting tundish, wherein a cavity is arranged in the tundish, a filter wall is vertically arranged in the cavity of the tundish, and the filter wall divides the cavity of the tundish into an impact area at the upper part and a steel casting area at the lower part; a liquid inlet is formed above the impact area, a flow stabilizer and a bubble generator are arranged on the bottom surface of the impact area, and the flow stabilizer is positioned right below the liquid inlet; the flow stabilizer is of a hollow cylindrical structure with an opening at the top, a plurality of rotational flow grooves are formed in the upper surface of the flow stabilizer along the radial direction of a circle, and a plurality of hemispherical bulges are formed in the bottom wall of the inner side of the flow stabilizer; a plurality of liquid outlets are formed in the bottom surface of the steel pouring area; and the molten steel injected into the impact area enters the steel pouring area after being filtered by the filter wall and flows into the corresponding external crystallizer through the liquid outlet.
Further, a flow equalizing plate is vertically arranged in the steel pouring area, the steel pouring area is divided into a transition area and a flow equalizing area by the flow equalizing plate, and the transition area is positioned between the impact area and the flow equalizing area; the liquid outlet is positioned on the bottom surface of the flow equalizing area.
Further, the bubble generator is fixed by welding or threaded connection.
Further, be equipped with left backplate on the left side inner wall in impact zone, be equipped with right backplate on the right side inner wall, be equipped with the front fender on the front side inner wall, the both ends of front fender are connected with left backplate and right backplate respectively.
Further, the both ends of backplate are equipped with a plurality of backplate tooth's socket respectively before, the one end that left side backplate and backplate are adjacent is equipped with a plurality ofly and backplate tooth's socket assorted left side backplate tooth, the one end that right side backplate and backplate are adjacent is equipped with a plurality ofly and backplate tooth's socket assorted right side backplate tooth's socket.
Further, the plurality of swirl grooves are uniformly arranged along the radial direction of the circle on the upper surface of the flow stabilizer.
Further, the liquid outlets are arranged at the bottom of the steel pouring area at equal intervals.
Furthermore, each liquid outlet all downwardly extending is provided with a branch material pipe, the upper end of the branch material pipe is connected with the liquid outlet in a sealing manner, and the lower end of the branch material pipe extends into the corresponding crystallizer.
Has the advantages that: according to the invention, the bubble generator is arranged on the bottom surface of the impact area, so that generated bubbles are beneficial to floating of impurities in molten steel, and the uniformity of the temperature of the molten steel is improved; the molten steel can be further filtered by arranging the filter wall; the flow stabilizer is arranged on the bottom surface of the impact area, so that the molten steel is buffered and stabilized to a certain extent, the generation of turbulence is reduced, the molten steel is prevented from directly scouring the bottom of the impact area, the service life of the tundish is prolonged, and the maintenance cost of equipment is reduced.
Drawings
FIG. 1 is a top view of a high-efficiency impurity-removing continuous casting tundish according to the invention;
FIG. 2 is a perspective view of the current stabilizer of the present invention;
FIG. 3 is a top view of a current stabilizer in accordance with the present invention;
FIG. 4 is a cross-sectional view of a current stabilizer in accordance with the present invention;
in the figure, 1, a filter wall, 2, an impact area, 3, a steel pouring area, 4, a flow stabilizer, 5, a bubble generator, 6, a liquid outlet, 7, a rotational flow groove, 8, a hemispherical protrusion, 9, a left guard plate, 10, a right guard plate, 11, a front guard plate, 12, a flow equalizing plate, 13, a transition area and 14, the flow equalizing area.
Detailed Description
The invention provides a high-efficiency impurity-removing continuous casting tundish, which is characterized in that as shown in figure 1, a cavity is arranged in the tundish, a filter wall 1 is vertically arranged in the cavity of the tundish, and the filter wall 1 divides the cavity of the tundish into an impact area 2 at the upper part and a steel casting area 3 at the lower part; a liquid inlet is formed above the impact area 2, a current stabilizer 4 and a bubble generator 5 are arranged on the bottom surface of the impact area 1, and the current stabilizer 4 is positioned right below the liquid inlet; a plurality of liquid outlets 6 are arranged on the bottom surface of the steel casting area 3; the molten steel injected into the impact area 2 enters the steel casting area 3 after being filtered by the filter wall 1 and flows into a crystallizer corresponding to the outside through a liquid outlet 6.
The flow stabilizer 4 is a hollow cylinder structure with an open top, the upper surface of the flow stabilizer is provided with a plurality of cyclone grooves 7 along the radial direction of the circle, and preferably, the plurality of cyclone grooves 7 are uniformly arranged along the radial direction of the upper surface circle of the flow stabilizer 4. The plurality of rotational flow grooves 7 can enable molten steel on the upper part of the current stabilizer 4 to flow in a rotating mode, so that the top of the current stabilizer 4 is prevented from being blocked, and the collision of impurities in the molten steel is facilitated to grow up, and therefore the impurities are favorably floated and removed.
The bottom wall of the inner side of the current stabilizer 4 is provided with the hemispherical bulges 8, the hemispherical bulges 8 play a certain role in buffering and stabilizing the molten steel, the generation of turbulence is reduced, the molten steel is prevented from directly scouring the bottom of an impact area, the service life of a tundish is prolonged, and the maintenance cost of equipment is reduced.
The bubble generator 5 is fixed to the bottom surface of the impact zone by welding or screwing. The bubble generator 5 can generate bubbles, the gas used in the bubble generator is inert gas, the bubbles enable the molten steel to be mixed in the impact area 2, and impurities in the molten steel float up along with the bubbles generated by the bubble generator.
Preferably, be equipped with left backplate 9 on the left side inner wall of impact zone 2, be equipped with right backplate 10 on the right side inner wall, be equipped with front fender 11 on the front side inner wall, the both ends of front fender 11 are connected with left backplate 9 and right backplate 10 respectively. The both ends of front fender 11 are equipped with a plurality of front fender tooth's socket respectively, the one end that left side backplate 9 and front fender 11 are adjacent is equipped with a plurality of left backplate tooth's socket with front fender tooth's socket assorted, the one end that right side backplate 10 and front fender 11 are adjacent is equipped with a plurality of right backplate tooth's socket with front fender tooth's socket assorted. The left guard plate 9, the right guard plate 10 and the front guard plate 11 are made of erosion-resistant and scouring-resistant materials, and the left guard plate 9, the right guard plate 10 and the front guard plate 11 can protect the scouring area 2, so that the service life of the tundish is prolonged, and the maintenance cost of equipment is reduced; the seam crossing between left backplate 9, right backplate 10 and the front fender 11 pegs graft through the tooth's socket, has increased the joint strength between the backplate, prevents to lead to the backplate not hard up because of the molten steel erodees to produce the erosion to the seam play for a long time.
A flow equalizing plate 12 is vertically arranged in the steel pouring area 3, the steel pouring area is divided into a transition area 13 and a flow equalizing area 14 by the flow equalizing plate 12, the transition area 13 is positioned between the impact area 2 and the flow equalizing area 14, and the liquid outlet 6 is positioned on the bottom surface of the flow equalizing area 14. The flow equalizing plate 12 can evenly divide the molten steel into the liquid outlet 6.
Preferably, the liquid outlets 6 are arranged at the bottom of the steel pouring area 3 at equal intervals, each liquid outlet 6 extends downwards to form a material distributing pipe, the upper end of each material distributing pipe is connected with the corresponding liquid outlet 6 in a sealing mode, and the lower end of each material distributing pipe extends into the corresponding crystallizer. The material distributing pipe can accurately distribute the molten steel flowing out of the liquid outlet 6 to an external crystallizer, so that the loss of raw materials is avoided, meanwhile, the injury of workers caused by splashing of the molten steel can be effectively avoided, and the safety production is realized.
Claims (8)
1. The utility model provides a package in middle of high-efficient edulcoration continuous casting, the inside of middle package has the cavity, its characterized in that: a filtering wall is vertically arranged in the cavity of the tundish, and the filtering wall divides the cavity of the tundish into an impact area at the upper part and a steel casting area at the lower part; a liquid inlet is formed above the impact area, a flow stabilizer and a bubble generator are arranged on the bottom surface of the impact area, and the flow stabilizer is positioned right below the liquid inlet; the flow stabilizer is of a hollow cylindrical structure with an opening at the top, a plurality of rotational flow grooves are formed in the upper surface of the flow stabilizer along the radial direction of a circle, and a plurality of hemispherical bulges are formed in the bottom wall of the inner side of the flow stabilizer; a plurality of liquid outlets are formed in the bottom surface of the steel pouring area; and the molten steel injected into the impact area enters the steel pouring area after being filtered by the filter wall and flows into the corresponding external crystallizer through the liquid outlet.
2. The efficient impurity-removing continuous casting tundish according to claim 1, wherein the efficient impurity-removing continuous casting tundish comprises: a flow equalizing plate is vertically arranged in the steel pouring area, the flow equalizing plate divides the steel pouring area into a transition area and a flow equalizing area, and the transition area is positioned between the impact area and the flow equalizing area; the liquid outlet is positioned on the bottom surface of the flow equalizing area.
3. The efficient impurity-removing continuous casting tundish according to claim 1, wherein the efficient impurity-removing continuous casting tundish comprises: the bubble generator is fixed by welding or threaded connection.
4. The efficient impurity-removing continuous casting tundish according to claim 1, wherein the efficient impurity-removing continuous casting tundish comprises: the impact structure is characterized in that a left guard plate is arranged on the inner wall of the left side of the impact area, a right guard plate is arranged on the inner wall of the right side, a front guard plate is arranged on the inner wall of the front side, and two ends of the front guard plate are connected with the left guard plate and the right guard plate respectively.
5. The efficient impurity-removing continuous casting tundish according to claim 4, wherein the efficient impurity-removing continuous casting tundish comprises: the both ends of front fender are equipped with a plurality of front fender tooth's socket respectively, the one end that left side backplate and front fender are adjacent is equipped with a plurality ofly and front fender tooth's socket assorted left backplate tooth's socket, the one end that right side backplate and front fender are adjacent is equipped with a plurality ofly and front fender tooth's socket assorted right backplate tooth's socket.
6. The efficient impurity-removing continuous casting tundish according to claim 1, wherein the efficient impurity-removing continuous casting tundish comprises: the plurality of rotational flow grooves are uniformly arranged along the radial direction of the upper surface circle of the current stabilizer.
7. The efficient impurity-removing continuous casting tundish according to claim 1, wherein the efficient impurity-removing continuous casting tundish comprises: the liquid outlets are arranged at the bottom of the steel pouring area at equal intervals.
8. The efficient impurity-removing continuous casting tundish according to claim 1, wherein the efficient impurity-removing continuous casting tundish comprises: each liquid outlet all downwardly extending is provided with a branch material pipe, the upper end of the branch material pipe is connected with the liquid outlet in a sealing mode, and the lower end of the branch material pipe extends into the corresponding crystallizer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911166177.8A CN110814328A (en) | 2019-11-25 | 2019-11-25 | High-efficient edulcoration continuous casting tundish |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911166177.8A CN110814328A (en) | 2019-11-25 | 2019-11-25 | High-efficient edulcoration continuous casting tundish |
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| CN110814328A true CN110814328A (en) | 2020-02-21 |
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| CN201911166177.8A Pending CN110814328A (en) | 2019-11-25 | 2019-11-25 | High-efficient edulcoration continuous casting tundish |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2446265C (en) * | 2001-05-22 | 2010-07-27 | Vesuvius Crucible Company | Impact pad for dividing and distributing liquid metal flow |
| CN101966577A (en) * | 2010-10-19 | 2011-02-09 | 维苏威高级陶瓷(苏州)有限公司 | Novel continuous casting tundish |
| CA2990601A1 (en) * | 2015-07-02 | 2017-01-05 | Vesuvius Crucible Company | Tundish outlet modifier |
| CN106363159A (en) * | 2016-12-06 | 2017-02-01 | 武汉威林科技股份有限公司 | Continuous casting tundish |
| CN107812929A (en) * | 2017-11-06 | 2018-03-20 | 重庆大学 | A kind of tundish and its turbulence inhibitor |
| CN108247033A (en) * | 2018-01-17 | 2018-07-06 | 武汉科技大学 | A kind of continuous casting production eddy flow filling pipe end |
| CN209407403U (en) * | 2018-12-19 | 2019-09-20 | 江阴华西钢铁有限公司 | A kind of continuous casting production impact zone protection structure |
-
2019
- 2019-11-25 CN CN201911166177.8A patent/CN110814328A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2446265C (en) * | 2001-05-22 | 2010-07-27 | Vesuvius Crucible Company | Impact pad for dividing and distributing liquid metal flow |
| CN101966577A (en) * | 2010-10-19 | 2011-02-09 | 维苏威高级陶瓷(苏州)有限公司 | Novel continuous casting tundish |
| CA2990601A1 (en) * | 2015-07-02 | 2017-01-05 | Vesuvius Crucible Company | Tundish outlet modifier |
| CN106363159A (en) * | 2016-12-06 | 2017-02-01 | 武汉威林科技股份有限公司 | Continuous casting tundish |
| CN107812929A (en) * | 2017-11-06 | 2018-03-20 | 重庆大学 | A kind of tundish and its turbulence inhibitor |
| CN108247033A (en) * | 2018-01-17 | 2018-07-06 | 武汉科技大学 | A kind of continuous casting production eddy flow filling pipe end |
| CN209407403U (en) * | 2018-12-19 | 2019-09-20 | 江阴华西钢铁有限公司 | A kind of continuous casting production impact zone protection structure |
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Application publication date: 20200221 |
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