Improved novel steel ladle lining
By incorporating a nano-insulation layer tightly bonded to rigid fiberboard inside the ladle, and combining it with a lightweight and high-grade permanent layer to form a composite insulation structure, the problem of nanoboard pulverization is solved, the insulation effect and service life of the ladle are improved, and energy conservation and consumption reduction are achieved.
Patent Information
- Application Number
- CN202520008216.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-03
- Publication Date
- 2026-01-23
- Estimated Expiration
- 2035-01-03
AI Technical Summary
The nano-plates or fiberboards used in existing steel ladle linings are prone to pulverization during use, which leads to a decrease in insulation performance, poses safety hazards, and results in significant heat loss, affecting the service life and energy consumption of the steel ladle.
The nano-insulation layer is tightly bonded to the rigid fiberboard, combined with a lightweight and high-grade permanent layer to form a composite insulation structure that blocks heat transfer, prevents the nano-insulation layer and rigid fiberboard from sintering, and extends service life.
It effectively improves the insulation effect of the ladle, reduces heat loss, extends the service life of the ladle lining, reduces safety hazards, and achieves energy conservation and consumption reduction.
Smart Images
Figure CN223819644U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a ladle lining technical field, specifically an improved novel ladle lining. BACKGROUND
[0002] Metallurgical industry is a big energy consumer in our country, and the steel ladle, a key container for steelmaking, accounts for a large proportion in energy consumption. At present, the surface temperature of the steel ladle is high, at 250-400 DEG C, and the heat loss is large, resulting in energy waste. Reducing the surface temperature of the steel ladle and the heat loss of the steel ladle is the main way to realize energy saving and consumption reduction.
[0003] At present, nano fiber board or fiber board is generally used in the steel ladle shell to build the heat preservation layer, and then high alumina brick or high alumina castable is used to build the permanent layer. This kind of mode can achieve good effect in the first two ladle service periods, but after the two ladle service periods, the nano board or fiber board is sintered and pulverized, and the heat preservation effect is greatly reduced. At the same time, due to the pulverization of the heat preservation layer, the permanent layer and the working layer are easily displaced to the steel shell, the structure of the steel ladle is changed, there is a large safety hidden danger, and the steel ladle leakage accident is easily caused. UTILITY MODEL CONTENT
[0004] Therefore, the utility model wants to solve the technical problem to provide an improved novel ladle lining which can make the nano heat insulation board fully play the heat preservation effect, is simple and fast to use, can reduce the temperature drop of the steel ladle as a whole, and has good heat preservation effect.
[0005] In order to solve the above technical problems, the utility model provides the following technical scheme: an improved novel ladle lining, which comprises a steel ladle shell, a nano heat insulation layer, a hard fiber board, a light permanent layer, a high-grade permanent layer and a working layer are sequentially arranged in the steel ladle shell, the inner side of the working layer is in contact with molten steel, the outer side of the nano heat insulation layer is tightly combined with the inner side of the steel ladle shell, the inner side of the nano heat insulation layer is tightly combined with the hard fiber board, the outer side of the light permanent layer is tightly combined with the inner side of the hard fiber board, the inner side of the light permanent layer is tightly combined with the outer side of the high-grade permanent layer, and the inner side of the high-grade permanent layer is tightly combined with the outer side of the working layer.
[0006] The light permanent layer of the improved novel ladle lining is a light brick layer or a light castable layer.
[0007] The high-grade permanent layer of the improved novel ladle lining is a high-grade corundum spinel brick layer or a castable layer.
[0008] The working layer of the improved novel ladle lining is a magnesia carbon brick layer, an alumina magnesia carbon brick layer, a magnesia alumina carbon brick layer or an alumina magnesia castable layer.
[0009] The improved ladle lining has the nano heat insulation layer with a thickness less than or equal to 30 mm.
[0010] The improved ladle lining has the hard fiber plate with a thickness less than or equal to 30 mm.
[0011] The improved ladle lining has the light permanent layer with a thickness of 75-85 mm.
[0012] The improved ladle lining has the high-grade permanent layer with a thickness of 45-55 mm.
[0013] The improved ladle lining has the nano heat insulation layer with a thickness less than or equal to 30 mm.
[0014] The improved ladle lining has the nano heat insulation layer with a thickness less than or equal to 30 mm.
[0015] The technical scheme of the improved ladle lining has the following beneficial technical effects:
[0016] The nano heat insulation layer and the hard fiber plate are tightly matched to form a composite heat insulation layer, and under the protection of the light permanent layer and the high-grade permanent layer, a large amount of heat transferred from the working layer to the nano heat insulation layer and the hard fiber plate can be effectively blocked, so that the nano heat insulation layer and the hard fiber plate are not sintered and powdered during use, the heat insulation effect of the composite heat insulation layer can be fully played, and the continuous casting is ensured to be smoothly performed; and the overall service life and the overall heat insulation effect of the ladle lining are improved. BRIEF DESCRIPTION OF DRAWINGS
[0017] Figure 1 The sectional structure schematic view of the improved ladle lining is shown in the drawing.
[0018] The reference signs in the drawing are as follows: 1 - steel ladle shell; 2 - nano heat insulation layer; 3 - hard fiber plate; 4 - light permanent layer; 5 - high-grade permanent layer; and 6 - working layer. DETAILED DESCRIPTION
[0019] The improved ladle lining has the nano heat insulation layer with a thickness less than or equal to 30 mm. Figure 1As shown, including ladle steel shell 1, the ladle steel shell 1 inside sequentially provided with nano insulation layer 2, hard fiber plate 3, light permanent layer 4, high-grade permanent layer 5 and working layer 6, the inner side of the working layer 6 is in contact with molten steel, the outer side of the nano insulation layer 2 is closely combined with the inner side of the ladle steel shell 1, the inner side of the nano insulation layer 2 is closely combined with the hard fiber plate 3, the outer side of the light permanent layer 4 is closely combined with the inner side of the hard fiber plate 3, the inner side of the light permanent layer 4 is closely combined with the outer side of the high-grade permanent layer 5, and the inner side of the high-grade permanent layer 5 is closely combined with the outer side of the working layer 6.
[0020] In the prior art, the nano plate is used in concave-convex cooperation with the heat preservation plate, or the nano plate is used in cooperation with the fiber plate, the first structure still has more heat transferred from the permanent layer to the nano plate through the groove, so that the heat preservation effect of the nano plate is not good, and the second structure is easy to fail due to the high temperature at the interface between the fiber plate and the permanent layer, which exceeds the use temperature range of the fiber plate; in the utility model, the nano insulation layer 2 is closely cooperated with the hard fiber plate 3 without the concave-convex cooperation structure, and the light permanent layer 4 and the high-grade permanent layer 5 are arranged, the heat transferred from the light permanent layer 4 is reduced, a large amount of heat transferred from the working layer 6 to the hard fiber plate 3 and the nano insulation layer 2 can be effectively blocked, so that the nano insulation layer 2 and the hard fiber plate 3 are not sintered and not powdered in the use process, and the heat insulation effect of the heat preservation layer can be fully played.
[0021] The light permanent layer 4 is a light brick layer or a light castable layer, the thickness of the light permanent layer 4 is 75-85mm; the high-grade permanent layer 5 is a high-grade corundum spinel brick layer or a castable layer, the thickness of the high-grade permanent layer 5 is 45-55mm; the working layer 6 is a magnesia-carbon brick layer, an aluminum-magnesia-carbon brick layer, a magnesia-alumina-carbon brick layer or an aluminum-magnesia castable layer.
[0022] The thickness ratio of the nano insulation layer 2 to the hard fiber plate 3 is 2:1, 1:1 or 1:2, the thickness of the nano insulation layer 2 is less than or equal to 30mm, and the thickness of the hard fiber plate 3 is less than or equal to 30mm.
[0023] As Figure 1As shown, the thickness of the working layer 6 is 160mm of the magnesium carbon brick layer, the thickness of the high-grade permanent layer 5 is 50mm, the thickness of the light permanent layer 4 is 80mm, the thickness of the hard fiberboard 3 is 15mm, the thickness of the nano heat insulation layer 2 is 15mm, the nano heat insulation layer 2 is first built in the steel plant, then the hard fiberboard layer 3 is constructed, then the light permanent layer 4 and the high-grade permanent layer 5 are constructed, finally the working layer 6 is constructed, the ladle capacity is 100 tons, the temperature of the ladle steel shell 1 is 212 DEG C, and the ladle steel shell 1 is continuously used for eight ladle roles, the maximum temperature of the ladle steel shell 1 is 260 DEG C, the temperature of the ladle steel shell 1 of the conventional structure is 253 DEG C, and the temperature of the ladle steel shell 1 is increased to above 300 DEG C after being used to the second ladle role, it can be obviously seen that the ladle lining adopting the utility model significantly improves the heat preservation effect of the ladle lining and reduces the heat loss.
[0024] Obviously, the above-mentioned embodiments are only examples for clearly illustrating, but not limit the embodiments. For ordinary skilled in the art, other different forms of changes or variations can be made on the basis of the above description. Here, all the embodiments need not and cannot be exhausted. The changes or variations derived from them are still within the protection scope of the patent application claims.
Claims
1. An improved novel steel ladle liner, characterized in that, The system includes a steel ladle and steel shell (1), and inside the steel ladle and steel shell (1) are arranged a nano-insulation layer (2), a rigid fiberboard (3), a lightweight permanent layer (4), a high-grade permanent layer (5), and a working layer (6). The inner side of the working layer (6) is in contact with molten steel. The outer side of the nano-insulation layer (2) is tightly attached to the inner side of the steel ladle and steel shell (1). The inner side of the nano-insulation layer (2) is tightly attached to the rigid fiberboard (3). The outer side of the lightweight permanent layer (4) is tightly attached to the inner side of the rigid fiberboard (3). The inner side of the lightweight permanent layer (4) is tightly attached to the outer side of the high-grade permanent layer (5). The inner side of the high-grade permanent layer (5) is tightly attached to the outer side of the working layer (6).
2. The improved novel steel ladle liner according to claim 1, characterized in that, The lightweight permanent layer (4) is a lightweight brick layer or a lightweight castable layer.
3. The improved novel steel ladle liner according to claim 1, characterized in that, The high-grade permanent layer (5) is a high-grade corundum spinel brick layer or a castable layer.
4. An improved novel steel ladle liner according to claim 1, characterized in that, The working layer (6) is a magnesia-carbon brick layer, an aluminum-magnesia-carbon brick layer, a magnesia-alumina-carbon brick layer, or an aluminum-magnesia castable layer.
5. An improved novel steel ladle liner according to claim 1, characterized in that, The thickness of the nano-insulation layer (2) is less than or equal to 30 mm.
6. An improved novel steel ladle liner according to claim 1, characterized in that, The thickness of the hard fiberboard (3) is less than or equal to 30 mm.
7. An improved novel steel ladle liner according to claim 1, characterized in that, The thickness of the lightweight permanent layer (4) is 75-85 mm.
8. An improved novel steel ladle liner according to claim 1, characterized in that, The thickness of the high-grade permanent layer (5) is 45-55 mm.
9. An improved novel steel ladle liner according to any one of claims 1-8, characterized in that, The thickness ratio of the nano-insulation layer (2) to the thickness of the rigid fiberboard (3) is 2:
1.
10. An improved novel steel ladle liner according to any one of claims 1-8, characterized in that, The thickness ratio of the nano-insulation layer (2) to the thickness of the rigid fiberboard (3) is 1:1 or 1:2.