Slag stopping device of nozzle brick converter

Abstract

The utility model discloses a slag stopping device of a nozzle brick converter. The slag stopping device comprises a converter, a tapping hole is formed in the bottom of the converter; the tapping hole is filled with a slag stopping plug; one side of the converter is rotationally connected with a guide mechanism; the guide mechanism is over against the tapping hole after being turned over; and the slag stopping plug is put into the tapping hole through a guide mechanism. According to the utility model, through the designed guide mechanism, accurate and rapid feeding of the slag stopping plug is realized; the guide mechanism can be overturned to the position right opposite to the tapping hole, so that the slag stopping plug can accurately fall into the tapping hole at the optimal time and the optimal angle, slag is effectively prevented from flowing out along with molten steel, and the slag stopping efficiency and the molten steel quality are remarkably improved.

Description

Technical Field

[0001] The utility model relates to the technical field of metallurgy, in particular to a slag blocking device for a nozzle brick converter. Background Art

[0002] In the steelmaking industry, the converter, as the primary smelting equipment, undertakes the crucial task of converting molten iron into molten steel. However, during the converter tapping process, the incorporation of slag has always been a key factor affecting molten steel quality. Slag not only contains a high level of impurities but also reduces the purity of the molten steel, impacting subsequent processing and the final product properties. Therefore, effectively preventing slag from escaping with the molten steel has become a pressing technical challenge in the steelmaking industry.

[0003] Traditional slag blocking methods rely primarily on manual labor, using tools like slag blocking plates and balls. However, these methods have numerous drawbacks, including complex operation, low efficiency, and unstable slag blocking. Especially in the high-temperature, high-pressure environment of converters, manual operation is not only labor-intensive but also poses safety risks.

[0004] To overcome the shortcomings of traditional slag-blocking methods, the industry has recently begun exploring automated and intelligent slag-blocking technologies. Among these technologies, a slag-blocking device based on a sprue brick converter has gained increasing attention. This device utilizes a tapping hole at the bottom of the converter and a slag plug inserted into the hole to prevent slag from flowing out. However, early sprue brick converter slag-blocking devices still faced several design and application challenges.

[0005] First, the placement of the slag stopper is not flexible and accurate enough. The complex internal environment of the converter, coupled with unfavorable factors such as high temperature and high pressure, makes the placement of the slag stopper difficult. If the placement is inaccurate, not only will the slag not be effectively blocked, but it may also damage the converter and molten steel.

[0006] Secondly, the design of the guide mechanism was not rational. Early guide mechanisms often used simple mechanical structures, such as slide rails directly fixed to the converter. This design not only limited the angle and position of the slag stopper, but also easily deformed due to heat, affecting the guiding effect.

[0007] Therefore, it is necessary to design a nozzle brick converter slag blocking device to solve the above problems. Utility Model Content

[0008] The purpose of the utility model is to address the deficiencies of the prior art and to provide a slag blocking device for a nozzle brick converter.

[0009] The technical solution of the utility model is: a slag blocking device for a nozzle brick converter, comprising a converter; a steel outlet is provided at the bottom of the converter; a slag blocking plug is filled in the steel outlet; a guide mechanism is rotatably connected to one side of the converter; the guide mechanism is turned over to face the steel outlet; the slag blocking plug is put into the steel outlet through the guide mechanism.

[0010] The guide mechanism comprises an articulated seat and a guide sleeve; the articulated seat is fixed to the top of the converter; and the guide sleeve is hinged to the articulated seat through a connecting rod.

[0011] The end of the connecting rod is provided with a clamp; the guide sleeve is fixed on the connecting rod through the clamp.

[0012] A guide platform is provided on the top of the slag blocking plug; the guide platform is slidably connected to the inner wall of the guide sleeve.

[0013] A plurality of notches are evenly distributed along the circumferential direction on the side wall of the guide platform.

[0014] The bottom of the converter is funnel-shaped.

[0015] The guide sleeve is made of high-temperature resistant material.

[0016] By adopting the above technical solution, the utility model has the following beneficial effects: (1) The utility model realizes the accurate and rapid insertion of the slag stopper through the designed guide mechanism; the guide mechanism can be flipped to a position facing the steel outlet, ensuring that the slag stopper accurately falls into the steel outlet at the best time and the best angle, effectively preventing the slag from flowing out with the molten steel, and significantly improving the slag stopping efficiency and the quality of the molten steel.

[0017] (2) The guide mechanism of the present invention adopts a combination design of an articulated seat and a guide sleeve, which is hinged to the top of the converter through a connecting rod. The structure is stable and easy to operate. At the same time, the guide sleeve is made of high-temperature resistant material and can withstand the high temperature environment inside the converter, ensuring the stability and durability of the device during long-term operation.

[0018] (3) The clamp design at the end of the connecting rod of the utility model enables the guide sleeve to be easily fixed on the connecting rod, and also facilitates subsequent maintenance and replacement.

[0019] (4) The design of the guide platform of the present invention ensures that the slag stopper can slide stably inside the guide sleeve, ensuring that the slag stopper can smoothly enter the steel outlet.

[0020] (5) The bottom of the converter of the utility model is designed in a funnel shape, which helps to separate the molten steel and the slag, and further improves the slag blocking efficiency; at the same time, this design also optimizes the outflow path of the molten steel, reduces the resistance of the molten steel during the steel-making process, and improves the steel-making efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to make the contents of the present invention more clearly understood, the present invention is further described in detail below based on specific embodiments in conjunction with the accompanying drawings.

[0022] Figure 1 It is a structural diagram of the present utility model.

[0023] Figure 2 This is a state diagram of the utility model when the slag blocking plug is put into use.

[0024] The reference numerals in the accompanying drawings are:

[0025] Converter 1, tapping port 2, slag stopper 3, guide platform 3-1, notch 3-2, guide mechanism 4, hinged seat 4-1, guide sleeve 4-2, connecting rod 4-3, and clamp 4-4. DETAILED DESCRIPTION

[0026] (Example 1)

[0027] See Figure 1 and Figure 2 The slag blocking device of a nozzle brick converter of this embodiment includes a converter 1; a steel outlet 2 is provided at the bottom of the converter 1; a slag blocking plug 3 is filled in the steel outlet 2; a guide mechanism 4 is rotatably connected to one side of the converter 1; the guide mechanism 4 is turned over and faces the steel outlet 2; the slag blocking plug 3 is put into the steel outlet 2 through the guide mechanism 4.

[0028] Furthermore, the guide mechanism 4 includes an articulated seat 4-1 and a guide sleeve 4-2; the articulated seat 4-1 is fixed to the top of the converter 1; and the guide sleeve 4-2 is hinged to the articulated seat 4-1 through a connecting rod 4-3.

[0029] Furthermore, a clamp 4-4 is provided at the end of the connecting rod 4-3; the guide sleeve 4-2 is fixed to the connecting rod 4-3 through the clamp 4-4, so that the guide sleeve 4-2 can be easily fixed to the connecting rod 4-3, and it is also convenient for later maintenance and replacement.

[0030] Furthermore, a guide platform 3-1 is provided on the top of the slag stopper 3; the guide platform 3-1 is slidably connected to the inner wall of the guide sleeve 4-2, ensuring that the slag stopper 3 can slide stably inside the guide sleeve 4-2, and ensuring that the slag stopper 3 can smoothly enter the steel outlet 2.

[0031] Furthermore, a plurality of notches 3-2 are evenly distributed along the circumferential direction on the side wall of the guide platform 3-1 to avoid the problem that when the slag stopper 3 slides into the sleeve, a large air resistance is generated, which causes the slag stopper 3 to move unsmoothly.

[0032] Furthermore, the bottom of the converter 1 is funnel-shaped, which helps to separate the molten steel and slag, further improving the slag blocking efficiency; at the same time, this design also optimizes the outflow path of the molten steel, reduces the resistance of the molten steel during the steel tapping process, and improves the steel tapping efficiency.

[0033] Furthermore, the guide sleeve 4-2 is made of high-temperature resistant materials, such as graphite, ceramics and silicon dioxide.

[0034] The slag retaining device for the nozzle brick converter 1 of this embodiment significantly improves slag retaining efficiency and molten steel quality, thereby reducing the degradation of molten steel quality and subsequent processing costs caused by slag intrusion. Furthermore, the automated operation of the guide mechanism 4 reduces manual labor intensity, improves production efficiency, and further reduces production costs and energy consumption, resulting in a more stable and efficient steelmaking process for steel companies. Furthermore, this device also provides a useful reference and inspiration for the improvement of other similar process equipment.

[0035] The slag retaining device of the nozzle brick converter 1 of this embodiment has shown significant beneficial effects in improving slag retaining efficiency, enhancing structural stability and durability, improving flexibility and adaptability, optimizing the design of the steel outlet 2, reducing production costs and energy consumption, and improving the level of steelmaking technology.

[0036] The specific embodiments described above further illustrate the purpose, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, 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 retaining device for a nozzle brick converter, characterized in that: The converter (1) comprises a converter (1); a steel outlet (2) is provided at the bottom of the converter (1); a slag stopper (3) is filled in the steel outlet (2); a guide mechanism (4) is rotatably connected to one side of the converter (1); the guide mechanism (4) faces the steel outlet (2) after being turned over; and the slag stopper (3) is put into the steel outlet (2) through the guide mechanism (4).

2. The slag retaining device for a nozzle brick converter according to claim 1, characterized in that: The guide mechanism (4) comprises an articulated seat (4-1) and a guide sleeve (4-2); the articulated seat (4-1) is fixed to the top of the converter (1); and the guide sleeve (4-2) is hinged to the articulated seat (4-1) via a connecting rod (4-3).

3. The slag retaining device for a nozzle brick converter according to claim 2, characterized in that: The end of the connecting rod (4-3) is provided with a hoop (4-4); the guide sleeve (4-2) is fixed to the connecting rod (4-3) via the hoop (4-4).

4. The slag retaining device for a nozzle brick converter according to claim 2, characterized in that: A guide platform (3-1) is provided on the top of the slag blocking plug (3); the guide platform (3-1) is slidably connected to the inner wall of the guide sleeve (4-2).

5. The slag retaining device for a nozzle brick converter according to claim 4, characterized in that: A plurality of notches (3-2) are evenly distributed along the circumferential direction on the side wall of the guide platform (3-1).

6. The slag retaining device for a nozzle brick converter according to claim 1, characterized in that: The bottom of the converter (1) is funnel-shaped.

7. The slag retaining device for a nozzle brick converter according to claim 2, characterized in that: The guide sleeve (4-2) is made of a high-temperature resistant material.

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