Tundish Baking Furnace

Abstract

The present invention provides a tundish bumer, comprising a support frame; a boom structure movably connected to the top of the support frame via a rotating shaft; a first burner fixedly installed at a first end of the boom structure; a pipeline assembly fixedly installed on the boom structure, one end of the pipeline assembly being communicated with the first burner, and the other end of the pipeline assembly being communicated with a gas source; and a movable cover plate fixedly installed at the first end of the boom structure, the movable cover plate being located on one side of the first burner, and a burner hole matching the first burner being provided on the movable cover plate. By using the present invention, when baking the tundish, it is not necessary to manually cover the fireproof cotton on the molten steel receiving hole of the existing ladle cover every time, and it is also necessary to remove it after baking, which can not only save time, manpower and material resources, but also increase the baking temperature, greatly save the gas consumption, and reduce the production cost.

Description

Technical Field

[0001] The present invention belongs to the technical field of continuous casting production in steelmaking, and particularly relates to a tundish baking furnace. Background Art

[0002] The tundish baking furnace is used to heat the lining of the tundish to discharge the moisture in the lining and fully dry it. The tundish cover is divided into three cover plates. When designed, a hole with a length of 1500 mm and a width of 500 mm is generally left in the middle cover plate for inserting the stopper rod during baking for preheating. With the process improvement, the stopper rods in many steel plants do not need on-line baking at present. However, since this hole is still needed when receiving molten steel, in order not to lose heat during baking, it is necessary to manually cover the hole with fireproof cotton each time and remove it after baking, which is very wasteful in terms of time, manpower and material resources. Summary of the Invention

[0003] In view of the above-mentioned disadvantages of the prior art, the purpose of the present invention is to provide a tundish baking furnace, which is used to solve the technical problems such as more heat loss, waste of time, manpower and material resources when the existing tundish baking furnace bakes the tundish.

[0004] To achieve the above object and other related objects, the present invention provides a tundish baking furnace, which comprises:

[0005] A support frame;

[0006] A boom structure, which is movably connected to the top of the support frame via a rotating shaft;

[0007] A first burner, which is fixedly installed at the first end of the boom structure;

[0008] A pipeline assembly, which is fixedly installed on the boom structure. One end of the pipeline assembly is communicated with the first burner, and the other end of the pipeline assembly is communicated with a gas source; and

[0009] A movable cover plate, which is fixedly installed at the first end of the boom structure. The movable cover plate is located on one side of the first burner. A burner hole matching the first burner is provided on the movable cover plate. When baking the tundish, the movable cover plate moves downward with the boom structure to cover the tundish. The movable cover plate and the other cover plates of the tundish jointly form the cover of the tundish to cover the tundish. After baking, the movable cover plate is turned over together with the boom structure.

[0010] Optionally, the tundish baking furnace further comprises a counterweight box, and the counterweight box is connected to the second end of the boom structure.

[0011] Optionally, the tundish burner further includes a driving device connected to the boom structure for driving the boom structure to drive the first burner and the movable cover plate to move up and down.

[0012] Optionally, the driving device includes an electro-hydraulic push rod and a hoist.

[0013] Optionally, at least one side of one end of the movable cover plate close to the support frame is provided with an anti-collision member for preventing the movable cover plate from colliding with other cover plates of the adjacent tundish when moving downward.

[0014] Optionally, the anti-collision member includes a flap which is connected to at least one side of one end of the cover plate close to the support frame by means of hinge.

[0015] Optionally, the movable cover plate includes a baking cover and refractories; the refractories are filled in at least part of the space inside the baking cover, and the refractories cover the periphery of the baking cover.

[0016] Optionally, the baking cover includes a baking cover panel, a peripheral plate and a baking cover reinforcing ring arranged on the baking cover panel; the shapes of the peripheral plate and the baking cover reinforcing ring include a ring shape, and the baking cover reinforcing ring is located on the periphery of the peripheral plate.

[0017] Optionally, the tundish burner further includes a main boom, one end of the main boom is fixedly connected to the boom structure, and the other end of the main boom is a free end; the free end of the main boom includes a burner connection seat for installing and fixing the first burner and a cover plate connection seat for installing and fixing the movable cover plate.

[0018] Optionally, the tundish burner further includes a fire baffle which is fixedly connected to the main boom.

[0019] Optionally, the main boom is fixedly connected to the boom structure by means of welding.

[0020] Using the present invention, by connecting one of the cover plates in the cover of the tundish to the tundish roaster as a movable cover plate, when baking the tundish, the movable cover plate moves downward with the boom structure to cover the tundish, and the movable cover plate and the other cover plates of the tundish together form the cover of the tundish to cover the tundish. After baking, the movable cover plate is turned over together with the boom structure. This design does not require manually covering the fireproof cotton on the existing molten steel receiving hole (stopper baking hole) of the cover every time when baking the tundish, and the fireproof cotton needs to be removed after baking, which not only saves time, manpower and material resources, but also can better achieve capping, improve the baking temperature, greatly save the gas consumption and reduce the production cost; in addition, when receiving molten steel, only need to raise the tundish roaster, and the movable cover plate also raises together with the tundish roaster, and inject molten steel into the tundish through the opening left by the movable cover plate in the tundish cover, without specially setting a molten steel receiving hole on the cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 FIG. is a perspective structural view of the tundish roaster of the present invention.

[0022] Figure 2 FIG. is a front view structural view of the tundish roaster of the present invention.

[0023] Figure 3 FIG. is a top view structural view of the tundish roaster of the present invention.

[0024] Figure 4 is Figure 3 an enlarged view of the region corresponding to the dashed circle in FIG.

[0025] Figure 5 FIG. is a perspective structural view of the tundish roaster when it is raised according to the present invention.

[0026] Figure 6 FIG. is a front view structural view of the tundish roaster when it is raised according to the present invention.

[0027] Figure 7 FIG. is a top view structural view of the tundish roaster when it is raised according to the present invention.

[0028] Figure 8 FIG. is a perspective structural view of the boom of the tundish roaster of the present invention.

[0029] Figure 9 FIG. is a top view structural view of the movable cover plate of the tundish roaster of the present invention.

[0030] Figure 10 is Figure 9 a sectional structural view along the A-A direction in FIG.

[0031] Figure 11 is Figure 9 an enlarged schematic view of the area corresponding to the dotted circle in

[0032] Figure 12 a three-dimensional structural schematic diagram when a refractory is installed in the movable cover of the present invention.

[0033] Figure 13 a bottom view structural schematic diagram when a refractory is installed in the movable cover of the present invention.

[0034] Figure 14 is Figure 13 a sectional structural schematic diagram along the B-B direction in

[0035] Figure 15 is Figure 14 an enlarged schematic view of the area corresponding to the dotted circle in

[0036] Figure 16 a connection structure schematic diagram of the refractory and the movable cover plate in the present invention.

[0037] Element number description

[0038] 1 tundish roaster

[0039] 11 support frame

[0040] 12 boom structure

[0041] 13 pipeline assembly

[0042] 131 pipeline support

[0043] 14 counterweight box

[0044] 15 movable cover plate

[0045] 151 lifting lug

[0046] 152 with the boom main body

[0047] 153 refractory

[0048] 1531 central hole

[0049] 1532 fixing plate

[0050] 154 anti-collision part

[0051] 155 fastener

[0052] 156 baking cover reinforcement ring

[0053] 157 peripheral plate

[0054] 158 baking cover panel

[0055] 16 driving device

[0056] 171 First burner

[0057] 172 Second burner

[0058] 18 Boom

[0059] 181 Burner connection seat

[0060] 182 Cover plate connection seat

[0061] 183 Baffle plate connecting plate

[0062] 184 Connector with bracket

[0063] 185 Welding part

[0064] 186 Boom main body

[0065] 19 Baffle plate

[0066] 2 Tundish

[0067] 31 First cover plate

[0068] 32 Second cover plate

[0069] 33 Stopper hole

[0070] 34 Burner hole Specific embodiments

[0071] The following specific examples illustrate the implementation manners of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation manners. Various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention.

[0072] Please refer to Figures 1 to 16 . It should be noted that the diagrams provided in this embodiment only schematically illustrate the basic concept of the present invention. Although only the components related to the present invention are shown in the diagrams, rather than being drawn according to the number, shape, and size of the components in actual implementation, the form, number, and ratio of each component in actual implementation can be arbitrarily changed, and the component layout pattern may also be more complex.

[0073] As Figures 1 - 4 shown, the present invention provides a tundish roaster 1, and the tundish roaster 1 includes a support frame 11, a boom structure 12, a first burner 171, a pipeline assembly 13, and a movable cover plate 15, wherein, Figure 1 is a three-dimensional structure diagram of the tundish roaster 1 of the present invention, Figure 2The front view structural schematic diagram of the tundish roaster 1 of the present invention, Figure 3 The top view structural schematic diagram of the tundish roaster 1 of the present invention, Figure 4 is Figure 3 The enlarged schematic diagram of the area corresponding to the dashed circle in the figure.

[0074] Specifically, as Figures 1 - 3 shown, the boom structure 12 is movably connected to the top of the support frame 11 via a rotating shaft; the first burner 171 is fixedly installed at the first end of the boom structure 12 (such as Figures 1 - 3 the right end shown); the pipeline assembly 13 is fixedly installed on the boom structure 12, one end of the pipeline assembly 13 is communicated with the first burner 171, and the other end of the pipeline assembly 13 is communicated with a gas source (not shown); the movable cover plate 15 is fixedly installed at the first end of the boom structure 12 (such as Figures 1 - 3 the right side shown), the movable cover plate 15 is located on one side of the first burner 171, and a burner hole 34 matching the first burner 171 is provided on the movable cover plate 15.

[0075] As an example, as Figures 1 - 3 shown, the pipeline assembly 13 includes a pipeline support 131, and the pipeline support 131 is fixedly installed on the boom structure 12.

[0076] As Figures 1 - 3 shown, when baking the tundish 2, the movable cover plate 15 moves downward with the boom structure 12 to cover the tundish 2, and the movable cover plate 15 and other cover plates of the tundish 2 together form the cover of the tundish 2 to cover the tundish 2; Figures 5 - 7 The illustration when the tundish roaster 1 of the present invention is raised, where Figure 5 The three-dimensional structural schematic diagram when the tundish roaster 1 of the present invention is raised, Figure 6 The front view structural schematic diagram when the tundish roaster 1 of the present invention is raised, Figure 7 The top view structural schematic diagram when the tundish roaster 1 of the present invention is raised. When the baking of the tundish 2 is completed or molten steel needs to be received, the movable cover plate 15 is opened together with the boom structure 12.

[0077] As Figure 1 and Figure 2 shown, an example is given where the cover of the tundish 2 includes three cover plates, that is, the movable cover plate 15, the first cover plate 31 and the second cover plate 32. In other embodiments, the cover of the tundish 2 may also only include the movable cover plate 15, or include one, three or more cover plates in addition to the movable cover plate 15, which can be specifically set according to actual situations.

[0078] As an example, such as Figure 1 and Figure 2 shown, the tundish roaster 1 further includes a second burner 172. When the tundish roaster 1 roasts the tundish 2, the first burner 171 is installed on the burner hole 34 of the movable cover plate 15, and the second burner 172 is installed in the burner hole 34 on other cover plates of the tundish 2 (such as Figure 1 and 2 shown, the first cover plate 31 and the second cover plate 32).

[0079] Such as Figure 1 and Figure 2 shown, the number of the first burner 171 and the second burner 172 is two. Of course, in other embodiments, the number of the first burner 171 and the second burner 172 can be flexibly set; for example, it can be ensured that the sum of the first burner 171 and the second burner 172 is an even number, and two of them form a group to alternately roast the tundish 2.

[0080] As an example, such as Figure 1 and Figure 2 shown, a stopper rod hole 33 for inserting a stopper rod is further provided near the burner hole 34 of the first cover plate 31 and the second cover plate 32.

[0081] As an example, such as Figures 1 - 3 shown, the tundish roaster 1 further includes a counterweight box 14, and the counterweight box 14 is connected to the second end of the boom structure 12 (such as Figures 1 - 3 shown, the left end).

[0082] As an example, such as Figure 2 and Figure 3 shown, the tundish roaster 1 further includes a driving device 16. The driving device 16 is connected to the boom structure 12 and is used to drive the boom structure 12 to drive the first burner 171 and the movable cover plate 15 to move up and down; as an example, the driving device 16 includes but is not limited to an electro-hydraulic push rod and a hoist.

[0083] As an example, such as Figures 1 - 3 shown, the tundish roaster 1 further includes a main boom 18. One end (fixed end) of the main boom 18 is fixedly connected to the boom structure 12, and the other end of the main boom 18 is a free end; Figure 8 is a three-dimensional structure schematic diagram of the main boom 18. A burner connection seat 181 for installing and fixing the first burner 171 and a cover plate connection seat 182 for installing and fixing the movable cover plate 15 are provided at the free end of the main boom 18.

[0084] As an example, the tundish bumer 1 further includes a fire baffle 19, and the fire baffle 19 is fixedly connected to the boom 18. Specifically, as Figure 8 shown, a fire baffle connecting plate 183 is provided in the middle of the boom body 186 at the free end and the fixed end of the boom 18. A number of fixing holes are provided on the fire baffle connecting plate 183 of the fire baffle 19, and the fire baffle 19 is fixedly connected to the fire baffle connecting plate 183 by bolts and nuts. It should be noted that the fire baffle 19 can also be fixed to the boom 18 by other means, not limited to the examples listed here.

[0085] In order to enable the boom 18 and the lifting arm structure 12 to achieve a better and more stable connection, as Figure 4 shown, welding parts 185 are provided on both sides of the fixed end of the boom 18, and a bracket connecting part 184 is provided on the boom body 186 of the boom 18; the boom 18 is welded to the lifting arm structure 12. The welding part 185 includes a "worker" part and convex feet at the bottom ends of the two end faces of the "worker" part. The setting of the "worker" part and the convex feet can increase the contact area between the boom 18 and the lifting arm structure 12, so that the boom 18 and the lifting arm structure 12 can be welded together more stably; the bracket connecting part 184 extends from the boom body 186 towards the fixed end of the boom 18 and forms an angle with the boom body 186. One end of the bracket connecting part 184 is connected to the boom body 186, for example, by welding, and the other end is connected to the pipeline support 131 of the pipeline assembly 13, for example, by welding. The pipeline support 131 is fixedly installed on the lifting arm structure 12.

[0086] Figures 9 - 15 It is a schematic structural diagram of the movable cover plate 15 of the present invention. Among them, Figure 9 It is a schematic top view structure diagram of the refractory material 153 installed on the periphery of the movable cover plate 15 of the tundish bumer 1 of the present invention. Figure 10 It is Figure 9 a schematic cross-sectional structure diagram along the A-A direction in Figure 11 It is Figure 9 an enlarged schematic diagram of the area corresponding to the dotted circle in Figure 12 It is a schematic three-dimensional structure diagram when the refractory material 153 is installed in the movable ladle cover of the present invention. Figure 13 It is a schematic bottom view structure diagram when the refractory material 153 is installed in the movable ladle cover of the present invention. Figure 14 It is Figure 13 a schematic cross-sectional structure diagram along the B-B direction in Figure 15 It is Figure 14 an enlarged schematic diagram of the area corresponding to the dotted circle in

[0087] As Figure 9and Figure 11 As shown in FIG. Figure 11 , at least one side of one end of the movable cover plate 15 close to the support frame 11 is provided with a collision prevention member 154 for preventing the movable cover plate 15 from colliding with other cover plates (such as the first cover plate 31 and the second cover plate 32 shown in FIGS. Figure 1 and 2 ) of the tundish 2 adjacent thereto when the movable cover plate 15 moves downward. The number of the collision prevention members 154 depends on the number of other cover plates of the tundish 2 adjacent to the movable cover plate. As an example, as shown in FIG. Figure 11 , the collision prevention member 154 includes a flap which is connected to at least one side of one end of the cover plate close to the support frame 11 in a hinged manner. When the movable cover plate 15 rises or falls together with the burner of the tundish baking furnace 1, the flap automatically adjusts to keep perpendicular to the ground, which can ensure that the side wall on the same side of the flap and other cover plates (such as the first cover plate 31 and the second cover plate 32 shown in FIGS. Figure 1 and 2 ) adjacent to the movable cover plate 15 is in a parallel position during the descending process, thereby avoiding collision.

[0088] As an example, as shown in FIGS. Figure 9 and Figure 10 , the movable cover plate 15 is further provided with a lifting lug 151 and a connection part 152 with the boom. The movable cover plate 15 is connected to the cover plate connection seat 182 of the boom 18 through the connection part 152 with the boom, for example, it can be fastened by bolts and nuts, and of course, it can also be fixed by other means such as welding, which is not limited thereto.

[0089] As shown in FIG. Figures 12 - 15 , the movable cover plate 15 includes a baking cover and refractory material 153. The refractory material 153 fills the inner gap of the baking cover and covers the periphery of the baking cover. As an example, in this embodiment, as shown in FIGS. Figure 12 and Figure 13 , the baking cover includes a baking cover panel 158, a peripheral plate 157, and a baking cover reinforcing ring 156. The shapes of the peripheral plate 157 and the baking cover reinforcing ring 156 include rectangles. In other embodiments, the shapes of the peripheral plate 157 and the baking cover reinforcing ring 156 can also be other annular structures such as squares, ellipses, circles or polygons. The baking cover reinforcing ring 156 is located on the periphery of the peripheral plate 157. In order to better maintain the temperature of the molten steel in the tundish 2, the refractory material 153 is filled in the gap formed by the peripheral plate 157, the baking cover reinforcing ring 156 and the baking cover panel 158, in the space surrounded by the peripheral plate 157, the baking cover panel 158 and the outer wall of the burner hole 34 on the movable cover plate 15, and in the annular area close to the inner wall in the burner hole 34 of the movable cover plate 15. ​​​​​​​​​​​​​​​​​​​​

[0090] As shown Figure 15 in the figure, the refractory 153 is fixed on the inner wall of the burner hole 34 on the movable cover plate 15 by fasteners 155. The fasteners 155 may include, for example, bolts and nuts. The refractory 153 is fixed on the inner wall of the burner hole 34 on the movable cover plate 15 through the central hole 1531 and the fixing plate 1532 reserved in the refractory 153.

[0091] As shown Figure 16 in the figure, the refractory 153 is fixed on the baking cover panel 158 by fasteners 155. The fasteners 155 may include, for example, bolts and nuts. The refractory 153 is fixed on the baking cover panel 158 of the movable cover plate 15 through the central hole 1531 and the fixing plate 1532 reserved in the refractory 153.

[0092] It should be noted that the refractory 153 in the present invention may include ceramic fiber blankets, ceramic fiber folding modules, mineral wool, and other suitable refractory materials. For example, it may be a zirconium-containing ceramic fiber cotton with high temperature resistance, which can be flexibly selected according to different filling positions and requirements to ensure that there are no gaps in the baking cover. Taking the ceramic fiber folding module as an example, the central hole 1531 in the ceramic fiber module is generally formed after inserting a plastic pipe. After fixing the ceramic fiber blanket on the target plate, the plastic pipe is pulled out, and the ceramic fiber around the central hole 1531 area automatically closes the central hole 1531.

[0093] In summary, the tundish roaster of the present invention includes a support frame; a boom structure movably connected to the top of the support frame via a rotating shaft; a first burner fixedly installed at the first end of the boom structure; a pipeline assembly fixedly installed on the boom structure, one end of the pipeline assembly communicating with the first burner, and the other end of the pipeline assembly communicating with a gas source; and a movable cover plate fixedly installed at the first end of the boom structure, the movable cover plate located on one side of the first burner, and a burner hole matching the first burner is provided on the movable cover plate. By using the present invention, by connecting one of the cover plates in the tundish cover to the tundish roaster as a movable cover plate, when baking the tundish, the movable cover plate moves downward with the boom structure to cover the tundish, and the movable cover plate and other cover plates of the tundish together form the tundish cover to cover the tundish. After baking, the movable cover plate is turned over together with the boom structure. This design does not require manually covering the fireproof cotton on the molten steel receiving hole of the existing cover every time when baking the tundish, and the fireproof cotton needs to be removed after baking, which not only saves time, manpower and material resources, but also can better achieve capping and improve the baking temperature. The baking temperature can be increased by 100 °C, greatly saving gas consumption and reducing production costs; in addition, when receiving molten steel, only the tundish roaster needs to be lifted, and then molten steel is injected into the tundish through the opening occupied by the movable cover plate in the tundish cover, without specially setting a molten steel receiving hole on the cover.

[0094] The above embodiments are only illustrative of the principles and effects of the present invention, and are not used to limit the present invention. Any person familiar with this technology can modify or change the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the technical field without departing from the spirit and technical idea disclosed by the present invention should still be covered by the claims of the present invention.

Claims

1. A tundish roaster, characterized in that, Comprising: Support frame; Lifting arm structure, movably connected to the top of the support frame via a rotating shaft; First burner, fixedly installed at the first end of the lifting arm structure; Pipeline assembly, fixedly installed on the lifting arm structure, one end of the pipeline assembly is communicated with the first burner, and the other end of the pipeline assembly is communicated with a gas source; Movable cover plate, fixedly installed at the first end of the lifting arm structure, the movable cover plate is located on one side of the first burner, and a burner hole matching the first burner is provided on the movable cover plate; Driving device, connected to the lifting arm structure, for driving the lifting arm structure to drive the first burner and the movable cover plate to move up and down; The movable cover plate is a part of the tundish cover. When baking the tundish, the movable cover plate moves downward with the lifting arm structure and covers the tundish. The movable cover plate and other cover plates of the tundish together form the tundish cover to cover the tundish. After baking, the movable cover plate is turned over together with the lifting arm structure; at least one side of the end of the movable cover plate close to the support frame is provided with an anti-collision member for preventing the movable cover plate from colliding with other cover plates of the adjacent tundish when moving downward; The anti-collision member includes a flap, and the flap is connected to at least one side of the end of the movable cover plate close to the support frame by a hinged manner; The movable cover plate includes a baking cover and refractory material. At least part of the internal space of the baking cover is filled with the refractory material, and the periphery of the baking cover is covered with the refractory material. The baking cover includes a baking cover panel and a peripheral plate and a baking cover reinforcing ring provided on the baking cover panel. The shapes of the peripheral plate and the baking cover reinforcing ring include a ring shape, and the baking cover reinforcing ring is located outside the peripheral plate; The tundish baking device further includes a boom, one end of the boom is fixedly connected to the lifting arm structure, and the other end of the boom is a free end; the free end of the boom includes a burner connection seat for fixedly installing the first burner and a cover plate connection seat for fixedly installing the movable cover plate.

2. The tundish roaster according to claim 1, characterized in that, The tundish baking device further includes a counterweight box, and the counterweight box is connected to the second end of the lifting arm structure.

3. The tundish roaster according to claim 1, characterized in that, The driving device includes an electro-hydraulic push rod and a hoist.

4. The tundish roaster according to claim 1, characterized in that, The tundish baking device further includes a fire baffle, and the fire baffle is fixedly connected to the boom.

5. The tundish baster according to claim 1, characterized in that, The boom is fixedly connected to the lifting arm structure by welding.

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