A device for rapidly treating the solidified layer of blast furnace tuyere and furnace hearth

Abstract

The utility model discloses a device for rapidly processing the solidified layer of the tuyere and furnace of a blast furnace, comprising a refractory material, a first steel pipe and a second steel pipe, wherein the first steel pipe is placed at the center of the refractory material, the second steel pipe is welded to one side of the first steel pipe, the second steel pipe passes through the refractory material and extends out, an oxygen inlet is arranged at one end of the first steel pipe, an air inlet is arranged at one end of the second steel pipe, and a cone is arranged on one side of the refractory material. When the blast furnace is stopped for a long time, the tuyere leaks a lot of water, the furnace is cold or even the furnace is frozen, the slag iron re-condensed between the tuyere and the furnace will be gradually heated and melted under the action of the device, and when it melts to a certain extent, the device is pulled out from the iron mouth, and the molten slag iron will flow out smoothly along the iron mouth, thereby achieving the designed effect.

Description

Technical Field

[0001] The utility model relates to the technical field of processing blast furnace tuyere, in particular to a device for rapidly processing blast furnace tuyere and a solidified layer of a furnace cylinder. Background Art

[0002] When the blast furnace is shut down for a long time, the tuyere leaks a lot of water, the furnace is cold or even the furnace is frozen, the slag iron that has melted at the front of the tuyere will re-condense between the tuyere and the furnace due to the sharp drop in temperature, which will prevent the hot air from entering the blast furnace smoothly. The molten iron on the upper part of the tuyere cannot flow into the furnace, and the slag iron in the furnace cannot be discharged normally from the iron mouth, which will directly cause the molten slag iron on the upper part to be blown out from the weakest tuyere, burning the tuyere small sleeve, direct blowing pipe and other equipment, and inducing major accidents. After adopting this device, the re-condensed slag iron between the tuyere and the furnace can be quickly melted so that it can be discharged smoothly from the iron mouth, avoiding the occurrence of major accidents. Utility Model Content

[0003] The purpose of the utility model is to provide a device for quickly processing the solidified layer of the tuyere and the hearth of a blast furnace to solve the problem proposed in the above-mentioned background technology that the molten iron on the upper part of the tuyere cannot flow into the hearth, and the slag iron in the hearth cannot be normally discharged from the iron mouth, which will directly cause the molten slag iron on the upper part to be blown out from the weakest tuyere, burn the tuyere small sleeve, direct blowing pipe and other equipment, and induce major accidents.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a device for quickly processing the solidified layer of the blast furnace tuyere and the hearth, comprising a refractory material, a first steel pipe and a second steel pipe, the first steel pipe is placed at the center of the refractory material, the second steel pipe is welded to one side of the first steel pipe, the second steel pipe passes through the refractory material and extends out, an oxygen inlet is provided at one end of the first steel pipe, an air inlet is provided at one end of the second steel pipe, and a cone is provided on one side of the refractory material.

[0005] Preferably, an oxygen regulating valve is provided on the first steel pipe, and an oxygen flow meter is provided on a side of the first steel pipe close to the oxygen regulating valve, and the oxygen flow meter detects the flow of oxygen.

[0006] Preferably, an air regulating valve is connected to one side of the second steel pipe, and an air flow meter is fixed on one side of the second steel pipe close to the air regulating valve, and the air flow meter detects the air flow.

[0007] Preferably, the first steel pipe is made of a seamless steel pipe, and the second steel pipe is also made of a seamless steel pipe.

[0008] Preferably, the first steel pipe and the second steel pipe are welded to each other, and the lengths of the first steel pipe and the second steel pipe are six thousand millimeters.

[0009] Preferably, the inner diameter of the first steel pipe is 70 mm and the wall thickness is 4.5 mm, and the inner diameter of the second steel pipe is 25 mm and the wall thickness is 4 mm.

[0010] Compared with the prior art, the utility model has the following beneficial effects: the device for rapidly treating the solidified layer of the blast furnace tuyere and the hearth has a reasonable structure and has the following advantages:

[0011] (1) By providing an oxygen inlet, an air inlet, a first steel pipe and a second steel pipe, the slag iron condensed between the tuyere and the iron mouth can be quickly processed, thereby avoiding serious accidents such as tuyere burn-through in the blast furnace and the economic losses caused by the shutdown of the blast furnace. Therefore, when the blast furnace is stopped for a long time, the tuyere leaks a lot of water, the furnace is cold or even the furnace cylinder is frozen, the slag iron re-condensed between the tuyere and the furnace cylinder will be gradually heated and melted under the action of the device. When it melts to a certain extent, the device is pulled out from the iron mouth, and the molten slag iron will flow out smoothly along the iron mouth, thereby achieving the designed effect.

[0012] (2) The ratio of air to oxygen can be adjusted by providing an air flow meter, an air regulating valve, an oxygen regulating valve and an oxygen flow meter to achieve different effects. Therefore, when in use, an air flow meter and an air regulating valve are provided on the second steel pipe, and an oxygen regulating valve and an oxygen flow meter are provided on the first steel pipe. The air flow meter detects the air flow, the oxygen flow meter detects the oxygen flow, the air regulating valve controls the air flow rate, and the oxygen regulating valve controls the oxygen flow rate. Thus, the ratio of air to oxygen can be adjusted by the interaction of the air flow meter, the air regulating valve, the oxygen regulating valve and the oxygen flow meter to achieve different effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a front view structural schematic diagram of the utility model;

[0014] Figure 2 It is a schematic diagram of the top view structure of the utility model;

[0015] Figure 3 It is a right side structural schematic diagram of the utility model;

[0016] Figure 4 It is a left side structural schematic diagram of the utility model.

[0017] In the figure: 1. oxygen inlet; 2. air inlet; 3. air flow meter; 4. air regulating valve; 5. oxygen regulating valve; 6. refractory material; 7. oxygen flow meter; 8. first steel pipe; 9. second steel pipe. DETAILED DESCRIPTION

[0018] The technical solutions 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. All other embodiments obtained by ordinary technicians in the field without creative work based on the embodiments of the utility model shall fall within the scope of protection of the utility model.

[0019] See also Figure 1-4 , the utility model provides an embodiment: a device for rapidly processing the solidified layer of the blast furnace tuyere and the hearth, comprising a refractory material 6, a first steel pipe 8 and a second steel pipe 9, the first steel pipe 8 is placed at the center of the refractory material 6, the second steel pipe 9 is welded to one side of the first steel pipe 8, the second steel pipe 9 passes through the refractory material 6 and extends out, an oxygen inlet 1 is arranged at one end of the first steel pipe 8, an air inlet 2 is arranged at one end of the second steel pipe 9, and a cone is arranged on one side of the refractory material 6;

[0020] When the blast furnace is out of service for a long time, the tuyere leaks a lot of water, the furnace is cold or even the furnace is frozen, the slag iron re-condensed between the tuyere and the furnace will be gradually heated and melted under the action of this device. When it melts to a certain degree, the device is pulled out from the iron mouth, and the molten slag iron will flow out smoothly along the iron mouth, thus achieving the designed effect;

[0021] An oxygen regulating valve 5 is provided on the first steel pipe 8, and an oxygen flow meter 7 is provided on one side of the first steel pipe 8 close to the oxygen regulating valve 5; an air regulating valve 4 is connected to one side of the second steel pipe 9, and an air flow meter 3 is fixed on one side of the second steel pipe 9 close to the air regulating valve 4;

[0022] The first steel pipe 8 is made of a seamless steel pipe, and the second steel pipe 9 is also made of a seamless steel pipe. The first steel pipe 8 and the second steel pipe 9 are welded to each other. The lengths of the first steel pipe 8 and the second steel pipe 9 are 6,000 mm. The inner diameter of the first steel pipe 8 is 70 mm, and the wall thickness is 4.5 mm. The inner diameter of the second steel pipe 9 is 25 mm, and the wall thickness is 4 mm.

[0023] The air flow rate is detected by the air flow meter 3, the oxygen flow rate is detected by the oxygen flow meter 7, the air flow rate is controlled by the air regulating valve 4, and the oxygen flow rate is controlled by the oxygen regulating valve 5, so that the ratio of air and oxygen is adjusted through the interaction of the air flow meter 3, the air regulating valve 4, the oxygen regulating valve 5 and the oxygen flow meter 7 to achieve different functions and effects;

[0024] When the embodiment of the present application is in use, after the device is manufactured, it is inserted into the furnace. When the blast furnace is out of service for a long time, the tuyere leaks a lot of water, the furnace is cold or even the furnace cylinder is frozen, the slag iron re-condensed between the tuyere and the furnace cylinder will be gradually heated and melted under the action of the device. When it melts to a certain extent, the device is pulled out from the iron mouth, and the molten slag iron will flow out smoothly along the iron mouth. The slag iron condensed between the tuyere and the iron mouth can be quickly processed to avoid major accidents such as tuyere burn-through in the blast furnace and the economic losses caused by the shutdown of the blast furnace. Then, an air flow meter 3 and an air regulating valve 4 are provided on the second steel pipe 9, and an oxygen regulating valve 5 and an oxygen flow meter 7 are provided on the first steel pipe 8. The air flow meter 3 detects the air flow, the oxygen flow meter 7 detects the oxygen flow, the air regulating valve 4 controls the air flow rate, and the oxygen regulating valve 5 controls the oxygen flow rate. The interaction of the air flow meter 3, the air regulating valve 4, the oxygen regulating valve 5 and the oxygen flow meter 7 adjusts the ratio of air and oxygen to achieve different functions and effects.

Claims

1. A device for rapidly treating the solidified layer of the blast furnace tuyere and furnace hearth, characterized in that: The invention comprises a refractory material (6), a first steel pipe (8) and a second steel pipe (9), wherein the first steel pipe (8) is placed at the center of the refractory material (6), the second steel pipe (9) is welded to one side of the first steel pipe (8), the second steel pipe (9) passes through the refractory material (6) and extends out, an oxygen inlet (1) is arranged at one end of the first steel pipe (8), an air inlet (2) is arranged at one end of the second steel pipe (9), and a cone is arranged on one side of the refractory material (6).

2. The device for rapidly treating the solidified layer of the blast furnace tuyere and the hearth according to claim 1, characterized in that: The first steel pipe (8) is provided with an oxygen regulating valve (5), and an oxygen flow meter (7) is provided on a side of the first steel pipe (8) close to the oxygen regulating valve (5).

3. The device for rapidly treating the solidified layer of the blast furnace tuyere and furnace according to claim 1, characterized in that: One side of the second steel pipe (9) is connected to an air regulating valve (4), and an air flow meter (3) is fixed to the side of the second steel pipe (9) close to the air regulating valve (4).

4. The device for rapidly treating the solidified layer of the blast furnace tuyere and hearth according to claim 1, characterized in that: The first steel pipe (8) is made of a seamless steel pipe, and the second steel pipe (9) is also made of a seamless steel pipe.

5. The device for rapidly treating the solidified layer of the blast furnace tuyere and furnace according to claim 1 is characterized in that: The first steel pipe (8) and the second steel pipe (9) are welded to each other, and the lengths of the first steel pipe (8) and the second steel pipe (9) are six thousand millimeters.

6. The device for rapidly treating the solidified layer of the tuyere and hearth of a blast furnace according to claim 1, characterized in that: The inner diameter of the first steel tube (8) is 70 mm and the wall thickness is 4.5 mm. The inner diameter of the second steel tube (9) is 25 mm and the wall thickness is 4 mm.

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