Continuous casting tundish

Abstract

The utility model discloses a continuous casting tundish which comprises an outer shell, a heat insulation layer, a permanent layer, a working layer and a flow equalizing plate, the heat insulation layer, a first heat insulation plate and a second heat insulation plate are arranged, so that the fire resistance and the high-temperature use performance of the outer side of the heat insulation layer are improved; nanopores which are uniformly distributed in the first impermeable layer and the second impermeable layer have the characteristics of high weather resistance and high dispersity for the outer side of the heat-resistant layer, and the heat-resistant layer is arranged to achieve good heat resistance for the interlayer in the tundish, so that the characteristics of heat resistance, isolation and fast heat dispersion for the permanent layer and the working layer are improved, and the service life of the tundish is prolonged by arranging the heat-resistant layer. Through the arrangement of the upper protection plate and the lower protection plate, high temperature resistance and erosion resistance are achieved, through the arrangement of the first fireproof layer and the second fireproof layer, excellent fire resistance and service life of the high-aluminum thin plate are improved, the erosion resistance of the high-aluminum thin plate is improved through cooperation of the high-aluminum thin plate, and therefore the good heat-resisting effect is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of steel smelting, in particular to a continuous casting tundish. Background Art

[0002] The tundish is a refractory container used in short-process steelmaking. It first receives the molten steel poured from the ladle, and then distributes it to each crystallizer through the tundish water outlet. The tundish is the intermediate link in the steelmaking production process and the connection point from intermittent operation to continuous operation. As a metallurgical reactor, the tundish is an important part of improving steel production and quality. Limited by the capacity requirements of the existing continuous casting tundish, it is difficult to achieve the insulation effect by adding an insulation layer. If the thickness of the lining of the continuous casting tundish is reduced, it will lead to problems such as reduced service life, increased temperature drop rate of molten steel, excessively high temperature of the outer wall of the continuous casting tundish shell, and severe thermal deformation of the shell.

[0003] For example, the publication number CN201210135478.6 discloses "A Continuous Casting Tundish", which replaces the traditional clay insulation layer with a lightweight material with better thermal insulation performance, better resistance to thermal vibration and higher refractoriness; and uses a permanent layer made of a structural and thermal insulation integrated composite refractory material, which integrates structural strength support and thermal insulation, thereby improving the energy-saving effect of the continuous casting tundish and reducing the heat capacity.

[0004] A better heat dissipation effect can be achieved for the tundish by using lightweight materials. However, after long-term use of the tundish, the relatively single lightweight material will reduce the insulation effect inside the tundish, which will cause the working layer of the tundish to collapse, and the refractory material of the working layer will be mixed into the molten steel, seriously affecting the quality of the molten steel. Utility Model Content

[0005] 1. Technical issues to be solved

[0006] In view of the deficiencies in the prior art, the utility model provides a continuous casting tundish to solve the above-mentioned problems.

[0007] (II) Technical solution

[0008] To achieve the above objectives, the utility model is implemented through the following technical solutions: a continuous casting tundish, comprising an outer shell, an insulation layer, a permanent layer, a working layer and a flow equalizing plate, the working layer covers the outer surface of the permanent layer, the flow equalizing plate is installed in the inner middle part of the working layer, the insulation layer covers the outer surface of the outer shell, the permanent layer covers the outer surface of the insulation layer, the insulation layer comprises an insulation board one, an impermeable layer one, a heat-resistant layer, an impermeable layer two and an insulation board two, the insulation board one covers the outer surface of the impermeable layer one, the impermeable layer one covers the outer surface of the heat-resistant layer, the heat-resistant layer covers the outer surface of the impermeable layer two, the impermeable layer two covers the outer surface of the insulation board two, the insulation board two covers the outer surface of the outer shell, and the permanent layer covers the outer surface of the insulation board one.

[0009] Preferably, the heat-resistant layer includes an upper protective plate, a fire-resistant layer one, a high-aluminum thin plate, a fire-resistant layer two and a lower protective plate, the upper protective plate covers the outer surface of the fire-resistant layer one, the fire-resistant layer one covers the outer surface of the high-aluminum thin plate, the high-aluminum thin plate covers the outer surface of the fire-resistant layer two, the fire-resistant layer two covers the outer surface of the lower protective plate, the anti-seepage layer one covers the outer surface of the upper protective plate, and the lower protective plate covers the outer surface of the anti-seepage layer two.

[0010] Preferably, the radii of the insulation board 1 and the insulation board 2 are equal, and the radii of the anti-seepage layer 1 and the anti-seepage layer 2 are equal.

[0011] Preferably, the insulation board 1 and the insulation board 2 are both made of magnesium insulation board material, so that they have excellent fire resistance and high-temperature performance.

[0012] Preferably, the anti-seepage layer one and the anti-seepage layer two are both made of nanoporous silicon powder material, and the surfaces of the anti-seepage layer one and the anti-seepage layer two are provided with evenly distributed nanopores. The evenly distributed nanopores make the anti-seepage layer one and the anti-seepage layer two have the characteristics of strong weather resistance and strong dispersibility.

[0013] Preferably, the first refractory layer and the second refractory layer are both made of graphene material.

[0014] Preferably, the thickness of the high-aluminum thin plate is between 0.15 mm and 2.0 mm.

[0015] (III) Beneficial effects

[0016] The utility model provides a continuous casting tundish, which has the following beneficial effects: by setting a heat insulation layer, the fire resistance and high-temperature performance of the outer side of the heat-resistant layer are improved by setting the heat insulation board 1 and the heat insulation board 2, the outer side of the heat-resistant layer has strong weather resistance and strong dispersion characteristics through the nanopores evenly distributed in the anti-seepage layer 1 and the anti-seepage layer 2, and the internal interlayer of the tundish has good heat resistance through the setting of the heat-resistant layer, thereby improving the heat-resistant isolation of the permanent layer and the working layer and the fast heat dispersion characteristics.

[0017] The utility model provides a continuous casting tundish, which has the following beneficial effects: by setting a heat-resistant layer, the upper protective plate and the lower protective plate have high temperature resistance and corrosion resistance, by setting the first refractory layer and the second refractory layer, the high aluminum sheet has excellent fire resistance and service life, and by matching the high aluminum sheet, the corrosion resistance is improved, thereby achieving a good heat-resistant effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0019] Figure 2 It is a schematic diagram of the planar structure of the utility model;

[0020] Figure 3 This is a schematic diagram of the perspective structure of the heat insulation layer of the utility model;

[0021] Figure 4 This is a schematic diagram of the structure of the heat insulation layer material of the utility model;

[0022] Figure 5 This is a schematic diagram of the heat-resistant layer material structure of the utility model.

[0023] In the figure: outer shell -1, insulation layer -2, permanent layer -3, working layer -4, flow equalizing plate -5, insulation plate 1 -21, anti-seepage layer 1 -22, heat-resistant layer -23, anti-seepage layer 2 -24, insulation plate 2 -25, upper protective plate -231, fire-resistant layer 1 -232, high aluminum thin plate -233, fire-resistant layer 2 -234, lower protective plate -235. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] See also Figure 1 and 2The utility model provides a technical solution for a continuous casting tundish: a continuous casting tundish, comprising an outer shell 1, an insulation layer 2, a permanent layer 3, a working layer 4 and a flow equalizing plate 5, the working layer 4 covers the outer surface of the permanent layer 3, the flow equalizing plate 5 is installed in the inner middle part of the working layer 4, the insulation layer 2 covers the outer surface of the outer shell 1, and the permanent layer 3 covers the outer surface of the insulation layer 2.

[0026] See also Figure 3 and 4 The utility model provides a technical solution for a continuous casting tundish: a continuous casting tundish, the insulation layer 2 includes an insulation board 21, an impermeable layer 22, a heat-resistant layer 23, an impermeable layer 24 and an insulation board 25, the insulation board 21 covers the outer surface of the impermeable layer 22, the impermeable layer 22 covers the outer surface of the heat-resistant layer 23, the heat-resistant layer 23 covers the outer surface of the impermeable layer 24, the impermeable layer 24 covers the outer surface of the insulation board 25, the insulation board 25 covers the outer surface of the outer shell 1, the permanent layer 3 covers the outer surface of the insulation board 21, the insulation The radii of the heat plate 21 and the insulation plate 25 are equal, the radii of the anti-seepage layer 22 and the anti-seepage layer 24 are equal, the insulation plate 21 and the insulation plate 25 are both made of magnesium insulation plate material, so they have excellent fire resistance and high-temperature performance, the anti-seepage layer 22 and the anti-seepage layer 24 are both made of nanoporous silicon powder material, and the surfaces of the anti-seepage layer 22 and the anti-seepage layer 24 are provided with uniformly distributed nanopores, and the uniformly distributed nanopores make the anti-seepage layer 22 and the anti-seepage layer 2 24 have the characteristics of strong weather resistance and strong dispersion.

[0027] See also Figure 5 The utility model provides a technical solution for a continuous casting tundish: a continuous casting tundish, the heat-resistant layer 23 comprises an upper protective plate 231, a refractory layer 1 232, a high-aluminum thin plate 233, a refractory layer 234 and a lower protective plate 235, the upper protective plate 231 covers the outer surface of the refractory layer 1 232, the refractory layer 1 232 covers the outer surface of the high-aluminum thin plate 233, the high-aluminum thin plate 233 covers the outer surface of the refractory layer 234, the refractory layer 234 covers the outer surface of the lower protective plate 235, the anti-seepage layer 1 22 covers the outer surface of the upper protective plate 231, the lower protective plate 235 covers the outer surface of the anti-seepage layer 24, the refractory layer 1 232 and the refractory layer 234 are both made of graphene material, and the thickness of the high-aluminum thin plate 233 is between 0.15mm and 2.0mm.

[0028] When in use, the heat-insulating plate 2 25 of the heat-insulating plate 1 21 improves the fire resistance and high-temperature performance of the outer side of the heat-resistant layer 23, and the nanopores evenly distributed in the anti-seepage layer 1 22 and the anti-seepage layer 2 24 provide the outer side of the heat-resistant layer 23 with strong weather resistance and strong dispersion.

[0029] The upper protective plate 231 and the lower protective plate 235 are provided with high temperature resistance and corrosion resistance. The refractory layer 1 232 and the refractory layer 2 234 are provided to increase the excellent fire resistance and service life of the high-aluminum thin plate 233. The erosion resistance of the high-aluminum thin plate 233 is improved, thereby achieving a good heat-resistant effect, providing good heat resistance to the internal interlayer of the intermediate package, and further improving the heat-resistant isolation and fast heat dispersion characteristics between the outer shell 1, the permanent layer 3 and the working layer 4.

[0030] The control method of the present invention is to control by manually starting and closing the switch. The wiring diagram of the power element and the provision of power supply are common knowledge in the field, and the present invention is mainly used to protect mechanical devices, so the present invention will not explain the control method and wiring arrangement in detail.

[0031] The control method of the present invention is automatic control through a controller. The control circuit of the controller can be realized by simple programming by technicians in this field. The provision of power is also common knowledge in this field. The present invention is mainly used to protect mechanical devices, so the present invention will no longer explain the control method and circuit connection in detail.

[0032] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A continuous casting tundish, comprising an outer shell (1), a permanent layer (3), a working layer (4) and a flow equalizing plate (5), wherein the working layer (4) covers the outer surface of the permanent layer (3), and the flow equalizing plate (5) is installed in the middle of the inner side of the working layer (4); Features: The invention also comprises a heat insulating layer (2), wherein the heat insulating layer (2) covers the outer surface of the outer shell (1), and the permanent layer (3) covers the outer surface of the heat insulating layer (2). The heat insulating layer (2) comprises a heat insulating board (21), an impermeable layer (22), a heat resistant layer (23), an impermeable layer (24) and a heat insulating board (25). The heat insulating board (21) covers the outer surface of the impermeable layer (22), the impermeable layer (22) covers the outer surface of the heat resistant layer (23), the heat resistant layer (23) covers the outer surface of the impermeable layer (24), the impermeable layer (24) covers the outer surface of the heat insulating board (25), the heat insulating board (25) covers the outer surface of the outer shell (1), and the permanent layer (3) covers the outer surface of the heat insulating board (21).

2. The continuous casting tundish according to claim 1, characterized in that: The heat-resistant layer (23) comprises an upper protective plate (231), a fire-resistant layer 1 (232), a high-aluminum thin plate (233), a fire-resistant layer 2 (234) and a lower protective plate (235); the upper protective plate (231) covers the outer surface of the fire-resistant layer 1 (232); the fire-resistant layer 1 (232) covers the outer surface of the high-aluminum thin plate (233); the high-aluminum thin plate (233) covers the outer surface of the fire-resistant layer 2 (234); the fire-resistant layer 2 (234) covers the outer surface of the lower protective plate (235); the anti-seepage layer 1 (22) covers the outer surface of the upper protective plate (231); and the lower protective plate (235) covers the outer surface of the anti-seepage layer 2 (24).

3. The continuous casting tundish according to claim 1, characterized in that: The radii of the insulation board 1 (21) and the insulation board 2 (25) are equal, and the radii of the anti-seepage layer 1 (22) and the anti-seepage layer 2 (24) are equal.

4. The continuous casting tundish according to claim 1, characterized in that: The insulation board 1 (21) and the insulation board 2 (25) are both made of magnesium insulation board material.

5. The continuous casting tundish according to claim 1, characterized in that: The anti-seepage layer 1 (22) and the anti-seepage layer 2 (24) are both made of nanoporous silicon powder material, and the surfaces of the anti-seepage layer 1 (22) and the anti-seepage layer 2 (24) are both provided with uniformly distributed nanopores.

6. The continuous casting tundish according to claim 2, characterized in that: The first refractory layer (232) and the second refractory layer (234) are both made of graphene material.

7. The continuous casting tundish according to claim 2, characterized in that: The thickness of the high-aluminum thin plate (233) is between 0.15 mm and 2.0 mm.

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