Converter

Abstract

The utility model discloses a converter, which relates to the technical field of converter for steelmaking in metallurgical industry, and comprises a converter body and a plurality of converter mouth guard plates, the converter body comprises a converter shell and a refractory material, and the refractory material is arranged on the inner side wall of the converter shell; the furnace mouth protection plates are used for being detachably and fixedly connected to the top furnace mouth of the furnace body to provide supporting and stable mounting positions for furnace mouth refractory materials, and each furnace mouth protection plate is of an arc-shaped structure to reduce the distance between the furnace mouth and the movable flue, so that the distance between the furnace mouth and the movable flue is effectively reduced, and the heat value of the recycled converter gas is effectively increased.

Description

Technical Field

[0001] The utility model relates to the technical field of converters for steelmaking in the metallurgical industry, in particular to a converter. Background Art

[0002] Currently, the converter mouths in the steelmaking process of the metallurgical industry are all equipped with guard plates, primarily to secure the refractory material and protect the water-cooled furnace mouth. However, when the guard plates are made of flat cast iron with a single row of bolts, the following problems arise: if they are damaged or fall off during the addition of iron or scrap steel, the water-cooled furnace mouth is exposed, which can easily cause burns and water leaks. In addition, when the guard plates are damaged and fall off, the distance between the converter mouth and the active smoke hood is further increased, the air combustion coefficient of the dust removal system increases, and a large amount of carbon monoxide burns at the furnace mouth, resulting in a decrease in the calorific value of the recovered converter gas, which directly affects the converter's negative energy steelmaking performance. Utility Model Content

[0003] The purpose of the utility model is to provide a converter to solve the problems existing in the above-mentioned prior art, effectively reduce the distance between the furnace mouth and the active flue, and effectively improve the calorific value of the recovered converter gas.

[0004] To achieve the above purpose, the present invention provides the following solutions:

[0005] The utility model provides a converter, comprising: a furnace body and a plurality of furnace mouth guard plates, the furnace body comprising a converter shell and a refractory material, the refractory material being arranged on the inner side wall of the converter shell; each of the furnace mouth guard plates is used to be detachably fixedly connected to the top furnace mouth of the furnace body to provide support and a stable installation position for the furnace mouth refractory material, and each of the furnace mouth guard plates is an arc-shaped structure to reduce the distance between the furnace mouth and the active flue.

[0006] Preferably, the number of the furnace mouth guard plates is eight, and the eight furnace mouth guard plates form a ring along the circumference of the furnace mouth.

[0007] Preferably, it also includes a T-bolt and a first fixing nut. A furnace mouth water tank cover is provided on the top of the converter shell, a limiting groove is provided on the top of the furnace mouth water tank cover, and a first through hole is provided on the furnace mouth guard plate. The T-shaped end of the T-bolt is used to be clamped in the limiting groove, and the other end is used to pass through the first through hole and be threadedly connected to the first fixing nut.

[0008] Preferably, it also includes a furnace mouth flange, a plurality of external hexagonal bolts and a plurality of second fixing nuts, the furnace mouth flange is fixedly connected to the outer side of the furnace mouth water tank cover plate, a plurality of second through holes are provided on the furnace mouth flange, and a third through hole is provided on the furnace mouth guard plate, and one end of the external hexagonal bolt is used to pass through the second through hole and the third through hole and then be threadedly connected to the second fixing nut.

[0009] Preferably, a steel tapping port is provided on one side of the converter shell.

[0010] Preferably, the furnace mouth guard plate is made of cast steel.

[0011] Compared with the prior art, the utility model has achieved the following technical effects:

[0012] The utility model provides a converter which adopts an arc structure to reduce the distance between the furnace mouth and the active flue, controls the combustion coefficient of air sucked into the furnace mouth during the smelting process, and improves the calorific value of recovered converter gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0014] Figure 1 A schematic structural diagram of a converter provided by the utility model;

[0015] Figure 2 for Figure 1 A magnified image of the middle figure;

[0016] Figure 3 for Figure 1 Top view of the middle furnace mouth guard plate;

[0017] Figure 4 yes Figure 2 Middle C-direction cross-section;

[0018] Figure 5 yes Figure 3 Middle B-direction cross-section;

[0019] In the figure: 1. Furnace mouth guard plate; 2. Converter shell; 3. Taphole; 4. Refractory material; 5. T-bolt; 6. Hexagonal bolt; 7. Furnace mouth flange; 8. Furnace mouth water tank cover. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] The purpose of the utility model is to provide a converter to solve the problems existing in the above-mentioned prior art, effectively reduce the distance between the furnace mouth and the active flue, and effectively improve the calorific value of the recovered converter gas.

[0022] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0023] The utility model provides a converter, such as Figures 1 to 5 As shown, it includes: a furnace body and multiple furnace mouth guard plates 1, the furnace body includes a converter shell 2 and refractory material 4, and the refractory material 4 is arranged on the inner wall of the converter shell 2; each furnace mouth guard plate 1 is used to be detachably fixedly connected to the top furnace mouth of the furnace body to provide support and a stable installation position for the furnace mouth refractory material 4, and each furnace mouth guard plate 1 is an arc structure to reduce the distance between the furnace mouth and the active flue. By setting a detachable furnace mouth guard plate 1, support and a stable installation position are provided for the furnace mouth refractory material 4, thereby ensuring the stability of the refractory material 4; the furnace mouth guard plate 1 with an arc structure can reduce the distance between the furnace mouth and the active flue, control the combustion coefficient of the air inhaled by the furnace mouth of the converter during the smelting process, and improve the calorific value of the recovered converter gas.

[0024] In a preferred embodiment, the number of the furnace mouth guard plates 1 is eight, and the eight furnace mouth guard plates 1 form a ring along the circumference of the furnace mouth. The eight furnace mouth guard plates 1 form a ring, which can more comprehensively protect the furnace mouth and improve the overall stability and sealing.

[0025] In a preferred embodiment, the converter also includes a T-bolt 5 and a first fixing nut. A furnace mouth water tank cover 8 is provided on the top of the converter shell 2. A limiting groove is provided on the top of the furnace mouth water tank cover 8. A first through hole is provided on the furnace mouth guard plate 1. The T-shaped end of the T-bolt 5 is used to be clamped in the limiting groove, and the other end is used to pass through the first through hole and be threadedly connected to the first fixing nut. The connection method of the T-bolt and the first fixing nut makes the connection between the furnace mouth guard plate 1 and the furnace mouth water tank cover 8 more stable and easy to install and disassemble.

[0026] In a preferred embodiment, the converter also includes a furnace mouth flange 7, multiple external hexagonal bolts 6, and multiple second fixing nuts. The furnace mouth flange 7 is fixedly connected to the outer side of the furnace mouth water tank cover 8. Multiple second through holes are provided on the furnace mouth flange 7, and a third through hole is provided on the furnace mouth guard plate 1. One end of the external hexagonal bolt 6 is used to pass through the second through hole and the third through hole and then be threadedly connected to the second fixing nut. The cooperation of the external hexagonal bolt 6, the furnace mouth flange 7 and the second fixing nut further increases the connection strength of the furnace mouth guard plate 1 and improves the overall stability of the converter.

[0027] In a preferred embodiment, a tapping port 3 is provided on one side of the converter shell 2. The provision of the tapping port 3 facilitates the tapping operation of the converter and improves production efficiency.

[0028] In a preferred embodiment, the furnace mouth guard plate 1 is made of cast steel (ZG270-500). The cast steel furnace mouth guard plate 1 avoids the disadvantage of cast iron being very brittle, reduces the risk of breakage, fragmentation and even falling off due to impact, and improves the durability and safety of the guard plate.

[0029] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only intended to help understand the method and core concept of the present invention. At the same time, those skilled in the art will find that the specific implementation methods and application scopes may vary based on the concept of the present invention. In summary, the contents of this specification should not be construed as limiting the present invention.

Claims

1. A converter, characterized in that: include: A furnace body, comprising a converter shell and a refractory material, wherein the refractory material is arranged on the inner side wall of the converter shell; Multiple furnace mouth guard plates, each of which is used to be detachably fixedly connected to the top furnace mouth of the furnace body to provide support and a stable installation position for the furnace mouth refractory material, and each of the furnace mouth guard plates is an arc-shaped structure to reduce the distance between the furnace mouth and the active flue.

2. The converter according to claim 1, characterized in that: The number of the furnace mouth guard plates is eight, and the eight furnace mouth guard plates form a ring along the circumference of the furnace mouth.

3. The converter according to claim 2, characterized in that: It also includes a T-shaped bolt and a first fixing nut. A furnace mouth water tank cover is provided on the top of the converter shell. A limiting groove is provided on the top of the furnace mouth water tank cover. A first through hole is provided on the furnace mouth guard plate. The T-shaped end of the T-shaped bolt is used to be clamped in the limiting groove, and the other end is used to pass through the first through hole and be threadedly connected to the first fixing nut.

4. The converter according to claim 1, wherein: It also includes a furnace mouth flange, a plurality of external hexagonal bolts and a plurality of second fixing nuts. The furnace mouth flange is fixedly connected to the outer side of the furnace mouth water tank cover plate. A plurality of second through holes are provided on the furnace mouth flange. A third through hole is provided on the furnace mouth guard plate. One end of the external hexagonal bolt is used to pass through the second through hole and the third through hole and then be threadedly connected to the second fixing nut.

5. The converter according to claim 1, wherein: A steel tapping port is provided on one side of the converter shell.

6. The converter according to claim 1, wherein: The furnace mouth guard plate is made of cast steel.

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