CN215468055U - Steel ladle cover - Google Patents

Steel ladle cover Download PDF

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Publication number
CN215468055U
CN215468055U CN202121869418.8U CN202121869418U CN215468055U CN 215468055 U CN215468055 U CN 215468055U CN 202121869418 U CN202121869418 U CN 202121869418U CN 215468055 U CN215468055 U CN 215468055U
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CN
China
Prior art keywords
cover
ladle
steel
cover plate
ladle cover
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CN202121869418.8U
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Chinese (zh)
Inventor
张学敏
周杰
王炎平
孟凡祥
周刚德
李法欣
王佳
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Shandong Guomao Metallurgical Materials Co ltd
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Shandong Guomao Metallurgical Materials Co ltd
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  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
  • Furnace Housings, Linings, Walls, And Ceilings (AREA)

Abstract

The utility model discloses a steel ladle cover, which comprises a cover body, wherein the cover body comprises a cover plate and a cover wall connected to the cover plate, the cover wall is circumferentially arranged along the cover plate and forms a frame structure of the cover body together with the cover plate, a heat-insulating layer is arranged in the frame structure, the cover wall is hollow, and a light castable is filled in the hollow inner part of the cover wall; according to the utility model, the heat preservation and insulation layer is arranged in the frame structure of the cover body to achieve the effects of heat preservation and insulation, and meanwhile, the light castable is filled in the hollow cover wall to improve the strength of the cover wall structure and slow down the deformation of a steel structure caused by heat transfer, so that the strength of the ladle cover can be further improved on the basis of achieving good heat preservation and insulation effects, the service life of the ladle cover is prolonged, and the overall weight of the ladle cover is reduced.

Description

Steel ladle cover
Technical Field
The utility model relates to the technical field of metallurgical high-temperature materials, in particular to a steel ladle cover.
Background
At present, the situation of national environmental protection management and control is more strict, and the steel industry with high pollution and high emission becomes the key industry of environmental protection management and control. Many regions have established extremely stringent ultra-low emission standards for the steel industry, and failure to meet the standards may face a situation of reduced production or even shut-down. As an important link of energy consumption and emission of the whole steel system, steel-making production is promoted to develop a new environment-friendly energy-saving technology. The whole-process steel ladle capping technology is that a steel ladle cap with a refractory material lining is added to a steel ladle in the whole process, so that the heat dissipation of a ladle opening can be effectively prevented, and a better steel water heat preservation effect in the ladle is obtained. The steel ladle capping technology can well reduce the temperature drop of molten steel in a steel ladle, thereby reducing the energy consumption of the steel industry, effectively controlling the unorganized emission of flue gas and further reducing the pollution emission.
Chinese patent application publication No. CN 110842183 a discloses a ladle cover and a manufacturing method thereof, the cover comprises a cover steel structure and a refractory material arranged inside the cover steel structure, the refractory material comprises a heavy castable and a light castable, and a pouring area of the heavy castable is close to a slag turning side of the cover, thus, the difference of the castable is only adopted in the scheme, and a refractory fiber module is not arranged.
Chinese patent No. CN 203738012U discloses a lining structure of a steel ladle cover, the lining of which adopts a plurality of pouring material precast blocks tiled on the inner surface of the steel ladle cover to completely cover the inner surface of the steel ladle cover, each pouring block precast block is connected and fixed with a steel ladle cover main shell body by a fixing bolt, the scheme enhances the connection stability of the lining structure to a certain extent, however, the bearing structure outside the lining is not introduced, if the rigidity or strength of the bearing structure is not enough, the whole rigidity cannot be ensured, and if the rigidity is enhanced by one taste, the weight of the steel ladle cover itself may be heavier and not beneficial to the development of light weight, resulting in the application unchanged.
Chinese patent No. CN 203843157U discloses a buckle cover for a steel ladle, which includes high-temperature light refractory wool located on one side of the buckle cover for a steel ladle and high-temperature light refractory ramming material located on the other side of the buckle cover for a steel ladle, wherein the refractory main part of the buckle cover for a steel ladle is the high-temperature light refractory wool, and the part easy to be washed by steel slag during deslagging adopts the high-temperature light refractory ramming material, that is, different refractory wool is adopted according to different parts to reduce the load of a travelling crane, but the structure and material of the circumferential wall of the buckle cover are not introduced, so that there is no explicit description on how to ensure the overall rigidity and further reduce the weight.
Therefore, how to develop a steel ladle cover, which can further improve the overall strength and the service life and reduce the overall weight on the basis of heat preservation and heat insulation is a technical problem to be solved urgently.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a ladle cover to solve the problems in the prior art, a heat preservation and insulation layer is arranged in a frame structure of a cover body to achieve the effects of heat preservation and insulation, and meanwhile, a light castable is filled in a hollow cover wall to improve the strength of the cover wall structure and slow down the deformation of a steel structure caused by heat transfer, so that the strength of the ladle cover can be further improved on the basis of achieving good heat preservation and insulation effects, the service life of the ladle cover is prolonged, and the overall weight of the ladle cover is reduced.
In order to achieve the purpose, the utility model provides the following scheme:
the utility model provides a steel ladle cover which comprises a cover body, wherein the cover body comprises a cover plate and a cover wall connected to the cover plate, the cover wall is circumferentially arranged along the cover plate, a frame structure of the cover body is formed by the cover wall and the cover plate, a heat insulation layer is arranged in the frame structure, the cover wall is hollow, and a light castable is filled in the hollow cover wall.
Preferably, the cover wall is a rectangular steel tube.
Preferably, the heat preservation and insulation layer comprises a refractory fiber plate and a block-shaped refractory fiber module which are sequentially arranged from inside to outside, the refractory fiber plate is paved on the inner surface of the cover plate, the block-shaped refractory fiber module is paved in the middle of the frame structure, and the light castable is poured between the block-shaped refractory fiber module and the cover wall.
Preferably, the cover plate is connected with a hinge hook and a hanging shaft, the hinge hook is arranged on one side of the cover plate, the hanging shaft is arranged on the outer surface of the cover plate, and the axial direction of the hanging shaft is parallel to the rotating axial direction of the hinge hook.
Preferably, the hanging shafts are distributed in a shape like a Chinese character 'ji', one side of each hanging shaft close to the hinge hook is provided with one hanging shaft, and the other side of each hanging shaft far away from the hinge hook is provided with two hanging shafts.
Preferably, the lid is circular structure, the side of circular structure is provided with straight type breach.
Preferably, the outer surface of the cover plate is provided with reinforcing ribs, and the reinforcing ribs are staggered with each other to form a plurality of rectangular lattices.
Preferably, the reinforcing rib is a C-shaped steel.
Preferably, a viewing port is arranged on the cover plate in part of the rectangular lattices.
Preferably, a hook is arranged in the middle of the outer surface of the cover plate.
Compared with the prior art, the utility model has the following technical effects:
(1) according to the utility model, the heat-insulating layer is arranged in the frame structure of the cover body to achieve the effect of heat insulation, and meanwhile, the light castable is filled in the hollow cover wall to improve the strength of the cover wall structure and slow down the deformation of a steel structure caused by heat transfer, so that the strength of the ladle cover can be further improved on the basis of achieving good heat-insulating effect, the service life of the ladle cover is prolonged, and the overall weight of the ladle cover is reduced;
(2) the heat preservation and insulation layer comprises a refractory fiber board and a block-shaped refractory fiber module, wherein the refractory fiber board is paved on the breadth of the inner bottom surface of a frame structure, the block-shaped refractory fiber module is paved in the middle of the frame structure, a light castable is poured between the block-shaped refractory fiber module and a cover wall, the refractory fiber board can form a cover plate steel structure, a block-shaped refractory fiber membrane block and a heat insulation layer between the cover plate steel structure and the light castable, the heat preservation and insulation effect is further improved, and the light castable between the block-shaped refractory fiber membrane block and the cover wall can protect the easy-to-damage part of the edge of a steel ladle cover; through the arrangement of the cover plate made of the steel plate, the cover wall made of the square steel pipe, the heat insulation layer consisting of the refractory fiber plate and the block-shaped refractory fiber module, the first castable and the second castable, the steel ladle cover assembly can form a composite steel ladle cover consisting of a plurality of structures and a plurality of materials, and the steel ladle cover has the advantages of good heat insulation effect, light weight design, high structural strength and the like;
(3) the cover body is of a circular structure, the side edge of the circular structure is provided with the straight notch, the straight notch is opposite to the position of the slag discharging port, and as steel slag and cold steel are easy to bond at the slag discharging port, if the steel slag cannot be cleaned in time, the steel ladle cover cannot be smoothly and regularly dropped on the steel ladle in the recycling process, so that the heat preservation effect is influenced, the situation that the steel ladle cover is directly scrapped due to falling and falling can also occur, the situation can be well improved through the arrangement of the straight notch, and the use safety of the steel ladle cover is ensured;
(4) the reinforcing ribs are arranged on the outer surface of the cover plate and are staggered with each other to form a plurality of rectangular lattices, the reinforcing ribs can enhance the strength of the cover plate and ensure the strength of the integral structure of the steel ladle cover, and meanwhile, the reinforcing ribs are made of C-shaped steel, so that the integral weight can be further reduced, the light weight design is realized, and the safe operation of a molten steel transfer operation vehicle is ensured.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic top view of the ladle cover according to the present invention;
FIG. 2 is a schematic cross-sectional view of FIG. 1;
FIG. 3 is an enlarged view of portion I of FIG. 2;
wherein, 1, a cover plate; 11. hinging the hook; 12. reinforcing ribs; 13. hanging a shaft; 14. a viewing port; 15. a hook; 2. a cover wall; 3. a refractory fiber board; 4. a block-shaped refractory fiber module; 5. a second castable; 6. a first castable material.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The utility model aims to provide a steel ladle cover, which aims to solve the problems in the prior art, a heat preservation and insulation layer is arranged in a frame structure of a cover body to achieve the effect of heat preservation and insulation, and meanwhile, a light castable is filled in a hollow cover wall to improve the strength of the cover wall structure and slow down the deformation of a steel structure caused by heat transfer, so that the strength of the steel ladle cover can be further improved on the basis of achieving the good effect of heat preservation and insulation, the service life of the steel ladle cover is prolonged, and the overall weight of the steel ladle cover is reduced.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
As shown in fig. 1 to 3, the present invention provides a ladle cover, which includes a cover body, and structural components such as a hanging shaft 13, a hanging hook 15, and a hinge hook 11 for assisting transportation, movement, or rotation may be installed on the cover body as required. The cover body comprises a cover plate 1 and a cover wall 2 connected to the cover plate 1, wherein the cover plate 1 is of a flat structure and can be directly cut from a steel plate, and the cover plate 1 can be designed to be circular in shape suitable for a steel ladle, and can also be square or other shapes; the cover wall 2 is formed by extending the surface of the cover plate 1 in a direction perpendicular to the surface, and in fact, the cover wall 2 can be connected to the surface of the cover plate 1 or the side edge of the cover plate 1, and the connection is performed by welding or by bolts if necessary. The hoop of apron 1 is followed to the gecko 2 and a week is arranged to the hoop to combine to form the frame construction of lid jointly with apron 1, frame construction is as the main unit that bears of lid, and the appearance size designs according to the demand of ladle, can cover the size of ladle mouth, and, structural certain intensity that possesses can support its inside and outside relevant accessory that sets up. Be provided with the thermal-insulated layer that keeps warm in the frame construction, the thermal-insulated layer that keeps warm plays the thermal-insulated effect that keeps warm, and the thermal-insulated layer that keeps warm can adopt refractory fiber material, avoids scattering and disappearing of steel liquid temperature in the ladle on the basis that can bear the high temperature, can adopt the mode of anchor when the installation, avoids droing. The cover wall 2 is of a hollow structure, the hollow interior of the cover wall is filled with a first pouring material 6, the first pouring material 6 is made of a light pouring material, and the light pouring material is filled in the cover wall 2 to improve the structural strength of the cover wall 2 to a certain extent and avoid bending deformation. The light castable is prepared by taking particles and fine powder of light refractory materials such as ceramsite, alumina hollow spheres or light mullite and the like as main raw materials, aluminate cement as a bonding agent and a plurality of additives as well as the volume density of the light castable is 1.0-1.6g/cm3The refractory castable has the characteristics of light weight, high strength and good heat insulation effect. The utility model can adopt light mullite aggregate as raw material, and the physical and chemical indexes are as follows:
item Conditions for sample treatment Index (I)
Al2O3,% - ≥45
Bulk density, g/cm3 110℃×16h 1.4-1.5
Compressive strength, MPa 110℃×16h ≥15
Flexural strength, MPa 110℃×16h ≥2.0
Change in permanent line after firing% 1500℃×3h ±2.0
The heat-preservation and heat-insulation layer is arranged in the frame structure of the cover body to achieve the heat-preservation and heat-insulation effect, and meanwhile, the light-weight casting material is filled in the hollow cover wall 2 to improve the strength of the cover wall 2 structure and slow down the deformation of a steel structure caused by heat transfer, so that the strength of the ladle cover can be further improved on the basis of achieving the good heat-preservation and heat-insulation effect, the service life of the ladle cover is prolonged, and the overall quality of the ladle cover is reduced.
As shown in fig. 2 to 3, the cover wall 2 may be a rectangular steel pipe, the rectangular steel pipe is made of a common steel material, the cross section of the rectangular steel pipe is rectangular, the interior of the rectangular steel pipe is a hollow structure, the cover plate 1 is bent according to the shape thereof, and the cover plate can be connected after being bent in sections, or the whole rectangular steel pipe can be bent. The rectangular steel pipe is connected for the shape of face with apron 1, and for circular steel pipe is linear with the connection of apron 1, can increase area of contact, guarantees the intensity of connecting. When pouring the light castable into the rectangular steel pipe, firstly, an opening with a section of length is opened on one surface of the rectangular steel pipe, the light castable is poured into the rectangular steel pipe along the opening, and a vibrating rod device can be adopted to vibrate while pouring so as to fill the inner space of the rectangular steel pipe.
The heat insulation layer comprises a refractory fiber plate 3 and a block-shaped refractory fiber module 4 which are sequentially arranged in a frame structure from inside to outside, wherein the refractory fiber plate 3 and the block-shaped refractory fiber module 4 can be made of the same refractory fiber material and are only different in shape. The refractory fiber material can be an aluminum silicate refractory fiber module with the weight of 3.2 kg/block, and the physical and chemical indexes are as follows:
item Index (I)
Al2O3+SiO2,% ≥90
Bulk Density (g/cm)3),% ≤0.35
Compressive strength at room temperature, MPa: (Compression set 20% time) ≥0.50
Coefficient of thermal conductivity, w/m.k ≤0.15
Linear shrinkage of 1000 ℃ for 24h ≤2.0
Maximum service temperature, DEG C 1100
The refractory fibre deck 3 is laid over the inner surface of the cover plate 1 and a block-shaped refractory fibre module 4 is laid on the refractory fibre deck 3 in the middle of the frame structure. It should be noted that the block-shaped refractory fiber module 4 is fixed inside the cover plate 1 by an anchor, and the block-shaped refractory fiber module 4 are firmly pressed and fixed to each other. A second castable 5 is poured between the block-shaped refractory fiber modules 4 and the cover wall 2, the second castable 5 can be a light castable made of the same material as the first castable 6, and at the moment, the high-strength light castable can be adopted at the position, easy to damage, of the edge of the ladle cover to avoid abrasion to the block-shaped refractory fiber modules 4. Through the setting of the heat preservation insulating layer and the first pouring material 6 and the second pouring material 5 that the apron 1 that utilizes the steel sheet to make, the apron wall 2 that square steel pipe made, refractory fiber board 3 and the block-shaped refractory fiber module 4 are constituteed, can make ladle cover assembly form a compound ladle cover of constituteing by multiple structure multiple materials, possess effectual, the lightweight design of heat preservation and each item advantage such as structural strength height.
As shown in fig. 1-2, the cover plate 1 can be connected with a hinge hook 11 and a hanging shaft 13, the hinge hook 11 is arranged on one side of the cover plate 1 and can be hung and buckled on a steel ladle to be hinged with the steel ladle, so that the steel ladle cover can be turned over and opened or closed, and the hinge hook 11 can be directly welded on the cover plate 1. The hanging shaft 13 is arranged on the outer surface of the cover plate 1 and can be provided with one or more than one, the hanging shaft 13 is connected to a supporting seat arranged on the cover plate 1, the hanging shaft 13 can rotate on the supporting seat, and the hanging shaft 13 can be hoisted to apply hoisting force when the steel ladle cover is opened or closed, so that the steel ladle cover rotates around the hinged position of the hinge hook 11. The hanging shaft 13 has an axial direction parallel to the rotational axial direction of the hinge hook 11 to enable the ladle cover to be better rotated about the axial direction of the hinge hook 11 when the ladle cover is opened or closed.
The hanging scroll 13 can be provided with threely to finished product font distributes, and one side that is close to hinge hook 11 is provided with a hanging scroll 13, and one side of keeping away from hinge hook 11 is provided with two hanging scroll 13, and the hinge hook 11 of three different positions can hoist the application of force in the position that apron 1 is different, improves the convenience.
As shown in fig. 1, the cover body can be designed into a circular structure according to the shape of the ladle, at the moment, the cover plate 1 is in the circular structure, the cover wall 2 is in a circular ring-shaped structure arranged around the cover plate 1, a flat notch is arranged on the side edge of the circular structure, and the cover wall 2 at the position of the flat notch is correspondingly arranged into a straight shape. If the cover wall 2 is made of the square steel pipe, the square steel pipe at the position does not need to be bent and can be communicated or not communicated with the arc-shaped square steel pipe, and the square steel pipe is made into a whole after the light castable is poured, so that the structural strength is improved. The flat type breach is just to row's cinder notch position, because slag notch department bonds slag and cold steel easily, if these slag can not get in time clearance, in the recycling use, the ladle lid just can not level and smooth regular falling to the ladle on, and then influence the heat preservation effect, the ladle lid directly condemned condition of falling to break in the landing of ladle lid in addition probably appears, this situation of improvement that can be fine through setting up of flat type breach, guarantees ladle lid's safety in utilization
The surface of apron 1 is provided with strengthening rib 12, and strengthening rib 12 interlocks each other and forms a plurality of rectangle check, and the setting of strengthening rib 12 can improve the frame construction's of lid bulk strength, reduces the lid and is heated or the easy degree of atress bending deformation.
Furthermore, the reinforcing ribs 12 can be made of C-shaped steel, the section of the reinforcing ribs is C-shaped, the C-shaped steel is made of common steel materials and is easy to obtain, and the end parts of the two supporting arms of the C-shaped steel can be welded on the cover plate 1 to be connected with the cover plate 1.
The cover plate 1 in the partial rectangular grid is provided with one or more observation ports 14, the observation ports 14 can be different in size and distributed in positions, and the observation ports 14 can be used for observing conditions in the ladle and also can be used for filling sand into the ladle through the observation ports 14.
The middle part of the outer surface of the cover plate 1 can also be provided with a lifting hook 15, and the lifting hook 15 can be used for lifting the steel ladle cover for installation, disassembly or maintenance.
The principle and the implementation mode of the utility model are explained by applying a specific example, and the description of the embodiment is only used for helping to understand the method and the core idea of the utility model; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the utility model.

Claims (10)

1. A ladle cover is characterized in that: the cover comprises a cover body, the cover body includes the apron and connects the gecko on the apron, the gecko is followed the hoop of apron is arranged a week, with the apron forms the frame construction of cover body, be provided with the thermal insulation layer in the frame construction, gecko cavity and its hollow inside are filled with the light pouring material.
2. The ladle cover according to claim 1, wherein: the cover wall is a rectangular steel pipe.
3. The ladle cover according to claim 1 or 2, wherein: the heat-insulating layer comprises a refractory fiber board and a block-shaped refractory fiber module which are sequentially arranged from inside to outside, the refractory fiber board is paved on the inner surface of the cover plate, the block-shaped refractory fiber module is paved in the middle of the frame structure, and the light castable is poured between the block-shaped refractory fiber module and the cover wall.
4. A ladle cover according to claim 3, wherein: the hinge hook is arranged on one side of the cover plate, the hanging shaft is arranged on the outer surface of the cover plate, and the axial direction of the hanging shaft is parallel to the rotating axial direction of the hinge hook.
5. The steel ladle cover according to claim 4, wherein: the hanging shafts are distributed in a shape like a Chinese character 'ji', one side of each hanging shaft close to the hinge hook is provided with one hanging shaft, and the other side of each hanging shaft far away from the hinge hook is provided with two hanging shafts.
6. A ladle cover according to claim 3, wherein: the lid is circular structure, the side of circular structure is provided with straight type breach.
7. A ladle cover according to claim 3, wherein: the outer surface of the cover plate is provided with reinforcing ribs, and the reinforcing ribs are mutually staggered to form a plurality of rectangular lattices.
8. The steel ladle cover according to claim 7, wherein: the reinforcing ribs are C-shaped steel.
9. The steel ladle cover according to claim 7, wherein: and the cover plate in part of the rectangular lattices is provided with an observation port.
10. A ladle cover according to claim 3, wherein: the middle part of the outer surface of the cover plate is provided with a lifting hook.
CN202121869418.8U 2021-08-11 2021-08-11 Steel ladle cover Active CN215468055U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202121869418.8U CN215468055U (en) 2021-08-11 2021-08-11 Steel ladle cover

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202121869418.8U CN215468055U (en) 2021-08-11 2021-08-11 Steel ladle cover

Publications (1)

Publication Number Publication Date
CN215468055U true CN215468055U (en) 2022-01-11

Family

ID=79758288

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202121869418.8U Active CN215468055U (en) 2021-08-11 2021-08-11 Steel ladle cover

Country Status (1)

Country Link
CN (1) CN215468055U (en)

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Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant
PE01 Entry into force of the registration of the contract for pledge of patent right

Denomination of utility model: A type of ladle cover

Effective date of registration: 20231225

Granted publication date: 20220111

Pledgee: Weihai Commercial Bank Co.,Ltd. Zibo Branch

Pledgor: SHANDONG GUOMAO METALLURGICAL MATERIALS Co.,Ltd.

Registration number: Y2023980074132

PE01 Entry into force of the registration of the contract for pledge of patent right