Nozzle brick of smelting furnace

Abstract

A nozzle brick of a smelting furnace comprises a brick body, and the brick body is installed in a furnace wall liquid outlet flow channel of the smelting furnace. The brick body comprises a splicing part and a clamping part, the clamping part is arranged at the front end of the splicing part, the top of the splicing part inclines downwards from front to back, and the top of the clamping part is horizontally arranged and is parallel to the bottom of the splicing part; a blocking channel and a liquid outlet channel are arranged in the brick body, the blocking channel and the liquid outlet channel are communicated with each other and penetrate through the brick body, the blocking channel is located at the rear end of the liquid outlet channel and communicated with the interior of the smelting furnace, the liquid outlet channel is communicated with the exterior of the smelting furnace, and the blocking channel is used for arranging a blocking plug. According to the nozzle brick, the brick body is designed into the splicing part and the clamping part, and the top of the splicing part is inclined downwards from front to back, so that the nozzle brick can be more easily inserted and positioned in a liquid outlet runner of a furnace wall during mounting, the adjustment time in the mounting process is shortened, the mounting accuracy and stability are improved, and the service life of the nozzle brick is prolonged. Therefore, the leakage risk caused by improper installation is reduced.

Description

Technical Field

[0001] The utility model relates to the field of smelting furnace forming, in particular to a nozzle brick of a smelting furnace. Background Art

[0002] Aluminum is the world's most widely consumed metal after steel. Among non-ferrous metals, aluminum ranks among the top in terms of reserves, production, and consumption. Due to its widespread use, the amount of aluminum scrap is increasing. Furthermore, many aluminum products are single-use, with a short useful life. The resulting aluminum scrap not only pollutes the environment but also wastes metal resources. Consequently, aluminum recycling has emerged, leading to the development of aluminum smelting furnaces. As an important industrial boiler, aluminum smelting furnaces are a new type of energy-efficient furnace developed based on the aluminum smelting process. Existing furnaces feature integrally cast nozzles and furnace walls. However, after a period of use, nozzles are prone to leakage. This requires shutting down the furnace, demolishing the integral furnace body, and then recasting the nozzles. This method is complex and time-consuming. To address these issues, industry experts have improved the furnace structure by designing removable nozzle bricks. In the event of leakage, the nozzle bricks can be removed and replaced.

[0003] like Figure 1 Shown are the front view (a) and side sectional view (b) of the nozzle bricks used in the existing smelting furnace. As can be seen from the figure, the existing nozzle bricks are rectangular in shape, and it is difficult to ensure the installation is in place when installing them on the furnace wall of the smelting furnace, resulting in a long time for adjustment during the installation process. Utility Model Content

[0004] In view of the problems raised in the background technology, the purpose of the present invention is to provide a nozzle brick for a smelting furnace, which solves the problem that it is difficult to ensure that the existing nozzle bricks are properly installed when being installed with the smelting furnace.

[0005] To achieve this purpose, the present invention adopts the following technical solutions:

[0006] A nozzle brick for a smelting furnace comprises a brick body, wherein the brick body is installed in a liquid outlet channel of a furnace wall of the smelting furnace;

[0007] The brick body includes an inlay portion and a clamping portion, wherein the clamping portion is provided at the front end of the inlay portion, the top of the inlay portion is inclined downward from front to back, and the top of the clamping portion is horizontally arranged and parallel to the bottom;

[0008] A blocking channel and a liquid outlet channel are provided inside the brick body. The blocking channel and the liquid outlet channel are connected to each other and pass through the brick body. The blocking channel is located at the rear end of the liquid outlet channel. The blocking channel is connected to the inside of the smelting furnace, and the liquid outlet channel is connected to the outside of the smelting furnace. The blocking channel is used to set a blocking plug.

[0009] Preferably, the bottom of the inlay portion is arranged horizontally, and the bottom of the inlay portion and the bottom of the clamping portion are in the same plane.

[0010] Preferably, the blocking channel is located inside the inlay portion, the rear end of the liquid outlet channel is located at the inlay portion, and the front end of the liquid outlet channel is located at the clamping portion.

[0011] Preferably, the vertical cross-section of the blocking channel is circular, the vertical cross-section of the liquid outlet channel is square, and the area of the vertical cross-section of the liquid outlet channel is larger than the area of the vertical cross-section of the blocking channel.

[0012] Preferably, the liquid outlet channel is a conical through hole, the aperture of the liquid outlet channel gradually increases from back to front, and the small-diameter end of the liquid outlet channel is connected to the blocking channel.

[0013] Preferably, the top wall of the liquid outlet channel is inclined from back to front and upward, and the angle α between the top wall of the liquid outlet channel and the horizontal line is 18°-30°.

[0014] Preferably, the bottom wall of the liquid outlet channel is inclined downward from the back to the front, and the angle β between the bottom wall of the liquid outlet channel and the horizontal line is 3°-10°.

[0015] Preferably, the two side walls of the liquid outlet channel are inclined outward from the back to the front, and the angle between the side walls of the liquid outlet channel and the horizontal line is 3°-5°.

[0016] Compared with the prior art, one of the above technical solutions has the following beneficial effects:

[0017] By designing the brick body as a two-part inlay and clamping section, and specifically sloping the top of the inlay downward from front to back, the nozzle bricks can be more easily inserted and positioned within the liquid outlet channel of the smelting furnace wall during installation. This not only reduces adjustment time during installation but also improves installation accuracy and stability, thereby reducing the risk of leakage caused by improper installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 1. The present invention provides a front view (a) and a side cross-sectional view (b) of a nozzle brick of the prior art;

[0019] Figure 2 It is a structural diagram of an embodiment of the utility model;

[0020] Figure 3 It is a front view of an embodiment of the utility model;

[0021] Figure 4 yes Figure 3 Cross-section of the middle AA;

[0022] Figure 5 yes Figure 3 Cross-section of the BB.

[0023] Among them: brick body 10, blocking channel 101, liquid outlet channel 102, inlaying part 11 and clamping part 12. DETAILED DESCRIPTION

[0024] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0025] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0026] Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or to implicitly specify the quantity of the technical features being referred to. Thus, a feature identified as "first," "second," and "third" may explicitly or implicitly include one or more of the features.

[0027] It should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in the present invention based on the specific circumstances.

[0028] The following is combined with Figures 1 to 5 The technical solution of the utility model is further illustrated through specific implementation methods.

[0029] As industrialization accelerates, demand for aluminum, a key industrial raw material, continues to grow. Aluminum's widespread application extends beyond traditional sectors like aerospace, construction, and automotive, and into emerging industries like electronics and packaging. However, the widespread use of aluminum products also leads to environmental pollution and resource waste. To address this challenge, aluminum recycling processes have emerged, with aluminum smelting furnaces becoming a key component.

[0030] The structure of early aluminum melting furnaces was relatively simple, and the nozzles and furnace walls were usually cast as a whole. Although this design was relatively stable during the initial use, some problems gradually emerged as the use time extended. The most prominent problem is that after long-term use, leakage is prone to occur at the nozzle. When leakage occurs, the melting furnace needs to be shut down, the integral furnace body needs to be destroyed, and then the nozzle needs to be re-cast. This method is complicated to operate and has a long construction period. In order to solve this problem, engineers began to try to design the nozzle of the melting furnace into a detachable form. This improvement makes the installation of the melting furnace more convenient, and when the nozzle leaks, the nozzle bricks can be directly replaced without stopping the entire melting process. However, this improvement also brings new challenges. Existing nozzle bricks such as Figure 1 As shown, the nozzle brick is typically a simple rectangular parallelepiped, with a corresponding square mounting opening in the furnace wall to accommodate the nozzle brick. However, due to the regular rectangular shape of the nozzle brick, there is no proper positioning when inserting the rectangular parallelepiped into the mounting opening in the furnace wall. This makes it difficult to accurately position the nozzle brick during installation, and repeated adjustments are often required to ensure proper installation. This not only increases installation time but may also affect the sealing and stability of the nozzle brick.

[0031] In order to solve this problem, the present application proposes a nozzle brick for a smelting furnace, comprising a brick body 10, which is installed in a liquid outlet channel of a furnace wall of the smelting furnace;

[0032] The brick body 10 includes an inlay portion 11 and a clamping portion 12. The clamping portion 12 is provided at the front end of the inlay portion 11. The top of the inlay portion 11 is inclined downward from front to back. The top of the clamping portion 12 is horizontally arranged and parallel to the bottom.

[0033] A blocking channel 101 and a liquid outlet channel 102 are provided inside the brick body 10. The blocking channel 101 and the liquid outlet channel 102 are connected to each other and pass through the brick body 10. The blocking channel 101 is located at the rear end of the liquid outlet channel 102. The blocking channel 101 is connected to the interior of the smelting furnace, and the liquid outlet channel 102 is connected to the outside of the smelting furnace. The blocking channel 101 is used to set a blocking plug.

[0034] The technical solution of the present application is to design a brick body 10 including a splicing portion 11 and a clamping portion 12, so that the nozzle brick can be stably positioned and installed during installation. The splicing portion 11 is located at the rear end of the clamping portion 12, and the top of the splicing portion 11 is tilted downward from front to back. Correspondingly, the top of the nozzle brick installation opening of the furnace wall of the smelting furnace matches the top of the nozzle brick body 10. Specifically, when installing the nozzle brick, the nozzle brick is aligned with the nozzle brick installation opening of the furnace wall outside the smelting furnace for splicing and installation, and the nozzle brick is pushed into the installation opening from the outside to the inside. Because the top of the splicing portion 11 of the brick body is tilted downward from front to back and matches the nozzle brick installation opening, the height of the clamping portion 12 at the front end of the splicing portion 11 is higher than the height of any part of the splicing portion 11. Therefore, after the splicing portion 11 contacts the corresponding position inside the nozzle brick installation opening, the brick body 10 as a whole cannot move further into the smelting furnace, and the brick body 10 is confined to the nozzle brick installation opening of the smelting furnace. The top of the clamping portion 12 is arranged horizontally and parallel to the bottom, further ensuring the stability of the nozzle brick and reducing loosening or damage caused by thermal stress or mechanical stress. This design enables the nozzle brick to maintain a stable working state in a high-temperature environment, extending its service life. The sealing channel 101 and the liquid outlet channel 102 provided inside the brick body 10 are interconnected, and the sealing channel 101 can be used to set a sealing plug, which allows operators to flexibly control the outflow of molten aluminum according to actual needs, thereby improving the flexibility and adaptability of the production process. At the same time, the presence of the sealing channel 101 also facilitates subsequent maintenance and overhaul.

[0035] Furthermore, the bottom of the splicing portion 11 is horizontally arranged, and the bottom of the splicing portion 11 and the bottom of the clamping portion 12 are in the same plane.

[0036] The horizontal setting of the bottom of the inlay portion 11 helps to increase the contact area between the nozzle brick and the furnace wall outlet flow channel, improving installation stability. The horizontal bottom can better fit the bottom of the furnace wall outlet flow channel, reducing shaking and deviation during installation.

[0037] The bottoms of the inlay portion 11 and the clamping portion 12 are in the same plane, ensuring that the nozzle brick remains level during installation. This design helps prevent the nozzle brick from tilting or falling, further enhancing the stability and reliability of installation. Furthermore, the consistent planarity of the bottoms of the inlay portion 11 and the clamping portion 12 simplifies the installation process. Installers only need to ensure that the entire bottom of the nozzle brick is aligned with the bottom of the furnace wall liquid outlet channel, without having to consider height differences between different parts, thereby improving installation efficiency.

[0038] By aligning the bottoms of the inlay portion 11 and the clamping portion 12 on the same plane, the nozzle brick is ensured to be stable and secure during installation. This design effectively improves the installation stability and reliability of the nozzle brick within the liquid outlet flow channel of the smelting furnace wall, while simplifying the installation process and improving installation efficiency. Furthermore, the nozzle brick can be better secured within the liquid outlet flow channel of the smelting furnace, avoiding unstable installation or leakage caused by an uneven bottom, improving the installation accuracy and service life of the nozzle brick, and ensuring the smooth progress of the smelting process.

[0039] Furthermore, the blocking channel 101 is located inside the inlay portion 11 , the rear end of the liquid outlet channel 102 is located at the inlay portion 11 , and the front end of the liquid outlet channel 102 is located at the clamping portion 12 .

[0040] The blocking channel 101 is located inside the splicing portion 11, so that the blocking channel 101 can be better connected with the inside of the smelting furnace, which is convenient for setting a blocking plug, thereby effectively controlling the outflow of liquid. The rear end of the liquid outlet channel 102 is located at the splicing portion 11, and the front end is located at the clamping portion 12. This arrangement allows the liquid to flow smoothly from the inside of the smelting furnace to the outside. At the same time, the design of the clamping portion 12 also helps to firmly install the nozzle brick. Through the above arrangement, the blocking channel 101 and the liquid outlet channel 102 form a continuous channel system inside the nozzle brick. When blocking is required, the blocking plug can be inserted into the blocking channel 101 in the splicing portion 11 to effectively prevent the molten metal from flowing out. When liquid needs to be discharged, after removing the blocking plug, the molten metal can flow from the blocking channel 101 into the liquid outlet channel 102, and then flow out of the furnace. This design not only ensures the blocking effect of the nozzle brick, but also realizes the smooth flow of molten metal, thereby improving the operating efficiency and safety of the smelting furnace.

[0041] Furthermore, the vertical cross-section of the blocking channel 101 is circular, the vertical cross-section of the liquid outlet channel 102 is square, and the area of the vertical cross-section of the liquid outlet channel 102 is larger than that of the blocking channel 101 .

[0042] The plugging channel 101 adopts a circular cross-section design, which is conducive to the installation and sealing effect of the plug. The liquid outlet channel 102 adopts a square cross-section design, which can provide a larger liquid outlet area, helping to improve the liquid outlet efficiency; on the other hand, it can provide a larger observation window for workers to observe the water outlet of the smelting furnace. Figure 1The front view of the removable sprue brick of the prior art (a) shows a circular vertical cross-section of the liquid outlet channel, with the liquid inlet and outlet of the liquid outlet channel being concentric circles. The observation window is small, and workers even need to bend down until their line of sight is level with the liquid outlet to better understand the specific situation of the sprue and whether there is any leakage. By designing the vertical cross-sectional area of the liquid outlet channel 102 to be larger than the vertical cross-sectional area of the blocking channel 101, the blocking effect can be guaranteed, the flow capacity of the liquid outlet channel can be maximized, and a larger observation window of the sprue brick can be guaranteed.

[0043] To further illustrate, the circular cross-section of the blocking channel 101 facilitates installation and sealing of the blocking plug, while the square cross-section of the liquid outlet channel 102 provides a larger liquid outlet area. The larger cross-sectional area of the liquid outlet channel 102 ensures effective blocking while maximizing liquid outlet capacity. Furthermore, the square observation window eliminates the need for workers to bend over for observation. This structural design effectively improves the overall performance and usability of the smelting furnace nozzle bricks.

[0044] Furthermore, the liquid outlet channel 102 is a conical through hole, the aperture of the liquid outlet channel 102 gradually increases from back to front, and the small-diameter end of the liquid outlet channel 102 is connected to the blocking channel 101.

[0045] Designing the liquid outlet channel 102 as a tapered through-hole with a gradually increasing diameter from back to front helps improve the liquid outlet performance of the smelting furnace nozzle brick. The tapered design reduces liquid resistance within the channel, ensuring smoother liquid flow. The gradually increasing diameter reduces liquid flow velocity and impact force, facilitating control of the liquid outlet speed and flow rate.

[0046] The small-diameter end of the liquid outlet channel 102 is connected to the blocking channel 101. This design ensures that the blocking plug can effectively block the liquid outlet channel and prevent accidental liquid outflow. At the same time, when liquid needs to be discharged, the blocking plug can be removed and the liquid can flow smoothly from the small-diameter end to the large-diameter end, achieving a good liquid discharge effect.

[0047] By optimizing the structure of the liquid outlet channel, we effectively solved the problem of liquid outlet quality in the smelting furnace nozzle bricks. The tapered through-hole and gradually increasing aperture design not only improve liquid flow but also enhance the controllability and stability of the liquid outlet process. In addition, the connection design with the blocking channel also enhances the safety and operation convenience of the nozzle bricks.

[0048] Furthermore, the top wall of the liquid outlet channel 102 is inclined from back to front and upward, and the angle α between the top wall of the liquid outlet channel 102 and the horizontal line is 18°-30°.

[0049] The top wall of the liquid outlet channel 102 slopes upward from back to front, with the inclination angle α controlled within the range of 18°-30°, effectively improving the flow properties of the melt. This design allows the liquid outlet channel to exhibit a certain vertical expansion trend, helping to reduce resistance to the melt during flow and preventing the formation of eddies or stagnant areas within the channel.

[0050] Specifically, the 18°-30° tilt angle is the result of optimization. If the α angle is too small, the ideal flow improvement effect may not be achieved; while if the α angle is too large, the melt flow rate may be too fast, affecting control accuracy. This specific angle design ensures smooth melt flow while maintaining appropriate flow rate and flow control.

[0051] This structural design not only improves the discharge efficiency of the smelting furnace, but also reduces the energy loss of the melt during the flow process, which is conducive to maintaining the stability of the melt temperature. At the same time, since the possibility of melt retention in the channel is reduced, it can also reduce the wear of the nozzle bricks to a certain extent and extend their service life.

[0052] Furthermore, the bottom wall of the liquid outlet channel 102 is inclined downward from the back to the front, and the angle β between the bottom wall of the liquid outlet channel 102 and the horizontal line is 3°-10°.

[0053] The bottom wall of the liquid outlet channel 102 is tilted downward from back to front, with the tilt angle β controlled within the range of 3°-10°, which can effectively improve the flow properties of the melt. This design allows the melt to flow more smoothly through the liquid outlet channel, reducing the retention and accumulation of melt at the bottom of the channel.

[0054] Specifically, the angle range of β ensures that the melt has sufficient downward momentum to facilitate rapid outflow, while also preventing excessive drop that could cause splashing or excessive flow. Furthermore, this angle can also reduce the contact area between the melt and the channel bottom wall, minimizing heat loss and the likelihood of adhesion.

[0055] To further illustrate, the conical design of the liquid outlet channel 102 with a gradually increasing aperture from back to front, as well as the inclined design of the top and side walls, and the inclined structure of the bottom wall further optimize the geometry of the entire liquid outlet channel 102. This all-round optimized design not only improves the flow rate and stability of the molten liquid, but also reduces the residence time of the molten liquid in the channel of the nozzle brick, reduces the risk of reaction between the molten liquid and the nozzle brick material, and extends the service life of the nozzle brick. In addition, this design is also conducive to the cleaning and maintenance of the nozzle brick. When the liquid is stopped, the inclined bottom wall structure can promote the natural outflow of the residual melt, reduce the difficulty of cleaning, and improve production efficiency.

[0056] Furthermore, the two side walls of the liquid outlet channel 102 are inclined outward from the back to the front, and the angle between the side walls of the liquid outlet channel 102 and the horizontal line is 3°-5°.

[0057] The two sidewalls of the liquid outlet channel 102 slope outward from back to front, and the angle between the sidewalls and the horizontal is set within a range of 3°-5°. This design allows the liquid outlet channel to exhibit a certain expansion trend in the horizontal direction. By controlling the sidewall inclination angle within a narrow range, smooth liquid discharge can be ensured while avoiding flow instability caused by excessive expansion.

[0058] This structural design effectively improves the liquid discharge performance of the smelting furnace nozzle bricks. First, the outward inclination of the sidewalls of the liquid discharge channel 102 reduces frictional resistance between the liquid and the channel wall during flow, thereby increasing the liquid discharge speed and flow rate. Second, the appropriate expansion angle reduces the liquid pressure within the channel, minimizing backflow and eddy currents, thereby ensuring smoother liquid discharge.

[0059] The technical principles of the present invention have been described above with reference to specific embodiments. These descriptions are intended solely to illustrate the principles of the present invention and should not be construed in any way as limiting the scope of protection of the present invention. Based on the explanations herein, those skilled in the art will be able to devise other specific implementations of the present invention without inventive effort, and such implementations will fall within the scope of protection of the present invention.

Claims

1. A nozzle brick for a smelting furnace, characterized by: It comprises a brick body (10), wherein the brick body (10) is installed in a liquid outlet channel of a furnace wall of a smelting furnace; The brick body (10) comprises an inlay portion (11) and a clamping portion (12), wherein the clamping portion (12) is arranged at the front end of the inlay portion (11), the top of the inlay portion (11) is inclined downward from front to back, and the top of the clamping portion (12) is arranged horizontally and is parallel to the bottom. A blocking channel (101) and a liquid outlet channel (102) are provided inside the brick body (10); the blocking channel (101) and the liquid outlet channel (102) are communicated with each other and pass through the brick body (10); the blocking channel (101) is located at the rear end of the liquid outlet channel (102); the blocking channel (101) is communicated with the inside of the smelting furnace; the liquid outlet channel (102) is communicated with the outside of the smelting furnace; and the blocking channel (101) is used to set a blocking plug.

2. The nozzle brick of a smelting furnace according to claim 1, characterized in that: The bottom of the inlay portion (11) is arranged horizontally, and the bottom of the inlay portion (11) and the bottom of the clamping portion (12) are located in the same plane.

3. The nozzle brick of a smelting furnace according to claim 2, characterized in that: The blocking channel (101) is located inside the inlay portion (11), the rear end of the liquid outlet channel (102) is located in the inlay portion (11), and the front end of the liquid outlet channel (102) is located in the clamping portion (12).

4. The nozzle brick of a smelting furnace according to claim 3, characterized in that: The vertical cross-section of the blocking channel (101) is circular, the vertical cross-section of the liquid outlet channel (102) is square, and the area of the vertical cross-section of the liquid outlet channel (102) is greater than the area of the vertical cross-section of the blocking channel (101).

5. The nozzle brick of a smelting furnace according to claim 4, characterized in that: The liquid outlet channel (102) is a conical through hole, the aperture of the liquid outlet channel (102) gradually increases from the back to the front, and the small-diameter end of the liquid outlet channel (102) is connected to the blocking channel (101).

6. The nozzle brick of a smelting furnace according to claim 4, characterized in that: The top wall of the liquid outlet channel (102) is inclined upward from back to front, and the angle α between the top wall of the liquid outlet channel (102) and the horizontal line is 18°-30°.

7. The nozzle brick of a smelting furnace according to claim 4, characterized in that: The bottom wall of the liquid outlet channel (102) is inclined downward from the back to the front, and the angle β between the bottom wall of the liquid outlet channel (102) and the horizontal line is 3°-10°.

8. The nozzle brick of a smelting furnace according to claim 4, characterized in that: The two side walls of the liquid outlet channel (102) are inclined outward from the back to the front, and the angle between the side walls of the liquid outlet channel (102) and the horizontal line is 3°-5°.

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