CN214115613U

CN214115613U - Compound refining furnace lid

Info

Publication number: CN214115613U
Application number: CN202023020214.5U
Authority: CN
Inventors: 蔡长秀; 周辉; 徐志华; 方震; 阳灿
Original assignee: Wuhan Iron And Steel Group Refractory Materials Co ltd
Current assignee: Wuhan Iron And Steel Group Refractory Materials Co ltd
Priority date: 2020-12-15
Filing date: 2020-12-15
Publication date: 2021-09-03
Anticipated expiration: 2030-12-15

Abstract

The utility model discloses a compound refining furnace bell, this bell include main bell and set up the auxiliary furnace lid in its top, a plurality of electrode hole has been seted up on the main bell, be provided with the tie coat between main bell and the auxiliary furnace lid. The utility model discloses a compound refining furnace bell design has main bell and assists the bell, main bell and assist and be provided with the tie coat between the bell for main bell central zone pouring material can be under high temperature with assist the effective sintering of bell, and the centre piece pouring material of having avoided the main bell appears dropping, has improved the security of bell operation.

Description

Compound refining furnace lid

Technical Field

The utility model relates to a technical field of bell, concretely relates to compound refining furnace bell.

Background

The ladle refining furnace is important equipment in steel mills and is mainly used for refining molten steel, further removing impurities in the steel and adjusting components of the molten steel. The LF furnace cover is used as an important device of a refining furnace, can shield arc light and heat in the furnace, reduces heat loss and protects furnace top equipment.

At present, the furnace cover of the LF refining furnace is generally formed by integral casting, and is cylindrical, and three larger electrode holes are reserved in the middle of the furnace cover. In the use process of the furnace cover of the LF refining furnace, the furnace cover is seriously damaged due to the influences of splashing of high-temperature slag and molten steel and sudden temperature change of electric arc in the moving process, the thinnest area in the middle of adjacent electrode holes is easy to break, the pouring material in the central area of the furnace cover falls off, the service life of the furnace cover is shortened, and the electrode can be broken seriously to cause safety accidents.

Disclosure of Invention

An object of the utility model is to overcome the not enough of above-mentioned background art, provide a compound refining furnace bell, the life of this bell improves greatly, has avoided the central zone pouring material of bell to appear dropping, has improved the security of bell operation.

In order to realize the purpose, the utility model provides a pair of compound refining furnace bell, including main bell and the supplementary bell of setting in its top, a plurality of electrode hole has been seted up on the main bell, main bell and supplementary are provided with the tie coat between the bell.

Furthermore, the auxiliary furnace cover is composed of a plurality of carbon-containing bricks, and a carbon-containing brick is arranged between every two adjacent electrode holes.

Further, each carbon-containing brick comprises a near end and a far end, the near end of each carbon-containing brick is arranged close to the central point of the main furnace cover, and the far end of each carbon-containing brick is arranged far away from the central point of the main furnace cover.

Furthermore, the proximal ends of a plurality of the carbon-containing bricks are fixed through bonding layers.

Furthermore, the number of the electrode holes is three, the auxiliary furnace cover is composed of three carbon-containing bricks, and the three carbon-containing bricks are arranged in a Y shape.

Further, the included angle between two adjacent carbon-containing bricks is 120 degrees.

Further, the main furnace cover is cylindrical.

Further, the bonding layer is formed by coating daub.

Still further, the thickness of tie coat is 1 ~ 2 mm.

Still further, the carbon-containing brick is selected from a magnesia carbon brick, an alumina-magnesia carbon brick or an aluminum silicon carbide carbon brick.

Compared with the prior art, the utility model has the advantages of as follows:

one of which, the utility model discloses a compound refining furnace bell design has main bell and assists the bell, main bell and assist and be provided with the tie coat between the bell for main bell central zone pouring material can be under high temperature with assist the effective sintering of bell, and the center block pouring material of having avoided main bell appears dropping, has improved the security of bell operation.

Secondly, the utility model discloses a compound refining furnace bell simple structure, low in production cost, life has improved more than 50% moreover, and the effect is obvious.

Drawings

FIG. 1 is a schematic view of the structure of a furnace lid of a complex finer;

FIG. 2 is an enlarged schematic view of FIG. 1 at I;

FIG. 3 is a schematic cross-sectional view taken along A-A of FIG. 1;

in the figure: the furnace comprises a main furnace cover 1, an auxiliary furnace cover 2 (comprising carbon bricks 2.1, a near end 2.11 and a far end 2.12), an electrode hole 3 and a bonding layer 4.

Detailed Description

The following detailed description will be given with reference to the embodiments, but they are not intended to limit the present invention, and are given by way of example only. While the advantages of the invention will be apparent and readily appreciated by the description.

As shown in fig. 1-3, the furnace cover of the composite refining furnace comprises a main furnace cover 1 and an auxiliary furnace cover 2 arranged above the main furnace cover, wherein a plurality of electrode holes 3 are arranged on the main furnace cover 1, and a bonding layer 4 is arranged between the main furnace cover 1 and the auxiliary furnace cover 2. The auxiliary furnace cover 2 is composed of a plurality of carbon-containing bricks 2.1, and a carbon-containing brick 2.1 is arranged between two adjacent electrode holes 3. Each carbon-containing brick 2.1 comprises a proximal end 2.11 and a distal end 2.12, the proximal end of the carbon-containing brick 2.1 is arranged near the central point of the main furnace cover 1, and the distal end 2.12 of the carbon-containing brick 2.1 is arranged far away from the central point of the main furnace cover 1. The proximal ends 2.11 of the carbon-containing bricks 2.1 are fixed by the bonding layers 4.

In the embodiment, the main furnace cover 1 is cylindrical, the radius is 620mm, and the height is 240 mm; the number of the electrode holes 3 is three, the radius of the electrode holes is 210mm, and the electrode holes are through holes penetrating through the main furnace cover; the auxiliary furnace cover 2 consists of three carbon-containing bricks 2.1, the three carbon-containing bricks 2.1 are arranged in a Y shape, the length of the carbon-containing brick 2.1 is 610mm, and the radius of the carbon-containing brick is similar to that of the main furnace cover 1. The included angle between two adjacent carbon-containing bricks 2.1 is 120 degrees. The bonding layer 4 is formed by coating cement and is used for fixing the main furnace cover and the auxiliary furnace cover, and sintering between the main furnace cover 1 and the auxiliary furnace cover 2 can be promoted at high temperature, so that pouring materials at the center of the main furnace cover can be firmly adhered to the auxiliary furnace cover, and the main furnace cover is prevented from falling. Preferably, the cement of the bonding layer 4 is chrome corundum cement, the thickness of the bonding layer 4 is 1-2 mm, and the carbon-containing brick 2.1 is selected from magnesia carbon brick, alumina-magnesia carbon brick or aluminum silicon carbide carbon brick.

The utility model discloses a compound refining furnace bell in the use, the center pouring material of main bell 1 can pass through the tie coat and assist the effective sintering of bell for main bell center pouring material can firm adhesion on assisting the bell, and bell life is improved 780 times by 520 times, and through the observation to the off-line bell, the firm adhesion of main bell center pouring material is on assisting the bell.

While the present invention has been described with reference to the preferred embodiments, it should be understood that various changes and modifications can be made by one skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. The utility model provides a compound refining furnace bell which characterized in that: the electrode structure comprises a main furnace cover (1) and an auxiliary furnace cover (2) arranged above the main furnace cover, wherein a plurality of electrode holes (3) are formed in the main furnace cover (1), and a bonding layer (4) is arranged between the main furnace cover (1) and the auxiliary furnace cover (2).

2. The compound finer cover of claim 1, wherein: the auxiliary furnace cover (2) is composed of a plurality of carbon-containing bricks (2.1), and one carbon-containing brick (2.1) is arranged between every two adjacent electrode holes (3).

3. The compound finer cover of claim 2, wherein: each carbon-containing brick (2.1) comprises a near end (2.11) and a far end (2.12), the near end of the carbon-containing brick (2.1) is arranged close to the central point of the main furnace cover (1), and the far end (2.12) of the carbon-containing brick (2.1) is arranged far away from the central point of the main furnace cover (1).

4. The compound finer cover of claim 3, wherein: the near ends (2.11) of the carbon-containing bricks (2.1) are fixed by bonding layers (4).

5. The composite refining furnace cover according to any one of claims 2 to 4, characterized in that: the number of the electrode holes (3) is three, the auxiliary furnace cover (2) is composed of three carbon-containing bricks (2.1), and the three carbon-containing bricks (2.1) are arranged in a Y shape.

6. The compound finer cover of claim 5, wherein: the included angle between two adjacent carbon-containing bricks (2.1) is 120 degrees.

7. The composite refining furnace cover according to any one of claims 1 to 4, characterized in that: the main furnace cover (1) is cylindrical.

8. The composite refining furnace cover according to any one of claims 1 to 4, characterized in that: the bonding layer (4) is formed by coating daub.

9. The composite refining furnace cover according to any one of claims 1 to 4, characterized in that: the thickness of the bonding layer (4) is 1-2 mm.

10. The composite refining furnace cover according to any one of claims 2 to 4, characterized in that: the carbon-containing brick (2.1) is selected from a magnesia carbon brick, an alumina-magnesia carbon brick or an aluminum silicon carbide carbon brick.