Steel ladle and ladle mouth slag line brick

Abstract

The utility model relates to the technical field of metallurgical equipment, and discloses a steel ladle and a ladle mouth slag line brick, the steel ladle comprises a ladle shell, a lining and a pressing plate; the lining comprises inner wall slag line bricks which are attached to the inner wall of the ladle shell and piled up and ladle mouth slag line bricks piled up on the inner wall slag line bricks, and the multiple ladle mouth slag line bricks are sequentially arranged in the circumferential direction of the axis of the ladle shell. The surface, facing the axis, of each ladle opening slag line brick forms a working face, the side, deviating from the working face, of each ladle opening slag line brick forms a slope face, a top face and a bottom face which are opposite are formed in the extending direction of the axis, the bottom faces make contact with the inner wall slag line bricks, and the side edges, facing the bottom faces, of the slope faces protrude out of the side edges, facing the top faces, of the slope faces. A V-shaped groove is formed between the slope surface and the inner wall of the cladding; the multiple pressing plates are arranged in the V-shaped groove and distributed in the circumferential direction of the axis at intervals, and the pressing plates are supported between the inner wall of the ladle shell and the slope face so as to press the ladle opening slag line bricks. The steel ladle can reduce the risk that the ladle opening slag line brick is damaged due to thermal expansion, the brick body is prevented from falling off, and the service life of the steel ladle is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of metallurgical equipment, in particular to a ladle and a ladle mouth slag line brick. Background Art

[0002] The quality of ladle masonry has a great influence on the service life of the ladle, especially the quality of the ladle mouth. The order of ladle refractory masonry is from bottom to top: ladle bottom working layer masonry → molten pool masonry → slag line masonry → ladle mouth masonry. The function of ladle mouth masonry is: 1. Figure 1 As shown, a new pressing plate 03 is used at the mouth of the bag. Multiple pressing plates 03 are provided, and the pressing plates 03 are distributed at intervals around the axial line of the mouth of the bag; the mouth material is stirred evenly and the mouth of the bag is filled, and the pressing plate must not be exposed; 3. After the masonry is completed, the residues and bricks in the bag are cleaned up. Among them, the welding of the pressing plate must be firm. If the welding of the pressing plate is not firm or only presses one point, the pressing plate needs to be re-welded. If the height of the pressing plate that leaks out when filling the mouth of the bag does not exceed the edge of the bag, it should be appropriately supplemented with the mouth material to cover the pressing plate. If it exceeds the edge of the bag, the size of the pressing plate should be adjusted and re-welded.

[0003] like Figure 1 As shown, in the existing ladle, multiple layers of slag bricks are arranged from bottom to top in the cladding 01, wherein the slag bricks in the uppermost layer can be the slag bricks 022 at the ladle opening, and the pressure plate 03 is on the topmost slag bricks 022 at the ladle opening, and the pressure plate is pressed on the top surface above the slag bricks 022 at the ladle opening. The stress of the pressure plate 03 pressing on the slag bricks 022 at the ladle opening will be relatively large, and the top surface of the slag bricks 022 at the ladle opening is easily expanded and damaged after being heated. At the ladle opening, the existing pressure plate 03 is plate-shaped, standing vertically on the slag bricks 022 at the ladle opening, and the pressing surface of the pressure plate 03 is relatively narrow. When the pressure plate 03 presses the slag bricks at the ladle opening, it uses a relatively narrow thin surface to press the slag bricks 022 at the ladle opening, and the area of ​​the side in contact with the slag bricks 022 at the ladle opening is relatively small (such as Figure 1 As shown in the figure, the stress of the part where the slag line brick 022 is pressed is relatively concentrated. When the slag line brick 022 at the ladle opening expands due to heat, the part not pressed by the pressing plate 03 is easy to expand and deform, and the part pressed by the pressing plate 03 is easy to be indented. In severe cases, the slag line brick 022 at the ladle opening pressed by the pressing plate 03 will also break. During the use of the ladle, once the slag line layer expands upward due to heat or the slag line brick at the ladle opening is broken by impact, the slag line brick at the ladle opening is easy to fall off. Once the slag line brick at the ladle opening falls off, the ladle must be offline in advance.

[0004] Therefore, how to solve the problem that the slag line bricks at the ladle mouth are easily damaged by fracturing or even falling during the use of ladle steel is an urgent problem to be solved. Only by solving this problem can the life of the ladle be significantly improved. During the use of ladle steel, the stability of the ladle mouth without bricks falling is of great significance to improving the life of the ladle. Utility Model Content

[0005] The utility model aims to provide a ladle and a ladle opening slag line brick, wherein the ladle can reduce the risk of the ladle opening slag line brick being damaged due to thermal expansion, avoid the ladle opening slag line brick falling, and effectively extend the service life of the ladle.

[0006] In order to achieve the above object, the utility model provides the following technical solutions:

[0007] A ladle, characterized by comprising:

[0008] A shell, wherein the shell has a containing space therein and the top of the shell is open;

[0009] The lining is arranged in the cladding and is attached to the inner wall of the cladding; the lining comprises: inner wall slag line bricks attached to the inner wall of the cladding and cladding opening slag line bricks stacked on the inner wall slag line bricks, the cladding opening slag line bricks are located on the side of the inner wall slag line bricks facing the opening, and a plurality of the cladding opening slag line bricks are sequentially arranged and stacked in the circumferential direction of the axis of the cladding;

[0010] Wherein, the surface of each of the slag line bricks at the cladding opening facing the axis line of the cladding shell forms a working surface, and a slope surface is formed on the side of the slag line brick at the cladding opening away from the working surface. The slag line brick at the cladding opening forms a relative top surface and bottom surface along the extension direction of the axis line of the cladding shell, the bottom surface faces the inner wall slag line brick and contacts the inner wall slag line brick, the slope surface faces the inner wall of the cladding shell, the side edge of the slope surface facing the bottom surface protrudes from the side edge of the slope surface facing the top surface, and a "V"-shaped groove with a "V"-shaped cross section is formed between the slope surface and the inner wall of the cladding shell;

[0011] A plurality of pressure plates are arranged in the "V"-shaped groove and are distributed at circumferential intervals around the axis of the cladding, each of the pressure plates is supported between the inner wall of the cladding and the slope surface, the pressure plate is fixedly connected to the inner wall of the cladding, and the surface of the pressure plate facing the slope surface forms a supporting slope that abuts against the slope surface.

[0012] In the above-mentioned ladle, the slag line bricks at the top layer in the ladle shell are set as special-shaped bricks, the slag line bricks at the ladle shell are stacked in the ladle shell, and the top of the slag line bricks at the ladle shell is provided with a slope facing the corner of the inner wall of the ladle shell, the slope surface faces the inner wall, and the top surface of the slag line bricks at the ladle shell is inclined downward, and a "V"-shaped "V"-shaped groove is formed between the slope surface and the inner wall of the ladle shell, and the pressing plate is arranged in the "V"-shaped groove, and the side of the pressing plate facing the slag line bricks at the ladle shell has a supporting inclined surface that cooperates with the inclined surface, so that the supporting inclined surface and the inclined surface are abutted and pressed, so that the pressing plate presses the slag line bricks at the ladle shell; the pressing plate is pressed on the slag line bricks at the ladle shell The part of the brick is the slope surface of the slag line brick at the cladding opening, not the top surface of the slag line brick at the cladding opening, so the stress will only be applied on the slope surface of the slag line brick at the cladding opening. Therefore, when the slag line brick at the cladding opening expands due to heat, the top surface of the slag line brick at the cladding opening is not pressed by the pressure plate, and there is no problem of stress concentration and severe expansion due to heat on the top of the slag line brick at the cladding opening. In addition, the compressive stress of the slag line brick on the cladding edge by the pressure iron is on the slope surface, and part of the stress will be distributed in the horizontal direction, and the compressive stress will not be applied on the top surface of the slag line brick at the cladding opening, which greatly reduces the risk of excessive local stress or even damage or breakage on the top surface of the slag line brick at the cladding opening when the slag line brick at the cladding opening expands due to heat.

[0013] Therefore, in the above-mentioned ladle, the ladle opening can reduce the risk of damage to the slag line bricks at the ladle opening due to thermal expansion, avoid the slag line bricks at the ladle opening from falling, and effectively extend the service life of the ladle.

[0014] Optionally, the slag line brick at the cladding opening is a wedge-shaped brick, a section is formed on the side facing the tip of the wedge-shaped brick, the section constitutes the working surface, the slope surface is formed on the side of the wedge-shaped brick away from its tip, the wedge-shaped brick has two opposite wedge-shaped slopes, each of the wedge-shaped slopes is connected between the working surface and the slope surface, and the two wedge-shaped slopes are arranged in a circumferential direction around the axis of the cladding; the wedge-shaped brick has two opposite and parallel end surfaces in the extension direction of the axis of the cladding, the end surfaces are perpendicular to the axis of the cladding, and the two end surfaces constitute the top surface and the bottom surface.

[0015] Optionally, the working surface is perpendicular to the bottom surface, the side of the slope surface facing the bottom surface is connected to a transition support surface, the transition support surface is parallel to the working surface, and the transition support surface is connected to the bottom surface.

[0016] Optionally, the included angle between the slope surface and the working surface and the opening toward the bottom surface is 18° to 22°.

[0017] Optionally, along a direction perpendicular to the working surface, the length of the top surface is 75% to 85% of the length of the bottom surface.

[0018] Optionally, the ratio of the number of the pressing plates to the number of the slag line bricks is greater than or equal to 2 / 3 and less than or equal to 1.

[0019] Optionally, the plurality of pressure plates are evenly distributed around the circumference of the axial center line of the cladding.

[0020] Optionally, the pressure plate is a right-angled trapezoidal plate having a relative upper base and a lower base, the length of the lower base being greater than the length of the upper base, a vertical waist and an inclined waist being respectively connected between the two ends of the upper base and the lower base, the vertical waist being perpendicular to the upper base, the surface corresponding to the inclined waist forming the supporting inclined surface, and the upper base of the right-angled trapezoidal plate facing the bottom of the "V"-shaped groove.

[0021] Optionally, the ladle further includes a ladle material that fills the “V”-shaped groove and covers a portion of the top surface of the pressure plate and the ladle slag line brick.

[0022] The present solution also provides a ladle slag brick, which is applied to any one of the ladles provided by the above technical solution, and the ladle slag brick comprises: a slag brick body; the outer side of the slag brick body has a working surface, a first side surface, a slope surface, and a second side surface distributed in a circumferential direction around an axis of the slag brick body and connected in sequence, and a bottom surface and a top surface arranged and relatively arranged along the extension direction of the axis; the axis is arranged in parallel with the axis centerline of the cladding, the first side surface and the second side surface are respectively located on two opposite sides of the ladle slag brick, and the working surface and the slope surface are respectively located on two opposite sides of the ladle slag brick; the bottom surface is used to contact with the inner wall slag brick, the first side surface and the second side surface are used to be distributed and arranged in the circumferential direction of the axis centerline of the cladding, the working surface is used to face the accommodating space of the cladding, the slope surface is used to face the inner wall of the cladding, and the side edge of the slope surface facing the bottom surface protrudes from the side edge of the slope surface facing the top surface, so that a "V"-shaped groove with a "V"-shaped cross section is formed between the slope surface and the inner wall of the cladding. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The drawings constituting part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments and descriptions of the present invention are used to explain the present invention and do not constitute an improper limitation on the present invention. Among them:

[0024] Figure 1 It is a schematic diagram of a part of the structure of a ladle near the ladle opening in the prior art;

[0025] Figure 2 A schematic diagram of the structure of a ladle provided by an embodiment of the utility model when no slag line bricks are piled up at the ladle opening;

[0026] Figure 3 A schematic cross-sectional view of a portion of the structure of a steel ladle provided in an embodiment of the utility model;

[0027] Figure 4 A schematic diagram of a portion of the structure of a ladle near the ladle opening provided in an embodiment of the utility model;

[0028] Figure 5 A schematic diagram of the structure of a slag line brick provided by an embodiment of the utility model;

[0029] Figure 6 A front view of a slag line brick provided by an embodiment of the utility model;

[0030] Figure 7 A top view of a slag line brick with a cladding surface provided in an embodiment of the utility model;

[0031] Figure 8 A schematic structural diagram of a pressing plate provided in an embodiment of the utility model.

[0032] Icons: 1- cladding; 2- lining; 3- pressure plate; 4- cladding opening material; 21- inner wall slag line brick; 22- cladding opening slag line brick; 211- supporting slope; 221- working surface; 222- slope surface; 223- top surface; 224- bottom surface; 225- transition support surface; 226- first side surface; 227- second side surface. DETAILED DESCRIPTION

[0033] 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 and does not limit the present invention. In fact, it will be clear to those skilled in the art that modifications and variations may be made in the present invention without departing from the scope or spirit of the present invention. For example, a feature shown or described as a part of one embodiment may be used in another embodiment to produce yet another embodiment. Therefore, it is desired that the present invention includes such modifications and variations within the scope of the appended claims and their equivalents.

[0034] In the description of the present invention, the terms "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and do not require that the present invention must be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention. The terms "connected", "connected" and "set" used in the present invention should be understood in a broad sense. For example, they can be fixedly connected or detachably connected; they can be directly connected or indirectly connected through an intermediate component. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0035] refer to Figure 2 , Figure 3 and Figure 4 As shown, an embodiment of the utility model provides a ladle, wherein, for the convenience of description, the installation position of the finished form of the ladle is described in this application, and the direction from the bottom of the ladle to the top mouth of the ladle is vertically upward. The ladle of the present embodiment specifically comprises: a cladding 1, an inner liner 2 and a plurality of pressing plates 3; wherein the cladding 1 has a containing space, the top of the cladding 1 forms an opening, and the edge of the opening of the cladding 1 forms a cladding edge; the inner liner 2 is arranged in the cladding 1 and fits on the inner wall of the cladding 1; specifically, the inner liner 2 comprises: inner wall slag line bricks 21 stacked against the inner wall of the cladding 1 and cladding opening slag line bricks 22 stacked on the inner wall slag line bricks 21, the cladding opening slag line bricks 22 are located on the side of the inner wall slag line bricks 21 facing the opening, the inner wall slag line bricks 21 are stacked up layer by layer on the inner wall of the cladding 1, multiple layers of inner wall slag line bricks 21 are stacked in the middle of the inner wall of the cladding 1, and a layer of cladding opening slag line bricks 22 is stacked on the inner wall slag line bricks 21 near the opening, and multiple cladding opening slag line bricks 22 are stacked in sequence in the circumferential direction of the axis of the cladding 1; wherein, Figure 5 and Figure 6As shown, the surface of each slag line brick 22 at the cladding opening facing the axis of the cladding 1 forms a working surface 221, and a slope surface 222 is formed on the side of the slag line brick 22 at the cladding opening away from the working surface 221. The slag line brick 22 at the cladding opening has opposite top surfaces 223 and bottom surfaces 224 at opposite sides in the extension direction of the axis of the cladding 1, respectively, and the bottom surface 224 faces the inner wall slag line brick 21 and contacts the inner wall slag line brick 21, and the slope surface 222 faces the inner wall of the cladding 1, and the slope surface 222 faces the bottom surface 22 The side edge of 4 protrudes from the side edge of the slope surface 222 toward the top surface 223, and a "V"-shaped groove with a "V"-shaped cross section is formed between the slope surface 222 and the inner wall of the cladding 1; multiple pressing plates 3 are arranged in the "V"-shaped groove and are distributed at intervals around the circumference of the axis of the cladding 1. Preferably, multiple pressing plates 3 can be evenly distributed around the circumference of the axis of the cladding 1, each pressing plate 3 is supported between the inner wall of the cladding 1 and the slope surface 222, and the pressing plate 3 is fixedly connected to the inner wall of the cladding 1, wherein the pressing plate 3 can be an iron plate The pressing plate 3 is welded and fixed to the cladding 1, and the surface of the pressing plate 3 facing the slope surface 222 forms a supporting inclined surface 211 that abuts against the slope surface 222. Specifically, in the manufacturing process of the ladle of the utility model, after the inner wall slag line bricks 21 are stacked, when the ladle mouth is laid, a gap is first reserved on the top layer of the inner wall slag line bricks 21, and then the pressing plate 3 is welded, and a gap space is reserved between the supporting inclined surface 211 of the pressing plate 3 and the surface of the top layer of the inner wall slag line bricks 21. After the pressing plate 3 is completely welded and fixed, the slag line brick 22 at the bag opening is filled between the inner wall slag line brick 21 and the pressing plate 3, so that the slag line brick 22 at the bag opening is clamped in the interval, so that the pressing plate 3 presses the slag line brick 22 at the bag opening. After the pressing plate 3 and the slag line brick 22 at the bag opening are pressed tightly, the "V"-shaped groove is filled with the bag opening material 4, and the bag opening material 4 will cover the pressing plate 3 and part of the top surface 223 of the bag opening slag line brick 22. The bag opening material 4 and the pressing plate 3 cooperate to completely press the slag line brick 22 at the bag opening, thereby improving the pressing effect.

[0036] In the above-mentioned ladle, the slag line bricks 22 at the top layer in the cladding 1 are set as special-shaped bricks, and the slag line bricks 22 at the cladding are stacked in the cladding 1. A slope is set at the corner of the top of the slag line bricks 22 at the cladding toward the inner wall of the cladding 1, and the slope surface 222 faces the inner wall. The top surface 223 of the slag line bricks 22 at the cladding is inclined downward, and a "V"-shaped "V"-shaped groove is formed between the slope surface 222 and the inner wall of the cladding 1, and the pressing plate 3 is set in the "V"-shaped groove. The side of the pressing plate 3 facing the slag line bricks 22 at the cladding is provided with a supporting inclined surface 211 and the inclined surface 222, so that the supporting inclined surface 211 and the inclined surface 222 are abutted and pressed, so that the pressing plate 3 presses the slag line bricks 22 at the cladding; the pressing plate 3 is pressed on the slag line bricks 22 at the cladding The part of the slag line brick 22 is the slope surface 222 of the slag line brick 22 at the cladding opening, rather than the top surface 223 of the slag line brick 22 at the cladding opening, so that the stress will only be applied on the slope surface 222 of the slag line brick 22 at the cladding opening. Therefore, when the slag line brick 22 at the cladding opening expands due to heat, the top surface 223 of the slag line brick 22 at the cladding opening is not pressed by the pressing plate 3, and there is no problem of stress concentration and severe expansion due to heat on the top of the slag line brick 22 at the cladding opening. In addition, the compressive stress of the pressure iron on the slag line brick on the cladding edge is on the slope surface 222, and part of the stress will be distributed in the horizontal direction, and the compressive stress will not be applied on the top surface 223 of the slag line brick 22 at the cladding opening, which greatly reduces the risk of excessive local stress or even damage or breakage on the top surface 223 of the slag line brick 22 at the cladding opening when the slag line brick 22 at the cladding opening expands due to heat.

[0037] Therefore, the above-mentioned ladle can reduce the risk of damage of the slag line bricks at the ladle mouth due to thermal expansion, avoid the slag line bricks at the ladle mouth from falling, and effectively extend the service life of the ladle.

[0038] In one possible implementation, reference Figure 5 and Figure 6 As shown, the slag line brick 22 for the cladding opening is configured as a wedge-shaped brick, the tip of the wedge-shaped brick is cut off, so that the side facing the tip of the wedge-shaped brick forms a section, and the section constitutes a working surface 221. The side of the wedge-shaped brick away from its tip is formed with a slope surface 222. The wedge-shaped brick has two opposite wedge-shaped slopes, each of which is connected between the working surface 221 and the slope surface 222. The two wedge-shaped slopes are arranged in the circumferential direction of the axis of the cladding 1. The two wedge-shaped slopes form two side surfaces of the slag line brick 22 for the cladding opening, which are a first side surface 226 and a second side surface 227. The slag line bricks for the cladding opening stacked on the same layer are connected to each other. Among the line bricks 22, the wedge-shaped inclined surfaces of two adjacent slag line bricks 22 are in contact with each other. In the circumferential direction of the axis of the cladding 1 and along a circumferential direction, the first side surface 226 of the previous slag line brick 22 and the second side surface 227 of the next slag line brick 22 are in contact with each other, so that the slag line bricks 22 stacked in this circle are stacked tightly and reliably, and the splicing gap is reduced; the wedge-shaped brick has two opposite and parallel end surfaces in the extension direction of the axis of the cladding 1, the end surfaces are perpendicular to the axis of the cladding 1, and the two end surfaces constitute the top surface 223 and the bottom surface 224.

[0039] like Figure 5 and Figure 6 As shown, in order to ensure that the slag line bricks at the cladding opening can be in firm contact with the inner wall of the cladding, a working surface 221 is arranged perpendicular to the bottom surface 224, and a transition support surface 225 is connected to the side of the slope surface 222 facing the bottom surface 224. The transition support surface 225 is parallel to the working surface 221, and the transition support surface 225 is connected to the bottom surface 224. When the slag line bricks 22 at the cladding opening are stacked, the transition support surface 225 is made to abut against the inner wall of the cladding 1 as much as possible, and is in firm contact with the inner wall of the cladding 1, thereby increasing the stacking stability of the slag line bricks 22 at the cladding opening.

[0040] Based on the above ladle, refer to Figure 5 and Figure 6 As shown, the angle θ between the slope surface 222 and the working surface 221 and the opening toward the bottom surface 224 can be set to 18°~22°, and the working surface 221 is parallel to the central axis of the cladding 1, that is, the angle θ between the slope surface 222 and the central axis of the cladding 1 is set to 18°~22°. Preferably, the angle θ can be set to 19°, 20° or 21°, so that the angle θ of the slope surface 222 inclined upward relative to the slope surface 222 is small. When the pressing plate 3 is pressed against the slope surface 222, the compressive stress of the pressing plate 3 on the slag line brick 22 at the cladding opening is almost in the horizontal direction, and the compressive stress will not be applied to the top surface 223 of the upper slag line, further reducing the risk of excessive local stress or even damage to the top surface 223 of the slag line brick 22 at the cladding opening due to thermal expansion.

[0041] For further reference, Figure 6 and Figure 7 As shown, for the length setting of the top surface 223 and the bottom surface 224, along the direction perpendicular to the working surface 221, the length of the top surface 223 is 75% to 85% of the length of the bottom surface 224. Preferably, the length of the top surface 223 can be set to 80% of the length of the bottom surface 224. The top surface 223 and the bottom surface 224 of the cladding slag line brick 22 are set to have a suitable size ratio, so that the overall shape and size ratio of the brick are more reasonable and better suitable for the cladding 1.

[0042] Among them, reference Figure 2As shown, in order to increase the compaction effect of the ladle along the pressing line, the ratio of the number of pressing plates 3 to the number of slag line bricks 22 at the ladle opening is set to be greater than or equal to 2 / 3 and less than or equal to 1, and the slag line bricks 22 at the ladle opening are provided with a sufficient number of pressing plates 3 for compaction, so that the slag line bricks 22 at the ladle opening are compacted more firmly. Preferably, the pressing plates 3 and the slag line bricks 22 at the ladle opening can be arranged one by one, so that each slag line brick 22 at the ladle opening can be compacted firmly, which can make the subsequent filling and compaction of the ladle opening material 4 better. During the use of the ladle, even if there are individual unexpected situations and the slag line bricks 22 at the ladle opening expand upward due to heat or are broken by impact, the slag line bricks 22 at the ladle opening will not fall off easily.

[0043] In one possible implementation, reference Figure 8 As shown, the pressure plate 3 is set to be a right-angled trapezoidal plate, which has a relative upper base and a lower base, the length of the lower base is greater than the length of the upper base, and a vertical waist and an inclined waist are respectively connected between the two ends of the upper base and the lower base. The vertical waist is perpendicular to the upper base, and the surface corresponding to the inclined waist forms a supporting inclined surface 211. The upper base of the right-angled trapezoidal plate faces the bottom of the "V"-shaped groove. The pressure plate 3 is set to be a right-angled trapezoidal shape with a regular shape for easy manufacturing.

[0044] Under the same inventive concept, reference Figure 3 and Figure 5 and Figure 6As shown, this embodiment also provides a ladle slag line brick, which is applied to any of the ladles in the above embodiments. Specifically, the ladle slag line brick comprises: a slag line brick body, the outer side of the slag line brick body has a working surface 221, a first side surface 226, a slope surface 222, and a second side surface 227 distributed in a circumferential direction around an axis of the slag line brick body and connected in sequence, and a bottom surface 224 and a top surface 223 arranged and relatively arranged along the extension direction of the axis; the first side surface 226 and the second side surface 227 are respectively located at the ladle slag line brick 22, the working surface 221 and the slope surface 222 are respectively located on the opposite sides of the ladle opening slag line brick 22; when the ladle opening slag line brick 22 is stacked in the ladle shell 1 of the ladle, the axis is arranged parallel to the axis line of the ladle shell 1, the ladle opening slag line brick 22 is stacked on the inner wall slag line brick 21 of the top layer, the bottom surface 224 is used to contact with the inner wall slag line brick 21, the first side surface 226 and the second side surface 227 are used to be arranged along the circumferential direction of the axis line of the ladle shell 1, the working surface 221 is used to face the accommodation space of the ladle shell 1, and the slope surface 222 is used to face the accommodating space of the ladle shell 1. 22 is used to face the inner wall of the cladding 1, and the side of the slope surface 222 facing the bottom surface 224 protrudes from the side of the slope surface 222 facing the top surface 223, so that a "V"-shaped groove with a "V"-shaped cross section is formed between the slope surface 222 and the inner wall of the cladding 1. The "V"-shaped groove can form a space for accommodating the pressing plate 3, so that the pressing plate 3 is inserted into the "V"-shaped groove, and the side of the pressing plate 3 facing the inner wall of the cladding 1 is fixed to the inner wall of the cladding 1, and the side of the pressing plate 3 facing the slag line brick 22 of the cladding opening cooperates with the slope surface 222 to press the slag line brick 22 of the cladding opening Tight, therefore, when the slag line brick 22 at the bag mouth expands due to heat, the top surface 223 of the slag line brick 22 at the bag mouth is not pressed by the pressing plate 3, and the top of the slag line brick 22 at the bag mouth does not have the problem of stress concentration and severe expansion due to heat, and the compressive stress of the slag line brick on the bag edge by the pressure iron is on the slope surface 222, and part of the stress will be distributed in the horizontal direction, and the compressive stress will not be applied to the top surface 223 of the slag line brick 22 at the bag mouth, which greatly reduces the risk of excessive local stress or even damage or breakage on the top surface 223 of the slag line brick 22 at the bag mouth when the slag line brick 22 at the bag mouth expands due to heat.

[0045] In a specific embodiment, the specific shape and size of the slag line brick 22 are described below with a specific size structure:

[0046] like Figure 5 , Figure 6 and Figure 7As shown, for the slag line brick 22 with a cladding opening, the top surface 223 and the bottom surface 224 are opposite and arranged in parallel, the working surface 221 is connected between the side edges of the top surface 223 and the bottom surface 224 on the same side, the working surface 221 is perpendicular to the top surface 223, and a slope surface 222 is arranged on the side of the slag line brick 22 with a cladding opening opposite to the working surface 221, the top side of the slope surface 222 is connected to the top surface 223, the side edge of the bottom side of the slope surface 222 is connected to a transition support surface 225, the transition support surface 225 is connected between the slope surface 222 and the bottom surface 224, the first side surface 226 and the second side surface 227 are respectively on the other two opposite sides of the top surface 223 and the bottom surface 224, and the first side surface 226 and the second side surface 227 are both perpendicular to the bottom surface 224; wherein, in the vertical direction (in the direction perpendicular to the bottom surface 224), the height H1 of the slag line brick 22 is set to be 180 mm, in the direction perpendicular to the working surface 221, the length L1 of the top surface 223 is set to be 175 mm, and the length L2 of the bottom surface 224 is set to be 220 mm; the angle θ between the slope surface 222 and the working surface 221 is set to be 20°, and the height H2 of the transition support surface 225 is set to be 50 mm; Figure 7 As shown, in the horizontal direction, the width B1 of the side of the top surface 223 (or the bottom surface 224) on the side of the working surface 221 is set to 90 mm, and the width B2 of the side of the bottom surface 224 opposite to the working surface 221 is set to 100 mm.

[0047] In addition, if Figure 3 and Figure 8 As shown, for a pressing plate 3 matched with the slag line brick 22 at the cladding opening, the pressing plate 3 is set as a right-angled trapezoidal plate, and the upper base length a1 of the right-angled trapezoid of the pressing plate 3 is set to be 120 mm, the lower base length a2 is set to be 145 mm, the height h is set to be 85 mm, and the thickness b of the pressing plate 3 is set to be 10 mm. When the pressing plate 3 is fixed into the cladding 1, the upper base of the trapezoid of the cladding 1 faces downward, so that the vertical waist of the trapezoid is connected to the inner wall of the cladding 1, and the inclined waist of the trapezoid faces the inside of the cladding 1.

[0048] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A ladle, characterized in that: include: A shell, wherein the shell has a containing space therein and the top of the shell is open; The lining is arranged in the cladding and is attached to the inner wall of the cladding; the lining comprises: inner wall slag line bricks attached to the inner wall of the cladding and cladding opening slag line bricks stacked on the inner wall slag line bricks, the cladding opening slag line bricks are located on the side of the inner wall slag line bricks facing the opening, and a plurality of the cladding opening slag line bricks are sequentially arranged and stacked in the circumferential direction of the axis of the cladding; Wherein, the surface of each of the slag line bricks at the cladding opening facing the axis line of the cladding shell forms a working surface, and a slope surface is formed on the side of the slag line brick at the cladding opening away from the working surface. The slag line brick at the cladding opening forms a relative top surface and bottom surface along the extension direction of the axis line of the cladding shell, the bottom surface faces the inner wall slag line brick and contacts the inner wall slag line brick, the slope surface faces the inner wall of the cladding shell, the side edge of the slope surface facing the bottom surface protrudes from the side edge of the slope surface facing the top surface, and a "V"-shaped groove with a "V"-shaped cross section is formed between the slope surface and the inner wall of the cladding shell; A plurality of pressure plates are arranged in the "V"-shaped groove and are distributed at circumferential intervals around the axis of the cladding, each of the pressure plates is supported between the inner wall of the cladding and the slope surface, the pressure plate is fixedly connected to the inner wall of the cladding, and the surface of the pressure plate facing the slope surface forms a supporting slope that abuts against the slope surface.

2. The ladle according to claim 1, characterized in that The slag line brick at the cladding opening is a wedge-shaped brick, and a section is formed on the side facing the tip of the wedge-shaped brick, and the section constitutes the working surface. The side of the wedge-shaped brick away from its tip forms the slope surface, and the wedge-shaped brick has two opposite wedge-shaped slopes, each of which is connected between the working surface and the slope surface, and the two wedge-shaped slopes are arranged in the circumferential direction of the axis of the cladding; the wedge-shaped brick has two opposite and parallel end surfaces in the extension direction of the axis of the cladding, and the end surfaces are perpendicular to the axis of the cladding, and the two end surfaces constitute the top surface and the bottom surface.

3. The ladle according to claim 2, characterized in that The working surface is perpendicular to the bottom surface, the side of the slope surface facing the bottom surface is connected with a transition support surface, the transition support surface is parallel to the working surface, and the transition support surface is connected to the bottom surface.

4. The ladle according to claim 2 or 3, characterized in that: The included angle between the slope surface and the working surface and the opening toward the bottom surface is 18° to 22°.

5. The ladle according to claim 4, characterized in that In a direction perpendicular to the working surface, the length of the top surface is 75% to 85% of the length of the bottom surface.

6. The ladle according to claim 1, characterized in that The ratio of the number of the pressing plates to the number of the slag line bricks is greater than or equal to 2 / 3 and less than or equal to 1.

7. The ladle according to claim 1, characterized in that The plurality of pressing plates are evenly distributed around the circumference of the axial center line of the cladding.

8. The ladle according to claim 1, characterized in that The pressure plate is a right-angled trapezoidal plate, which has a relative upper base and a lower base, the length of the lower base is greater than the length of the upper base, and a vertical waist and an inclined waist are respectively connected between the two ends of the upper base and the lower base. The vertical waist is perpendicular to the upper base, and the surface corresponding to the inclined waist forms the supporting inclined surface. The upper base of the right-angled trapezoidal plate faces the bottom of the "V"-shaped groove.

9. The ladle according to claim 1, characterized in that It also includes a capping material that fills the "V"-shaped groove and covers the pressing plate and a portion of the top surface of the capping slag line brick.

10. A slag line brick, characterized in that: Applied to the ladle according to any one of claims 1 to 9, the ladle opening slag line brick comprises: a slag line brick body, the outer side of the slag line brick body has a working surface, a first side surface, a slope surface, and a second side surface distributed in a circumferential direction around an axis of the slag line brick body and connected in sequence, and a bottom surface and a top surface arranged and relatively arranged along the extension direction of the axis; the axis is arranged in parallel with the axis center line of the ladle, the first side surface and the second side surface are respectively located on two opposite sides of the ladle opening slag line brick, and the working surface and the slope surface are respectively located on two opposite sides of the ladle opening slag line brick; the bottom surface is used to contact with the inner wall slag line brick, the first side surface and the second side surface are used to be arranged in a circumferential distribution along the axis center line of the ladle, the working surface is used to face the accommodating space of the ladle, the slope surface is used to face the inner wall of the ladle, and the side edge of the slope surface facing the bottom surface protrudes from the side edge of the slope surface facing the top surface, so that a "V"-shaped groove with a "V"-shaped cross section is formed between the slope surface and the inner wall of the ladle.

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