Device for baking swing nozzle of blast furnace

Abstract

The utility model provides a device for baking a swing nozzle of a blast furnace, which comprises a roaster cover, the roaster cover is arranged at the upper part of the swing nozzle of the blast furnace, a combustion cavity is formed at the concave part of the roaster cover and the swing nozzle of the blast furnace, the roaster cover is hollow to form an air cavity, and the air cavity is connected with a combustion fan. An air outlet is formed in the lower surface of the roaster cover, a gas main pipeline is arranged on the upper surface of the roaster cover and connected with a plurality of gas branches, a plurality of gas holes are formed in the roaster cover in a penetrating mode, and the gas branches are arranged in the gas holes. And the gas main pipeline is connected with a coke oven gas pipeline. According to the utility model, the water removal efficiency can be obviously improved, and the energy generated by combustion can be saved.

Description

Technical Field

[0001] The utility model relates to the technical field of steel smelting, in particular to a device for baking a swing nozzle of a blast furnace. Background Art

[0002] The refractory material used in the blast furnace is made of corundum, alumina, clay, silicon carbide, coke, asphalt and other raw materials mixed with water. Due to the presence of water, it must be baked for a certain period of time before it can be used for tapping iron in actual use.

[0003] At present, the method for removing moisture from the blast furnace nozzle is as follows: a gas pipeline is placed on the upper part of the blast furnace nozzle, and the gas is directly ignited to generate a flame to burn by itself, so that the heat of the blast furnace nozzle is evaporated through combustion.

[0004] However, the existing method of removing water from the blast furnace nozzle has certain shortcomings. The direct combustion method causes serious heat dissipation, which indirectly wastes heat energy and water removal efficiency. In summary, a device that can improve water removal efficiency needs to be invented. Utility Model Content

[0005] The utility model provides a device for baking a blast furnace swing nozzle, which solves the problem of low water removal efficiency of the existing blast furnace swing nozzle water removal device.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0007] A device for baking a blast furnace swing nozzle comprises a baker cover, wherein the baker cover is arranged on the upper part of the blast furnace swing nozzle, the baker cover and the depression of the blast furnace swing nozzle form a combustion chamber, the baker cover is hollow inside to form an air cavity, the air cavity is connected to a combustion-supporting fan, an air outlet is opened on the lower surface of the baker cover, a gas main line is arranged on the upper surface of the baker cover, the gas main line is connected to a plurality of gas branches, a plurality of gas holes are penetrated on the baker cover, the gas branches are arranged in the gas holes, the gas main line is connected to a coke oven gas pipeline, and a burner is arranged on the baker cover.

[0008] Furthermore, the lower end of the gas branch protrudes from the lower surface of the roaster cover and is located in the combustion chamber.

[0009] Furthermore, the number of the gas holes and gas branches ranges from 5 to 10.

[0010] Furthermore, a refractory material is coated on the lower surface of the roaster cover.

[0011] Furthermore, a lifting lug is provided on the upper surface of the roaster cover.

[0012] Furthermore, the lifting lug is connected to a lifting steel rope, and the lifting steel rope is connected to a hoist.

[0013] The beneficial effects of the utility model are:

[0014] The utility model provides a specially shaped roaster cover so that the roaster cover and the blast furnace swing nozzle form a combustion chamber for combustion in a small space, and air and coal gas are transported to the combustion chamber through a gas pipeline for full combustion, so that the combustion effect is better than that of coal gas directly burning in the air, thereby improving the combustion efficiency and reducing the consumption of coal gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the utility model or the technical solutions of the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 It is a schematic diagram of the structure of the utility model.

[0017] Description of Figure Numbers:

[0018] 1. Roaster cover; 2. Blast furnace swing nozzle; 3. Combustion chamber; 4. Air chamber; 5. Combustion-supporting fan; 6. Air outlet; 7. Gas main line; 8. Gas branch line; 9. Coke oven gas pipeline; 10. Lifting lug; 11. Lifting steel rope; 12. Elevator; 13. Burner. DETAILED DESCRIPTION

[0019] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0020] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means a limitation on the utility model and its application or use. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0021] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the utility model. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0022] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps described in these embodiments do not limit the scope of the utility model. At the same time, it should be clear that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to those of ordinary skill in the relevant field may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0023] In the description of the present utility model, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present utility model and simplifying the description. Unless otherwise stated, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present utility model: the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0024] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below their position devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0025] The utility model provides a technical solution: a device for baking a blast furnace nozzle, such as Figure 1 As shown, it includes a roaster cover 1, which is arranged on the upper part of the blast furnace swing nozzle 2, and the roaster cover 1 and the depression of the blast furnace swing nozzle 2 form a combustion chamber 3. The roaster cover 1 is hollow inside to form an air chamber 4, and the air chamber 4 is connected to a combustion-supporting fan 5. An air outlet 6 is opened on the lower surface of the roaster cover 1, and a gas main line 7 is arranged on the upper surface of the roaster cover 1. The gas main line 7 is connected to a plurality of gas branches 8. The roaster cover 1 is provided with a plurality of gas holes, and the gas branches 8 are arranged in the gas holes, and the gas main line 7 is connected to a coke oven gas pipeline 9. The lower end of the gas branch 8 protrudes from the lower surface of the roaster cover 1 and is located in the combustion chamber 3. The number of the gas holes and the gas branches 8 is five. The lower surface of the roaster cover 1 is coated with a refractory material for heat preservation and improving service life. The upper surface of the roaster cover 1 is provided with a lifting ear 10. The lifting lug 10 is connected to a lifting steel rope 11, and the lifting steel rope 11 is connected to a lift 12 on the ground for lifting and lowering the roaster cover. The arc of the concave part of the blast furnace swing nozzle 2 is the edge of a circle, and the direction of each gas branch 8 is the same as the radius of the circle.

[0026] The working process of the utility model is as follows: first, the elevator 12 is started to lift the roaster cover 1 through the lifting rope 11, and then the blast furnace swing nozzle 2 is transported to the bottom of the roaster cover 1, and then the elevator 12 is started to lower the roaster cover 1, so that the roaster cover 1 and the blast furnace swing nozzle 2 form a combustion chamber 3. Then the combustion-supporting fan 5 is started, so that the air is sent from the combustion-supporting fan 5 to the air chamber 4 and then sent into the combustion chamber 3 through the air outlet 6. The coke oven gas pipeline 9 sends the gas into the combustion chamber 3 after passing through the gas main line 7 and the gas branch line 8 in turn. The air and gas in the combustion chamber 3 are artificially ignited by the burner 13 for intense combustion. The combustion in a small space improves the combustion efficiency, reduces the leakage of gas, and saves energy. After the baking is completed, the combustion-supporting fan 5 and the coke oven gas pipeline 9 are turned off to supply gas. The elevator 12 is started to lift the roaster cover 1, and the blast furnace swing nozzle 2 that has been baked is transported away. The air pipeline and the gas pipeline of the utility model are both connected to an external interlocking device, which can automatically cut off when the pressure is low or the flame is turned off to protect the safety of the device and prevent the possibility of explosion.

[0027] The above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent substitutions or changes within the technical scope disclosed by the present invention according to the technical solution and inventive concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A device for baking a blast furnace nozzle, characterized in that: The invention comprises a roaster cover (1), wherein the roaster cover (1) is arranged on the upper part of a blast furnace swing nozzle (2), wherein the roaster cover (1) and the depression of the blast furnace swing nozzle (2) form a combustion chamber (3), wherein the roaster cover (1) is hollow inside to form an air chamber (4), wherein the air chamber (4) is connected to a combustion-supporting fan (5), wherein an air outlet (6) is provided on the lower surface of the roaster cover (1), wherein a main gas line (7) is provided on the upper surface of the roaster cover (1), wherein the main gas line (7) is connected to a plurality of gas branches (8), wherein a plurality of gas holes are provided through the roaster cover (1), wherein the gas branches (8) are provided in the gas holes, wherein the main gas line (7) is connected to a coke oven gas pipeline (9), and wherein a burner (13) is provided on the roaster cover (1).

2. The device for blast furnace nozzle baking according to claim 1, characterized in that: The lower end of the gas branch (8) protrudes from the lower surface of the roaster cover (1) and is located in the combustion chamber (3).

3. The device for blast furnace nozzle baking according to claim 1, characterized in that: The number of the gas holes and gas branches (8) ranges from 5 to 10.

4. The device for blast furnace nozzle baking according to claim 1, characterized in that: The lower surface of the roaster cover (1) is coated with refractory material.

5. The device for blast furnace nozzle baking according to claim 1, characterized in that: A lifting lug (10) is provided on the upper surface of the roaster cover (1).

6. The device for blast furnace nozzle baking according to claim 5, characterized in that: The lifting lug (10) is connected to a lifting steel rope (11), and the lifting steel rope (11) is connected to a hoist (12).

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