CN117107179A

CN117107179A - Furnace nose

Info

Publication number: CN117107179A
Application number: CN202311242595.7A
Authority: CN
Inventors: 张伟浩; 杜蓉; 周诗正; 李金�; 钟荣飞; 陈功政; 王小兵; 毛盾; 张中大; 周浩
Original assignee: Wuhan Iron and Steel Co Ltd
Current assignee: Wuhan Iron and Steel Co Ltd
Priority date: 2023-09-25
Filing date: 2023-09-25
Publication date: 2023-11-24

Abstract

The application belongs to the technical field of hot galvanizing equipment, and particularly relates to a furnace nose. The furnace nose comprises an overflow plate, a slag baffle, a shell and a liquid pump. The overflow plate and the slag baffle are both positioned in the shell, the overflow plate, the slag baffle and the shell are surrounded to form an overflow groove and a communication channel for the strip steel to penetrate in and out, the overflow groove extends to the two sides of the width direction of the strip steel and one side of the strip steel, which is far away from the slag baffle, zinc liquid and zinc slag in the communication channel overflow into the overflow groove through the overflow plate from the two sides of the width direction of the strip steel and one side of the strip steel, which is far away from the slag baffle, and the liquid pumping pump is communicated with the overflow groove. After the design of the application is adopted, the zinc liquid in the communicating channel can overflow into the overflow groove through the two sides of the width direction of the strip steel, so that the three sides overflow simultaneously, the zinc liquid and the zinc slag between the two sides of the width of the strip steel and the slag baffle plate can flow out more smoothly, the phenomenon that the strip steel is attached with the zinc slag towards the surface of the slag baffle plate is avoided, the influence of the zinc slag on the surface quality of the strip steel is reduced, and the surface quality of the strip steel is improved.

Description

Furnace nose

Technical Field

The application belongs to the technical field of hot galvanizing equipment, and particularly relates to a furnace nose.

Background

With the development of continuous hot galvanizing technology, the requirements on the surface quality of a hot galvanized sheet are higher and higher, and an overflow groove is a main component of a hot galvanizing furnace nose. Generally, an overflow structure is designed in the furnace nose of the hot galvanizing unit, so that the slag on the surface of the zinc liquid continuously overflows into an overflow groove, and the overflowed zinc liquid filtered by the zinc slag of the zinc liquid is discharged into a zinc pot again through a liquid suction pump, so that the influence of the zinc slag on the surface quality of strip steel is effectively reduced.

In the related art, the overflow groove is provided with a single side, namely one side of the strip steel, far away from the slag baffle plate overflows, zinc liquid positioned on the side of the strip steel, close to the slag baffle plate overflows from one side of the strip steel, far away from the slag baffle plate, and the zinc liquid stays close to the slag baffle plate side for a long time, so that zinc slag in the zinc liquid is attached to the surface of the strip steel, close to the slag baffle plate side, and the quality of the strip steel is affected.

Disclosure of Invention

The application aims to at least solve the technical problem that the overflow structure in the furnace nose makes the overflow of the molten zinc on the side of the strip steel close to the slag baffle difficult to a certain extent in the related art. To this end, the application provides a furnace nose.

The furnace nose provided by the embodiment of the application comprises: the slag blocking device comprises an overflow plate, a slag blocking plate and a shell, wherein the overflow plate and the slag blocking plate are both positioned in the shell;

the overflow plate, the slag baffle and the shell are surrounded to form an overflow groove and a communication channel for the strip steel to penetrate in and out;

the overflow plates extend to two sides of the strip steel in the width direction and one side of the strip steel away from the slag baffle;

zinc liquid and zinc slag in the communication channel overflow into the overflow groove through the overflow plate from both sides in the width direction of the strip steel and one side, away from the slag baffle, of the strip steel;

the overflow tank is characterized by further comprising a liquid pump, wherein the liquid pump is communicated with the overflow tank.

In some embodiments, the furnace nose further comprises a level well disposed outside the isopipe in communication with the isopipe, the level well being for measuring the level of the liquid in the isopipe.

In some embodiments, the overflow plate comprises a first overflow plate and two second overflow plates arranged at intervals;

the first overflow plates are positioned at one ends of the two second overflow plates far away from the slag baffle, and the first overflow plates are hermetically connected with the two second overflow plates;

the first overflow plate and the slag blocking plate are oppositely arranged, and one end, far away from the first overflow plate, of the second overflow plate is in airtight connection with the slag blocking plate;

the overflow lip of the first overflow plate is flush with the overflow lip of the second overflow plate.

In some embodiments, the lip of the first overflow plate is wavy along a direction perpendicular to the first overflow plate;

the lip of the second overflow plate is linear along the direction perpendicular to the second overflow plate;

the lips of the second overflow plate are flush with the valleys of the lips of the first overflow plate.

In some embodiments, the upper part of the shell is of an open structure, and the bottom wall of the shell is provided with an opening for the strip steel to pass out;

one end of the first overflow plate and one end of the second overflow plate, which are close to the bottom wall of the shell, are connected with the bottom wall of the shell in a sealing way;

one end of the slag baffle, which is close to the bottom wall of the shell, is in airtight connection with the bottom wall of the shell;

the opening is positioned among the slag baffle, the first overflow plate and the second overflow plate;

along the width direction of the strip steel, two sides of the slag baffle are connected with the side wall of the shell in a sealing way;

the first overflow plate, the second overflow plate and the slag baffle are surrounded by the bottom wall of the shell to form the communication channel;

the slag baffle, the first overflow plate, the second overflow plate, the bottom wall of the shell and the side wall of the shell are surrounded to form the overflow groove.

In some embodiments, a plurality of first reinforcing plates are arranged between the overflow plate and the side wall of the shell at intervals, and the first reinforcing plates are connected to the overflow plate and the side wall of the shell;

a plurality of second reinforcing plates are arranged between the side wall of the shell and the slag baffle at intervals, and the second reinforcing plates are connected to the side wall of the shell and the slag baffle.

In some embodiments, the first reinforcing plate is remote from the lip of the overflow plate.

In some embodiments, the surface of the overflow lip of the overflow plate is provided with a ceramic coating, the ceramic coating having a thickness of mm.

In some embodiments, the overflow lip of the overflow plate is arc-shaped inclined towards the direction of the overflow groove perpendicular to the width direction of the strip steel.

In some embodiments, the furnace nose is provided with one or two liquid pumps, and the liquid pumps are positioned on one side or two sides of the overflow trough along the width direction of the strip steel.

The application has at least the following beneficial effects:

the application comprises an overflow plate, a slag baffle, a shell and a liquid pump, wherein the overflow plate and the slag baffle are both positioned in the shell, and the overflow plate, the slag baffle and the shell are surrounded to form an overflow groove and a communication channel for the strip steel to penetrate in and out. The overflow plate extends to two sides of the strip steel in the width direction and one side of the strip steel away from the slag baffle. After the design, zinc liquid and zinc slag in the communication channel can overflow into the overflow groove through the overflow plate from both sides in the width direction of the strip steel and one side of the strip steel away from the slag baffle plate, so that three-side simultaneous overflow is realized.

In the related art, zinc liquid and zinc slag in the communicating channel overflows into the overflow groove only through one side of the strip steel, which is far away from the slag baffle. After the design of the application is adopted, the zinc liquid in the communicating channel can overflow into the overflow groove through the two sides of the width direction of the strip steel, so that the three sides overflow simultaneously, the zinc liquid and the zinc slag between the two sides of the width of the strip steel and the slag baffle plate can flow out more smoothly, the zinc slag is prevented from adhering to the surface of the strip steel facing the slag baffle plate to a certain extent, the influence of the zinc slag on the surface quality of the strip steel is reduced, and the surface quality of the strip steel is further improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic top view of a furnace nose of the present application;

FIG. 2 is a cross-sectional view taken along the direction A-A in FIG. 1;

FIG. 3 is a schematic view of the structure of the furnace nose of the present application after being placed in a zinc bath;

FIG. 4 is a front view of the furnace nose of the present application;

FIG. 5 is a schematic top view of a furnace nose of the related art;

fig. 6 is a schematic view of the lip of the overflow plate in a wavy shape.

Reference numerals: 100-overflow plate, 110-first overflow plate, 120-second overflow plate, 200-slag baffle, 300-shell, 310-opening, 400-communication channel, 500-overflow groove, 600-liquid pump, 700-liquid level well, 800-first reinforcing plate, 900-second reinforcing plate and 1000-strip steel.

Detailed Description

The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

It should be noted that all the directional indicators in the embodiments of the present application are only used to explain the relative positional relationship, movement conditions, etc. between the components in a specific posture, and if the specific posture is changed, the directional indicators are correspondingly changed.

In the present application, unless specifically stated and limited otherwise, the terms "connected," "affixed," and the like are to be construed broadly, and for example, "affixed" may be a fixed connection, a removable connection, or an integral body; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.

Furthermore, descriptions such as those referred to as "first," "second," and the like, are provided for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implying an order of magnitude of the indicated technical features in the present disclosure. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present application.

As shown in fig. 5, in actual operation, the inventors found that the overflow trough overflows only on one side, i.e., the side of the strip steel away from the slag trap, and that the zinc liquid on the side of the strip steel close to the slag trap is not likely to overflow from the side of the strip steel away from the slag trap, and the zinc liquid stays close to the slag trap side for a long time, so that the zinc slag in the zinc liquid adheres to the surface of the strip steel close to the slag trap side, and the quality of the strip steel is affected.

Therefore, the embodiment of the application provides a furnace nose, which can change the overflow direction of zinc liquid and zinc slag in a communication channel, promote the flow of the zinc liquid and the zinc slag between the strip steel 1000 and the slag baffle 200, and avoid the zinc slag from being attached to the surface of the strip steel 1000 close to the slag baffle 200 after being accumulated.

The application is described below with reference to specific embodiments in conjunction with the accompanying drawings:

referring to fig. 1, 2 and 4, the furnace nose of the present application includes an overflow plate 100, a slag trap 200, a housing 300 and a liquid pump 600.

Both the overflow plate 100 and the slag trap are located within the housing 300. The overflow plate 100, the slag trap 200 and the outer shell 300 are surrounded to form an overflow trough 500 and a communication channel 400 for the penetration and exit of the strip steel 1000. The strip steel 1000 penetrates from one side of the communication channel 400 and then penetrates from the other side, and zinc liquid is contained in the communication channel 400, so that the galvanization operation of the strip steel 1000 is completed.

The overflow plate 100 extends to both sides in the width direction of the strip 1000 and to a side of the strip 1000 away from the slag trap 200, that is, the overflow plate 100 surrounds both sides in the width direction of the strip 1000 and a side of the strip 1000 away from the slag trap 200. By such design, the zinc liquid and zinc slag in the communicating channel 400 can overflow into the overflow trough 500 through the overflow plate 100 from both sides of the strip steel 1000 in the width direction and the side of the strip steel 1000 away from the slag baffle 200.

The height of the slag plate 200 is higher than the liquid level in the communicating channel 400, and the height of the overflow plate 100 is lower than the height of the slag plate 200, so that zinc liquid and zinc slag in the communicating channel 400 can flow out of the overflow plate 100, but cannot flow out of the slag plate 200.

The liquid pump 600 is communicated with the bottom of the overflow groove 500, and pumps out the zinc liquid in the overflow groove 500, and the zinc slag floats on the surface of the zinc liquid and is reserved in the overflow groove. In general, the liquid pump 600 pumps out the zinc liquid overflowed in the overflow trough 500, and then the zinc liquid is added into the zinc pot again, so that the zinc pot can be recycled.

When the strip steel passes through the communication channel and stretches into zinc liquid for galvanization, a certain gap exists between the strip steel 1000 and the communication channel 400. In the related art, as shown in fig. 5, the zinc liquid near the overflow groove can overflow into the overflow groove directly through the overflow plate, while the zinc liquid near the slag baffle of the strip steel is difficult to overflow from the overflow plate near the overflow groove across the strip steel under the blocking of the strip steel, and can adhere to the surface of the strip steel. Fig. 5 shows the flow direction of zinc liquid and zinc slag in the communicating channel in the related art.

After the design of the application is adopted, as shown in fig. 1, zinc liquid in the communication channel 400 can drive zinc slag to overflow simultaneously from both sides of the strip steel 1000 in the width direction and one side of the strip steel 1000 away from the slag baffle 200, so that three-surface overflow is formed. The zinc liquid and the zinc slag between the strip steel 1000 and the slag baffle 200 can flow out rapidly through the two sides of the width direction of the strip steel 1000, the phenomenon that the zinc slag on the zinc liquid surface is adhered to the surface of the strip steel because the zinc slag cannot flow out effectively is improved, the difficulty that the zinc slag is accumulated between the strip steel 1000 and the slag baffle 200 is increased, the risk that the strip steel 1000 is adhered by the zinc slag is reduced, and the quality of the strip steel 1000 is further improved.

In some embodiments of the present application, the furnace nose of the present application further comprises a level well 700 disposed outside of isopipe 500 in communication with isopipe 500 for measuring the level of the liquid within isopipe 500. The liquid level of the zinc liquid in the overflow trough 500 is visually observed through the liquid level well 700, so that an operator can conveniently adjust the liquid drawing pump 600 in time. The structure and specific connection of the liquid level well 700 are known to those skilled in the art, and will not be described herein.

In some embodiments of the present application, as shown in fig. 1, the overflow plate 100 includes a first overflow plate 110 and two second overflow plates 120 spaced apart from each other. The first overflow plates 110 are located at one ends of the two second overflow plates 120 away from the slag trap 200, and the first overflow plates 110 are hermetically connected to the two second overflow plates 120. The first overflow plate 110 and the slag trap 200 are arranged opposite to each other, and one end of the second overflow plate 120 away from the second overflow plate 120 is connected with the slag trap 200 in a sealing manner. The overflow lip of the first overflow plate 110 and the overflow lip of the second overflow plate 120 are flush.

The manner of airtight connection between the first overflow plate 110, the second overflow plate 120 and the slag trap 200 is variously such as welding, bonding, etc.

The rear overflow plate 100 is C-shaped as a whole, and zinc liquid and zinc slag on both sides of the strip steel 1000 in the width direction and on the side of the strip steel 1000 close to the slag baffle 200 are diffused by the two second overflow plates 120, and zinc liquid and zinc slag on the strip steel 1000 close to the first overflow plate 110 are diffused by the first overflow plate 110.

The overflow lip of the first overflow plate 110 and the overflow lip of the second overflow plate 120 are flush to ensure that zinc liquid and zinc slag in the communication channel 400 can overflow through the first overflow plate 110 and the two second overflow plates 120 at the same time, thereby ensuring the overflow effect. The end of the overflow plate 100 near the liquid level for the zinc bath to flow past is called the overflow lip.

The lip of the overflow plate 100 may be linear, but the flatness of the linear lip is difficult to be ensured during processing, if the processing precision of the linear lip is not high, the lip may be locally high and locally low, and the zinc liquid and zinc slag in the communication channel 400 cannot uniformly overflow from the lip, so that the overflow effect is poor. The lip may also be wavy, as shown in fig. 6, the lip has a plurality of low points (wave troughs) uniformly spaced, and the zinc liquid and zinc slag in the communication channel 400 can flow out through each wave trough, so that the requirement on the machining precision of the wavy lip is low, and the machining of the overflow plate 100 is simpler.

In some embodiments of the present application, the lip of the first overflow plate 110 is wavy in a direction perpendicular to the first overflow plate 110. The lip of the second overflow plate 120 is linear in a direction perpendicular to the second overflow plate 120. The lips of the second overflow plate 120 are flush with the valleys of the lips of the first overflow plate 110.

In some embodiments of the present application, the lips of the first overflow plate 110 are wavy in a direction perpendicular to the first overflow plate 110, and the lips of the second overflow plate 120 are wavy in a direction perpendicular to the second overflow plate 120, with the valleys of the two waves being flush.

In some embodiments of the present application, as shown in fig. 2, the upper portion of the casing 300 is of an open structure, the bottom wall of the casing 300 is provided with an opening 310 through which the strip steel 1000 passes, one end of the first overflow plate 110 and the second overflow plate 120, which is close to the bottom wall of the casing 300, is in airtight connection with the bottom wall of the casing 300, one end of the slag trap 200, which is close to the bottom wall of the casing 300, is in airtight connection with the bottom wall of the casing 300, and the opening 310 is located between the slag trap 200, the first overflow plate 110 and the second overflow plate 120. Along the width direction of the strip steel 1000, two sides of the slag trap 200 are connected with the side wall of the outer shell 300 in a sealing manner. The first overflow plate 110, the second overflow plate 120, and the bottom wall of the housing 300 surround to form a communication channel 400. The slag trap 200, the first overflow plate 110, the second overflow plate 120, the bottom wall of the housing 300, and the side walls of the housing 300 surround to form an overflow launder 500.

In some embodiments of the present application, as shown in fig. 1 and 2, a plurality of first reinforcing plates 800 are provided between the overflow plate 100 and the sidewall of the housing 300 at intervals, and the first reinforcing plates 800 are connected to the overflow plate 100 and the sidewall of the housing 300; a plurality of second reinforcing plates 900 are provided at intervals between the sidewall of the outer case 300 and the slag trap 200, and the second reinforcing plates 900 are connected to the sidewall of the outer case 300 and the slag trap 200.

By the design of the first reinforcing plate 800 and the second reinforcing plate 900, the deformation of the overflow plate 100 and the slag trap 200 is avoided, and the overflow effect of zinc liquid is influenced.

In some embodiments of the present application, the first reinforcing plate 800 is located away from the lip of the overflow plate 100, that is, the first reinforcing plate 800 is located near the bottom of the overflow groove 500, so that the obstruction of the first reinforcing plate 800 to the flow of the zinc liquid and the zinc slag can be reduced, and the smooth circulation of the zinc liquid and the zinc slag in the overflow groove 500 can be ensured.

In some embodiments, the surface of the overflow lip is provided with a ceramic coating having a thickness of 2mm. In some embodiments, the ceramic coating is a composite fine ceramic coating, and after the ceramic coating is arranged, phenomena of zinc slag adhesion, nodulation, slag hanging and the like on the overflow lip can be avoided to a certain extent, and the overflow effect of zinc liquid and zinc slag can be improved to a certain extent.

In some embodiments, the overflow lip of the overflow plate 100 is rounded perpendicular to the width direction of the strip 1000, as shown in FIG. 2, sloping toward the overflow trough 500. The circular arc overflow lip can reduce the obstruction of the overflow lip, so that the overflow is smoother.

The working principle of the furnace nose provided by the embodiment of the application is as follows:

as shown in fig. 3, in use, the lower part of the furnace nose goes deep into the zinc bath, the zinc liquid in the zinc bath enters the communication channel 400 through the opening 310 of the bottom wall of the housing 300, then the strip steel 1000 penetrates into the communication channel 400 from above, then penetrates out of the opening 310, the strip steel 1000 completes the galvanization operation in the communication channel, at this time, the zinc liquid and the zinc slag in the communication channel 400 overflow simultaneously through the first overflow plate 110 and the second overflow plate 120 and overflow into the overflow groove 500, the liquid pump 600 pumps out the zinc liquid in the overflow groove 500, and then the zinc liquid is added into the zinc pot again, and the galvanization operation of the strip steel 1000 is continued.

In summary, the furnace nose provided in an embodiment of the present application, in the description herein, the description with reference to the terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples" etc. means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Further, one skilled in the art can engage and combine the different embodiments or examples described in this specification.

Claims

1. A furnace nose, comprising: the slag trap comprises an overflow plate (100), a slag trap (200) and a shell (300), wherein the overflow plate (100) and the slag trap (200) are both positioned in the shell (300);

the overflow plate (100), the slag baffle (200) and the shell (300) are surrounded to form an overflow groove (500) and a communication channel (400) for the penetration and the penetration of the strip steel (1000);

the overflow plate (100) extends to both sides in the width direction of the strip steel (1000) and one side of the strip steel (1000) away from the slag trap (200);

zinc liquid and zinc slag in the communication channel (400) overflows into the overflow groove (500) through the overflow plate (100) from two sides of the strip steel (1000) in the width direction and one side of the strip steel (1000) away from the slag baffle (200);

also comprises a liquid pump (600) which is communicated with the overflow trough (500).

2. The furnace nose according to claim 1, further comprising a level well (700) arranged outside the overflow trough (500) in communication with the overflow trough (500), the level well (700) being adapted to measure the level of liquid in the overflow trough (500).

3. The furnace nose according to claim 1, characterized in that the overflow plate (100) comprises a first overflow plate (110) and two second overflow plates (120) arranged at intervals;

the first overflow plates (110) are positioned at one ends of the two second overflow plates (120) far away from the slag baffle (200), and the first overflow plates (110) are connected to the two second overflow plates (120) in a sealing manner;

the first overflow plate (110) and the slag blocking plate (200) are oppositely arranged, and one end, far away from the first overflow plate (110), of the second overflow plate (120) is in airtight connection with the slag blocking plate (200);

the overflow lip of the first overflow plate (110) and the overflow lip of the second overflow plate (120) are flush.

4. A furnace nose according to claim 3, characterized in that the lips of the first overflow plate (110) are wavy in a direction perpendicular to the first overflow plate (110);

along the direction perpendicular to the second overflow plate (120), the lip of the second overflow plate (120) is linear;

the lip of the second overflow plate (120) is flush with the trough of the lip of the first overflow plate (110).

5. A furnace nose according to claim 3, characterized in that the upper part of the outer shell (300) is of an open structure, and the bottom wall of the outer shell (300) is provided with an opening (310) for the strip steel (1000) to pass out;

one end of the first overflow plate (110) and one end of the second overflow plate (120) close to the bottom wall of the shell (300) are connected with the bottom wall of the shell (300) in a sealing mode;

one end of the slag baffle (200) close to the bottom wall of the shell (300) is connected with the bottom wall of the shell (300) in a sealing way;

the opening (310) is located between the slag trap (200), the first overflow plate (110) and the second overflow plate (120);

along the width direction of the strip steel (1000), two sides of the slag baffle (200) are connected with the side wall of the shell (300) in a sealing way;

the first overflow plate (110), the second overflow plate (120), the slag trap (200) and the bottom wall of the shell (300) are surrounded to form the communication channel (400);

the slag trap (200), the first overflow plate (110), the second overflow plate (120), the bottom wall of the shell (300) and the side wall of the shell (300) are surrounded to form the overflow groove (500).

6. The furnace nose according to claim 5, characterized in that a plurality of first reinforcing plates (800) are provided at intervals between the overflow plate (100) and the side walls of the housing (300), the first reinforcing plates (800) being connected to the overflow plate (100) and the side walls of the housing (300);

a plurality of second reinforcing plates (900) are arranged between the side wall of the shell (300) and the slag baffle (200) at intervals, and the second reinforcing plates (900) are connected to the side wall of the shell (300) and the slag baffle (200).

7. The furnace nose according to claim 6, characterized in that the first stiffening plate (800) is remote from the lip of the overflow plate (100).

8. The furnace nose according to any of claims 1-7, characterized in that the surface of the overflow lip of the overflow plate (100) is provided with a ceramic coating, the thickness of which is 2mm.

9. The furnace nose according to any one of claims 1 to 7, wherein the overflow lip of the overflow plate (100) is arc-shaped inclined toward the overflow groove (500) perpendicularly to the width direction of the strip steel (1000).

10. The furnace nose according to any one of claims 1 to 7, characterized in that the furnace nose is provided with one or two liquid pumps (600), the liquid pumps (600) being located on one side or both sides of the overflow launder (500) in the width direction of the strip steel (1000).