Slag hole slag fluid director

Abstract

The utility model relates to the technical field of blast furnace processing, in particular to a slag hole slag deflector which comprises a water-cooling deflector body, the water-cooling deflector body comprises a front end part, a rear end part and a middle inclined part, and a diversion cavity is arranged in the water-cooling deflector body; the rear end section is connected with the discharging end of the slag blocking machine, and a first water cooling structure is arranged on the rear end section; the front end section is connected with a blast furnace slag hole; the two ends of the middle inclined section are connected with the rear end section and the front end section correspondingly, a second water cooling structure is arranged on the middle inclined section, and the first water cooling structure communicates with the second water cooling structure; the water-cooling fluid director structure capable of replacing a mud sleeve at the slag hole of the blast furnace is provided, the service life of the water-cooling fluid director structure is more than 30 days, mud sleeve mud is not consumed any more, the labor cost for manufacturing the mud sleeve per shift is reduced, the labor intensity of workers is reduced, and the personal safety of the workers is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of blast furnace processing, in particular to a slag mouth molten slag deflector. Background Art

[0002] The main products of blast furnace ironmaking are hot liquid iron and slag. During production, most blast furnaces discharge both hot liquid iron and slag from the taphole, using a slag skimmer to remove the slag floating above the molten iron. However, a considerable number of small and medium-sized blast furnace companies still use the slag spout during the tapping process. The main reasons for this are as follows:

[0003] (1) The scouring and erosion effect of slag on the taphole is stronger than that of molten iron. The discharge of part of the slag from the slag mouth can reduce the working intensity of the taphole, which is conducive to maintaining a good taphole working condition and ensuring the safety of the ironmaking production process;

[0004] (2) It can reduce the amount of iron carried by the slag. The high-temperature liquid iron and slag are discharged from the taphole. Since the molten iron and slag are mixed during the discharge process, the amount of iron carried by the slag will inevitably increase, resulting in an increase in the metal loss rate during the ironmaking production process.

[0005] (3) Due to the influence of market and resource factors, in order to reduce production costs, smelting enterprises have recently shown a trend of inferior raw materials for blast furnace production, and the grade of raw materials entering the furnace has generally decreased. The grade of raw materials entering the furnace of most small and medium-sized blast furnaces is even lower, and the amount of smelting slag is large, so they have to retain the slag placement operation.

[0006] The existing technology mainly uses water-soaked mud to manufacture slag hole mud sleeves. That is, water-soaked mud is injected into the blast furnace slag hole through a mud gun to form a slag hole mud sleeve with water-soaked mud on the inner surface of each slag hole sleeve of the blast furnace. However, the slag hole mud sleeves manufactured using water-soaked mud have the following shortcomings:

[0007] (1) The service life of the slag mouth mud sleeve made of water cannon mud is short, generally 8h to 16h;

[0008] (2) Frequent use of water-filled cannon mud to make slag mouth mud sleeves increases the labor intensity of on-site workers;

[0009] (3) The use of water-soaked cannon mud to manufacture the slag mouth mud sleeve requires a large amount of water-soaked cannon mud, which increases the production cost.

[0010] The Chinese patent with announcement number CN104087695B provides a three-section casing structure for a blast furnace slag mouth mud sleeve, which improves the strength of the blast furnace slag mouth mud sleeve and its ability to resist scouring by blast furnace slag to a certain extent. However, its overall service life is still 8 hours to 16 hours. The blast furnace slag mouth mud sleeve slowly burns during the slag discharge process, and the slag mouth mud sleeve must be remade with mud every 8 hours, and the maintenance frequency is still relatively high. Utility Model Content

[0011] In view of the above problems, the utility model provides a slag mouth molten slag deflector.

[0012] The adopted technical solution is: a slag mouth slag deflector, comprising a water-cooled deflector body, wherein the water-cooled deflector body comprises a front end portion, a rear end portion and a middle inclined portion, and a deflection cavity is provided in the water-cooled deflector body;

[0013] The rear end section is connected to the discharge end of the slag blocking machine, and a first water cooling structure is provided on the rear end section;

[0014] The front end section is connected to the blast furnace slag outlet;

[0015] The two ends of the middle inclined section are connected to the rear end section and the front end section respectively, and a second water cooling structure is provided on the middle inclined section, and the first water cooling structure is connected to the second water cooling structure;

[0016] The guide cavity connects the discharge end of the slag blocking machine with the blast furnace slag outlet.

[0017] Optionally, the middle inclined section is inclined downward from the front end section toward the rear end section.

[0018] Optionally, the first water-cooling structure includes a first liquid infusion pipe and a first water-cooling cavity, and the second water-cooling structure includes a second liquid infusion pipe and a second water-cooling cavity.

[0019] Optionally, the first liquid infusion pipe is provided on the middle inclined section and faces the rear end section, and the first liquid infusion pipe is connected to the first water-cooling cavity;

[0020] The first water-cooling cavity is arranged in the middle inclined section and communicates with the second water-cooling cavity;

[0021] The second liquid infusion pipe is arranged on the rear end section and away from the middle inclined section, and the second liquid infusion pipe is connected to the second water-cooling cavity;

[0022] The second water-cooling cavity is arranged in the rear end section.

[0023] Optionally, the first infusion pipe is used for inputting the water-cooling liquid, and the second infusion pipe is used for outputting the water-cooling liquid.

[0024] Optionally, the first infusion pipe is used for outputting the water-cooling liquid, and the second infusion pipe is used for inputting the water-cooling liquid.

[0025] Optionally, a concave platform is provided on the top of the rear end section, and the concave platform exposes the guide cavity.

[0026] Optionally, a groove is provided at the top of the front end section, and the external pipeline can be inserted into the groove.

[0027] The benefits of this utility model include:

[0028] 1. A water-cooled deflector structure is provided that can replace the blast furnace slag hole mud sleeve. The service life is more than 30 days, and the mud sleeve mud is no longer consumed, which reduces the labor cost of making the mud sleeve per shift, reduces the labor intensity of workers, and improves the personal safety of operators.

[0029] 2. It solves the problem that the overall service life of the existing blast furnace slag mouth mud sleeve is still 8h to 16h, the blast furnace slag mouth mud sleeve slowly burns during the slag discharge process, and the slag mouth mud sleeve must be remade with mud every 8 hours, and the maintenance frequency is still high. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a schematic diagram of the structure of a slag mouth slag deflector;

[0031] Figure 2 This is a schematic diagram of the internal structure of a slag mouth slag deflector;

[0032] Figure 3 A schematic diagram of the internal structure of a slag deflector at a slag mouth from another perspective;

[0033] Figure 4 This is a schematic diagram of the end structure of a slag mouth slag deflector;

[0034] Figure 5 This is a schematic diagram of the installation structure of a slag mouth slag deflector;

[0035] Figure 6 Schematic diagram of the interior of the blast furnace slag mouth.

[0036] The figure marks are: 1 is the water-cooled deflector body, 101 is the front end, 102 is the middle inclined part, 103 is the rear end, 2 is the deflection cavity, 3 is the concave platform, 4 is the first liquid infusion pipe, 5 is the second liquid infusion pipe, 6 is the groove, 7 is the slag blocking machine, 8 is the blast furnace slag mouth, 9 is the external pipeline, and 10 is the refractory filler. DETAILED DESCRIPTION

[0037] The following describes the implementation of the present invention through specific examples. Those skilled in the art will readily understand the other advantages and benefits of the present invention from the disclosure herein. The present invention may also be implemented or applied through various other specific implementations, and the details in this specification may be modified or altered based on different perspectives and applications without departing from the spirit of the present invention. It should be noted that the following embodiments and features within these embodiments may be combined unless they conflict.

[0038] It should be noted that the illustrations provided in the following embodiments are merely schematic illustrations of the basic concept of the present invention. Therefore, the illustrations only show components related to the present invention and are not drawn according to the number, shape, and size of components in actual implementation. In actual implementation, the type, quantity, and proportion of each component may be changed arbitrarily, and the component layout may also be more complex.

[0039] like Figures 1 to 4 As shown, a slag deflector for slag mouth includes a water-cooled deflector body 1, wherein the water-cooled deflector body 1 includes a front end portion 101, a rear end portion 103 and a middle inclined portion 102, and a deflector cavity 2 is provided in the water-cooled deflector body 1;

[0040] The rear end section 103 is connected to the discharge end of the slag blocking machine 7, and a first water cooling structure is provided on the rear end section 103;

[0041] The front end section 101 is connected to the blast furnace slag outlet 8;

[0042] The two ends of the middle inclined section 102 are connected to the rear end section 103 and the front end section 101 respectively. The middle inclined section 102 is provided with a second water cooling structure, and the first water cooling structure is connected to the second water cooling structure.

[0043] The guide cavity 2 connects the discharge end of the slag blocking machine 7 and the blast furnace slag outlet 8 .

[0044] This design aims to provide a water-cooled deflector structure that can replace the blast furnace slag hole mud sleeve. It boasts a service life of over 30 days, eliminates mud sleeve consumption, reduces the labor cost of making the sleeve per shift, reduces worker intensity, and improves worker safety. This solves the problem of existing blast furnace slag hole mud sleeves, which have a lifespan of 8 to 16 hours and slowly erode during the slag discharge process, requiring them to be replaced with new mud every 8 hours, resulting in a high maintenance frequency.

[0045] It should be pointed out that in actual production, heat-conducting and wear-resistant copper is used inside the guide cavity, red copper is used outside the water-cooled guide body, and the medium temperature is less than 1600℃.

[0046] In this embodiment, the middle inclined section 102 is inclined downward from the front section 101 toward the rear section 103 .

[0047] The purpose of this design is to use an inclined manner so that it is parallel to the slope of the blast furnace slag mouth, which is convenient for overall installation.

[0048] In this embodiment, the first water-cooling structure includes a first liquid infusion pipe 4 and a first water-cooling cavity, and the second water-cooling structure includes a second liquid infusion pipe 5 and a second water-cooling cavity.

[0049] The first liquid infusion tube 4 is provided on the middle inclined section 102 and faces the rear end section 103. The first liquid infusion tube 4 is connected to the first water-cooling cavity.

[0050] The first water-cooling cavity is disposed in the middle inclined section 102 and communicates with the second water-cooling cavity;

[0051] The second liquid infusion pipe 5 is provided on the rear end section 103 and away from the middle inclined section 102 , and the second liquid infusion pipe 5 is connected to the second water-cooling cavity;

[0052] The second water-cooling cavity is disposed in the rear end section 103 .

[0053] The purpose of this design is to be able to input / output cold liquid through the first and second infusion pipes, and to temporarily store the cold liquid through the first water-cooling cavity and the second water-cooling cavity so that it can complete heat exchange with the water-cooled deflector body, thereby cooling down and increasing service life, and finally discharged.

[0054] In this embodiment, one cooling liquid flow mode is that the first infusion tube 4 is used for water-cooling liquid input, and the second infusion tube 5 is used for water-cooling liquid output; another cooling liquid flow mode is that the first infusion tube 4 is used for water-cooling liquid output, and the second infusion tube 5 is used for water-cooling liquid input.

[0055] like Figure 5 and Figure 6 As shown, during the actual installation process, a recessed platform 3 is provided on the top of the rear end section 103 , and the recessed platform 3 exposes the guide cavity 2 , and a groove 6 is provided on the top of the front end section 101 , and the external pipeline 9 can be inserted from the groove 6 .

[0056] It should be noted that in actual use, additional refractory filler is typically installed at the bottom of the water-cooled deflector body for protection. Flood cooling ensures proper cooling of the cavity without vapor resistance. The nominal design pressure of the slag deflector cooling cavity is 2.0 MPa, and the cooling water pressure is 0.8 MPa.

[0057] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for the various technical features thereof. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A slag hole slag deflector, comprising a water-cooled deflector body (1), characterized in that: The water-cooled deflector body (1) comprises a front end portion (101), a rear end portion (103) and a middle inclined portion (102); a deflector cavity (2) is provided in the water-cooled deflector body (1); The rear end section (103) is connected to the discharge end of the slag blocking machine (7), and a first water cooling structure is provided on the rear end section (103); The front end section (101) is connected to the blast furnace slag outlet (8); The two ends of the middle inclined section (102) are respectively connected to the rear end section (103) and the front end section (101); a second water cooling structure is provided on the middle inclined section (102), and the first water cooling structure is communicated with the second water cooling structure; The guide cavity (2) connects the discharge end of the slag blocking machine (7) and the blast furnace slag outlet (8).

2. The slag deflector according to claim 1, characterized in that: The middle inclined section (102) is inclined downward from the front section (101) toward the rear section (103).

3. The slag deflector at a slag hole according to claim 1, characterized in that: The first water-cooling structure comprises a first liquid infusion pipe (4) and a first water-cooling cavity, and the second water-cooling structure comprises a second liquid infusion pipe (5) and a second water-cooling cavity.

4. The slag deflector of claim 3, characterized in that: The first liquid infusion tube (4) is arranged on the middle inclined section (102) and faces the rear end section (103), and the first liquid infusion tube (4) is connected to the first water-cooling cavity; The first water-cooling cavity is arranged in the middle inclined section (102) and is in communication with the second water-cooling cavity; The second liquid infusion pipe (5) is arranged on the rear end section (103) and away from the middle inclined section (102), and the second liquid infusion pipe (5) is connected to the second water-cooling cavity; The second water-cooling cavity is arranged in the rear end section (103).

5. The slag mouth slag deflector according to claim 4, characterized in that: The first liquid infusion pipe (4) is used for inputting water-cooling liquid, and the second liquid infusion pipe (5) is used for outputting water-cooling liquid.

6. The slag deflector at a slag hole according to claim 4, characterized in that: The first liquid infusion pipe (4) is used for outputting water-cooling liquid, and the second liquid infusion pipe (5) is used for inputting water-cooling liquid.

7. A slag hole slag deflector according to claim 5 or 6, characterized in that: A concave platform (3) is provided on the top of the rear end section (103), and the concave platform (3) exposes the guide cavity (2).

8. The slag hole slag deflector according to claim 7, characterized in that: A groove (6) is provided at the top of the front end section (101), and the external pipeline (9) can be inserted into the groove (6).

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