Masonry steel ladle containing refractory material

Abstract

The utility model provides a masonry steel ladle containing refractory materials, which relates to the technical field of steel smelting and processing equipment and comprises a ladle shell, an inner container, a thermal insulation layer, a masonry layer and a working layer. The inner container layer is arranged in the cladding shell, the cladding shell and the inner container layer are both made of metal materials, a heat preservation gap is formed between the outer wall of the inner container and the inner wall of the cladding shell, and the heat preservation gap is filled with the heat preservation layer; the masonry layer comprises a brick masonry upper layer and a masonry edge opening layer, and the working layer is located on the inner wall of the masonry layer. The steel ladle has the advantages that the thermal insulation material is sealed in the thermal insulation gap through the inner container and the ladle shell of the steel ladle to form the thermal insulation layer, so that the mechanical strength requirement of the thermal insulation material can be lowered, the selection range of the thermal insulation material is expanded, the selection flexibility of the thermal insulation layer is improved, and meanwhile the inner wall of the inner container can provide high-strength support for the masonry layer; the effects of integrally improving the structural strength and prolonging the service life of the steel ladle are achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to steel smelting processing equipment technical field, concretely is a kind of masonry ladle containing refractory material. BACKGROUND

[0002] Ladle is indispensable container in steelmaking process.Ladle usually includes ladle shell of steel material, insulation layer and working layer, wherein the role of insulation layer is to prevent the deformation of ladle shell shell, reduce the heat loss of molten steel, prevent the problem of molten steel temperature reduction, and the molten steel temperature is too low, not only affect the quality of billet, but also affect the yield of molten steel, so the heat preservation effect of insulation layer is very important to the quality of ladle.Masonry layer is usually built by refractory bricks, and working layer is formed by pouring refractory material, which directly contacts with molten steel and steel slag, and bears the mechanical scouring and high-temperature chemical corrosion of molten steel and steel slag.The role of masonry layer is to prevent the leakage of molten steel through ladle shell when the working layer refractory material is locally eroded or eroded to very thin.

[0003] At present, the insulation layer and masonry layer of masonry ladle are all double-layer masonry structures, that is, the insulation layer is built by block-shaped insulation bricks, and the masonry layer is built by refractory bricks.There are many types of insulation materials, and the strength of many insulation bricks made of insulation materials is limited, which is difficult to meet the strength requirements of the insulation layer of masonry ladle, so the selection of insulation layer materials is limited, and the double-layer masonry structure of insulation layer and masonry layer is difficult to withstand the mechanical scouring and high-temperature chemical corrosion of molten steel and steel slag for a long time, so its service life is relatively low. CONTENT OF UTILITY MODEL

[0004] Therefore, the flexibility of the selection of the insulation layer is improved, the heat preservation effect of the ladle is improved, and the structural strength and service life of the ladle are improved, and the utility model provides a masonry ladle containing refractory material, which is characterized by comprising a ladle shell, an inner container, an insulation layer, a masonry layer and a working layer.

[0005] The side wall of the ladle shell is provided with a lug ring and two oppositely arranged trunnions, the inner container layer is arranged in the ladle shell, the ladle shell and the inner container layer are both metal materials, an insulation gap is formed between the outer wall of the inner container and the inner wall of the ladle shell, and the insulation layer is filled in the insulation gap; the upper edge height of the inner container is lower than the upper edge height of the ladle shell,

[0006] The masonry layer comprises a masonry upper layer built by refractory bricks and a masonry lip layer, the masonry lower layer is arranged on the inner wall of the inner container layer, and the masonry lip layer is built on the upper part of the inner wall of the ladle shell.

[0007] The working layer is located on the inner wall of the masonry layer.

[0008] Further, the trunnion comprises an integral connecting plate and trunnion rod, the connecting plate is welded to the outer wall of the shell, and the trunnion end is connected to the connecting plate, and a limiting groove is further arranged on each trunnion rod.

[0009] Further, the trunnion rod axis is perpendicular to the shell axis.

[0010] Further, the connecting plate is connected to the side surface of the trunnion, and the connecting plate is an arc surface.

[0011] Further, the outer wall of the shell is further provided with a reinforcing hoop, and the reinforcing hoop is welded to the outer wall of the shell.

[0012] Further, the reinforcing hoop is provided with two avoiding holes, and the two trunnions pass through the two avoiding holes, and the avoiding hole edge is pressed against the connecting plate.

[0013] Further, a transition connecting layer is further poured in the working layer, and the transition connecting layer transitions the bottom of the side wall of the working layer.

[0014] Further, the upper end of the shell is further provided with a V-shaped liquid outlet nozzle.

[0015] Further, the inner container top is further provided with a fixed welding ring, the outer ring of the fixed welding ring is welded to the inner wall of the shell, and the inner ring of the fixed welding ring is welded to the inner container top.

[0016] The beneficial effects of the masonry ladle containing refractory material are as follows: the ladle shell, the inner container, the heat preservation layer, the masonry layer and the working layer; the shell and the inner container layer are both metal materials, the heat preservation gap is formed between the outer wall of the inner container and the inner wall of the shell, and the heat preservation layer is filled in the heat preservation gap; the working layer is located in the inner wall of the masonry layer, the outer wall of the inner container and the shell of high-strength metal material enclose the heat preservation material in the heat preservation gap to form the heat preservation layer, so that the mechanical strength requirement of the heat preservation material can be reduced, the selection range of the heat preservation material is expanded, the flexibility of the heat preservation layer selection is improved, meanwhile, the inner wall of the inner container can provide high-strength support for the masonry layer, and the overall structure strength and service life of the ladle are improved. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a whole structure schematic view of the masonry ladle containing refractory material according to an embodiment of the utility model.

[0018] Figure 2 is Figure 1 the sectional view of A-A in FIG.

[0019] Figure 3 is Figure 2 the enlarged view of B in FIG.

[0020] Figure 4 is Figure 2 Fig. 4 is a top view of the connecting plate 31 and the trunnion rod 3.

[0021] In the above figures: 1 - shell, 11 - liquid outlet nozzle, 12 - hanging ear ring, 2 - reinforcing hoop, 3 - trunnion rod, 31 - connecting plate, 4 - thermal insulation layer, 5 - inner container, 6 - fixed welding ring, 7 - masonry layer, 8 - working layer, 81 - transition connecting layer. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical scheme and advantages of the utility model clearer, the utility model embodiments will be further described below with reference to the drawings.

[0023] Please refer to Figures 1 to 4 The utility model relates to a masonry ladle containing refractory material, which comprises a shell 1, an inner container 5, a thermal insulation layer 4, a masonry layer 7 and a working layer 8.

[0024] The shell 1 is a circular truncated cone barrel structure with an open upper end and a slightly narrower lower end, and the side wall is provided with an annular hanging ear ring 12 and two oppositely arranged trunnions. In this embodiment, the trunnion comprises an integrally formed connecting plate 31 and a trunnion rod 3. The connecting plate 31 is welded to the outer wall of the shell 1, and each trunnion rod 3 is further provided with a limiting groove. The end of the trunnion is connected to the connecting plate 31, and the axis of the trunnion rod 3 is perpendicular to the axis of the shell 1. The side of the connecting plate 31 away from the trunnion is a connecting surface, which is an arc surface and is tightly welded to the outer wall of the shell 1. The hanging ear ring 12 is located below the two trunnions, and the trunnion rod 3 is used for the moving lifting ring of the lifting device to be hooked on the two trunnions so as to lift and move the ladle. The hanging ear ring 12 is used for the hook of the lifting device to hook the lower end of the ladle, so that the ladle is tilted and the molten steel in the ladle is poured out.

[0025] The inner container 5 is arranged in the shell 1, and the shell 1 and the inner container 5 are both made of metal. In this embodiment, the shell 1 and the inner container 5 are both made of steel. A thermal insulation gap is formed between the outer wall of the inner container 5 and the inner wall of the shell 1, and the thermal insulation layer 4 is filled in the thermal insulation gap to form. The inner container 3 is further provided with a fixed welding ring 6, the outer circle of which is welded to the inner wall of the shell 1, and the inner side of the fixed welding ring 6 is welded to the top of the inner container 5. The shell 1 and the inner container 5 enclose the thermal insulation material in the gap therebetween, and the thermal insulation material does not require a large pressure. The thermal insulation material can be selected from a variety of types, such as pouring material, granular material and powder material. The upper edge of the inner container 5 is lower than the upper edge of the shell 1.

[0026] The masonry layer 7 is made of refractory bricks, and the masonry layer 7 comprises a masonry lower layer on the lower side of the inner container and a masonry coping layer on the upper side of the inner container, wherein the masonry lower layer is masonry on the inner wall of the inner container 5, and the masonry coping layer is masonry on the upper part of the inner wall of the package shell 1, and the upper and lower parts of the masonry layer 7 are supported by the inner wall of the package shell 1 and the inner wall of the inner container 5 respectively, and the structural strength is high. The working layer 8 is made of refractory material pouring material (refractory castable) and is poured on the inner wall of the masonry layer 7. The working layer 8 is also provided with a transition connecting layer 81, and the transition connecting layer 81 is also made of refractory castable and is poured. The transition connecting layer 81 connects the bottom of the side wall of the working layer, and prevents the molten steel from remaining on the edge of the bottom of the working layer 8.

[0027] Preferably, the upper end of the package shell is also provided with a V-shaped liquid outlet nozzle 11, which is used to guide the molten steel when the molten steel is poured out, and the inner wall of the liquid outlet nozzle 11 comprises the masonry coping layer and the working layer 7.

[0028] Preferably, the outer wall of the package shell 1 is also provided with a reinforcing hoop 2, and the reinforcing hoop 2 is welded to the outer wall of the package shell 1. Specifically, the reinforcing hoop 2 is made of two half-ring reinforcing half hoops which are welded together. The reinforcing hoop 2 is provided with two avoiding holes, and the trunnions pass through the two avoiding holes, and the edge of the avoiding hole is pressed against the connecting plate 31. The reinforcing hoop 2 is used to improve the connection strength of the trunnions on the outer wall of the package shell 1 and improve the molten steel carrying capacity of the ladle.

[0029] The manufacturing process and working process of the masonry ladle containing refractory material are as follows:

[0030] When the ladle is manufactured, the package shell 1 and the inner container 5 are integrally cast. The heat preservation material is poured or filled at the bottom of the package shell 1, the inner container 5 is positioned and fixed in the package shell 1, and the heat preservation layer 4 is formed by continuously pouring or filling the heat preservation material in the gap between the inner wall of the package shell 1 and the outer wall of the inner container 5. Then, the fixing ring is welded and fixed on the upper end of the inner container 5 to close and fix the heat preservation layer 4. The refractory bricks are masonry on the inner wall of the inner container 5 and the upper part of the inner wall of the inner container 5 to form the masonry layer 7. The refractory castable is poured on the inner wall of the masonry layer 7 to form the working layer 8, and the refractory castable is continuously poured on the edge of the bottom of the working layer 8 to form the transition connecting layer 81. The trunnion ring 12 and the trunnion are welded on the outer wall of the package shell 1, and the two half-ring reinforcing half hoops are welded on the outer wall of the package shell 1 to form the reinforcing hoop with a complete ring structure, and the edge of the avoiding hole of the reinforcing hoop is pressed against the connecting plate 31 of the trunnion.

[0031] When the ladle works, the molten steel is in the ladle, and the liquid level of the molten steel is higher than the height of the inner container 5. The moving lifting ring of the lifting device moves the whole ladle to a specified position through the trunnion. The moving lifting ring remains stationary, and the lifting device lifts the lower part of the ladle through the lifting hook hooked on the trunnion ring 12, so that the molten steel in the ladle is poured out from the liquid outlet nozzle when the ladle is inclined, thereby completing the transfer and pouring of the molten steel.

[0032] The inner shell 5 of high strength metal material is arranged in the ladle shell of the masonry ladle, the gap between the outer wall of the inner shell 5 and the ladle shell is closed by the heat preservation material, the mechanical strength requirement of the heat preservation material is reduced, the selection range of the heat preservation material is expanded, the flexibility of the selection of the heat preservation layer 4 is improved, meanwhile, the inner wall of the inner shell 5 can provide high strength support for the masonry layer 7, and the overall structure strength and service life of the ladle are improved.

[0033] In this article, the front, back, up, down and other orientation words are defined according to the position of the parts in the drawing and the position of the parts relative to each other in the drawing, just to express the technical scheme clearly and conveniently. It should be understood that the use of the orientation words should not limit the scope of the application.

[0034] In the case of no conflict, the above-mentioned embodiments and features in the embodiments can be combined with each other.

[0035] The above is only the preferred embodiment of the utility model, and does not limit the utility model, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A steel ladle containing refractory material, characterized in that: This includes the outer shell, inner liner, insulation layer, masonry layer, and working layer; The outer shell has ear loops and two oppositely arranged trunnions on its sidewalls. The inner liner is disposed inside the outer shell. Both the outer shell and the inner liner are made of metal. An insulation gap is formed between the outer wall of the inner liner and the inner wall of the outer shell, and the insulation layer fills the insulation gap. The upper edge of the inner liner is lower than the upper edge of the outer shell. The masonry layer includes an upper masonry layer and a masonry edge layer constructed of refractory bricks. The lower masonry layer is located on the inner wall of the inner liner layer, the masonry edge layer is constructed on the upper part of the inner wall of the shell, and the working layer is located on the inner wall of the masonry layer.

2. The refractory-containing masonry steel ladle according to claim 1, characterized in that: The trunnion includes an integrally formed connecting plate and a trunnion rod. The connecting plate is welded to the outer wall of the casing, and the end of the trunnion is connected to the connecting plate. Each trunnion rod is also provided with a limiting groove.

3. A refractory-containing masonry steel ladle according to claim 2, characterized in that: The axis of the trunnion rod passes perpendicularly through the axis of the casing.

4. A refractory-containing masonry steel ladle according to claim 3, characterized in that: The side of the connecting plate away from the trunnion is the connecting surface, which is an arc-shaped surface, and the connecting surface is welded tightly to the outer wall of the shell.

5. A refractory-containing masonry steel ladle according to claim 4, characterized in that: The outer wall of the casing is also provided with a reinforcing hoop, which is welded to the outer wall of the casing.

6. A refractory-containing masonry steel ladle according to claim 5, characterized in that: The reinforcing hoop is provided with two clearance holes, the two trunnions pass through the two clearance holes, and the edges of the clearance holes press against the connecting plate.

7. A refractory-containing masonry steel ladle according to claim 4, characterized in that: A transition connection layer is also cast within the working layer, which transitions and connects to the bottom of the sidewall of the working layer.

8. A refractory-containing masonry steel ladle according to claim 1, characterized in that: The upper end of the casing is also provided with a V-shaped liquid outlet nozzle.

9. A refractory-containing masonry steel ladle according to claim 1, characterized in that: The top of the inner liner is also provided with a fixing welding ring. The outer ring of the fixing welding ring is welded to the inner wall of the shell, and the inner edge of the fixing welding ring is welded to the top of the inner liner.

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