Furnace shell for smelting of titanium-iron outside the furnace

Abstract

The utility model provides a titanium -bearing iron furnace outer metallurgy smelting furnace shell, including the shell, the shell is by a plurality of arc shell petal splicing, the lower end of shell petal outside is provided with the reinforcing rib of shell petal periphery extension, convex, the height of reinforcing rib decreases from the middle to both sides. By the traditional integral type cylindrical furnace shell is changed by a plurality of arc shell petal splicing, greatly reduced the dependence on large, complex mould. Shell petal can adopt simpler, smaller mould to manufacture, even standardization production, mould material cost is saved greatly.

Description

Technical Field

[0001] This utility model relates to the field of smelting equipment technology, specifically a furnace shell for ferrotitanium smelting using the external furnace method. Background Technology

[0002] The furnace shell for ferrotitanium-titanium ladle smelting is a key piece of equipment in the ferroalloy smelting process. It is typically manufactured using a one-piece casting process, with its main structure being a cylindrical shape that runs vertically through the furnace. This traditional structure has many drawbacks in actual production and application, seriously affecting the equipment's economy, service life, and maintenance efficiency.

[0003] First, the cylindrical furnace shell cast in one piece is highly dependent on the mold, and a large amount of mold material is required during the manufacturing process. Moreover, due to the strong overall structure and complex shape, the demolding process is difficult, which not only increases production costs but also reduces manufacturing efficiency.

[0004] Secondly, this monolithic structure results in poor local resistance to damage. During use, local areas of the furnace shell (such as the furnace wall or bottom) are susceptible to damage due to high temperatures, corrosion, or mechanical impact. However, because the structure is indivisible, any local damage may render the entire furnace shell irreparable, requiring complete scrapping and resulting in a serious waste of materials and resources.

[0005] In addition, the bottom of the furnace shell, as a critical pressure-bearing part, is subjected to the static pressure and thermal stress of high-temperature molten metal for a long time. Under the coupled effect of thermal fatigue and mechanical load, it is prone to plastic deformation or cracking, which affects the structural stability of the furnace body and the safety of the smelting process.

[0006] Therefore, there is an urgent need for a new type of titanium-iron smelting furnace shell structure to overcome the above-mentioned defects of the existing one-piece cylindrical furnace shell, achieve energy saving and consumption reduction in the manufacturing process, improve local replaceability and maintenance economy, and enhance the deformation resistance of the bottom structure. Utility Model Content

[0007] To address the technical problems in the background art, this utility model discloses a furnace shell for ferrotitanium smelting using the external furnace method.

[0008] This utility model provides a furnace shell for ferrotitanium smelting using an external furnace method, including a shell that is composed of multiple arc-shaped shell segments spliced ​​together. The lower end of the outer surface of the flap is provided with a reinforcing rib that extends circumferentially and protrudes from the flap. The height of the reinforcing ribs decreases from the middle to both sides.

[0009] Furthermore, the two sides of the highest point of the reinforcing rib have an asymmetrical structure.

[0010] Furthermore, the upper end face of the reinforcing ribs located on both sides of the highest point is a concave arc shape.

[0011] Furthermore, both ends of the shell flap are provided with radially outward protruding connecting plates; the connecting plates are provided with multiple connecting holes; the shell flaps are spliced ​​together through the connecting holes.

[0012] Furthermore, the connecting plate has a raised convex plate at the location where the connecting hole is located.

[0013] Furthermore, the protruding plates and connecting holes are arranged in three vertically spaced intervals; the protruding plates on the upper and lower sides are designated as end protruding plates; the middle protruding plate is designated as a central protruding plate; the vertical spacing and horizontal spacing of the central protruding plates are both greater than those of the end protruding plates.

[0014] Furthermore, both the end convex plate and the middle convex plate are arc-shaped; the radius of the middle convex plate is larger than the radius of the end convex plate.

[0015] Furthermore, a horizontally arranged top plate is provided at the upper end of the shell valve; the top plate extends circumferentially along the shell valve and protrudes outward from the shell valve.

[0016] Furthermore, a card slot is provided on the inner side of the top plate.

[0017] Furthermore, the card interfaces are located at both ends of the top plate.

[0018] Furthermore, the shell segments that are assembled into the shell are set to four.

[0019] The beneficial effects of this utility model are: 1. By replacing the traditional one-piece cylindrical furnace shell with one composed of multiple arc-shaped shell segments, the reliance on large, complex molds is greatly reduced. The shell segments can be manufactured using simpler, smaller molds, and even standardized in production, significantly saving on mold material costs.

[0020] 2. The demolding process has been simplified, making the operation easier and reducing the time and manpower consumption in the manufacturing process, thereby effectively improving the overall manufacturing efficiency.

[0021] 3. A circumferentially extending and protruding reinforcing rib is provided on the outer side of the lower part of the shell, which significantly increases the rigidity and structural strength of the bottom area of ​​the furnace shell, making it less prone to deformation.

[0022] 4. The reinforcing ribs adopt an optimized design with a height that decreases from the middle to both sides, which can more rationally distribute and transfer stress and avoid stress concentration. This structure can better resist the static pressure, thermal stress and thermal fatigue effects of high-temperature molten metal, effectively preventing plastic deformation or cracking at the bottom, thereby ensuring the safety of the smelting process and the long-term stability of the furnace structure. Attached Figure Description

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0024] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a top view of the present invention; Figure 3 This is the front view of this utility model; In the diagram: 1. Shell flap; 2. Reinforcing rib; 3. Connecting plate; 4. Connecting hole; 5. End protrusion; 6. Middle protrusion; 7. Top plate; 8. Clip interface. Detailed Implementation

[0025] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0026] like Figure 1-3 As shown, this utility model discloses a furnace shell for ferrotitanium smelting using an external furnace method, comprising a cylindrical shell extending vertically, composed of multiple vertically projected arc-shaped shell segments 1. The advantages of this design are: 1. By replacing the traditional one-piece cylindrical furnace shell with multiple arc-shaped shell segments 1, the reliance on large, complex molds is greatly reduced. The shell segments 1 can be manufactured using simpler, smaller molds, and even standardized production can be achieved, significantly saving mold material costs. 2. The demolding process is simplified, making operation easier and reducing time and manpower consumption during manufacturing, thereby effectively improving overall manufacturing efficiency.

[0027] In this embodiment, four shell segments 1 are used to assemble the complete shell. The reasons for this design are as follows: 1. Four shell segments 1 make assembly simpler and more flexible. Compared to a larger number of shell segments 1, this reduces the number of connection points. Compared to a smaller number of shell segments 1, this significantly reduces the weight and difficulty of hoisting a single piece, thereby significantly improving the overall efficiency of manufacturing and on-site assembly. 2. This number of segments avoids the risk of reduced overall rigidity and too many connection points becoming weak points due to too many segments. It also avoids the problems of excessive volume and weight of a single piece, making transportation and hoisting difficult, caused by two- or three-segment designs. The four-segment structure provides optimal modular flexibility while ensuring overall structural performance.

[0028] The lower end of the outer side of the shell flap 1 is provided with a circumferentially extending and protruding reinforcing rib 2, which is used to increase the rigidity and structural strength of the bottom area of ​​the furnace shell and make it less prone to deformation.

[0029] In this embodiment, the height of the reinforcing rib 2 decreases from the middle to both sides. The advantage of this design is that the optimized design of the reinforcing rib 2, with its height decreasing from the middle to both sides, allows for a more rational distribution and transfer of stress, avoiding stress concentration. This structure better resists the static pressure, thermal stress, and thermal fatigue effects of high-temperature molten metal, effectively preventing plastic deformation or cracking at the bottom, thus ensuring the safety of the smelting process and the long-term stability of the furnace structure.

[0030] The reinforcing ribs 2 are located on both sides of the highest point, with their upper surfaces forming a concave arc shape. The beneficial effects of this design are: 1. The concave arc design locally increases the material's section modulus, enhancing the rigidity and bending resistance of the reinforcing ribs 2. This allows the reinforcing ribs 2 to more effectively resist the static pressure and thermal stress on the bottom of the furnace shell, suppressing overall deformation of the lower shell segments and ensuring the stability of the furnace structure. 2. This arc-shaped structure allows the load on the reinforcing ribs 2 to be transferred more smoothly along its curved surface to the shell segments 1 on both sides, avoiding excessive load accumulation at the top of the reinforcing ribs 2, thereby improving the uniformity and efficiency of the load-bearing capacity of the entire bottom structure. 3. Compared to sharp or right-angle transitions, the arc-shaped upper surface is more conducive to demolding during the casting process, reducing manufacturing difficulty and lowering the risk of casting defects (such as sand holes and shrinkage cavities) occurring in stress-critical areas, thus improving product quality consistency.

[0031] The specific splicing structure of shell flap 1 is as follows: Connecting plates 3 extending radially outwards to both ends of shell flap 1 are provided. Coplanar protruding end plates 5 are provided at the upper and lower ends of the connecting plates 3, and a coplanar protruding middle plate 6 is provided in the middle position. Both the end plates 5 and the middle plate 6 are arc-shaped and have concentrically arranged connecting holes 4. When shell flap 1 is spliced, adjacent connecting plates 3 are fitted together, bolts are inserted into adjacent, concentric connecting holes 4, and locked in place with nuts.

[0032] The radius of the central convex plate 6 is larger than that of the end convex plates 5. The reason for this design is that both the upper and lower ends of the shell are fixed and constrained, making the central region of the shell more prone to deformation. Increasing the size of the central convex plate 6 increases the structural strength of the central part of the shell, overcoming its tendency to deform.

[0033] A horizontally arranged top plate 7 is provided at the upper end of the shell flap 1; the top plate 7 extends circumferentially along the shell flap 1 and protrudes outward from the shell flap 1. The top plate 7 has two symmetrically arranged through holes for connecting and fixing the upper end of the shell.

[0034] The inner side of the top plate 7 is provided with a snap-fit ​​interface 8, which provides a precise positioning and connection point for the top of the furnace shell and other supporting equipment. Through the snap-fit ​​engagement, relative displacement between the top plate 7 and adjacent components can be effectively prevented, ensuring that the furnace shell maintains the overall structural stability during high-temperature smelting and reducing the risk of misalignment caused by thermal stress or mechanical vibration.

[0035] To facilitate the processing and forming of the card interface 8 and simplify the mold structure, the card interface 8 is set at both ends of the top plate 7.

[0036] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A furnace shell for ferrotitanium smelting using the ladle method, comprising a shell, characterized in that: The shell is composed of multiple arc-shaped shell lobes (1) joined together; The lower end of the outer side of the shell (1) is provided with a reinforcing rib (2) that extends circumferentially and protrudes from the shell (1). The height of the reinforcing rib (2) decreases from the middle to both sides.

2. The furnace shell for ferrotitanium smelting according to claim 1, characterized in that: The two sides of the highest point of the reinforcing rib (2) are asymmetrical.

3. The furnace shell for ferrotitanium smelting according to claim 2, characterized in that: The reinforcing rib (2) is located on both sides of the highest point, and its upper end face is concave arc shape.

4. The furnace shell for ferrotitanium smelting according to claim 1, characterized in that: Both ends of the shell flap (1) are provided with radially outward protruding connecting plates (3); The connecting plate (3) is provided with multiple connecting holes (4); The shell flaps (1) are spliced ​​together through the connecting holes (4).

5. The furnace shell for ferrotitanium smelting according to claim 4, characterized in that: The connecting plate (3) has a raised plate at the position where the connecting hole (4) is located.

6. The furnace shell for ferrotitanium smelting according to claim 5, characterized in that: The protruding plate and the connecting hole (4) are arranged in three vertically spaced intervals; The upper and lower convex plates are set as end convex plates (5); The middle convex plate is set as the central convex plate (6); The vertical spacing and horizontal spacing of the central convex plate (6) are both greater than those of the end convex plates.

7. The furnace shell for ferrotitanium smelting according to claim 6, characterized in that: Both the end protrusion (5) and the middle protrusion (6) are arc-shaped; The radius of the central convex plate (6) is greater than the radius of the end convex plate (5).

8. The furnace shell for ferrotitanium smelting according to claim 1, characterized in that: The upper end of the shell (1) is provided with a horizontally arranged top plate (7). The top plate (7) extends circumferentially along the shell flap (1) and protrudes outward from the shell flap (1); The inner side of the top plate (7) is provided with a card interface (8).

9. The furnace shell for ferrotitanium smelting according to claim 8, characterized in that: The card interface (8) is located at both ends of the top plate (7).

10. The furnace shell for ferrotitanium smelting according to claim 1, characterized in that: The shell segments (1) that are assembled into the shell are set to four.

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