Slag flushing device for blast furnace

Abstract

The utility model relates to the technical field of blast furnaces, in particular to a blast furnace slag flushing device which comprises a slag flushing box, a slag runner box is fixedly connected to the top of one side wall of the slag flushing box, the inner bottom wall of the slag runner box is obliquely arranged, a plurality of slag control assemblies are arranged on the inner bottom wall of the slag runner box at equal intervals, a slag flushing groove is formed in the bottom of an inner cavity of the slag flushing box, and the slag flushing groove is communicated with the slag runner box. The slag flushing device comprises a slag flushing box, a slag flushing assembly is arranged at the top of an inner cavity of the slag flushing box, the top wall of the slag flushing box is fixedly connected with a water spraying box in a penetrating mode, the bottom of the water spraying box is of an opening structure, and a water spraying assembly is arranged in an inner cavity of the water spraying box. Therefore, excessive accumulation and blockage of slag are not prone to being caused, subsequent slag flushing treatment is guaranteed, the auxiliary capacity of the slag flushing assembly is good, the slag flushing assembly is not prone to being damaged due to the high temperature of blast furnace slag, the slag flushing assembly can be assisted in slag flushing, and the slag flushing effect is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of blast furnaces, in particular to a blast furnace slag flushing device. Background Art

[0002] The blast furnace is one of the most important equipment in the steel industry. It is used to reduce iron ore into iron. The structure of the blast furnace consists of a furnace hearth, a furnace body, a furnace throat and a tuyere. The production process of the blast furnace is to put iron ore, coke and limestone into the furnace hearth in a certain proportion, and then introduce hot air and reducing gas through the tuyere to make the temperature in the furnace reach above 1500 degrees Celsius, and the iron ore is reduced to iron. The iron produced by the blast furnace usually contains more carbon and other impurities, and needs further processing to become steel. The production efficiency and quality of the blast furnace are affected by many factors, such as the quality of the charge, the quality and quantity of hot air and reducing gas, the temperature and pressure in the furnace, etc. Therefore, the production of the blast furnace requires strict control of various parameters to ensure the quality and efficiency of the iron produced. In addition to the steel industry, blast furnaces are also used in other industrial fields, such as the non-ferrous metal industry, the chemical industry, etc. The emergence and development of blast furnaces have greatly promoted the progress of industry and the development of society.

[0003] Slag flushing is an important process in the blast furnace production process, so a slag flushing device is needed. Although the traditional slag flushing device has a certain slag flushing capacity, it still has some shortcomings. For example, it is difficult to control the flow rate of slag when the blast furnace is slag discharge, so it is easy to cause excessive accumulation and blockage of slag, thereby affecting the subsequent slag flushing treatment, and its auxiliary ability for slag flushing components is poor. Therefore, not only is it easy for the slag flushing components to be damaged due to the high temperature of blast furnace slag discharge, but it is also difficult to ensure the slag flushing effect by simply flushing through the slag flushing component. Therefore, a blast furnace slag flushing device is proposed to address the above problems. Utility Model Content

[0004] The purpose of the utility model is to provide a blast furnace slag flushing device, which can control the flow rate of slag when the blast furnace is slag discharge, so it is not easy for the slag to cause excessive accumulation and blockage, thereby ensuring the subsequent slag flushing treatment, and it has good auxiliary ability for the slag flushing component, so not only is it not easy for the slag flushing component to be damaged due to the high temperature of blast furnace slag discharge, but it can also assist the slag flushing component to flush the slag to ensure the slag flushing effect, so as to solve the problems raised in the above-mentioned background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A blast furnace slag flushing device comprises a slag flushing box, a slag ditch box is fixedly connected to the top of one side wall of the slag flushing box, a slag guiding pipe is penetrated and connected to the side of the top of the slag ditch box away from the slag flushing box, the inner bottom wall of the slag ditch box is inclined, and a plurality of slag control components are arranged at equal intervals on the inner bottom wall of the slag ditch box, a slag flushing groove is provided at the bottom of the inner cavity of the slag flushing box, a slag flushing component is provided at the top of the inner cavity of the slag flushing box, a water spray box with an open bottom structure is penetrated and fixedly connected to the top wall of the slag flushing box, and a water spray component is provided in the inner cavity of the water spray box.

[0007] Preferably, the inner bottom wall of the slag ditch box is inclined higher at one end away from the slag flushing box, and a slag guiding groove corresponding to the inclined lower end of the inner bottom wall of the slag ditch box is provided on one side wall of the slag flushing box close to the slag ditch box.

[0008] Preferably, the slag control assembly includes a limit slot opened on the inner bottom wall of the slag ditch box and a slag control protrusion arranged above the limit slot, and the bottom of the slag control protrusion is fixedly connected to a limit block corresponding to the position of the limit slot and matching the specifications.

[0009] Preferably, the slag flushing assembly comprises symmetrically arranged support rods with one end fixedly connected to both ends of the inner top wall of the slag flushing box, a slag flushing pipe is provided between the two support rods, and a plurality of slag flushing nozzles are arranged at equal intervals at the bottom of the slag flushing pipe.

[0010] Preferably, a booster slag flushing pump is fixedly connected to the rear wall of the slag flushing box via a fixed bracket, the input end of the booster slag flushing pump is connected to an external water source, the output end of the booster slag flushing pump is connected to a slag flushing conduit, and the end of the slag flushing conduit away from the booster slag flushing pump passes through the rear wall of the slag flushing box and this end is connected to the slag flushing pipe.

[0011] Preferably, the water spray assembly includes a water pipe arranged at the top of the inner cavity of the water spray box, the input end of the water pipe passes through the top wall of the water spray box and this end is connected to an external water source, and flushing water nozzles equal in number and corresponding in position to the slag flushing nozzles are arranged equidistantly below and connected to the water pipe.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] In the utility model, the slag ditch box provided can receive blast furnace slag and transfer the slag to the slag flushing box, the slag control component provided can control the flow rate of the slag, so it is not easy for the slag to cause excessive accumulation and blockage, thereby ensuring the subsequent slag flushing treatment, the slag guiding groove provided can make the blast furnace slag be introduced into the slag flushing box after the flow rate is controlled by the slag control component, the slag can be accommodated by the provided slag flushing groove, and the slag can be flushed by the provided slag flushing component, so that the slag can be quickly cooled and solidified, so as to facilitate the subsequent treatment and utilization of the slag, and the water spraying component provided can provide good auxiliary capacity for the slag flushing component, so that it can not only cool the slag flushing component to prevent the slag flushing component from being damaged due to the high temperature of the blast furnace slag, but also assist the slag flushing component in flushing the slag to ensure the slag flushing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the utility model;

[0015] Figure 2 It is a schematic diagram of the lateral structure of the utility model;

[0016] Figure 3 For the utility model Figure 1 A magnified image of point A;

[0017] Figure 4 For the utility model Figure 3 Schematic diagram of the decomposition.

[0018] In the figure: 1. slag flushing box; 2. slag ditch box; 3. slag guide pipe; 4. limit slot; 5. slag control protrusion; 6. limit block; 7. slag guide slot; 8. slag flushing chute; 9. support rod; 10. slag flushing pipe; 11. slag flushing nozzle; 12. booster slag flushing pump; 13. slag flushing conduit; 14. water spray box; 15. water guide pipe; 16. water flushing nozzle. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions 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. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] 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, and are only for the convenience of describing the present utility model and simplifying the description. Unless otherwise specified, 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, and therefore 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.

[0021] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the utility model.

[0022] See also Figure 1-4 , the utility model provides a technical solution:

[0023] A blast furnace slag flushing device comprises a slag flushing box 1, a slag ditch box 2 is fixedly connected to the top of one side wall of the slag flushing box 1, a slag guiding pipe 3 is penetrated and connected to the side of the top of the slag ditch box 2 away from the slag flushing box 1, the inner bottom wall of the slag ditch box 2 is inclined, and a plurality of slag control components are arranged at equal intervals on the inner bottom wall of the slag ditch box 2, a slag flushing groove 8 is provided at the bottom of the inner cavity of the slag flushing box 1, a slag flushing component is provided at the top of the inner cavity of the slag flushing box 1, a water spray box 14 with an open bottom structure is penetrated and fixedly connected to the top wall of the slag flushing box 1, and a water spray component is provided in the inner cavity of the water spray box 14.

[0024] The slag control component includes a limit card slot 4 provided on the inner bottom wall of the slag ditch box 2 and a slag control protrusion 5 provided above the limit card slot 4. The bottom of the slag control protrusion 5 is fixedly connected with a limit card block 6 corresponding to the position of the limit card slot 4 and matching the specifications. The slag control component can control the flow rate of the slag, so it is not easy for the slag to cause excessive accumulation and blockage, thereby ensuring the subsequent slag flushing treatment; the end of the inner bottom wall of the slag ditch box 2 away from the slag flushing box 1 is inclined higher, and a slag guiding groove 7 corresponding to the inclined lower end position of the inner bottom wall of the slag ditch box 2 is provided on the side wall of the slag flushing box 1 close to the slag ditch box 2. The slag guiding groove 7 can guide the blast furnace slag into the slag flushing box 1 after the flow rate is controlled by the slag control component; the slag flushing component includes a symmetrically arranged support rod 9 and one end of which is fixedly connected to the two ends of the inner top wall of the slag flushing box 1. A slag flushing pipe 10 is provided between the two support rods 9. The bottom of the slag flushing pipe 10 is equidistantly arranged and connected to a plurality of slag flushing nozzles 11. The rear wall of the slag flushing box 1 is fixedly connected to the rear wall of the slag flushing box 1. The fixed bracket is fixedly connected with a booster slag flushing pump 12, the input end of the booster slag flushing pump 12 is connected to an external water source, and the output end of the booster slag flushing pump 12 is connected to a slag flushing conduit 13, the end of the slag flushing conduit 13 away from the booster slag flushing pump 12 passes through the rear wall of the slag flushing box 1 and this end is connected to the slag flushing pipe 10, the slag flushing component can perform slag flushing treatment on the slag so that the slag can be quickly cooled and solidified, so as to facilitate the subsequent treatment and utilization of the slag; the water spraying component includes a water pipe 15 arranged at the top of the inner cavity of the water spraying box 14, the input end of the water pipe 15 passes through the top wall of the water spraying box 14 and this end is connected to an external water source, and water flushing nozzles 16 equal in number and corresponding in position to the slag flushing nozzles 11 are arranged equidistantly below the water pipe 15 and are connected, the water spraying component can provide good auxiliary capacity for the slag flushing component, so it can not only cool the slag flushing component to prevent the slag flushing component from being damaged by the high temperature of blast furnace slag discharge, but also assist the slag flushing component in slag flushing to ensure the slag flushing effect.

[0025] Working process: blast furnace slag is introduced into the slag ditch box 2 through the slag guiding pipe 3 and falls to the inner bottom wall of the slag ditch box 2. Its inclined setting makes the slag flow in the direction of the slag guiding groove 7 and pass through the slag controlling component during the flow. The slag controlling component can control the flow rate of the slag, so it is not easy for the slag to cause excessive accumulation and blockage, thereby ensuring the subsequent slag flushing treatment. The slag will be blocked and slowed down when passing through the slag controlling protrusion 5, so it will maintain a stable and appropriate flow rate when passing through multiple slag controlling protrusions 5. Moreover, since the slag controlling protrusion 5 is connected with the limiting groove 4 through the limiting block 6, the slag controlling protrusion 5 with a suitable protrusion height can be selected according to the required slag flow rate, thereby providing a more flexible slag control capability. The slag guiding groove 7 can make the blast furnace slag be guided into the slag flushing box 1 and fall into the slag flushing groove 8 after the flow rate is controlled by the slag controlling component. The slag component can perform slag flushing treatment on the slag so that the slag can be quickly cooled and solidified, so as to facilitate the subsequent treatment and utilization of the slag. The booster slag flushing pump 12 will draw in an external water source and guide it into the slag flushing pipe 10, and finally spray it out through the slag flushing nozzle 11 to perform slag flushing treatment on the slag. The setting of the booster slag flushing pump 12 can effectively increase the pressure of the slag flushing nozzle 11. At the same time, the water spraying component can provide good auxiliary capabilities for the slag flushing component. Therefore, it can not only cool the slag flushing component to prevent the slag flushing component from being damaged by the high temperature of blast furnace slag discharge, but also assist the slag flushing component in slag flushing to ensure the slag flushing effect. The water guide pipe 15 will draw in an external water source and finally spray it out through the water flushing nozzle 16. The water sprayed from the water flushing nozzle 16 will first act on the slag flushing nozzle 11 to cool it, and then act on the slag to assist the slag flushing component in slag flushing.

[0026] The contents not described in detail in this specification belong to the prior art known to the professional and technical personnel in this field. The standard parts used in this utility model can be purchased from the market, and the special-shaped parts can be customized according to the description and the drawings. The specific connection methods of each part adopt the conventional means such as bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt the conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here.

[0027] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A blast furnace slag flushing device, comprising a slag flushing box (1), characterized in that: A slag ditch box (2) is fixedly connected to the top of one side wall of the slag flushing box (1); a slag guide pipe (3) is penetrated and connected to the side of the top of the slag ditch box (2) away from the slag flushing box (1); the inner bottom wall of the slag ditch box (2) is inclined; a plurality of slag control components are arranged at equal intervals on the inner bottom wall of the slag ditch box (2); a slag flushing groove (8) is provided at the bottom of the inner cavity of the slag flushing box (1); a slag flushing component is provided at the top of the inner cavity of the slag flushing box (1); a water spray box (14) with an open bottom structure is penetrated and fixedly connected to the top wall of the slag flushing box (1); a water spray component is provided in the inner cavity of the water spray box (14).

2. A blast furnace slag flushing device according to claim 1, characterized in that: The slag control component comprises a limit card slot (4) provided on the inner bottom wall of the slag ditch box (2) and a slag control protrusion (5) arranged above the limit card slot (4), and the bottom of the slag control protrusion (5) is fixedly connected to a limit card block (6) corresponding to the position of the limit card slot (4) and matching the specifications.

3. A blast furnace slag flushing device according to claim 1, characterized in that: The inner bottom wall of the slag ditch box (2) is arranged at an inclined higher end away from the slag flushing box (1), and a slag guiding groove (7) corresponding to the inclined lower end of the inner bottom wall of the slag ditch box (2) is provided on a side wall of the slag flushing box (1) close to the slag ditch box (2).

4. A blast furnace slag flushing device according to claim 1, characterized in that: The slag flushing assembly comprises support rods (9) which are symmetrically arranged and one end of which is fixedly connected to both ends of the inner top wall of the slag flushing box (1); a slag flushing pipe (10) is arranged between the two support rods (9); and a plurality of slag flushing nozzles (11) are arranged at equal intervals at the bottom of the slag flushing pipe (10) and connected thereto.

5. A blast furnace slag flushing device according to claim 4, characterized in that: A booster slag flushing pump (12) is fixedly connected to the rear wall of the slag flushing box (1) via a fixed bracket; the input end of the booster slag flushing pump (12) is connected to an external water source; the output end of the booster slag flushing pump (12) is connected to a slag flushing conduit (13); one end of the slag flushing conduit (13) away from the booster slag flushing pump (12) passes through the rear wall of the slag flushing box (1) and this end is connected to the slag flushing pipe (10).

6. A blast furnace slag flushing device according to claim 4, characterized in that: The water spray assembly comprises a water pipe (15) arranged at the top of the inner cavity of the water spray box (14), the input end of the water pipe (15) passes through the top wall of the water spray box (14) and is connected to an external water source, and flushing water nozzles (16) equal in number and corresponding in position to the slag flushing nozzles (11) are arranged equidistantly below the water pipe (15) and are connected.

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