CN218836072U

CN218836072U - Ladle bottom structure

Info

Publication number: CN218836072U
Application number: CN202223352500.0U
Authority: CN
Inventors: 陈煜�
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-12-13
Filing date: 2022-12-13
Publication date: 2023-04-11
Anticipated expiration: 2032-12-13

Abstract

The utility model discloses a ladle package bottom structure belongs to ladle structure technical field. The structure comprises a ladle bottom permanent area, a ladle bottom working area, a ladle bottom impact area, a nozzle brick, an air brick, a ladle wall connecting brick, a base platform, a hydraulic support and a fixed support, wherein the ladle bottom permanent area is arranged at the bottom of a ladle, the ladle bottom working area is arranged at the upper part of the ladle bottom permanent area, and the ladle bottom impact area is embedded in the ladle bottom working area; one surface of the ladle bottom working area, which is far away from the ladle bottom permanent area, is in a slope shape; the bottom of the ladle is arranged on the bottom platform, and a hydraulic support and a fixed support are arranged between the ladle bottom and the bottom platform. When molten steel is poured into the ladle bottom structure, one side of the ladle bottom is supported by the hydraulic support, so that the inner part of the ladle bottom is horizontal, the impact of the molten steel on a nozzle brick is reduced, and when the molten steel is discharged, the hydraulic support is retracted, so that the molten steel flows out from a nozzle of the ladle as much as possible, the ladle pouring residue is reduced, and the yield of the molten steel is improved.

Description

Ladle bottom structure

Technical Field

The utility model belongs to the technical field of the ladle structure, in particular to ladle package bottom structure.

Background

The variety steel is widely used for parts with high performance requirements, and has high requirements on product quality. The steel of the smelting variety in domestic steel mills is usually produced by adopting the process flow of primary smelting → refining. After refining is finished, a layer of ladle slag derived from primary smelting furnace steel slag, slagging materials and deoxidation products covers the upper part of the molten steel in the ladle, and the ladle slag can influence the cleanliness of the molten steel in the ladle.

In production practice, in order to improve the above problems, a common process operation is to leave a certain weight of molten steel in a ladle (i.e. steel-leaving operation), to keep ladle slag at a certain height, to avoid slag entrapment by the molten steel, and to leave molten steel with poor cleanliness near the slag-steel interface in the ladle, but this operation will produce a certain amount of steel-leaving of the ladle (ladle casting), thereby reducing the metal yield of the molten steel and causing an increase in production cost.

In addition, in the prior art, the related technical means for solving the problem of steel retention of the steel ladle is that an inclination angle is arranged at the bottom of the steel ladle, but when molten steel is poured into the steel ladle, the low point of the bottom of the steel ladle bears the huge impact of the molten steel, so that the service life of the steel ladle is greatly shortened. Therefore, a new ladle design is needed to prolong the service life of the ladle while solving the problem of steel retention of the ladle.

SUMMERY OF THE UTILITY MODEL

The utility model provides a ladle package bottom structure can let the outflow from the ladle mouth of a river of molten steel as much as possible when staying the steel operation, and less ladle is watered and is left over, improve molten steel yield, simultaneously, when the molten steel pours, can reduce the impact of molten steel to departments such as nozzle brick, extension ladle life.

In order to solve the technical problem, the utility model provides a following technical scheme:

the ladle structure comprises a ladle bottom permanent area, a ladle bottom working area, a ladle bottom impact area, a nozzle brick, an air brick, a ladle wall connecting brick, a base platform, a hydraulic support and a fixed support,

the ladle bottom permanent area is arranged at the bottom of the ladle, the ladle bottom working area is arranged at the upper part of the ladle bottom permanent area, and the ladle bottom impact area is embedded in the ladle bottom working area;

one surface of the ladle bottom working area, which is far away from the ladle bottom permanent area, is in a slope shape, and the upper surface of the ladle bottom impact area and the upper surface of the nozzle brick are positioned on the same slope with the ladle bottom working area;

the bottom of the ladle is arranged on the bottom platform, the hydraulic support and the fixed support are arranged between the ladle bottom and the bottom platform, the hydraulic support is arranged on the outer side of the bottom of the nozzle brick, and the fixed support and the hydraulic support are symmetrically arranged in the center of the ladle bottom.

The ladle wall connecting brick is connected with the ladle bottom working area.

The oblique angle of the slope of the surface of the ladle bottom working area is 6-10 degrees.

When the hydraulic support is supported, the slope of the surface of the ladle bottom working area is ensured to be horizontal.

The ladle bottom working area is at least one of masonry of casting materials and masonry of bricks.

Compared with the prior art, the utility model discloses technical scheme's beneficial effect is:

in the scheme, the surface of the ladle bottom working area is in a slope shape and is positioned on the same slope with the upper surface of the air brick, the upper surface of the ladle bottom impact area and the upper surface of the nozzle brick, so that slag is not rolled up during steel retaining process operation, the residual molten steel amount of the ladle can be greatly reduced on the premise of not reducing the service life of the ladle, the residual molten steel amount of the ladle is reduced by about 40 percent (calculated according to the volume) compared with that of a horizontal ladle bottom, and the metal yield of the molten steel is improved. Meanwhile, due to the design of the hydraulic support, when molten steel is poured, the slope is horizontal by supporting the hydraulic support, the impact of the molten steel on a water outlet and the like is reduced, and the service life of the steel ladle is prolonged.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a top view of a ladle bottom structure of the utility model;

FIG. 2 isbase:Sub>A schematic sectional view taken along line A-A in FIG. 1.

Wherein: 1-ladle bottom working area, 2-nozzle brick, 3-ladle bottom permanent area, 4-ladle bottom impact area, 5-air brick, 6-ladle wall connecting brick, 7-base platform, 8-hydraulic support and 9-fixed support.

Detailed Description

In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following detailed description will be given with reference to the accompanying drawings and specific embodiments.

The utility model provides a ladle package bottom structure.

As shown in fig. 1 and 2, the ladle bottom structure comprises a ladle bottom permanent region 3, a ladle bottom working region 1, a ladle bottom impact region 4, a nozzle brick 2, an air brick 5, a ladle wall connecting brick 6, a base platform 7, a hydraulic support 8 and a fixed support 9,

the ladle bottom permanent area 3 is arranged at the bottom of the ladle, the ladle bottom working area 1 is arranged at the upper part of the ladle bottom permanent area 3, and the ladle bottom impact area 4 is embedded in the ladle bottom working area 1;

one side of the ladle bottom working area 1, which is far away from the ladle bottom permanent area 3, is in a slope shape, and the upper surface of the ladle bottom impact area 4 and the upper surface of the nozzle brick 2 are positioned on the same slope with the ladle bottom working area 1;

the bottom of the ladle is arranged on the bottom platform 7, a hydraulic support 8 and a fixed support 9 are arranged between the ladle bottom and the bottom platform 7, the hydraulic support 8 is arranged on the outer side of the bottom of the nozzle brick 2, and the fixed support 9 and the hydraulic support 8 are symmetrically arranged in the center of the ladle bottom and are positioned outside the air brick 5.

Wherein, the ladle wall connecting brick 6 is connected with the ladle bottom working area.

The oblique angle of the slope of the surface of the ladle bottom working area 1 is 6-10 degrees.

When the hydraulic support 8 is supported, the surface slope of the ladle bottom working area 1 is ensured to be horizontal.

In the specific design, the base platform is designed to be circular, the diameter of the base platform is slightly larger than that of the ladle, the hydraulic support 8 and the fixed support 9 are arranged on the base platform along the diameter direction, the hydraulic support 8 is connected to the outer side of a nozzle brick at the bottom of the ladle to ensure that molten steel flows out smoothly, and the fixed support is positioned on the outer side of a connecting line of the two air bricks to ensure that the air bricks are not blocked.

The ladle bottom working area 1 and the ladle bottom impact area 4 are designed on the same inclined plane, so that steps between the ladle bottom impact area 4 and the ladle bottom working area 1 can be avoided, molten steel at the bottom of a steel ladle is prevented from scouring refractory materials, and the service life of the steel ladle can be prolonged.

The inclined angle B of the surface slope of the ladle bottom working area 1 is 7 degrees.

When molten steel is contained, the hydraulic support 8 is jacked up to enable the slope of the surface of the ladle bottom working area to be horizontal, the molten steel is poured in, after the molten steel is contained, the hydraulic support 8 is put down, the slope of the surface of the ladle bottom working area returns to an inclined state, and the molten steel is waited to be discharged.

The technical scheme of this application is fit for being applied to and stays the steel operation, and the reason is that 1 regional except that nozzle brick 2 is located the lower position in the ladle bottom workspace of this application, and other regions are in same inclined plane, occupy great area, can reduce the ladle bottom and water surplus molten steel, reduce simultaneously or avoid molten steel vortex intensity, and then reach the purpose that reduces the ladle and remain the molten steel volume.

The foregoing is a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.

Claims

1. A ladle bottom structure is characterized by comprising a ladle bottom permanent area, a ladle bottom working area, a ladle bottom impact area, a nozzle brick, a gas permeable brick, a ladle wall connecting brick, a base platform, a hydraulic support and a fixed support,

the ladle bottom permanent region is arranged at the bottom of the ladle, the ladle bottom working region is arranged at the upper part of the ladle bottom permanent region, and the ladle bottom impact region is embedded in the ladle bottom working region;

2. The ladle bottom structure according to claim 1, wherein the wall-engaging bricks connect the bottom working area.

3. The ladle bottom structure according to claim 1, wherein the slope of the ladle bottom working area surface has an angle of inclination of 6 to 10 °.

4. The ladle bottom structure of claim 1, wherein the hydraulic support ensures that the slope of the surface of the ladle bottom working area is horizontal when being supported.