Ladle brick and building method thereof
By designing the ladle bricks with an integrated structure of the outer and inner bricks, using specific materials and masonry methods, the ladle risk problem caused by brick joints is solved, the stability and visual inspection of the ladle are achieved, the leakage risk is reduced and process control is optimized.
Patent Information
- Application Number
- CN202510723077.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-30
- Publication Date
- 2025-08-01
AI Technical Summary
Existing ladle bricks are prone to form brick joints during the masonry process, resulting in liquid metal channels, increasing the risk of furnace and bag penetration. The existing testing equipment is not very practical and cannot effectively guide the operation of the ladle.
A steel brick with an integrated structure of outer and inner bricks is designed. One end of the outer brick body protrudes toward the outside of the inner brick body to form a protrusion. The inner and outer brick body is isosceles trapezoidal, and the brick joints are closed circuits through the folding angle structure. Specific materials and masonry methods are used to ensure that the width of the brick joint is ≤1mm and avoid the position of the brick joint in the high-temperature area.
It realizes closed-circuit sealing of brick joints, reduces the risk of water leakage, improves the operation stability of ladles, and provides visual inspection marks to facilitate process control.
Smart Images
Figure CN120394843A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of iron and steel metallurgy, and particularly relates to a ladle brick and a method for laying the same. Background Art
[0002] In the iron and steel metallurgy industry, ladles usually use prefabricated refractory ladle bricks. In the prior art, ladle bricks are usually trapezoidal in structure. During the laying process of ladle bricks, brick joints will be generated, and these brick joints also form liquid molten metal channels. If there are factors such as laying fluctuations, it will pose potential safety production accident hazards such as furnace penetration and ladle penetration.
[0003] The furnace penetration area of the ladle is usually in the argon stirring area near the lower part of the electrode. Since this area is a high-temperature area, the molten steel disturbance here is relatively large, and the fluidity of the molten steel is good, which aggravates the furnace penetration risk, and it is necessary to optimize the laying method.
[0004] The operating state of the ladle is usually judged by the ladle service life and the experience of the staff. Currently, the infrared detection equipment used in some iron and steel plants in the industry is affected by different actual operating states of the ladle (such as ladle service life, smelting variety, continuous casting or the first furnace, etc.), and its practicability is not strong. It has no good tracing guidance, and the maintenance cost is high, and it cannot achieve the effect of tracing and guiding the operation of the staff. Summary of the Invention
[0005] The purpose of the present invention is to provide a ladle brick and a method for laying the same. Using this ladle brick to lay a ladle can make the brick joints form a closed circuit, reduce the possibility of molten steel seeping out from the brick joints, improve the operating stability of the ladle, and reduce the use risk.
[0006] In order to achieve the above purpose, the present invention provides the following technical solutions:
[0007] A ladle brick includes an outer brick body and an inner brick body. Among them, the inner end of the outer brick body is connected to the outer end of the inner brick body; one end of the outer brick body protrudes outward from one end of the inner brick body to form a convex platform, and the other end of the outer brick body and the outer end of the inner brick body enclose a notch; the shape of the convex platform is adapted to the shape of the notch.
[0008] Further, in the above ladle brick, the outer brick body and the inner brick body are of an integral structure. The cross-section of the outer brick body is an isosceles trapezoid, and the width of the outer end of the outer brick body is greater than the width of the inner end; the cross-section of the inner brick body is an isosceles trapezoid, and the width of the outer end of the inner brick body is greater than the width of the inner end; the plane where one end of the outer brick body is located is parallel to the plane where one end of the inner brick body is located; the plane where the other end of the outer brick body is located is parallel to the plane where the other end of the inner brick body is located.
[0009] Further, in the above ladle brick, the width W1 of the outer end of the outer brick body is 160 mm.
[0010] Further, in the above ladle brick, the distance L1 between the outer end and the inner end of the outer brick body is 80 mm.
[0011] Further, in the above ladle brick, the width W2 of the inner end of the inner brick body is 150 mm.
[0012] Further, in the above ladle brick, the distance L2 between the outer end and the inner end of the inner brick body is 120 mm.
[0013] Further, in the above ladle brick, the width of the inner end of the outer brick body is the same as the width of the outer end of the inner brick body; one end of the outer brick body protrudes 20 mm outward from one end of the inner brick body.
[0014] On the other hand, a method for laying ladle bricks is provided. Using the above ladle bricks, the method includes the following steps:
[0015] Step 1, producing ladle bricks, using a press to produce ladle bricks;
[0016] Step 2, laying and installing. The ladle bricks are laid one by one. During the laying process, a rubber hammer is used to hammer the brick joints between two adjacent ladle bricks tightly. When the ladle bricks are laid to the closing position, two ladle bricks are used as closing bricks, and a cutting device is used to cut the two closing bricks along the radial direction of the ladle, and the two cut closing bricks are used for closing.
[0017] Further, in the above laying method, in the said Step 1, the materials for producing ladle bricks are fused large-grained magnesite with a MgO mass content ≥ 98%, and flake graphite with a C mass content ≥ 98%. The press for producing ladle bricks is ≥ 1250T class.
[0018] Further, in the above laying method, in the said Step 2, the width of the brick joints between two adjacent ladle bricks is ≤ 1 mm. The closing position of each layer of ladle bricks avoids the argon stirring area under the ladle electrode, and the closing positions of the upper and lower layers of ladle bricks are not on the same vertical line.
[0019] Analysis shows that the present invention discloses a ladle brick and a method for laying the same. Using this ladle brick to lay a ladle can make the brick joints between two adjacent ladle bricks form a closed circuit, reduce the possibility of molten steel leaking out from the brick joints, improve the operation stability of the ladle, and reduce the use risk. Workers can visually see the fold line as the judgment basis for the ladle to be taken offline, providing tracer guidance for the operation of the ladle and facilitating the process control of workers. Description of the Drawings
[0020] The accompanying drawings forming a part of this application are used to provide a further understanding of the present invention. The schematic embodiments and descriptions thereof of the present invention are used to explain the present invention and shall not constitute an improper limitation to the present invention. Among them:
[0021] Figure 1 It is a top view structural schematic diagram of an embodiment of the present invention.
[0022] Figure 2 It is another top view structural schematic diagram of an embodiment of the present invention.
[0023] Figure 3 It is a cross-sectional structural schematic diagram of a ladle made of ladle bricks according to an embodiment of the present invention.
[0024] Figure 4 It is a flowchart of a method for laying ladle bricks according to an embodiment of the present invention.
[0025] Explanation of reference numerals: 1 outer brick body; 2 inner brick body; 3 boss; 4 notch; 5 closing brick. Detailed embodiments
[0026] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments. Each example is provided by way of explanation of the present invention rather than a limitation thereof. In fact, those skilled in the art will clearly understand that modifications and variations can be made to the present invention without departing from the scope or spirit thereof. For example, features shown or described as part of one embodiment can be used in another embodiment to yield yet another embodiment. Therefore, it is desirable that the present invention encompass such modifications and variations that fall within the scope of the appended claims and their equivalents.
[0027] In the description of the present invention, the orientation or positional relationship indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention rather than requiring the present invention to be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention. The terms "connected", "connected to", and "disposed" used in the present invention should be understood in a broad sense. For example, it can be a fixed connection or a detachable connection; it can be directly connected or indirectly connected through an intermediate component; it can be a wired connection, a radio connection, or a wireless communication signal connection. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances.
[0028] One or more examples of the present invention are shown in the accompanying drawings. The detailed description uses numerical and alphabetical labels to refer to features in the drawings. Similar or like labels in the drawings and the description have been used to refer to similar or like parts of the present invention. As used herein, terms such as "first," "second," and "third" may be used interchangeably to distinguish one component from another, and are not intended to indicate the position or importance of individual components.
[0029] As Figures 1 to 4 shown, according to an embodiment of the present invention, there is provided a ladle brick, as Figure 1 shown, including an outer brick body 1 and an inner brick body 2, wherein the inner end of the outer brick body 1 is directly connected to the outer end of the inner brick body 2; one end of the outer brick body 1 protrudes outward from one end of the inner brick body 2 to form a convex platform 3, and the other end of the outer brick body 1 and the outer end of the inner brick body 2 enclose a notch 4; the shape of the convex platform 3 is adapted to the shape of the notch 4.
[0030] Furthermore, the outer brick body 1 and the inner brick body 2 are of an integral structure. The cross-section of the outer brick body 1 is an isosceles trapezoid, and the width of the outer end of the outer brick body 1 is greater than the width of the inner end; the cross-section of the inner brick body 2 is an isosceles trapezoid, and the width of the outer end of the inner brick body 2 is greater than the width of the inner end; the plane where one end of the outer brick body 1 is located is parallel to the plane where one end of the inner brick body 2 is located; the plane where the other end of the outer brick body 1 is located is parallel to the plane where the other end of the inner brick body 2 is located.
[0031] Furthermore, as Figure 2 shown, the width W1 of the outer end of the outer brick body 1 is 160 mm. The distance L1 between the outer end and the inner end of the outer brick body 1 is 80 mm. The width W2 of the inner end of the inner brick body 2 is 150 mm. The distance L2 between the outer end and the inner end of the inner brick body 2 is 120 mm. The thickness of the ladle brick is L1 + L2 = 200 mm. Such a setting can ensure that the ladle brick reaches the thickness required for the safe operation of the ladle. The width of the inner end of the outer brick body 1 is the same as the width of the outer end of the inner brick body 2; the distance L3 by which one end of the outer brick body 1 protrudes outward from one end of the inner brick body 2 is 20 mm.
[0032] In the structural design of this ladle brick, an innovative corner construction scheme is adopted. Specifically, on the basis of the existing trapezoidal ladle brick, the brick body with a thickness of 80 mm (the distance L1 between the outer end and the inner end of the outer brick body 1) on the outside of the ladle brick is offset 20 mm towards one side of the ladle brick, so that one end of the outer brick body 1 protrudes outward from one end of the inner brick body 2 to form a convex platform 3, and the other end of the outer brick body 1 and the outer end of the inner brick body 2 enclose a notch 4, thereby making the ladle brick form a corner structure, and both the convex platform 3 and the notch 4 are corner structures.
[0033] This unique design achieves the following technical advantages:
[0034] 1. Improved sealing performance: Through the angled structure, the brick joints between adjacent ladle bricks form a closed circuit, effectively blocking the penetration path of molten steel and significantly reducing the risk of molten steel leakage.
[0035] 2. Enhanced operational stability: This structural design greatly improves the overall sealing and structural integrity of the ladle, thereby enhancing the operational stability of the ladle.
[0036] 3. Visual inspection: The angled line (i.e., the visible part of the outer end face of the inner brick body 2 on the outside of the ladle) provides an intuitive inspection mark for the staff and can be used as an important criterion for judging the offline treatment of the ladle.
[0037] 4. Optimized process control: This visual design feature provides clear tracing guidance for the operation of the ladle, greatly facilitating the staff to carry out process monitoring and quality control.
[0038] Through the combination of structural innovation and visual inspection, this design scheme realizes a comprehensive improvement in the safety, stability, and maintainability of the ladle.
[0039] The present invention also discloses a method for laying ladle bricks, using the above-mentioned ladle bricks, as Figure 4 shown, including the following steps:
[0040] Step 1, produce ladle bricks. The materials for producing ladle bricks are fused large-grained magnesite with a mass content of MgO ≥ 98% and flake graphite with a mass content of C ≥ 98%. Use a press to produce ladle bricks. The press for producing ladle bricks is ≥ 1250T class, and the ladle bricks meet the standard requirements of GB / T 22589, improving the physical and chemical indexes of the ladle bricks.
[0041] Step 2, laying and installation. The ladle bricks are laid one by one. During the laying process, use a rubber hammer to hammer the brick joints between two adjacent ladle bricks tightly. When the ladle bricks are laid to the closing position, use two ladle bricks as the closing bricks 5, and use cutting equipment to cut the two closing bricks 5 along the radial direction of the ladle, and use the two cut closing bricks 5 for closing to complete the laying and installation of one layer of ladle bricks, as Figure 3 shown.
[0042] The width of the brick joint between two adjacent ladle bricks ≤ 1mm. During the laying process, use a feeler gauge to measure the brick joint between two adjacent ladle bricks to ensure that the width of the brick joint ≤ 1mm.
[0043] Since the argon stirring area near the electrode below is a high-temperature area and the molten steel has good fluidity, if the brick joints in this area are abnormal, the risk of furnace penetration will be aggravated. Therefore, during the laying and installation of ladle bricks, the closing position of each layer of ladle bricks needs to avoid the argon stirring area below the ladle electrode, and the closing positions of the upper and lower layers of ladle bricks are not on the same vertical line.
[0044] From the above description, it can be seen that the above embodiments of the present invention achieve the following technical effects:
[0045] A ladle brick and its laying method. Using this ladle brick to lay a ladle can make the brick joints between two adjacent ladle bricks form a closed circuit, reduce the possibility of molten steel seeping out from the brick joints, improve the operation stability of the ladle, and reduce the use risk. Workers can visually see the fold line as the judgment basis for the ladle bottom line treatment, provide tracing guidance for the ladle operation, and facilitate the process control of workers.
[0046] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.
Claims
1. A ladle brick, characterized in that, It includes an outer brick body and an inner brick body. Among them, the inner end of the outer brick body is connected to the outer end of the inner brick body; one end of the outer brick body protrudes outward from one end of the inner brick body to form a boss, and the other end of the outer brick body and the outer end of the inner brick body enclose a notch; the shape of the boss is adapted to the shape of the notch.
2. The ladle brick according to claim 1, characterized in that the outer brick body and the inner brick body are of an integral structure, the cross-section of the outer brick body is an isosceles trapezoid, and the width of the outer end of the outer brick body is greater than the width of the inner end; the cross-section of the inner brick body is an isosceles trapezoid, and the width of the outer end of the inner brick body is greater than the width of the inner end; the plane where one end of the outer brick body is located is parallel to the plane where one end of the inner brick body is located; the plane where the other end of the outer brick body is located is parallel to the plane where the other end of the inner brick body is located.
3. The ladle brick according to claim 1, characterized in that the width W1 of the outer end of the outer brick body is 160 mm.
4. The ladle brick according to claim 1, characterized in that the distance L1 between the outer end and the inner end of the outer brick body is 80 mm.
5. The ladle brick according to claim 1, characterized in that the width W2 of the inner end of the inner brick body is 150 mm.
6. The ladle brick according to claim 1, characterized in that the distance L2 between the outer end and the inner end of the inner brick body is 120 mm.
7. The ladle brick according to claim 1, characterized in that the width of the inner end of the outer brick body is the same as the width of the outer end of the inner brick body; one end of the outer brick body protrudes 20 mm outward from one end of the inner brick body.
8. A method for laying ladle bricks, using the ladle bricks described in any one of claims 1 to 7, characterized in that, It includes the following steps: Step 1, produce ladle bricks, and use a press to produce ladle bricks; Step 2, masonry installation, the ladle bricks are laid one by one. During the masonry process, a rubber hammer is used to hammer the brick joints between two adjacent ladle bricks tightly. When the ladle bricks are laid to the closing position, two ladle bricks are used as closing bricks, and a cutting device is used to cut the two closing bricks along the radial direction of the ladle, and the two cut closing bricks are used for closing.
9. The masonry method according to claim 8, characterized in that in the step 1, the materials for producing ladle bricks are fused large-grained magnesite with the mass content of MgO ≥ 98%, and flake graphite with the mass content of C ≥ 98%, and the press for producing ladle bricks is ≥ 1250T grade.
10. The masonry method according to claim 8, characterized in that in the step 2, the width of the brick joint between two adjacent ladle bricks ≤ 1 mm, the closing position of each layer of ladle bricks avoids the argon stirring area under the ladle electrode, and the closing positions of the upper and lower layers of ladle bricks are not on the same vertical line.