Furnace lining group of working layer of arc transition area of molten pool at converter bottom and masonry structure

Abstract

The utility model discloses a molten pool arc transition area working layer furnace lining group and a masonry structure of a converter bottom, the molten pool arc transition area working layer furnace lining group comprises a plurality of molten pool arc transition area working layer furnace linings, and the sizes of working surfaces of the plurality of molten pool arc transition area working layer furnace linings are the same. And the sizes of non-working surfaces of the working layer furnace linings of the arc transition areas of the molten pool are the same. The size of the furnace lining of the working layer of the arc transition area of the molten pool is set to be consistent, manufacturing and production are easy, increase of mold opening is avoided, production efficiency is improved, and production cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of metallurgical furnaces, and more specifically, to a working layer lining group and a masonry structure of a molten pool arc transition area at the bottom of a converter. Background Art

[0002] The bottom of a converter mainly includes two types: a flat-return turning bottom and a progressive flat-turning bottom. The progressive flat-turning bottom is composed of a bottom area, a bottom arc transition area, and a molten pool arc transition area. The bottom area, the bottom arc transition area, and the molten pool arc transition area are all provided with a lower permanent layer lining and an upper working layer lining, namely, a bottom area permanent layer lining, a bottom area working layer lining, a bottom arc transition area permanent layer lining, a bottom arc transition area working layer lining, a molten pool arc transition area permanent layer lining, and a working layer lining group of the molten pool arc transition area (multiple working layer linings of the molten pool arc transition area). Since the masonry method of the progressive flat-turning bottom has the advantages of good integrity, being able to effectively decompose the thermal stress in the bottom and molten pool areas, and extending the service life of the converter, it is widely used.

[0003] However, for the existing multiple working layer linings of the molten pool arc transition area, whether it is the size of the working surface (top plane) or the non-working surface (bottom plane), they are all inconsistent, resulting in the need for a separate mold for each working layer lining of the molten pool arc transition area, increasing the mold opening, leading to a decrease in production efficiency and an increase in cost.

[0004] Therefore, providing a working layer lining group and a masonry structure of a molten pool arc transition area at the bottom of a converter with cost reduction and efficiency improvement is an urgent problem to be solved by those skilled in the art. Content of the Utility Model

[0005] In view of this, the utility model provides a working layer lining group and a masonry structure of a molten pool arc transition area at the bottom of a converter, which improve the production and manufacturing efficiency and reduce the cost.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0007] A working layer lining group of a molten pool arc transition area at the bottom of a converter includes multiple working layer linings of the molten pool arc transition area. The sizes of the working surfaces of the multiple working layer linings of the molten pool arc transition area are the same, and the sizes of the non-working surfaces of the multiple working layer linings of the molten pool arc transition area are the same.

[0008] By adopting the above technical scheme, the beneficial effects of the utility model are as follows:

[0009] Setting the sizes of the working layer linings of the molten pool arc transition area to be the same is easy for manufacturing and production, avoiding the increase in mold opening, improving the production efficiency, and reducing the production cost.

[0010] A masonry structure for the bottom of a converter, comprising a working layer lining and a permanent layer lining distributed vertically. The working layer lining includes a working layer lining for the bottom area, a working layer lining for the bottom arc transition area, and a plurality of working layer linings for the molten pool arc transition area as described above. The permanent layer lining includes a permanent layer lining for the bottom area, a permanent layer lining for the bottom arc transition area, and a permanent layer lining for the molten pool arc transition area. The working layer lining for the bottom arc transition area is closely laid on the permanent layer lining for the bottom arc transition area; the working layer lining for the molten pool arc transition area is closely laid on the permanent layer lining for the molten pool arc transition area; a triangular area is formed between the permanent layer lining for the bottom arc transition area, the working layer lining for the bottom arc transition area, the permanent layer lining for the molten pool arc transition area, and the working layer lining for the molten pool arc transition area. The lining of the triangular area is composed of a layer of magnesia-carbon bricks laid along the permanent layer lining for the bottom arc transition area, or the lining of the triangular area is composed of a layer of magnesia bricks laid along the permanent layer lining for the molten pool arc transition area and a layer of magnesia-carbon bricks laid along the working layer lining for the molten pool arc transition area.

[0011] By adopting the above technical solutions, the beneficial effects of the present utility model are as follows:

[0012] The structure is compact, reducing the area of the triangular area, thereby reducing the amount of ramming material filled in the triangular area and reducing the sinking of the working layer lining.

[0013] Furthermore, the permanent layer lining for the bottom area, the permanent layer lining for the bottom arc transition area, and the permanent layer lining for the molten pool arc transition area are all made of magnesia bricks; the working layer lining for the bottom area, the working layer lining for the bottom arc transition area, and the working layer lining for the molten pool arc transition area are all made of magnesia-carbon bricks.

[0014] Furthermore, the working layer thickness of the working layer lining for the molten pool arc transition area is greater than the working layer thickness of the working layer lining for the bottom area. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on the provided drawings.

[0016] Figure 1 The drawing is a schematic structural diagram of a masonry structure for the bottom of a converter provided by the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0018] As Figure 1 shown, the embodiments of the present utility model disclose a working layer lining group in the molten pool arc transition area of a converter bottom, which includes a plurality of working layer linings 1 in the molten pool arc transition area. The working surface sizes of the plurality of working layer linings 1 in the molten pool arc transition area are the same, and the non-working surface sizes of the plurality of working layer linings 1 in the molten pool arc transition area are the same. The present utility model sets the sizes of the working layer linings 1 in the molten pool arc transition area to be consistent, which is easy to manufacture and produce, avoids increasing mold opening, improves production efficiency, and reduces production costs.

[0019] The embodiments of the present utility model also disclose a masonry structure of a converter bottom, which includes a working layer lining and a permanent layer lining distributed up and down. The working layer lining includes a working layer lining 2 in the bottom area of the furnace, a working layer lining 3 in the bottom arc transition area of the furnace, and a plurality of working layer linings 1 in the molten pool arc transition area as described above. The permanent layer lining includes a permanent layer lining 4 in the bottom area of the furnace, a permanent layer lining 5 in the bottom arc transition area of the furnace, and a permanent layer lining 6 in the molten pool arc transition area. The working layer lining 3 in the bottom arc transition area of the furnace is closely laid on the permanent layer lining 5 in the bottom arc transition area of the furnace; the working layer lining 1 in the molten pool arc transition area is closely laid on the permanent layer lining 6 in the molten pool arc transition area; a triangular area 7 is formed between the permanent layer lining 5 in the bottom arc transition area of the furnace, the working layer lining 3 in the bottom arc transition area of the furnace, the permanent layer lining 6 in the molten pool arc transition area, and the working layer lining 1 in the molten pool arc transition area. The lining in the triangular area 7 is composed of a magnesia-carbon brick layer laid along the permanent layer lining 5 in the bottom arc transition area of the furnace, or the lining in the triangular area 7 is composed of a magnesia brick layer laid along the permanent layer lining 6 in the molten pool arc transition area and a magnesia-carbon brick layer laid along the working layer lining 1 in the molten pool arc transition area. The structure of the present utility model is compact, reduces the area of the triangular area 7, thereby reducing the amount of ramming material filled in the triangular area 7 and reducing the sinking of the working layer lining.

[0020] Specifically, the permanent layer lining 4 in the bottom area of the furnace, the permanent layer lining 5 in the bottom arc transition area of the furnace, and the permanent layer lining 6 in the molten pool arc transition area are all made of magnesia bricks; the working layer lining 2 in the bottom area of the furnace, the working layer lining 3 in the bottom arc transition area of the furnace, and the working layer lining 1 in the molten pool arc transition area are all made of magnesia-carbon bricks.

[0021] Specifically, the working layer thickness of the working layer lining 1 in the molten pool arc transition zone is greater than that of the working layer lining 2 in the furnace bottom zone. In this embodiment, the permanent layer lining 4 in the furnace bottom zone is built in 2 layers with a total thickness of 130 mm, the working layer lining 2 in the furnace bottom zone is built in 1 - 9 rings with a working layer thickness of 670 mm; the permanent layer lining 5 in the furnace bottom arc transition zone is built in 2 layers with a total thickness of 130 mm, the working layer lining 3 in the furnace bottom arc transition zone is built in 10 rings with a working layer of 670 mm; the permanent layer lining 6 in the molten pool arc transition zone is built in 2 - 4 layers with a total thickness of 130 - 260 mm, and the working layer lining 1 in the molten pool arc transition zone is built in 11 - 16 rings with a working layer thickness of 693 mm.

[0022] The various embodiments in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments. For the same or similar parts among the various embodiments, reference can be made to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple. For the relevant parts, reference can be made to the description in the method part.

[0023] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be obvious to those skilled in the art. The general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A molten pool arc transition zone working layer lining group of a converter furnace bottom, comprising a plurality of molten pool arc transition zone working layer linings, characterized in that: The working surface sizes of the multiple working layer linings of the molten pool circular arc transition zone are the same, and the non-working surface sizes of the multiple working layer linings of the molten pool circular arc transition zone are the same.

2. A masonry structure for a converter bottom, characterized in that: It comprises a working layer lining and a permanent layer lining distributed up and down, the working layer lining comprises a furnace bottom area working layer lining, a furnace bottom arc transition area working layer lining and a plurality of molten pool arc transition area working layer linings distributed in sequence, the permanent layer lining comprises a furnace bottom area permanent layer lining, a furnace bottom arc transition area permanent layer lining and a molten pool arc transition area permanent layer lining distributed in sequence, the furnace bottom arc transition area working layer lining is tightly built on the furnace bottom arc transition area permanent layer lining; the molten pool ... The lining of the triangular area is composed of a magnesia carbon brick layer laid along the permanent layer lining of the furnace bottom arc transition area, or a magnesia carbon brick layer laid along the permanent layer lining of the molten pool arc transition area and a magnesia carbon brick layer laid along the working layer lining of the molten pool arc transition area.

3. The masonry structure of a converter bottom according to claim 2, characterized in that: The permanent layer lining of the furnace bottom area, the permanent layer lining of the furnace bottom arc transition area and the permanent layer lining of the molten pool arc transition area are all built with magnesia bricks; the working layer lining of the furnace bottom area, the working layer lining of the furnace bottom arc transition area and the working layer lining of the molten pool arc transition area are all built with magnesia-carbon bricks.

4. A masonry structure for a converter bottom according to claim 2 or 3, characterized in that: The working layer thickness of the working layer lining in the arc transition zone of the molten pool is greater than the working layer thickness of the working layer lining in the furnace bottom zone.

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