KR101221996B1 - Apparatus for scattering heat insulator and method for scattering heat insulator using it - Google Patents

Apparatus for scattering heat insulator and method for scattering heat insulator using it Download PDF

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KR101221996B1
KR101221996B1 KR1020100092251A KR20100092251A KR101221996B1 KR 101221996 B1 KR101221996 B1 KR 101221996B1 KR 1020100092251 A KR1020100092251 A KR 1020100092251A KR 20100092251 A KR20100092251 A KR 20100092251A KR 101221996 B1 KR101221996 B1 KR 101221996B1
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South Korea
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molten steel
hopper
thermal insulation
insulating material
insulation material
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KR1020100092251A
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Korean (ko)
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KR20120030634A (en
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이경
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주식회사 포스코
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Publication of KR20120030634A publication Critical patent/KR20120030634A/en
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  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)

Abstract

The present invention relates to a thermal insulation material spraying device and a thermal insulation material spraying method using the same. In particular, the present invention relates to a thermal insulation material spraying device capable of evenly spraying the thermal insulation material injected into the ladle to the molten steel to prevent the insulation and oxidation of molten steel and a thermal insulation material spraying method using the same.
Insulating material spraying apparatus according to an embodiment of the present invention is a device for injecting the insulating material on the upper surface of the molten steel, a storage hopper containing the insulating material, an input hopper for receiving the thermal insulation material falling from the storage hopper, and the input hopper And an elevating means for elevating the feed hopper on the upper side of the molten steel and a net provided on the inner bottom surface of the combustible sheet.
In addition, the insulating material spraying method according to an embodiment of the present invention is a method of injecting the insulating material on the upper surface of the molten steel, the step of placing the insulating material in a storage hopper, and placing a flammable sheet in the mesh provided inside the input hopper And dropping the insulating material contained in the storage hopper onto the combustible sheet placed in the input hopper, and the combustible sheet is burned by radiant heat of the molten steel so that the insulating material is applied to the upper surface of the molten steel through the mesh. And lowering the input hopper to the molten steel side to fall.

Description

Insulating material spraying device and method of spraying insulating material using the same {Apparatus for scattering heat insulator and method for scattering heat insulator using it}

The present invention relates to a thermal insulation material spraying device and a thermal insulation material spraying method using the same. In particular, the present invention relates to a thermal insulation material spraying device capable of evenly spraying the thermal insulation material injected into the ladle to the molten steel to prevent the insulation and oxidation of molten steel and a thermal insulation material spraying method using the same.

In general, the molten steel refined in the steelmaking process is contained in the ladle is insulated to prevent the temperature decrease and oxidation of the molten steel before the transfer to the continuous casting process. Carbonaceous chaff and basic flux may be used as the heat insulating material, and the molten steel is melted in the ladle and the upper portion of the molten steel is blocked to prevent contact with air to prevent oxidation of the molten steel and compensate for temperature loss.

In the related art, as shown in FIG. 1, a heat insulating material input device 20 including a hopper 22 storing a heat insulating material 1 and a chute 24 connected to a lower portion of the hopper 22 is used. Into the ladle (ladle; 10) was put in the manner of dropping the heat insulating material (1) on top of the molten steel (2).

By the way, according to the conventional thermal insulation material input device 20, the thermal insulation material 1 is not evenly sprayed on the upper portion of the molten steel (2) in the process of adding the thermal insulation material (1) to a portion (P 1 ) of the upper surface of the molten steel (2) It was put in a biased state. Thus, a heat insulation material (1) was carried out in the temperature lowering of the molten steel and the oxide (2) sudden top surface (P 2) of the molten steel (2) which is not covered properly. As such, the quality of the molten steel 2 is deteriorated due to the undistributed or uneven distribution of the heat insulating material 1 on the upper surface of the molten steel 2, and the slag exclusion process in the ladle 10 due to the sintering of the slag. This makes it difficult to keep the ladle 10 clean.

Also, conventionally, the chute 24 is positioned high above the molten steel 2 in order to prevent thermal damage of the thermal insulation material input device 20 exposed to a high temperature environment, and in this state, the thermal insulation material 1 is the ladle 10. ) Was put into. Therefore, when the insulating material 1 is input, the insulating material 1 is scattered in the upper space of the ladle 10 to generate dust, which contaminates the installation space of the ladle 10, due to the loss of the insulating material (1) There was a problem that the process efficiency is lowered, such as an increase in the cost of the insulation material input process.

The present invention provides a thermal insulation material spraying device and a thermal insulation material spraying method using the same.

The present invention provides a thermal insulation material spreading device and a thermal insulation material spreading method using the same that can be evenly sprayed on the upper surface of the molten steel insulated in the ladle to prevent the insulation and oxidation of the molten steel.

The present invention provides a thermal insulation material spreading apparatus and a thermal insulation material spreading method using the same, which can be evenly sprayed in the state in which the thermal insulation material injected into the ladle to close the upper surface of the molten steel to prevent thermal insulation and oxidation of the molten steel.

Insulating material spraying apparatus according to an embodiment of the present invention is a device for injecting the insulating material on the upper surface of the molten steel, a storage hopper containing the insulating material, an input hopper for receiving the thermal insulation material falling from the storage hopper, and the input hopper And an elevating means for elevating the feed hopper on the upper side of the molten steel and a net provided on the inner bottom surface of the combustible sheet.

In addition, the insulating material spraying method according to an embodiment of the present invention is a method of injecting the insulating material on the upper surface of the molten steel, the step of placing the insulating material in a storage hopper, and placing a flammable sheet in the mesh provided inside the input hopper And dropping the insulating material contained in the storage hopper onto the combustible sheet placed in the input hopper, and the combustible sheet is burned by radiant heat of the molten steel so that the insulating material is applied to the upper surface of the molten steel through the mesh. And lowering the input hopper to the molten steel side to fall.

According to the thermal insulation material spraying apparatus and the thermal insulation material spraying method using the same according to the embodiments of the present invention, the thermal insulation material is evenly stored on the combustible sheet facing the upper surface of the molten steel and having the same shape and area as the upper surface of the molten steel. By allowing the combustible sheet to be burned by the radiant heat of the molten steel, it is possible to evenly drop the insulating material on the entire portion of the upper surface of the molten steel. That is, it is possible to prevent the molten steel from rapidly lowering temperature or oxidizing by spreading the insulating material evenly on the upper surface of the molten steel. Therefore, the quality of the molten steel can be prevented from being lowered, and the slag can be easily removed due to the sintering of the slag, thereby keeping the ladle clean.

In addition, in order to burn the combustible sheet by the radiant heat of molten steel, the input hopper is elevated to the molten steel so that the distance between the input hopper and the molten steel during combustion of the combustible sheet, i.e., spraying the insulating material is short, thereby minimizing scattering of the insulating material. can do. Therefore, the installation space of the ladle can be prevented from being contaminated, and the cost of the thermal insulation material input process can be reduced by minimizing the loss of the thermal insulation material. That is, the efficiency of a heat insulation material input process can be improved.

1 is a view schematically showing a conventional thermal insulation material input device.
Figure 2 is a perspective view of the thermal insulation material spraying device according to an embodiment of the present invention.
3 is a cross-sectional configuration of the thermal insulation material spraying device shown in FIG.
Figure 4 schematically shows a further configuration of the thermal insulation material spraying device according to the present invention.
5 and 6 is a driving state diagram of the thermal insulation material spraying apparatus according to the present invention.
Figure 7 is a flow chart illustrating a thermal insulation spraying method according to an embodiment of the present invention.
8 is an expanded flowchart of the thermal insulation spraying method shown in FIG.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. It should be understood, however, that the invention is not limited to the disclosed embodiments, but may be embodied in many different forms and should not be construed as being limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, To provide a complete description of the category. Wherein like reference numerals refer to like elements throughout.

Figure 2 is a perspective view of the thermal insulation material spraying apparatus according to an embodiment of the present invention, Figure 3 is a cross-sectional configuration of the thermal insulation material spraying device shown in Figure 2, Figure 4 schematically shows a further configuration of the thermal insulation material spraying apparatus according to the present invention 5 and 6 are driving state diagrams of the thermal insulation material spraying device according to the present invention.

2 to 6, the thermal insulation material spraying apparatus 100 according to an embodiment of the present invention is a device for injecting the thermal insulation material 1 on the upper surface of the molten steel 2, the storage hopper containing the thermal insulation material (1) And a mesh 310 is provided on the inner bottom surface to accommodate the thermal insulation material 1 falling from the storage hopper 200 and the mesh 310 of the charging hopper 300. The paper includes a lift means 500 for lifting the input hopper 300 above the combustible sheet 400 and the molten steel 2. In addition, the storage hopper 200, the input hopper 300 and the frame means 600 for supporting the lifting means 500 may be further included.

The heat insulating material 1 is an auxiliary material for preventing the molten steel 2 in the ladle 10 from being exposed to air and causing a rapid decrease in temperature or oxidation, thereby covering the upper surface of the molten steel 2 so that the molten steel 2 is in contact with the air. Block it. As the thermal insulation material 1, carbonized rice husk in a granular state or powder state with a small particle size, a high basic flux, or the like may be utilized.

The storage hopper 200 is a container for storing the thermal insulation material 1 supplied from the outside before the upper surface of the molten steel 2 contained in the ladle 10, and the storage space S 1 is contained therein. The amount of falling of the heat insulating material (1) contained in the storage hopper body 210 and coupled to the open lower portion of the storage hopper body 210 and the storage hopper body 210 to form the inside, that is, the heat insulating material to the molten steel (2) And opening and closing means 220 for adjusting the input amount of (1). The storage hopper body 210 has an open top and bottom, and a hollow portion that is a storage space S 1 is formed inside. In addition, the storage hopper body 210 is formed in a truncated cone shape in which the inner diameter (r 1 , r 2 ; r 1 > r 2 ) of the storage space (S 1 ) becomes smaller as it goes downward, so that it is easy to fall due to its own weight. Is done. That is, even if a separate means is not provided, the insulating material 1 contained in the storage space S 1 can be easily discharged downward. On the other hand, an open upper portion of the storage hopper body 210 may be provided with a storage hopper cover (not shown) for preventing the thermal insulation material 1 contained in the storage space (S 1 ) to be scattered to the outside, the storage hopper cover One side of may be provided with a cover opening and closing means (not shown) for opening and closing the storage hopper cover. The opening and closing means 220 coupled to the lower portion of the storage hopper body 210 is connected to one side of the door 222 that opens and closes at an open lower portion of the storage hopper body 210 and the door 222 to open the door 222. And a door driving means 224 for sliding driving. The opening and closing means 220 may be directly installed at the lower portion of the storage hopper body 210, and may be installed at the lower portion of the chute 24 after coupling the chute 24 (see FIG. 1) to the lower portion of the storage hopper body 210. have. By controlling the open state of the door 222 and the opening time of the door 222 through the door driving means 224, it is possible to easily adjust the input amount of the heat insulating material 1 covering the upper surface of the molten steel 2. In the present embodiment, the sliding door 222 is used as the opening and closing means 220, but of course, the door 222 of various driving methods, such as the rotation method can be used.

The input hopper 300 is a container for temporarily storing the thermal insulation material 1 falling from the storage hopper 200 and is provided below the storage hopper 200 to accommodate the thermal insulation material 1 that falls. The storage hopper 200 may include a side wall body 320 forming a side wall of the storage space S 2 in which the heat insulating material 1 is temporarily stored, and a net forming a bottom surface of the storage space S 2 , that is, a bottom surface thereof. 310). The input hopper 300 has a shape corresponding to the shape of the upper surface of the molten steel 2 exposed to the air. In this embodiment, the side wall body 320 is cylindrical because the upper surface of the molten steel 2 is formed in a circular shape. The mesh 310 formed in the shape and supported by the side wall body 320 has a circular cross section.

The mesh 310 has a structure in which a plurality of meshes through which the heat insulating material 1 can pass are formed densely, and a flammable sheet 400 to be described later is placed in the mesh 310. In the state in which the combustible sheet 400 is placed in the mesh 310, a plurality of meshes formed in the mesh 310 are blocked by the combustible sheet 400, and the thermal insulation material 1 dropped from the storage hopper 200 is injected into the hopper 300. Can be stored inside. The input hopper 300, in particular, the mesh 310, which is driven up and down to be close to the high temperature molten steel 2 by the elevating means 500, in particular, the mesh 310 so that thermal deformation does not occur due to radiant heat from the molten steel 2. It is formed of a metal material having excellent heat resistance and durability.

The flammable sheet 400 blocks the insulating material 1 from falling from the bottom surface of the input hopper 300, that is, the mesh 310, until the insulating material 1 is injected into the upper surface of the molten steel 2. In addition, when the input hopper 300 is lowered toward the molten steel 2 by the elevating means 500, the heat insulating material 1 exits the mesh 310 and falls by receiving radiant heat from the molten steel 2 and burning it away. do. The combustible sheet 400 is formed of a material having a flammability that can be burned by the radiant heat of the molten steel (2) while having durability so that tearing does not occur due to the load of the heat insulating material (1) accommodated in the input hopper (300). do. In this embodiment, the flammable sheet 400 is formed of a flammable paper material or a flammable vinyl material. (In this case, when the storage amount of the heat insulating material 1 in the input hopper 300 increases, the thickness of the flammable sheet 400 can be increased to increase durability.) The flammable sheet 400 is applied to the radiant heat of the molten steel 2. When burned by, the heat insulating material 1 accommodated on the combustible sheet 400 falls toward the molten steel 2. At this time, the combustible sheet 400 is formed to have the same shape and the same area as the upper surface of the molten steel 2 so that the insulating material 1 can be evenly dropped on the entire upper surface of the molten steel (2). Thus, by forming the combustible sheet 400 to correspond to the shape and size of the upper surface of the molten steel (2) it can be spread evenly without biasing the heat insulating material (1) to a portion of the upper surface of the molten steel (2). Therefore, it is possible to prevent the heat insulating material 1 from being undistributed or unevenly distributed on the upper surface of the molten steel 2 to prevent the molten steel 2 from being lowered or oxidized.

The frame means 600 supports the storage hopper 200 and the input hopper 300 on the upper side of the ladle 10. To this end, the frame means 600 is spaced apart from the support ring 610 for supporting the outer circumferential surface of the storage hopper 200, the lower side of the support ring 610, the lifting drive (M) of the input hopper 300 A guide frame 620 extending up and down to guide, and a pair of stoppers provided at the upper and lower ends of the guide frame 620 to prevent the input hopper 300 from escaping out of the guide frame 620 ( 630; 630a, 630b). (Here, the upper stopper 630a and the lower stopper 630b are located at the upper side of the pair of stoppers 630.) The storage hopper 200 is placed in the upper space of the ladle 10. The support ring 610 which supports the storage hopper 200 to be positioned is supported by a vertical frame (not shown) which stands vertically from the bottom of the installation plant in which the ladle 10 is located or the side wall or ceiling of the installation plant. It may be supported by a horizontal frame (not shown) protruding from the. Like the storage hopper 200, a pair of stoppers 630 vertically supporting the guide frame 620 is also supported by a vertical frame (not shown) which stands vertically from the floor in the installation factory where the ladle 10 is located. It may be supported or supported by a horizontal frame (not shown) or the like protruding from the side wall or ceiling of the installation plant. The pair of stoppers 630 are formed in a ring shape, and the thermal insulation material 1 stored in the storage hopper 200 falls to the input hopper 300 through the upper stopper 630a, and to the input hopper 300. The stored insulation 1 falls into the molten steel 2 through the lower stopper 630b. The guide frame 620 that connects the upper stopper 630a and the lower stopper 630b to be spaced up and down is formed of a plurality of vertical frames 620a to 620d, and formed inside of the plurality of vertical frames 620a to 620d. The input hopper 300 supports the lifting drive M in the space. Although not shown, a plurality of vertical frames 620a to 620d and male and female grooves may be formed on the side surfaces of the input hopper 300 to minimize shaking during the lifting driving M of the input hopper 300. In the present embodiment, four vertical frames 620a to 620d are used, but when the lifting drive M of the feeding hopper 300 can be stably guided, the number of uses can be freely changed to three or less or five or more. Can be.

The lifting means 500 is connected to the upper stopper 630a of the frame means 600. Lifting means 500 is provided on one side of the roller 510 is installed on the upper surface of the upper stopper (630a), the upper stopper (630a) for generating a driving force for the lifting drive (M) of the input hopper 300 It includes a wire 530, one end of which is connected to the elevating drive source 520 via the elevating drive source 520 and the roller 510, and the other end thereof is connected to the input hopper 300. In this embodiment, a pair of rollers 510 are spaced apart on the upper stopper 630a for stable lift driving M of the input hopper 300.

On one side of the above-described frame means 600 is a sealing means 700 is placed on the mesh 310 as shown in Figure 4 (a) to push the heat insulating material 1 accommodated on the combustible sheet 400 flat It may be provided. The sealer 700 includes a sealer 710 for pushing the heat insulating material 1 flatly and a sealer driving means (not shown) for vertically and horizontally driving the sealer 710, and using the sealer 700 By lowering the heat insulating material 1 before lowering the input hopper 300 toward the molten steel 2, the heat insulating material 1 can be spread more evenly on the upper surface of the molten steel 2. As a variant, when the sealing means 700 is not provided, the means for relatively moving the storage hopper 200 and the input hopper 300, that is, the storage hopper 200 is horizontally moved above the input hopper 300. Alternatively, the frame means 600 may be provided with a hopper moving means (not shown) for horizontally moving the input hopper 300 at the lower side of the storage hopper 200. For example, when the heat insulating material 1 is dropped from the storage hopper 200, the heat insulating material 1 may be flatly accommodated on the combustible sheet 400 by horizontally moving and shaking the storage hopper 200.

Meanwhile, as shown in FIG. 4 (b), a plurality of flammable sheets 400 are stored on an outer side of the frame means 600, and the stored flammable sheets 400 are supplied to the hopper 300 automatically one by one. Cassette means 800 may be provided. Although not shown, a ring-shaped mold may be provided to easily store the flammable sheet 400 in the cassette means 800 and to facilitate the supply to the feed hopper 300. The edge of the flammable sheet 400 is coupled to the ring-shaped mold so that the flammable sheet 400 can be easily maintained in a taut state. In addition, one side of the cassette means 800 may be provided with a combustible sheet conveying means capable of transferring the combustible sheet 400 stored as a robot arm to the input hopper 300 one by one.

Hereinafter, the thermal insulation material spraying method according to an embodiment of the present invention using the thermal insulation material spraying device 100 described above will be described.

5 and 6 is a driving state diagram of the thermal insulation material spraying apparatus according to the present invention, Figure 7 is a flow chart illustrating a thermal insulation material spraying method according to an embodiment of the present invention, Figure 8 is a thermal insulation material spraying method shown in Figure 7 An extended flowchart.

5 to 8, the thermal insulation material spraying method according to an embodiment of the present invention is a method of injecting the thermal insulation material 1 to the upper surface of the molten steel (2), the thermal insulation material 1 to the storage hopper 200 Filling step (S110), the step of placing the flammable sheet 400 in the mesh 310 provided inside the input hopper (300) (S120), and the thermal insulation material (1) contained in the storage hopper (200) Dropping on the combustible sheet 400 placed on the 300 (S130), and the combustible sheet 400 is burned by the radiant heat of the molten steel 2 so that the heat insulating material (1) through the mesh 310 to the molten steel (2) It includes a step (S140) to lower the input hopper 300 to the molten steel (2) side to fall on the upper surface of the.

The heat insulating material 1 is once stored in the storage hopper 200 for input into the molten steel 2 as shown in FIG. At this time, the heat insulating material 1 may be stored in the upper surface of the molten steel 1 by an amount to be input once, and the amount to be input in multiple times may be temporarily stored according to the storage capacity of the storage hopper 200 (S110). ). When the storage of the thermal insulation material 1 is completed in the storage container 200, as shown in FIG. 5 (b), the combustible sheet (3) may be disposed in the mesh 310 of the input hopper 300 positioned in proximity to the storage container 200. The container 400 is placed to form a storage space S 2 of the heat insulating material 1 (S120).

Thereafter, as shown in FIG. 5C, the thermal insulation material 1 stored in the storage hopper 200 is dropped and stored in the storage space S 2 of the input hopper 300 (S130). In order to accommodate the heat insulating material 1 evenly on the combustible sheet 400, after the drop of the heat insulating material 1 is completed from the storage hopper 200, the heat insulating material 1 that has fallen on the flammable sheet 400 is pushed flat. The giving may further include step S135.

When the storage of the thermal insulation material 1 is completed in the input hopper 300 as described above, as shown in FIG. 6 (d), the input hopper 300 is driven up and down (M), that is, the molten steel 2 to perform the input hopper ( 300 is lowered (S140). That is, as the input hopper 300 is lowered to approach the hot molten steel 2, the heat insulating material 1 is pulled out through the mesh 310 by causing the combustible sheet 400 to be burned by the radiant heat from the molten steel 2. It falls out and falls to the upper surface of the molten steel 2 (refer FIG. 6 (e)). At this time, the combustible sheet 400 is formed to have the same shape and the same area as the upper surface of the molten steel 2 so that the heat insulating material 1 falls evenly on the upper front surface of the molten steel 2 when the combustible sheet 400 burns. . Therefore, it is possible to evenly spray the insulating material 1 on the upper surface of the molten steel (2) to prevent the temperature drop or oxidation by the air exposure of the molten steel (2). In addition, the input hopper 300 is positioned to be close to the molten steel 2 to the position where the combustible sheet 400 is burned by the radiant heat of the molten steel 2 so that the heat insulating material 1 is transferred from the input hopper 300 to the molten steel 2. When falling, the generation of dust is reduced.

On the other hand, when the input of the thermal insulation material (1) to the molten steel (2) in the input hopper 300 is completed, the step (S150) and molten steel (2) to the original position so as to approach the lower side of the storage hopper 200 Re-injecting the insulating material (1) on the upper surface of the) or may be subjected to the step (S160) to determine whether to put the insulating material (1) in the molten steel stored in another ladle. (In this case, the term “daddle ladle” means a ladle repositioned at the lower side of the input hopper 300 by the ladle turret.) When the input of the thermal insulation material 1 proceeds again, the storage hopper 200 Step (S110) or the input hopper (S110) or storing the insulating material (1) in the storage hopper 200 by determining whether the insulating material (1) is stored in the storage hopper 200, even if the insulating material (1) is stored in the amount to be put In operation S120, the combustible sheet 400 may be placed on the mesh 310 of the 300. Subsequent iterations are the same as the contents of steps S130 to S165 described above.

According to the thermal insulation material spraying apparatus and the thermal insulation material spraying method using the same according to the embodiments of the present invention as described above, the thermal insulation material evenly on the combustible sheet facing the upper surface of the molten steel, having the same shape and area as the upper surface of the molten steel By keeping the flammable sheet burned by the radiant heat of the molten steel in the stored state, it is possible to evenly drop the insulating material on the entire portion of the upper surface of the molten steel. That is, it is possible to prevent the molten steel from rapidly lowering temperature or oxidizing by spraying the insulating material evenly without biasing the upper surface of the molten steel. Therefore, the quality of the molten steel can be prevented from being lowered, and the slag can be easily removed due to the sintering of the slag, thereby keeping the ladle clean. In addition, in order to burn the combustible sheet by the radiant heat of molten steel, the input hopper is elevated to the molten steel so that the distance between the input hopper and the molten steel during combustion of the combustible sheet, i.e., spraying the insulating material is short, thereby minimizing scattering of the insulating material. can do. Therefore, the installation space of the ladle can be prevented from being contaminated, and the cost of the thermal insulation material input process can be reduced by minimizing the loss of the thermal insulation material. That is, the efficiency of a heat insulation material input process can be improved.

In the thermal insulation material spraying apparatus and the thermal insulation material spraying method using the same according to embodiments of the present invention (including one embodiment and modification), the ladle is described as an example of a container containing molten steel, but the present invention is not limited thereto. Insulating material spraying device and the method of spraying the thermal insulation material using the same for the input of the thermal insulation material to the various containers containing molten steel.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. Therefore, it will be apparent to those skilled in the art that the present invention may be variously modified and modified without departing from the spirit of the appended claims.

1: insulation material 2: molten steel
10: ladle 100: insulation material spraying device
200: storage hopper 210: storage hopper body
220: opening and closing means 300: input hopper
310: mesh 400: flammable sheet
500: lifting means 600: frame means
610: support ring 620: guide frame
630: stopper 700: sealing means
800: cassette means

Claims (11)

A device for injecting the insulation to the upper surface of the molten steel,
A storage hopper containing the insulation;
An input hopper for receiving the thermal insulation material falling from the storage hopper;
A mesh provided on the inner bottom surface of the feeding hopper;
A combustible sheet placed on the mesh; And
Elevating means for elevating the feed hopper above the molten steel;
Thermal insulation spraying device comprising a. The method according to claim 1,
And a frame means for supporting said storage hopper, said input hopper and said elevating means. The method according to claim 2,
On one side of the frame means,
Insulating material spreading apparatus is provided with a sealing means for flattening the insulating material placed on the mesh and stored on the combustible sheet. The method according to claim 2,
On the outer side of the frame means,
And a cassette means for storing a plurality of the combustible sheets and automatically feeding them to the feeding hopper. The method according to any one of claims 1 to 4,
The flammable sheet,
Insulating material spreading device is formed to have the same shape and the same area as the upper surface of the molten steel. The method according to claim 5,
The flammable sheet,
Thermal insulation spraying device formed of flammable paper material or flammable vinyl material. The method according to any one of claims 1 to 4,
The storage hopper,
A storage hopper body configured to form a storage space containing the insulation;
Opening and closing means coupled to an open lower portion of the storage hopper body to adjust an amount of falling of the thermal insulation material contained in the storage hopper body;
Thermal insulation spraying device comprising a. The method according to any one of claims 2 to 4,
The frame means,
A support ring surrounding the outer circumferential surface of the storage hopper;
A guide frame extending upward and downward from the lower side of the support ring to guide the lifting and lowering of the feeding hopper;
A pair of stoppers provided at upper and lower ends of the guide frame to prevent the input hopper from being separated;
Thermal insulation spraying device comprising a. As a method of injecting the insulation to the upper surface of the molten steel,
Placing the insulation in a storage hopper;
Placing a combustible sheet on a mesh provided inside the feeding hopper to form a storage space of the insulation;
Dropping the thermal insulation material contained in the storage hopper into a storage space on the combustible sheet placed on the input hopper;
Lowering the insulator hopper to the molten steel side to cause the combustible sheet to be burned by the radiant heat of the molten steel, thereby dropping the insulation to the upper surface of the molten steel through the mesh;
Thermal insulation spraying method comprising a. The method according to claim 9,
After dropping the insulation to the storage space on the combustible sheet,
Insulating material spraying method comprising the step of flatly pushing the insulation to fall on the combustible sheet. The method according to claim 9 or 10,
In the step of burning the combustible sheet to drop the insulating material,
The flammable sheet is formed so as to have the same shape and the same area as the upper surface of the molten steel so that the thermal insulation material evenly falls on the upper front surface of the molten steel when the combustible sheet is burned.
KR1020100092251A 2010-09-20 2010-09-20 Apparatus for scattering heat insulator and method for scattering heat insulator using it KR101221996B1 (en)

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KR101707315B1 (en) * 2015-06-18 2017-02-15 현대제철 주식회사 Cover apparatus for inserting heat-insulation material
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Publication number Priority date Publication date Assignee Title
JPS61219462A (en) 1985-03-27 1986-09-29 Nippon Kokan Kk <Nkk> Charging method for ladle insulating material
JPS6471550A (en) * 1987-09-09 1989-03-16 Nippon Kokan Kk Apparatus for charging heat holding material
JPH05179337A (en) * 1990-12-28 1993-07-20 Kawasaki Steel Corp Method and device for charging heat insulating material into molten steel ladle
KR20040027077A (en) * 2002-09-27 2004-04-01 주식회사 포스코 Molten steel temperature measuring apparatus of tundish

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61219462A (en) 1985-03-27 1986-09-29 Nippon Kokan Kk <Nkk> Charging method for ladle insulating material
JPS6471550A (en) * 1987-09-09 1989-03-16 Nippon Kokan Kk Apparatus for charging heat holding material
JPH05179337A (en) * 1990-12-28 1993-07-20 Kawasaki Steel Corp Method and device for charging heat insulating material into molten steel ladle
KR20040027077A (en) * 2002-09-27 2004-04-01 주식회사 포스코 Molten steel temperature measuring apparatus of tundish

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