CN218666122U

CN218666122U - Novel slag-iron separation structure for blast furnace

Info

Publication number: CN218666122U
Application number: CN202223092200.3U
Authority: CN
Inventors: 夏中海; 王平; 张国良; 陈亮; 王运练
Original assignee: Jiangsu Shagang Group Co Ltd; Zhangjiagang Hongchang Steel Plate Co Ltd
Current assignee: Jiangsu Shagang Group Co Ltd; Zhangjiagang Hongchang Steel Plate Co Ltd
Priority date: 2022-11-21
Filing date: 2022-11-21
Publication date: 2023-03-21
Anticipated expiration: 2032-11-21

Abstract

The utility model relates to a blast furnace is with novel sediment iron isolating construction, include: the tail end of the main ditch is provided with a skimmer, and the skimmer separates molten iron and molten slag; in addition, the main channel is provided with a slag outlet; the molten iron branch channel is communicated with the main channel and is used for collecting molten iron; a baffle is arranged between the main ditch and the molten iron branch ditch; a reinforcing part arranged at one side of the main ditch and the molten iron branch ditch; and the reinforcing part is preset with a dismantling part which is close to the molten iron branch channel. The utility model discloses cancelled artifical fever oxygen, when reducing intensity of labour and save time greatly, avoided burning the pollution of oxygen and bringing yellow cigarette to the environment.

Description

Novel slag-iron separation structure for blast furnace

Technical Field

The utility model relates to the technical field of metallurgical auxiliary equipment, in particular to a novel slag-iron separation structure for a blast furnace.

Background

At present, in iron-making production, a blast furnace main channel is an iron storage type main channel, and a skimmer is arranged at the tail end of the main channel, so that slag and iron are separated by the skimmer due to different densities of slag and iron flowing out of the blast furnace.

Traditional skimmer, for example the structure disclosed in chinese utility model patent (CN 201376973Y), traditional skimmer mainly includes resistant material inside lining, big floodgate, molten iron passageway, incomplete iron eye, skimmer body and steel casing, and skimmer that is equipped with incomplete iron eye has the risk of burning through from the incomplete iron hole.

After the newly cast skimmer is continuously used for months, the bottom of the large gate can be corroded due to high-temperature molten iron scouring, slag can penetrate through the bottom of the large gate and enter the molten iron branch groove if the slag is not repaired in time, molten iron is impure after being carried with slag, steelmaking smelting is influenced, slag accumulation of the molten iron groove can be caused, the flow velocity of the molten iron is influenced, the molten iron branch groove is bonded, the workload of cleaning in front of the furnace is increased, and a very large safety risk can be brought because the cleaning needs to enter the molten iron branch groove after the opening is blocked.

In addition, because 30-35 tons of molten iron are stored in the main trough and the skimmer daily, when the skimmer is repaired, the molten iron stored in the main trough and the skimmer needs to be completely discharged, and then the repairing work is carried out.

The model is 480m ³ The blast furnace residual iron placing operation space is narrow, the operation of drilling residual iron holes by using an opening machine cannot be adopted, the operation of burning the residual iron holes by using oxygen can be only carried out, the operations of burning oxygen, cleaning residual iron channels and blocking the residual iron holes all relate to high-temperature dangerous operation, the operation environment is severe, and accidents such as residual iron eye iron leakage, vehicle and track burnout caused by falling of molten iron due to untight blocking are often caused.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects of the prior art, the utility model discloses a novel slag-iron separation structure for a blast furnace.

The utility model discloses the technical scheme who adopts as follows:

a novel slag-iron separation structure for a blast furnace comprises:

the tail end of the main channel is provided with a skimmer, and the skimmer separates molten iron and molten slag; moreover, the main channel is provided with a slag outlet;

the molten iron branch ditch is communicated with the main ditch and is used for collecting the molten iron; a baffle is arranged between the main ditch and the molten iron branch ditch;

a reinforcing part disposed at one side of the main trench and the molten iron branch trench; and the reinforcing part is preset with a dismantling part which is close to the molten iron branch channel.

The method is further technically characterized in that: the length of the detaching part is 500mm +/-20 mm.

The method is further technically characterized in that: the height of the dismantling part is 260mm +/-20 mm.

The method is further technically characterized in that: the width of the removal part is the same as the width of the reinforcement part.

The method is further technically characterized in that: the skimmer is provided with a slag iron channel, and the slag iron channel comprises two vertical channels communicated through a transverse channel.

The method is further technically characterized in that: the cross-sectional shape of the transverse channel and the cross-sectional shape of the vertical channel are both polygonal.

The method is further technically characterized in that: the reinforcing part comprises a pouring layer and a foundation layer, the pouring layer is poured and formed on the foundation layer, and the foundation layer is formed by building bricks.

The method is further technically characterized in that: the reinforcing part comprises a steel plate shell, and the steel plate shell is arranged on the outer sides of the pouring layer and the foundation layer.

The method is further technically characterized in that: the height of the steel plate shell is the same as the sum of the height of the pouring layer and the height of the foundation layer.

The method is further technically characterized in that: the molten iron branch channel is provided with a tap hole.

Compared with the prior art, the technical scheme of the utility model have following advantage:

1. blast furnace novel sediment iron isolating construction realize the scheme of the incomplete iron runner of safe efficient clearance, cancel the incomplete iron hole of traditional skimmer, stopped the risk that incomplete iron hole burns.

2. The utility model discloses cancelled artifical fever oxygen completely, when reducing intensity of labour and save time greatly, avoided burning the oxygen and brought the pollution problem of yellow tobacco to the environment.

Drawings

In order to make the content of the present invention more clearly understood, the present invention will be described in further detail with reference to the following embodiments of the present invention, in conjunction with the accompanying drawings.

FIG. 1 is a schematic view of a novel slag-iron separation structure for a blast furnace of the present invention.

Fig. 2 is an enlarged schematic view of the removed portion of fig. 1.

The specification reference numbers indicate: 1. a baffle plate; 2. a taphole; 3. a slag outlet; 4. a molten iron passage; 5. a removal section; 6. pouring a layer; 7. a base layer; 8. a steel plate housing; 9. molten iron; 10. slag; 11. a main trench; 12. and (5) supporting a ditch for molten iron.

Detailed Description

The present invention is further described with reference to the following drawings and specific embodiments so that those skilled in the art can better understand the present invention and can implement the present invention, but the embodiments are not to be construed as limiting the present invention.

The foregoing and other technical matters, features and effects of the present invention will be apparent from the following detailed description of the embodiments, which is to be read in connection with the accompanying drawings. Directional terms as referred to in the following examples, for example: up, down, left, right, front or rear, etc., are simply directions with reference to the drawings. Therefore, the directional terminology used is for the purpose of description and is not intended to be limiting, and moreover, like reference numerals will be used to refer to like elements throughout.

As shown in fig. 1, a novel slag-iron separation structure for a blast furnace includes:

a skimmer is arranged at the tail end of the main channel 11 and used for separating molten iron 9 and molten slag 10; the main channel 11 is provided with a slag outlet 3;

the molten iron branch ditches 12 are communicated with the main ditch 11, and the molten iron branch ditches 12 are used for collecting molten iron 9; a baffle plate 1 is arranged between the main ditch 11 and the molten iron branch ditch 12;

a reinforcing part provided at one side of the main runner 11 and the molten iron branch runner 12; and, the reinforcing part is preset with a removing part 5, and the removing part 5 is close to the molten iron branch channel 12.

The aforesaid provides a blast furnace is with novel sediment iron isolating construction, and it is narrow and small to have solved current blast furnace and put the incomplete iron operating space, can't take the operation of opening machine drill incomplete iron hole, can only burn incomplete iron hole operation with oxygen, burns oxygen, clears up incomplete iron ditch, blocks up incomplete iron eye and all relates to high temperature dangerous operation, and the operational environment is abominable, often can lead to the fact incomplete iron eye hourglass iron because the shutoff is not tight, and the problem of accidents such as vehicle, track is burnt out to the ground to the molten iron.

In this embodiment, the molten iron passage 4 is formed at the communication position of the branch molten iron groove 12 and the main groove 11, and the molten iron passage 4 guides the molten iron 9.

As shown in FIG. 2, in the present embodiment, the length of the removal part 5 is 500 mm. + -. 20mm, the height of the removal part 5 is 260mm. + -. 20mm, and the width of the removal part 5 is the same as the width of the reinforcing part. Preferably, the length of the demolition portion 5 is 500mm and the height of the demolition portion 5 is 260mm, according to skimmers used in existing blast furnaces.

In this embodiment, the skimmer is provided with an iron slag channel comprising two vertical channels communicating via a transverse channel. Specifically, the cross-sectional shape of the lateral channel and the cross-sectional shape of the vertical channel are both polygonal. The working principle of the skimmer is as follows: the molten slag and the molten iron from the taphole float on the molten iron due to the different densities thereof. After the skimmer is filled with molten iron, the molten iron can pass through the molten iron because the molten iron branch channel 12 and the main channel 11 are communicated through the transverse channel and the vertical channel. The slag is blocked by the baffle 1 and can not flow into the molten iron branch channel 12, thereby completing the slag-iron shunting work. The slag skimmer is used for ensuring that slag and iron are separated, the slag is not excessive and does not contain slag, and the slag and iron do not overflow, so that normal and safe production is ensured.

In this embodiment, the reinforcement includes a pouring layer 6 and a foundation layer 7, the pouring layer 6 is poured and formed on the foundation layer 7, and the foundation layer 7 is formed by brick masonry. The foundation layer 7 has the advantages of better erosion resistance and corrosion resistance, and only the foundation layer 7 needs to be replaced when the foundation layer 7 is damaged, so that the maintenance time is short, and the maintenance cost is low.

In this embodiment, the reinforcement further comprises a steel plate shell 8, the steel plate shell 8 being arranged outside the casting layer 6 and the foundation layer 7. Preferably, the height of the steel plate shell 8 is the same as the sum of the height of the casting layer 6 and the height of the foundation layer 7, and the steel plate shell 8 further improves the strength of the reinforcement.

In this embodiment, the hot metal branch runner 12 is provided with the taphole 2.

The utility model discloses a theory of operation as follows:

when the corrosion of the bottom of the main trough 11 of the blast furnace or the slag skimmer is serious, molten iron in the main trough 11 and the slag skimmer needs to be completely placed for repair.

When the repair is needed, the demolition part 5 is directly excavated by an excavator, the area of the demolition part 5 is 500mm multiplied by 260mm, the molten iron is guided to the molten iron branch trench 12, placed into a ladle and pulled to steel-making smelting.

When the molten iron in the skimmer is completely discharged, the residual molten iron is blown out by compressed air, and then the main runner 11 is repaired in a large area or in a small area.

In the description of the embodiments of the present invention, it should be further noted that unless explicitly stated or limited otherwise, the terms "disposed" and "connected" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood as a specific case by those skilled in the art.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious changes and modifications can be made without departing from the scope of the invention.

Claims

1. A novel slag-iron separation structure for a blast furnace is characterized in that: the method comprises the following steps:

a main channel (11), the tail end of which is provided with a skimmer, and the skimmer separates molten iron (9) and slag (10); moreover, the main ditch (11) is provided with a slag outlet (3);

the molten iron branch ditches (12) are communicated with the main ditch (11), and the molten iron branch ditches (12) are used for collecting the molten iron (9); a baffle plate (1) is arranged between the main ditch (11) and the molten iron branch ditch (12);

a reinforcing part arranged at one side of the main ditch (11) and the molten iron branch ditch (12); and the reinforcing part is preset with a dismantling part (5), and the dismantling part (5) is close to the molten iron branch channel (12).

2. The novel slag-iron separation structure for the blast furnace according to claim 1, characterized in that: the length of the dismantling part (5) is 500mm +/-20 mm.

3. The novel slag-iron separation structure for the blast furnace according to claim 1, characterized in that: the height of the dismantling part (5) is 260mm +/-20 mm.

4. The novel slag-iron separation structure for the blast furnace as claimed in claim 1, wherein: the width of the removal part (5) is the same as the width of the reinforcement part.

5. The novel slag-iron separation structure for the blast furnace according to claim 1, characterized in that: the slag skimmer is provided with a slag iron channel, and the slag iron channel comprises two vertical channels communicated through a transverse channel.

6. The novel slag-iron separation structure for the blast furnace according to claim 5, wherein: the cross-sectional shape of the transverse channel and the cross-sectional shape of the vertical channel are both polygonal.

7. The novel slag-iron separation structure for the blast furnace as claimed in claim 1, wherein: the reinforcing part comprises a pouring layer (6) and a foundation layer (7), the pouring layer (6) is poured and formed on the foundation layer (7), and the foundation layer (7) is formed by laying bricks.

8. The novel slag-iron separation structure for the blast furnace according to claim 7, wherein: the reinforcing part comprises a steel plate outer shell (8), and the steel plate outer shell (8) is arranged on the outer sides of the pouring layer (6) and the foundation layer (7).

9. The novel slag-iron separation structure for the blast furnace according to claim 8, wherein: the height of the steel plate shell (8) is the same as the sum of the height of the pouring layer (6) and the height of the foundation layer (7).

10. The novel slag-iron separation structure for the blast furnace according to claim 1, characterized in that: the molten iron branch channel (12) is provided with a taphole (2).