Steel ladle bottom safety layer masonry structure

Abstract

The utility model relates to the technical field of steel ladles, and particularly discloses a steel ladle bottom safety layer masonry structure which comprises a permanent layer, a ladle bottom working layer, a ladle bottom safety layer, a ladle cavity and a ladle wall, the permanent layer is evenly arranged on the inner wall of the ladle cavity, the ladle bottom safety layer is evenly laid at the upper end of the permanent layer, and the ladle bottom working layer is evenly arranged at the upper end of the ladle bottom safety layer. The ladle wall is arranged at the upper end of the ladle bottom working layer and evenly laid along the inner side of the permanent layer. An original one-layer ladle bottom is changed into the two-layer ladle bottom, safety is enhanced, in the using process, when the ladle bottom working layer is etched or the rotating block is broken after being used for a long time, the ladle bottom safety layer can be exposed, the warning effect is achieved, the etching degree of the ladle bottom working layer can be distinguished only in a naked eye observation mode, and the safety of the ladle bottom is improved. The etching depth of the ladle bottom working layer can be quickly identified, and the detection complexity is reduced while the judgment efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of steel ladle technology, and in particular to a steel ladle bottom safety layer masonry structure. Background Technology

[0002] Currently, steel ladles are important components in the metallurgical industry. Their function is to receive molten steel from upstream steelmaking furnaces such as converters and transport it to external refining equipment or continuous casting sites for casting operations. The lining structure of a steel ladle typically includes an insulation layer, a permanent layer, a slag line zone, a molten pool zone, a working layer, and a ladle rim zone. Different areas of the lining structure are subjected to different intensities of high temperature, chemical corrosion, and mechanical erosion. Due to the composition and process route, silicon-killed steel has a high free oxygen content in the molten steel, which has a significant impact on the service life of the ladle refractory materials and cannot be effectively used.

[0003] The prior art CN112264612A provides a ladle masonry structure and a method for using the ladle, including: an insulation layer, which is closely attached to the inner wall of the ladle shell; a permanent layer, which is formed on the inner wall of the insulation layer; a slag line zone, which is formed at the upper slag line part inside the ladle; a molten pool zone, which is formed at the lower molten pool part inside the ladle; a bottom working layer, which is formed at the bottom of the ladle; and a ladle edge zone, which is formed at the upper edge of the ladle. The insulation layer is made of high-strength magnesium-silicon insulation board; the permanent layer is integrally cast using CA6-based insulating castable; the slag line layer is constructed using magnesium-carbon bricks; the molten pool zone and the bottom working layer are constructed using magnesium-calcium bricks; and the ladle edge zone is constructed using magnesium-carbon bricks.

[0004] However, existing technologies cannot quickly determine the erosion height of the working layer, which necessitates periodically using equipment to measure the thickness of the working layer of the ladle to ensure its safe and stable use. The measurement process is complex and cumbersome, and quick judgment is not possible. Utility Model Content

[0005] The purpose of this utility model is to provide a steel ladle bottom safety layer masonry structure, which aims to solve the technical problem in the prior art that the height of erosion of the working layer cannot be quickly known, which leads to the need to regularly use equipment to measure the thickness of the steel ladle working layer to ensure the safe and stable use of the steel ladle. The measurement process is complicated and cumbersome, and it is impossible to make a quick judgment.

[0006] To achieve the above objectives, this utility model employs a steel ladle bottom safety layer masonry structure, comprising a permanent layer, a bottom working layer, a bottom safety layer, a cavity, and a wall. The permanent layer is uniformly arranged along the inner wall of the cavity, the bottom safety layer is uniformly laid on the upper end of the permanent layer, the bottom working layer is uniformly arranged on the upper end of the bottom safety layer, and the wall is arranged on the upper end of the bottom working layer, and the wall is uniformly laid along the inner side of the permanent layer.

[0007] The height of the middle part of the bottom working layer is higher than the height of the surrounding parts, thus the middle part of the bottom working layer is a raised structure.

[0008] The bottom safety layer is composed of multiple sets of 300mm*150mm*30mm magnesium-carbon bricks laid evenly.

[0009] The permanent layer includes a bottom permanent layer, a wall permanent layer, and a slag line permanent layer. The bottom permanent layer is disposed inside the cavity and is evenly laid at the bottom of the cavity. The wall permanent layer is disposed inside the cavity and is evenly laid at the top of the bottom permanent layer. The slag line permanent layer is disposed inside the cavity and is evenly laid at the top of the wall permanent layer.

[0010] The wall covering includes a wall covering working layer and a slag line working layer. The wall covering working layer is fixedly connected to the permanent wall covering layer and is evenly laid on the inner side of the permanent wall covering layer. The slag line working layer is fixedly connected to the permanent slag line layer and is evenly laid on the inner side of the permanent slag line layer.

[0011] The upper end of the slag line working layer has an inclined edge.

[0012] The steel ladle bottom safety layer masonry structure also includes a wedge-shaped ring, which is fixedly connected to the ladle cavity and located inside the cavity. The wedge-shaped ring and the slag line working layer form a clear space area.

[0013] The beneficial effects of this utility model's steel ladle bottom safety layer masonry structure are as follows: The two-layer structure, consisting of the bottom working layer and the bottom safety layer, replaces the original single-layer bottom layer with a two-layer structure, enhancing safety. During use, if the bottom working layer is corroded or breaks due to prolonged use, the bottom safety layer will be exposed, serving as a warning. The degree of corrosion of the bottom working layer can be determined visually, allowing for rapid identification of the depth of corrosion, improving judgment efficiency while reducing detection complexity. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of a steel ladle bottom safety layer masonry structure according to the present invention.

[0016] Figure 2 This is a schematic diagram of the structure of the magnesia-carbon brick of this utility model.

[0017] 101-Bottom working layer, 102-Bottom safety layer, 103-Cavity, 104-Bottom permanent layer, 105-Wall permanent layer, 106-Slag line permanent layer, 107-Wall working layer, 108-Slag line working layer, 109-Edge, 110-Wedge ring, 111-Clear area. Detailed Implementation

[0018] Please see Figure 1 and Figure 2 , Figure 1 This is a structural diagram of a steel ladle bottom safety layer masonry structure according to this utility model. Figure 2 This is a schematic diagram of the structure of the magnesia-carbon brick of this utility model.

[0019] This utility model provides a steel ladle bottom safety layer masonry structure, including a permanent layer, a bottom working layer 101, a bottom safety layer 102, a cavity 103, and a wall. The permanent layer 104 is uniformly arranged along the inner wall of the cavity 103. The bottom safety layer 102 is uniformly laid on the upper end of the permanent layer. The bottom working layer 101 is uniformly arranged on the upper end of the bottom safety layer 102. The wall is arranged on the upper end of the bottom working layer 101, and the wall is uniformly laid along the inner side of the permanent layer.

[0020] In this embodiment, the bottom working layer 101 and the bottom safety layer 102 constitute a two-layer structure, changing the original single bottom layer to a two-layer bottom layer, which enhances safety. During use, if the bottom working layer 101 is corroded or breaks due to prolonged use, the bottom safety layer 102 will be exposed, thus serving as a warning. The degree of corrosion of the bottom working layer 101 can be identified by visual observation, and the depth of corrosion of the bottom working layer 101 can be quickly identified, improving judgment efficiency while reducing detection complexity.

[0021] Furthermore, the height of the middle position of the bottom working layer 101 is higher than the height of the peripheral position, thus the middle position of the bottom working layer 101 is a protruding structure.

[0022] In this embodiment, during use, the central raised structure of the ladle bottom working layer 101 helps reduce the amount of molten steel residue and enhances its corrosion resistance. The central part of the ladle bottom working layer 101 can withstand the impact of molten steel, which can enhance the durability of the ladle bottom working layer 101. Furthermore, the raised central part can prevent the formation of pits, which is beneficial for extending the service life of the ladle and ensuring the quality of molten steel. It also facilitates the flow of molten steel, allowing it to flow out more smoothly and improving steelmaking efficiency.

[0023] Furthermore, the bottom safety layer 102 is composed of multiple sets of 300mm*150mm*30mm magnesium-carbon bricks laid evenly.

[0024] In this embodiment, the use of magnesia-carbon bricks can extend the service life and increase the number of uses of the ladle, improve its oxidation resistance and slag resistance, enhance its corrosion resistance, improve safety, and reduce its permanent thermal changes and high-temperature linear expansion rate.

[0025] Further, the permanent layer includes a bottom permanent layer 104, a wall permanent layer 105, and a slag line permanent layer 106. The bottom permanent layer 104 is disposed inside the cavity 103 and is evenly distributed at the bottom of the cavity 103. The wall permanent layer 105 is disposed inside the cavity 103 and is evenly distributed at the top of the bottom permanent layer 104. The slag line permanent layer 106 is disposed inside the cavity 103 and is evenly distributed at the top of the wall permanent layer 105.

[0026] In this embodiment, the permanent layer 104 at the bottom of the ladle, the permanent layer 105 on the wall of the ladle, and the permanent layer 106 on the slag line serve as the last barrier for the safe operation of the ladle. They can prevent molten steel leakage and maintain the safe operation of the ladle. They also have the function of heat insulation and support, which can improve service life, withstand the erosion of high-temperature molten steel, and reduce energy consumption.

[0027] Furthermore, the wall covering includes a wall covering working layer 107 and a slag line working layer 108. The wall covering working layer 107 is fixedly connected to the permanent wall covering layer 105 and is evenly laid on the inner side of the permanent wall covering layer 105. The slag line working layer 108 is fixedly connected to the permanent slag line layer 106 and is evenly laid on the inner side of the permanent slag line layer 106.

[0028] In this embodiment, the ladle wall working layer 107 is in direct contact with the molten steel, containing the molten steel and withstanding the mechanical scouring and high-temperature chemical corrosion of the molten steel. The slag line working layer 108 is in contact with the slag. At the same time, the stepped structure between the slag line working layer 108 and the ladle wall working layer 107 can avoid the risk of the ladle wall working layer 107 falling off under high temperature and mechanical scouring, enhance the bonding ability between the ladle wall working layer 107 and the slag line working layer 108, reduce the formation of circumferential gaps, reduce the risk of abnormal ladle removal, and enable the ladle to be used normally.

[0029] Furthermore, the upper end of the slag line working layer 108 has an inclined edge 109.

[0030] In this embodiment, the 109 structure along the ladle reduces slag adhesion and steel penetration accidents, and improves the overall performance of all working layers of the ladle.

[0031] Furthermore, the steel ladle bottom safety layer masonry structure also includes a wedge-shaped ring 110, which is fixedly connected to the ladle cavity 103 and located inside the ladle cavity 103. The wedge-shaped ring 110 and the slag line working layer 108 form a clear area 111.

[0032] In this embodiment, the wedge-shaped ring 110 can improve the fluidity of molten steel, allowing it to flow out of the ladle more smoothly and reducing stress concentration at the ladle opening. The clear area 111 can control the molten steel level, preventing ladle overflow or safety accidents during transportation, thus improving production efficiency and safety. It also plays an important role in guiding the converter charging quantity, reducing excess steel, and stabilizing the converter output.

[0033] The above-disclosed embodiments are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of the present utility model. Those skilled in the art can understand that implementing all or part of the above-described embodiments and making equivalent changes in accordance with the claims of the present utility model are still within the scope of the utility model.

Claims

1. A masonry structure for the bottom safety layer of a steel ladle, characterized in that, It includes a permanent layer, a bottom working layer, a bottom safety layer, a cavity, and a wall. The permanent layer is uniformly disposed along the inner wall of the cavity. The bottom safety layer is uniformly laid on the upper end of the permanent layer. The bottom working layer is uniformly disposed on the upper end of the bottom safety layer. The wall is disposed on the upper end of the bottom working layer and is uniformly laid along the inner side of the permanent layer.

2. The steel ladle bottom safety layer masonry structure as described in claim 1, characterized in that, The height of the middle part of the bottom working layer is higher than the height of the surrounding parts, thus the middle part of the bottom working layer is a raised structure.

3. The steel ladle bottom safety layer masonry structure as described in claim 1, characterized in that, The bottom safety layer is composed of multiple sets of 300mm*150mm*30mm magnesia-carbon bricks laid evenly.

4. The steel ladle bottom safety layer masonry structure as described in claim 1, characterized in that, The permanent layer includes a bottom permanent layer, a wall permanent layer, and a slag line permanent layer. The bottom permanent layer is disposed inside the cavity and is evenly laid at the bottom of the cavity. The wall permanent layer is disposed inside the cavity and is evenly laid at the top of the bottom permanent layer. The slag line permanent layer is disposed inside the cavity and is evenly laid at the top of the wall permanent layer.

5. The steel ladle bottom safety layer masonry structure as described in claim 4, characterized in that, The wall covering includes a wall covering working layer and a slag line working layer. The wall covering working layer is fixedly connected to the permanent wall covering layer and is evenly laid on the inner side of the permanent wall covering layer. The slag line working layer is fixedly connected to the permanent slag line layer and is evenly laid on the inner side of the permanent slag line layer.

6. The steel ladle bottom safety layer masonry structure as described in claim 5, characterized in that, The upper end of the working layer of the slag line has an inclined edge.

7. The steel ladle bottom safety layer masonry structure as described in claim 6, characterized in that, The ladle bottom safety layer masonry structure also includes a wedge-shaped ring, which is fixedly connected to the ladle cavity and located inside the ladle cavity. The wedge-shaped ring and the slag line working layer form a clear space area.

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