CN211248306U - Steel ladle and steel ladle cover thereof - Google Patents
Steel ladle and steel ladle cover thereof Download PDFInfo
- Publication number
- CN211248306U CN211248306U CN201922487850.XU CN201922487850U CN211248306U CN 211248306 U CN211248306 U CN 211248306U CN 201922487850 U CN201922487850 U CN 201922487850U CN 211248306 U CN211248306 U CN 211248306U
- Authority
- CN
- China
- Prior art keywords
- fiber module
- ladle cover
- polycrystalline fiber
- alumina
- alumina polycrystalline
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
- Compositions Of Oxide Ceramics (AREA)
Abstract
The utility model discloses a ladle and ladle cover thereof, ladle cover include the lid, and the lid includes the barrel and locates the apron at barrel top, is equipped with aluminium oxide polycrystalline fiber module in the barrel, and the bottom surface of aluminium oxide polycrystalline fiber module is equipped with hot protective coating. The application provides a steel ladle cover's inner lining structure adopts aluminium oxide polycrystalline fiber module and thermal protection coating complex to form the heat preservation, has improved steel ladle cover's high temperature resistance, has prolonged steel ladle cover's life, still makes steel ladle cover have light in weight, anti erosion ability is good, the excellent advantage of thermal insulation performance.
Description
Technical Field
The utility model relates to a steelmaking and continuous casting technical field, more specifically say, relate to a ladle cover. Furthermore, the utility model discloses still relate to a ladle including above-mentioned ladle cover.
Background
The ladle is used as a steel container between the steelmaking process and the continuous casting process, and molten steel is received and poured before an open hearth furnace, an electric furnace or a converter. The ladle is generally a cylindrical container with an opening at the upper end, heat in the ladle can radiate outwards rapidly through the opening, and the rapid dissipation of the heat causes great waste. The steel ladle is covered with a cover, so that the radiation heat loss can be reduced, and the aims of saving energy and reducing consumption are fulfilled. The steel ladle cover mainly comprises a steel ladle cover body and a lining structure, the traditional lining structure is made of refractory castable, but the lining structure is heavy in weight, inconvenient to uncover, large in heat conductivity coefficient, fast in heat dissipation, poor in thermal shock stability, and the lining is prone to cracking and falling due to rapid cooling and rapid heating in the uncovering process. Therefore, the lightweight of the ladle lining becomes a research hotspot, and the structure of the full-fiber lining is gradually developed.
The full-fiber lining structure is generally made of high-aluminum refractory fibers, the full-fiber lining structure solves the problems of heavy weight and quick heat dissipation of the lining of the steel ladle cover, but when the steel ladle is used as a container for containing molten steel, the molten steel can corrode the lining of the steel ladle cover to a certain degree in the using process, the damage of the fiber lining is accelerated, and the high-aluminum refractory fibers are easy to crystallize and shrink at the high temperature of 1400 ℃ and generate gaps, so that the heat preservation effect of the steel ladle cover is reduced, and the service life of the steel ladle cover is prolonged
In summary, how to improve the high temperature resistance of the ladle cover and prolong the service life of the ladle cover is a problem to be solved by those skilled in the art.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model aims at providing a ladle cover, its adopts the composite construction who adopts alumina polycrystalline fiber module and thermal protection dope layer as the inner lining structure of lid, has improved ladle cover's high temperature resistance performance, has prolonged ladle cover's life simultaneously. Another object of the utility model is to provide a ladle including above-mentioned ladle cover.
In order to achieve the above object, the present invention provides the following technical solutions:
the steel ladle cover comprises a cover body, wherein the cover body comprises a cylinder body and a cover plate arranged at the top of the cylinder body, an alumina polycrystalline fiber module is arranged in the cylinder body, and a thermal protection coating is arranged on the bottom surface of the alumina polycrystalline fiber module.
Preferably, the inner side wall of the cylinder is attached to the circumferential side wall of the alumina polycrystalline fiber module.
Preferably, the alumina polycrystalline fiber module is formed by folding an alumina fiber blanket.
Preferably, protection plates are arranged on two opposite sides of the alumina polycrystalline fiber module, and the protection plates and the alumina polycrystalline fiber module are bound and fixed through ropes.
Preferably, the alumina polycrystalline fiber module is provided with a hole, a thermal protection coating protrusion is poured into the hole, and the thermal protection coating protrusion and the thermal protection coating form an integrated structure.
Preferably, a backing layer is arranged between the alumina polycrystalline fiber module and the cover plate.
Preferably, the backing layer is an aluminum silicate ceramic fiber blanket layer.
Preferably, the cover plate is provided with a reinforcing rib.
A ladle comprises any one of the ladle covers.
The utility model provides a steel ladle cover includes the lid, and the lid includes barrel and apron, is equipped with aluminium oxide polycrystalline fiber module in the barrel, and the bottom surface of aluminium oxide polycrystalline fiber module is equipped with the thermal protection coating.
Compared with the prior art, the utility model provides an in the barrel of ladle cover, adopt the integrated configuration of aluminium oxide polycrystalline fiber module and thermal protection coating to scribble as ladle inside lining heat preservation. The alumina polycrystalline fiber is crystalline fiber, and the problem of crystallization shrinkage of the high-alumina refractory fiber in the high-temperature use process is avoided, so that the temperature resistance of the steel ladle cover is improved, and the service life of the steel ladle cover is prolonged. In addition, compared with high-alumina refractory fibers, the alumina polycrystalline fibers have good molten steel erosion resistance; compared with the traditional alumina silicate fiber, the alumina polycrystalline fiber has higher use temperature, good heat insulation performance and small high-temperature use shrinkage.
Meanwhile, the surface of the alumina polycrystalline fiber module is coated with a thermal protection coating, and the thermal protection coating forms a protective layer on the surface of the alumina polycrystalline fiber module, so that the shrinkage of the alumina polycrystalline fiber module can be slowed down, the molten steel erosion resistance and the heat preservation performance of the lining of the steel ladle cover are improved, the service life of the steel ladle cover is prolonged, and the purposes of energy conservation and consumption reduction are achieved.
The application also provides a steel ladle with the beneficial effects.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a front view of a ladle cover according to the present invention;
FIG. 2 is a schematic horizontal cross-sectional view of the ladle cover according to the present invention;
fig. 3 is a schematic view of the connection manner of the anchoring member provided by the present invention;
fig. 4 is a partial enlarged view of the holes formed in the alumina polycrystalline fiber module according to the present invention.
The reference numerals in FIGS. 1-4 are: the thermal protection cover comprises a cover body 1, a back lining layer 2, an alumina polycrystalline fiber module 3, a thermal protection coating 4, a reinforcing rib 5, a lifting ring 6, a bolt 7, an installation tool 8 and a hole 9.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1 to 4, the steel ladle cover provided by the present application includes a cover body 1, the cover body 1 includes a cylinder and a cover plate disposed on the top of the cylinder, an alumina polycrystalline fiber module 3 is disposed in the cylinder, and a thermal protective coating 4 is disposed on the bottom surface of the alumina polycrystalline fiber module 3.
Specifically, the barrel is the inside hollow tubular structure, and its top sets up the apron to seal the top surface of barrel, the bottom of barrel does not have the bottom plate simultaneously. In order to increase the strength of the lid body 1, the lid plate may be provided with a rib 5, and the rib 5 may extend in the diameter direction of the lid plate. For the convenience of hoisting, a hoisting ring 6 can be arranged above the reinforcing rib 5, and the reinforcing rib 5 can directly penetrate through the hoisting ring 6 without drilling a connecting hole, so that the assembly of the hoisting ring 6 is realized.
Optionally, in order to improve the heat preservation effect, a backing layer 2 may be disposed between the cover plate and the alumina polycrystalline fiber module 3, and the backing layer 2 is laid on the lower surface of the cover plate. The backing layer 2 may in particular be a blanket layer of aluminium silicate ceramic fibres.
The alumina polycrystalline fiber in the alumina polycrystalline fiber module 3 is one of crystalline ceramic fibers in which Al is contained2O3The content is 72-99%, and the alumina polycrystalline fiber is the fiber existing in the prior art. The volume density of the alumina polycrystalline fiber module 3 is 100-200 kg/m3。
In actual processing, the alumina polycrystalline fiber module 3 can be directly processed into a complete block structure with proper specification and shape from alumina polycrystalline fibers. For ease of processing, the alumina polycrystalline fiber modules 3 are preferably arranged in a flat array, which may be folded from an alumina fiber blanket. Alternatively, protective sheets may be provided on opposite sides of the alumina polycrystalline fiber module 3, and the protective sheets on both sides are fixed on both sides of the alumina polycrystalline fiber module 3 by strings.
In actual use, considering that the lid body 1 is cylindrical and the alumina polycrystalline fiber module 3 is cubic, the alumina polycrystalline fiber module 3 has a fillet space at the circular arc portion of the lid body 1, and in order to reduce the fillet space as much as possible, it is preferable to cut the alumina polycrystalline fiber module 3 at the fillet portion and attach the inner wall of the cylinder to the circumferential side wall of the alumina polycrystalline fiber module 3. The cut alumina polycrystalline fiber modules 3 may be bonded using a thermal protective coating.
During the assembly process, taking the steel ladle cover provided with the backing layer 2 as an example, the cover plate, the backing layer 2 and the alumina polycrystalline fiber module 3 are connected in an anchoring manner by adopting an anchoring piece, and the anchoring piece is a screw nut anchoring piece in structural form. In operation, the bolts 7 are first pre-welded to the cover plate, the bolts 7 are passed through the backing layer 2, and then the guide bar is screwed onto the small ends of the bolts 7. The mode that aluminium oxide polycrystalline fiber module 3 adopted the platoon on back sheet 2, and aluminium oxide polycrystalline fiber module 3 can pre-buried central plastic tubing at folding in-process, passes the guide bar with aluminium oxide polycrystalline fiber module 3's central plastic tubing and leans on to back sheet 2, then adopts special spanner or other mounting tool 8 to screw the nut to the screw rod on, screws off the guide bar at last.
The thermal protective coating is used to protect the alumina polycrystalline fiber module 3, and the thermal protective coating is applied to the surface of the alumina polycrystalline fiber module 3 to form the thermal protective coating 4, where the surface is not limited to the bottom surface, and may include the surface of any position of the alumina polycrystalline fiber module 3. The thickness of the thermal protection coating 4 can be 5-10 mm.
Further, in order to improve the bonding effect of alumina polycrystalline fiber module 3 and thermal protection coating 4, in the embodiment that this application provided, alumina polycrystalline fiber module 3 is equipped with hole 9, and it is protruding to have poured thermal protection coating in the hole 9, and thermal protection coating is protruding to form the integral type structure with thermal protection coating 4.
In actual operation, a puncher is used for punching holes in the alumina polycrystalline fiber module 3, the punched holes 9 can be distributed substantially uniformly or randomly, and the holes 9 do not need to penetrate through the alumina polycrystalline fiber module 3. Then, pouring the thermal protection coating into the hole 9 by using a glue gun to form a thermal protection coating bulge; then, the surface of the alumina polycrystalline fiber module 3 is coated with thermal protection coating to form a thermal protection coating layer 4. The thermal protection coating in the hole 9 and the thermal protection coating on the surface form a whole, so that the thermal protection coating 4 is firmer and is not easy to fall off.
Optionally, the diameter of the holes 9 is 8-12 mm, the hole depth is 10-20 mm, and the punching density is 20-50/m2The number of the holes punched too much affects the strength of the alumina polycrystalline fiber module 3, and the number of the holes punched too little plays a role in enhancing the bonding strength between the thermal protective coating 4 and the alumina polycrystalline fiber module 3.
The steel ladle provided by the application is simple in process, good in molten steel erosion resistance, excellent in thermal shock resistance, small in shrinkage under a high-temperature condition, good in heat preservation performance and light in weight. The back lining layer 2 and the heat preservation layer are arranged on the inner side of the cover body 1, and the heat preservation layer is formed by compounding the alumina polycrystalline fiber module 3 and the thermal protection coating. The alumina polycrystalline fiber module 3 overcomes the defect of crystallization shrinkage of the high-alumina refractory fiber at high temperature, and the alumina polycrystalline fiber module 3 has better erosion resistance and thermal shock resistance than the high-alumina refractory material, thereby prolonging the service life of the lining of the steel ladle cover. The thermal protection coating plays a role in protecting the alumina polycrystalline fiber module 3, and improves the erosion resistance and the heat preservation effect of the heat preservation layer.
The application also provides a steel ladle, which comprises any one of the steel ladle covers. The ladle has the same beneficial effects due to the use of the ladle cover. For the structure of other parts of the ladle, please refer to the prior art, and the description is omitted here.
The embodiments are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The ladle and the ladle cover thereof provided by the utility model are introduced in detail. The principles and embodiments of the present invention have been explained herein using specific examples, and the above descriptions of the embodiments are only used to help understand the method and its core ideas of the present invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.
Claims (9)
1. The steel ladle cover is characterized by comprising a cover body (1), wherein the cover body (1) comprises a cylinder body and a cover plate arranged at the top of the cylinder body, an alumina polycrystalline fiber module (3) is arranged in the cylinder body, and a thermal protection coating (4) is arranged on the bottom surface of the alumina polycrystalline fiber module (3).
2. The ladle cover according to claim 1, wherein the inner side wall of the cylinder is attached to the circumferential side wall of the alumina polycrystalline fiber module (3).
3. The ladle cover according to claim 1, wherein the alumina polycrystalline fiber module (3) is folded from an alumina fiber blanket.
4. The ladle cover according to claim 3, wherein the alumina polycrystalline fiber module (3) is provided with protective plates at two opposite sides, and the protective plates and the alumina polycrystalline fiber module (3) are bound and fixed through ropes.
5. A ladle cover according to any one of claims 1 to 4, wherein the alumina polycrystalline fiber module (3) is provided with holes (9), and the holes (9) are filled with thermal protection coating protrusions, and the thermal protection coating protrusions and the thermal protection coating layer (4) form an integral structure.
6. A ladle cover according to claim 5, wherein a backing layer (2) is provided between the alumina polycrystalline fibre module (3) and the cover plate.
7. The ladle cover according to claim 6, wherein the backing layer (2) is a blanket layer of aluminium silicate ceramic fibres.
8. A steel ladle cover according to claim 7, wherein the cover plate is provided with reinforcing ribs (5).
9. A ladle comprising a ladle cover according to any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922487850.XU CN211248306U (en) | 2019-12-30 | 2019-12-30 | Steel ladle and steel ladle cover thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922487850.XU CN211248306U (en) | 2019-12-30 | 2019-12-30 | Steel ladle and steel ladle cover thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211248306U true CN211248306U (en) | 2020-08-14 |
Family
ID=71989216
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922487850.XU Active CN211248306U (en) | 2019-12-30 | 2019-12-30 | Steel ladle and steel ladle cover thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211248306U (en) |
-
2019
- 2019-12-30 CN CN201922487850.XU patent/CN211248306U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN206392851U (en) | A kind of light thermal-insulation steel ladle cover | |
| CN211248306U (en) | Steel ladle and steel ladle cover thereof | |
| CN103423998A (en) | Light multifunctional industrial kiln wall structure with composite layers | |
| CN209485060U (en) | A kind of light fire brick | |
| CN201945180U (en) | Polycrystal alumina fiber composite module lining structure of high-temperature heating furnace door | |
| CN211451852U (en) | Ferronickel electric furnace with magnesium-carbon composite furnace lining | |
| CN110355355B (en) | Composite structure type steel ladle cover capable of reversely heating steel ladle lining | |
| CN202138623U (en) | Hopper for aluminum liquid | |
| CN212109535U (en) | Novel high-temperature-resistant furnace lining | |
| CN201152687Y (en) | Liner construction of roller rod furnace | |
| CN206670358U (en) | A kind of heat-treatment furnace lining structure | |
| CN212339943U (en) | Heat insulation structure of furnace cover of aluminum smelting furnace | |
| CN112808940A (en) | Composite riser sleeve for feeding large steel casting | |
| CN210426102U (en) | Pouring structure for recycled refractory bricks | |
| CN201960102U (en) | Long nozzle for continuously casting pouring tundish | |
| CN202254838U (en) | Smelting furnace door sill | |
| CN220486227U (en) | Pier friction energy dissipation protector | |
| CN211552450U (en) | Novel composite kiln lining | |
| CN220329911U (en) | Heating and heat-preserving riser | |
| CN218660798U (en) | Special heat-insulating membrane of compound seasoning drying equipment | |
| CN203668200U (en) | Energy-saving electric crucible furnace | |
| CN218710732U (en) | Water beam composite wrapping structure of steel rolling heating furnace and water beam composite structure of steel rolling heating furnace | |
| CN220911981U (en) | Heat preservation furnace body of industrial silicon smelting furnace and industrial silicon smelting furnace | |
| CN214791260U (en) | Nano-plate composite ceramic fiber lining structure with good heat conduction effect | |
| CN211170917U (en) | Aluminum cell lining with good heat insulation performance |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |