CN215103369U

CN215103369U - Long-life air-cooled molten iron desulfurization spray gun

Info

Publication number: CN215103369U
Application number: CN202023336426.4U
Authority: CN
Inventors: 陈学东; 于林辉; 陈树村
Original assignee: Yingkou Dong Bang Environmental Protection Polytron Technologies Inc
Current assignee: Yingkou Dong Bang Environmental Protection Polytron Technologies Inc
Priority date: 2020-12-31
Filing date: 2020-12-31
Publication date: 2021-12-10
Anticipated expiration: 2030-12-31

Abstract

The utility model belongs to the field of metallurgical molten iron desulphurization equipment, in particular to a long-life air-cooled molten iron desulphurization spray gun, wherein the top of a gun body (2) is provided with an air distribution chamber (3); a core pipe (4) and a sleeve (5) are fixedly arranged in the middle area of the gun body (2); the core tube (4) is fixedly arranged in the sleeve (5); the top end of the sleeve (5) is fixedly connected with the bottom of the gas distribution chamber (3), and an inner chamber formed by the inner wall of the sleeve and the outer wall of the core pipe (4) is communicated with the cavity of the gas distribution chamber (3); an airflow cavity (6) is fixedly arranged at the bottom end of the sleeve (5); the airflow cavity (6) is provided with an airflow cavity outlet (601) at the side wall of the gun body (2); a desulfurizer outlet (401) at the bottom of the core tube (4) corresponds to the airflow cavity outlet (601); an air supply port (7) is fixedly arranged on the assembly flange (1); the air supply opening (7) is communicated with the air distribution chamber (3). The utility model discloses simple structure, desulfurization efficiency is high, can restrain and spout magnesian agent mouth blocking phenomenon and take place.

Description

Long-life air-cooled molten iron desulfurization spray gun

Technical Field

The utility model belongs to a metallurgical molten iron desulphurization equipment field especially relates to a long-life air-cooled molten iron desulfurization spray gun.

Background

The external desulfurization technology of the blast furnace molten iron begins to be applied in the 30 th century of the 20 th century, and is rapidly popularized after the development of the steelmaking process of the top-blown oxygen converter in the 60 th century. The adoption of the technology can not only greatly reduce the desulfurization burden of blast furnace ironmaking, but also simplify the desulfurization treatment link of the steelmaking process, and realize the aims of high yield and low consumption. The molten iron desulfurizing spray gun is a component for conveying desulfurizing agent and spraying it in molten iron by spraying method, and when it is used, the magnesium treating agent system uses inert gas as conveying medium and is sprayed into molten iron by means of spray gun core tube, and the spray gun not only can be heated and impacted, but also can be acted by strong vibration and impact type mechanical load. The service life and the performance of the pretreatment technology directly influence the development and the application of the molten iron pretreatment technology. In addition, the existing desulfurization spray gun is frequently blocked at a magnesia mixture spraying port after being used for a period of time, and the service life of the desulfurization spray gun can be greatly shortened due to the occurrence of the phenomenon.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects of the prior art and provide a long-life air-cooled molten iron desulphurization spray gun which has simple structure and high desulphurization efficiency and can inhibit the blockage of a magnesium spraying agent port.

In order to solve the technical problem, the utility model discloses a realize like this:

the long-life air-cooled molten iron desulphurization spray gun comprises an assembly flange and a gun body; the top of the gun body is provided with a gas distribution chamber; a core pipe and a sleeve are fixedly arranged in the middle area of the gun body; the core pipe is fixedly arranged in the sleeve; the top end of the sleeve is fixedly connected with the bottom of the gas distribution chamber, and an inner chamber formed by the inner wall of the sleeve and the outer wall of the core pipe is communicated with the cavity of the gas distribution chamber; an airflow cavity is fixedly arranged at the bottom end of the sleeve; the airflow cavity is provided with an airflow cavity outlet at the side wall of the gun body; the desulfurizer outlet at the bottom of the core tube corresponds to the outlet of the airflow cavity; an air supply port is fixedly arranged on the assembling flange; the air supply port is communicated with the air distribution chamber.

As a preferred scheme, the air flow chamber of the utility model is provided with a cone structure at the outlet.

Furthermore, the number of the outlets of the airflow cavity is two; the number of the desulfurizer outlets is two.

The utility model discloses simple structure, desulfurization efficiency is high, can restrain and spout magnesian agent mouth blocking phenomenon and take place. In addition, the utility model discloses can also form the inert gas stream in the inner chamber through sleeve pipe inner wall and core pipe outer wall and protect the core pipe to avoid fuse-element high temperature damage. The utility model discloses a core pipe bottom desulfurizer export sets up with air current chamber export interval, exports desulfurizer and melt separation to supplementary completion of spouting the delivery of spouting the magnesia mixture through the inert gas air current.

Drawings

The present invention will be further described with reference to the accompanying drawings and the following detailed description. The scope of the present invention is not limited to the following description.

Fig. 1 is a schematic view of the overall structure of the present invention.

In the figure: 1. assembling a flange; 2. a gun body; 3. a gas distribution chamber; 4. a core tube; 401. a desulfurizer outlet; 5. a sleeve; 6. an airflow chamber; 601. an airflow chamber outlet; 7. an air supply port;

Detailed Description

As shown in the figure, the long-life air-cooled molten iron desulphurization spray gun comprises an assembly flange 1 and a gun body 2; the top of the gun body 2 is provided with a gas distribution chamber 3; a core tube 4 and a sleeve 5 are fixedly arranged in the middle area of the gun body 2; the core tube 4 is fixedly arranged in the sleeve 5; the top end of the sleeve 5 is fixedly connected with the bottom of the gas distribution chamber 3, and an inner chamber formed by the inner wall of the sleeve and the outer wall of the core tube 4 is communicated with the cavity of the gas distribution chamber 3; an airflow cavity 6 is fixedly arranged at the bottom end of the sleeve 5; the airflow cavity 6 is provided with an airflow cavity outlet 601 at the side wall of the gun body 2; the desulfurizing agent outlet 401 at the bottom of the core tube 4 corresponds to the airflow cavity outlet 601; an air supply opening 7 is fixedly arranged on the assembling flange 1; the air supply opening 7 is communicated with the air distribution chamber 3. The sleeve 5 of the gun body 2 is externally coated with a refractory material protective layer.

The airflow cavity outlet 601 of the airflow cavity 6 of the utility model adopts a cone structure. The outlet 601 of the airflow cavity adopts a cone structure design, so that the synergistic effect of the inert gas flow and the magnesium agent flow can be enhanced, and the utilization rate of the desulfurizer is improved. The number of the airflow cavity outlets 601 of the utility model can be two; the desulfurizing agent outlet 401 may be provided in two. Of course, in actual design, more than two structural designs can be adopted for the airflow cavity outlet 601 and the desulfurizer outlet 401. The design of the magnesium agent multi-nozzle can improve the combined dosage of the magnesium agent and the melt in unit time, thereby further improving the desulfurization efficiency of the melt.

When concrete operation, the utility model discloses an assembly flange fixes on the spray gun operation panel, and inert gas sends inert gas into distribution chamber 3 through air feed opening 7, and the inner chamber that inert gas rethread sleeve pipe 5 inner wall and core pipe outer wall formed shifts to in the air current chamber 6, finally from air current chamber export 601 blowout, at inert gas flow in-process, the temperature field environment of core pipe 4 can obviously be improved. The magnesium agent sprayed from the core tube 4 is sprayed from the outlet 601 of the airflow cavity under the entrainment of the inert gas in the airflow cavity 6.

In the description of the present invention, it is to be understood that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.

In the present invention, unless otherwise expressly stated or limited, the terms "disposed," "connected," "secured," and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; they may be directly connected or indirectly connected through an intermediate, and those skilled in the art can understand the specific meaning of the above terms in the present invention according to the specific situation.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The long-life air-cooled molten iron desulphurization spray gun comprises an assembly flange (1) and a gun body (2); it is characterized in that the top of the gun body (2) is provided with a gas distribution chamber (3); a core pipe (4) and a sleeve (5) are fixedly arranged in the middle area of the gun body (2); the core tube (4) is fixedly arranged in the sleeve (5); the top end of the sleeve (5) is fixedly connected with the bottom of the gas distribution chamber (3), and an inner chamber formed by the inner wall of the sleeve and the outer wall of the core pipe (4) is communicated with the cavity of the gas distribution chamber (3); an airflow cavity (6) is fixedly arranged at the bottom end of the sleeve (5); an airflow cavity outlet (601) is formed in the airflow cavity (6) on the side wall of the gun body (2); a desulfurizer outlet (401) at the bottom of the core pipe (4) corresponds to an airflow cavity outlet (601); an air supply port (7) is fixedly arranged on the assembling flange (1); the air supply opening (7) is communicated with the air distribution chamber (3).

2. The long life air-cooled molten iron desulfurization lance of claim 1, wherein: the airflow cavity outlet (601) of the airflow cavity (6) adopts a cone structure.

3. The long life air-cooled molten iron desulfurization lance according to claim 2, characterized in that: the number of the airflow cavity outlets (601) is two; the number of the desulfurizer outlets (401) is two.