Ladle with rapid repairing function

Abstract

The utility model provides a ladle with a rapid repairing function. The ladle comprises a shell, and a heat preservation layer and a working layer are sequentially arranged in the shell from outside to inside. The working layer comprises a castable layer which is close to a ladle nozzle area and is formed by surrounding casting, a ladle wall precast block which is close to the ladle wall, a corner precast block which is positioned between the ladle wall and the ladle bottom, and a ladle bottom precast block which is positioned in the center of the ladle bottom. The ladle lining is divided into the castable layer and a plurality of detachable precast block combinations, so that the lining can be quickly replaced after being locally damaged, and the maintenance time is remarkably shortened; the split type design is adopted for the ladle wall prefabricated blocks, so that during repairing, the requirement for quick disassembly can be met, during repairing, the second prefabricated block is installed in place firstly, then the first prefabricated block is installed, and the function of local quick repairing is achieved.

Description

Technical Field

[0001] This utility model belongs to the field of metal smelting technology, specifically relating to a ladle with rapid repair function. Background Technology

[0002] The molten iron ladle is an important thermal equipment in the metallurgical industry, mainly used to receive, transport, and transfer high-temperature molten iron after tapping from the blast furnace, and to complete the transfer and pouring of molten iron in the steelmaking or casting process. As a key container connecting the ironmaking and steelmaking processes, the molten iron ladle is subjected to the erosion of molten iron at temperatures above 1400℃ for a long time, and must also withstand frequent temperature changes and mechanical impacts. The quality of its inner lining directly determines the service life, production safety, and operating economy of the equipment.

[0003] Currently, the industry commonly uses monolithic castable linings and refractory brick linings, each with significant shortcomings. Monolithic castable linings, formed from a single piece of refractory castable, offer a dense, seamless structure. However, when localized damage occurs, the entire lining must be dismantled and recast, resulting in material waste and a lengthy curing process that severely impacts production continuity. While refractory brick linings theoretically allow for partial replacement, the fixed specifications of the refractory bricks and the complex construction process often require removing large areas of intact bricks to reach the damaged area. Furthermore, the numerous brick joints can lead to molten iron penetration and structural loosening. Both traditional lining structures struggle to achieve rapid and precise localized repairs, resulting in long maintenance cycles and high operating costs for molten iron ladles, thus hindering the improvement of production efficiency in metallurgical enterprises. Utility Model Content

[0004] This invention provides a molten iron ladle with rapid repair function to solve the problems mentioned in the background art, such as the need for complete dismantling and recasting of the existing molten iron ladle lining structure when it is partially damaged, and the leakage of molten iron due to excessive brick joints.

[0005] The technical solution adopted by this utility model is as follows: a ladle with rapid repair function includes an outer shell, and the interior of the outer shell is provided with an insulation layer and a working layer from the outside to the inside; the working layer includes a castable layer that is close to the ladle nozzle area and surrounds it, a ladle wall prefabricated block close to the ladle wall, a corner prefabricated block located between the ladle wall and the ladle bottom, and a ladle bottom prefabricated block located at the center of the ladle bottom. The ladle wall prefabricated blocks are evenly distributed around the center of the ladle and are arranged in multiple layers along the height direction of the ladle. The ladle wall prefabricated blocks include a first prefabricated block and a second prefabricated block. The first prefabricated block and the second prefabricated block are detachably connected. The first prefabricated block has a first side and a second side arranged parallel to each other, and the second prefabricated block has a third side and a fourth side that are at an angle to each other.

[0006] In this assembly, after the first and second prefabricated blocks are assembled into a wall-encasing prefabricated block, the second and third sides fit together, and the extension lines of the first and fourth sides coincide with the center of the outer shell. Furthermore, the outer wall arc length of the second prefabricated block is less than the overall inner wall arc length of the assembled wall-encasing prefabricated block.

[0007] The third side of the second precast block extends outward to form a T-shaped block, and the second side of the first precast block is provided with a T-shaped groove that matches the T-shaped block.

[0008] The T-slot is located on the back side of the first precast block.

[0009] The corner prefabricated blocks are provided in multiple quantities and are evenly distributed around the center of the outer shell. The inner corner of the corner prefabricated block has an arc-shaped structure.

[0010] The system also includes multiple warning elements embedded inside the precast bottom block, with one warning element located at the center of the precast bottom block and the remaining warning elements evenly distributed around the center of the precast bottom block.

[0011] The warning device has a tapered structure that is narrower at the top and wider at the bottom.

[0012] The warning device is made of corundum ceramic.

[0013] Fire clay is used to fill the spaces between the first and second precast blocks, as well as between the adjacent wall precast blocks above and below.

[0014] The insulation layer is made of aluminum silicate fiber felt.

[0015] The beneficial effects of this utility model are as follows:

[0016] This utility model adopts a modular prefabricated block structure design, dividing the lining of the molten iron ladle into a castable refractory layer and multiple detachable prefabricated blocks, which enables rapid replacement of the lining after local damage and significantly shortens the maintenance time. Among them, the ladle wall prefabricated blocks adopt a split design, which can meet the needs of rapid disassembly during repair, and can also install the second prefabricated block first and then install the first prefabricated block, so as to achieve the function of rapid local repair. Attached Figure Description

[0017] Figure 1 This is an overall structural diagram of the present invention;

[0018] Figure 2 This is a top view of the present invention;

[0019] Figure 3 This is a perspective view of the precast wall block of this utility model;

[0020] Figure 4 Explosion view of the precast wall block of this utility model Figure 1 ;

[0021] Figure 5 Explosion view of the precast wall block of this utility model Figure 2 .

[0022] in:

[0023] 1. Outer shell; 2. Insulation layer; 3. Castable refractory layer; 4. Wall precast block; 401. First precast block; 4011. First side; 4012. Second side; 4013. T-slot; 402. Second precast block; 4021. Third side; 4022. Fourth side; 4023. T-block; 5. Corner precast block; 6. Bottom precast block; 7. Warning component. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] As shown in the figure, a molten iron ladle with rapid repair function includes an outer shell 1. Inside the outer shell 1, from the outside in, are an insulation layer 2 and a working layer. The working layer includes a castable refractory layer 3 near the ladle nozzle area and surrounding it, a precast wall block 4 near the ladle wall, a corner precast block 5 located between the ladle wall and the ladle bottom, and a bottom precast block 6 located at the center of the ladle bottom. The castable refractory layer 3 can be made of high-alumina castable, alumina-magnesia castable, etc., and the precast blocks can be made of alumina-magnesia carbonaceous precast blocks, alumina-magnesia precast blocks, corundum-spinel, etc.

[0026] The precast wall blocks 4 are evenly distributed around the center of the molten iron ladle and are arranged in multiple layers along the height direction of the molten iron ladle. In this example, the precast wall blocks 4 are arranged in three layers. In the same layer, there are four precast wall blocks 4, which are evenly distributed around the center of the molten iron ladle. The precast wall blocks 4 include a first precast block 401 and a second precast block 402. The first precast block 401 and the second precast block 402 are detachably connected. The first precast block 401 has a first side 4011 and a second side 4012 arranged parallel to each other. The second precast block 402 has a third side 4021 and a fourth side 4022 that are at an angle to each other.

[0027] In this assembly, after the first prefabricated block 401 and the second prefabricated block 402 are assembled into the wall-encasing prefabricated block 4, the second side 4012 and the third side 4021 are attached to each other, and the extension lines of the first side 4011 and the fourth side 4022 coincide with the center of the outer shell 1. Furthermore, the outer wall arc length of the second prefabricated block 402 is less than the overall inner wall arc length of the assembled wall-encasing prefabricated block 4.

[0028] The aforementioned structural design allows for rapid and precise local repair when a precast block 4 of the ladle wall is partially damaged. This is achieved by disassembling the corresponding first precast block 401 and second precast block 402 together. Specifically, during the repair process, after installing the new second precast block 402 into the designated repair area, the new first precast block 401 can be quickly and precisely inserted into the designated position because the first precast block 401 has parallel first and second sides 4011 and 4012. Furthermore, the first precast block 401 and the second precast block 402 together constitute a complete cladding wall precast block 4, and the entire cladding wall precast block 4 is evenly distributed in a ring shape inside the molten iron ladle. After installation, the extension lines of the first side 4011 and the fourth side 4022 coincide with the center line of the outer shell 1, so that each precast block generates a slight squeezing force towards the center due to thermal expansion and contraction during high-temperature operation, realizing automatic fastening of the structure, thereby enhancing the stability and density of the overall lining, and effectively avoiding problems such as high-temperature molten iron penetration and structural loosening.

[0029] The third side 4021 of the second precast block 402 extends outward to form a T-shaped block 4023. The second side 4012 of the first precast block 401 is provided with a T-shaped groove 4013 that matches the T-shaped block 4023. During the repair process, the second precast block 402 is installed in the designated repair area before the first precast block 401. When the first precast block 401 is installed, the first precast block 401 and the second precast block 402 can be connected through the cooperation of the T-shaped groove 4013 and the T-shaped block 4023, so that the first precast block 401 and the second precast block 402 together form the wall-encasing precast block 4, which has the characteristics of a stable structure.

[0030] The T-slot 4013 is located on the back side of the first precast block 401, meaning that the T-slot 4013 does not penetrate the working surface of the first precast block 401. This prevents molten iron from entering the T-slot 4013 while connecting it to the second precast block 402.

[0031] The corner prefabricated blocks 5 are provided in multiples and are evenly distributed around the center of the outer shell 1. The inner corner position of the corner prefabricated blocks 5 has an arc-shaped structure. The corner prefabricated blocks 5 with arc-shaped structure are evenly arranged at the connection between the ladle wall and the ladle bottom, which optimizes the geometric structure of the corner position, effectively alleviates the thermal stress concentration phenomenon caused by structural discontinuity in this area, and further improves the overall service life and safety performance of the ladle lining.

[0032] The system also includes multiple warning elements 7 embedded inside the ladle bottom precast block 6. One warning element 7 is located at the center of the ladle bottom precast block 6, and the remaining warning elements 7 are evenly distributed around the center of the ladle bottom precast block 6. The warning elements 7 are tapered structures that are narrow at the top and wide at the bottom. They are used by operators to judge the degree of damage to the ladle bottom based on the exposed shape and size of the warning elements 7, so as to replace the ladle bottom precast block 6 in a timely manner. In this example, the warning elements 7 are made of corundum ceramic material, specifically corundum ceramic material with added colorant. Corundum material has excellent high temperature resistance and slag corrosion resistance, and can maintain a stable shape under long-term scouring by molten iron. The warning elements 7 indicate the degree of wear of the ladle bottom precast block 6 through the exposure of color or structure, so as to facilitate operators to judge the maintenance time in a timely manner and improve safety.

[0033] Fire clay is filled between the first precast block 401 and the second precast block 402, as well as between the adjacent wall precast blocks 4 above and below. This serves to provide a certain buffer space for thermal expansion and contraction while playing a connecting and fixing role, thereby preventing crack propagation due to thermal stress concentration and improving the long-term stability of the structure.

[0034] The insulation layer 2 is made of aluminum silicate fiber felt, which serves to provide heat insulation, preventing the molten iron from cooling down and also preventing the outer shell 1 from getting too hot.

[0035] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A ladle with rapid repair function, characterized in that, The ladle includes an outer shell, and inside the outer shell, from the outside to the inside, there are an insulation layer and a working layer. The working layer includes a layer of castable material that is near the ladle nozzle area and surrounds it, a precast block of the ladle wall near the ladle wall, a corner precast block located between the ladle wall and the ladle bottom, and a precast block of the ladle bottom located at the center of the ladle bottom. The precast blocks of the ladle wall are evenly distributed around the center of the ladle and are arranged in multiple layers along the height direction of the ladle. The precast blocks of the ladle wall include a first precast block and a second precast block. The first precast block and the second precast block are detachably connected. The first precast block has a first side and a second side that are parallel to each other, and the second precast block has a third side and a fourth side that are at an angle to each other. In this assembly, after the first and second prefabricated blocks are assembled into a wall-encasing prefabricated block, the second and third sides fit together, and the extension lines of the first and fourth sides coincide with the center of the outer shell. Furthermore, the outer wall arc length of the second prefabricated block is less than the overall inner wall arc length of the assembled wall-encasing prefabricated block.

2. The molten iron ladle with rapid repair function according to claim 1, characterized in that, The third side of the second precast block extends outward to form a T-shaped block, and the second side of the first precast block is provided with a T-shaped groove that matches the T-shaped block.

3. A ladle with rapid repair function according to claim 2, characterized in that, The T-slot is located on the back side of the first precast block.

4. A ladle with rapid repair function according to claim 1, characterized in that, Multiple corner precast blocks are provided and evenly distributed around the center of the outer shell, and the inner corner of the corner precast block has an arc-shaped structure.

5. A ladle with rapid repair function according to claim 1, characterized in that, It also includes multiple warning pieces embedded inside the precast block of the bottom, with one warning piece located at the center of the precast block and the remaining warning pieces evenly distributed around the center of the precast block.

6. A ladle with rapid repair function according to claim 5, characterized in that, The warning piece has a tapered structure that is narrower at the top and wider at the bottom.

7. A ladle with rapid repair function according to claim 5, characterized in that, The warning piece is made of corundum ceramic.

8. A ladle with rapid repair function according to claim 1, characterized in that, Fire clay is used to fill the spaces between the first and second precast blocks, as well as between adjacent wall precast blocks.

9. A ladle with rapid repair function according to claim 1, characterized in that, The insulation layer is made of aluminum silicate fiber felt.

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