A high-temperature resistant chute for feeding a 25T smelting furnace

Abstract

This utility model discloses a high-temperature resistant chute for feeding a 25T smelting furnace, relating to the technical field of aluminum smelting equipment. It includes a main body, comprising an outer shell. A refractory brick layer is disposed on the bottom surface inside the outer shell. An aluminum silicate fiber board is disposed above the refractory brick layer. A chute lining is disposed on the aluminum silicate fiber board. A cast-in-place layer is disposed in the gap formed between the chute lining, the outer shell, and the aluminum silicate fiber board. This utility model adopts a multi-layer design for the chute body, consisting of an outer shell, a refractory brick layer, an aluminum silicate fiber board, and a chute lining. The chute lining is filled with cast-in-place material between itself and the outer shell, giving the chute better high-temperature resistance and stronger erosion resistance. Simultaneously, a splash guard is added to the chute body to prevent molten aluminum from splashing out and causing safety hazards.

Description

Technical Field

[0001] This utility model relates to the technical field of aluminum smelting equipment, and in particular to a high-temperature resistant chute for feeding into a 25T smelting furnace. Background Technology

[0002] Currently, when charging a 25T smelting furnace, the use of a 15t ladle with a charging chute requires a continuous aluminum pouring time of 5-8 minutes. The existing charging chute uses castable refractory for its refractory layer, and its structure is simple, mostly a single layer, which cannot simultaneously meet the requirements of high temperature resistance and mechanical strength. Under the continuous scouring of molten aluminum at temperatures as high as 700℃-900℃ for 5-8 minutes, the bottom refractory layer and steel plate are prone to problems such as penetration, cracking, and peeling. This results in a short service life for conventional charging chutes. Moreover, the penetration, cracking, and peeling of the bottom of the chute due to high temperature will affect the material flow efficiency and increase the risk of blockage. In addition, conventional charging chutes lack shielding measures, which can easily cause molten aluminum to splash out during pouring, creating safety hazards for workers and the surrounding environment. Utility Model Content

[0003] The purpose of this invention is to provide a high-temperature resistant chute for feeding into a 25T smelting furnace, which solves the problems mentioned in the background art, such as the easy occurrence of penetration, cracking, and peeling of conventional feeding chutes due to their simple structure under the continuous scouring of molten aluminum at a temperature of 700℃-900℃ for 5-8 minutes.

[0004] The present invention adopts the following technical solution:

[0005] This utility model discloses a high-temperature resistant chute for feeding a 25T smelting furnace, comprising a body, the body including an outer shell, a refractory brick layer disposed on the bottom surface inside the outer shell, an aluminum silicate fiber board disposed above the refractory brick layer, a chute lining disposed on the aluminum silicate fiber board, and a casting layer disposed in the gap formed between the chute lining, the outer shell, and the aluminum silicate fiber board.

[0006] Preferably, the outer casing is made of heat-resistant steel using segmented welding.

[0007] Preferably, the chute liner is a one-piece molded design.

[0008] Preferably, the tail of the main body is raised by 20° relative to the inlet.

[0009] Preferably, the upper edge of the outer shell is provided with a chute edge, the chute edge is fixedly connected to the upper edge of the outer shell, the casting layer and the chute lining, and a splash guard is provided on the chute edge.

[0010] Preferably, the splash guard is located on the opposite side and one side of the housing and the inlet.

[0011] Preferably, the body includes a receiving section, a variable diameter section, and a feed inlet section. The receiving section and the feed inlet section are connected by the variable diameter section. The width of the feed inlet section is smaller than that of the receiving section, and the width of the variable diameter section gradually decreases from the receiving section to the feed inlet section.

[0012] The feed inlet section has a butt plate at its edge, which is connected to the smelting furnace by a bolt assembly.

[0013] Preferably, the bottom of the body is provided with support legs.

[0014] Compared with the prior art, the beneficial technical effects of this utility model are as follows:

[0015] This invention features a multi-layered design for the chute body, consisting of an outer shell, a refractory brick layer, an aluminum silicate fiberboard, and a chute lining. The chute lining is filled with cast-in-place material between the outer shell and the inner shell, giving the chute better high-temperature resistance and stronger erosion resistance. Additionally, a splash guard is added to the chute body to prevent molten aluminum from splashing out and causing safety hazards. Furthermore, the chute body has a tail-lifting design to avoid severe aluminum solidification at the inlet. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings.

[0017] Figure 1 This is a schematic diagram of a high-temperature resistant chute structure for feeding a 25T smelting furnace according to the present invention;

[0018] Figure 2 This is a schematic diagram of the main body structure of a high-temperature resistant chute for feeding into a 25T smelting furnace according to the present invention.

[0019] Figure 3 This is a cross-sectional view of a high-temperature resistant chute for feeding into a 25T smelting furnace according to the present invention.

[0020] Explanation of reference numerals in the attached drawings: 1. Body; 1-1. Outer shell; 1-2. Refractory brick layer; 1-3. Alumina silicate fiberboard; 1-4. Chute lining; 1-5. Casting layer; 1-6. Receiving section; 1-7. Variable diameter section; 1-8. Feed inlet section; 1-9. Butt joint plate; 2. Chute edge; 3. Splash guard; 4. Support leg. Detailed Implementation

[0021] To make the technical problems, technical solutions and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0022] like Figure 1As shown in the figure, this embodiment discloses a high-temperature resistant chute for feeding a 25T smelting furnace, including a body 1. The body 1 includes three sections: a receiving section 1-6, a reducing section 1-7, and a feed inlet section 1-8. The receiving section 1-6 and the feed inlet section 1-8 are connected by the reducing section 1-7. The width of the feed inlet section 1-8 is smaller than that of the receiving section 1-6, and the width of the reducing section 1-7 gradually decreases from the receiving section 1-6 to the feed inlet section 1-8. A butt plate 1-9 is provided at the edge of the feed inlet of the feed inlet section 1-8. A square flange is welded at the connection with the smelting furnace, and the butt plate 1-9 is connected to the flange at the connection with the smelting furnace by a bolt assembly. Support legs 4 are provided at the bottom of the body 1.

[0023] like Figure 2 and Figure 3 As shown, the main body 1 structurally includes an outer shell 1-1. A 65mm thick refractory brick layer 1-2 is provided on the bottom surface of the inner part of the outer shell 1-1. The refractory brick layer 1-2 serves to insulate against heat, reduce the temperature of the outer shell 1-1, and extend its service life. Above the refractory brick layer 1-2 is a 20mm thick aluminosilicate fiberboard 1-3. The aluminosilicate fiberboard 1-3 also serves to insulate against heat, extend the service life of the outer shell 1-1, and prevent deformation. A chute lining 1-4 is provided on the aluminosilicate fiberboard 1-3. A casting layer 1-5, formed by pouring high-temperature resistant castable refractory material, is provided in the gap between the chute lining 1-4, the outer shell 1-1, and the aluminosilicate fiberboard 1-3.

[0024] In this embodiment, the outer shell 1-1 is made of heat-resistant steel in sections welded together, with a thickness of 20mm.

[0025] In this embodiment, the chute lining 1-4 is integrally formed by casting high-temperature resistant material (50CF castable). The outer surface of the chute lining 1-4 is uniformly sprayed with a layer of boron nitride high-temperature resistant coating with a thickness of 90mm. The integral molding design allows the chute lining 1-4 to be directly broken and replaced with a new chute lining 1-4 when it is damaged, which is faster than partial repair and avoids downtime due to the inability to feed materials caused by excessive maintenance time.

[0026] In this embodiment, the casting layer 1-5 is cast using 50CF high-strength castable, with a thickness of 120mm. The casting layer 1-5 can serve as heat insulation and fix the chute lining 1-4.

[0027] In this embodiment, the tail of the main body 1 is raised by 20° relative to the inlet. Raising the tail can accelerate the flow of molten aluminum and prevent the molten aluminum from solidifying at the inlet, thus avoiding problems such as difficult cleaning and a smaller inlet.

[0028] Combination Figure 1 , Figure 2As shown, a chute edge 2 is provided on the upper edge of the outer shell 1-1. The chute edge 2 is fixedly connected to the upper edge of the outer shell 1-1, the casting layer 1-5, and the chute lining 1-4. A 500mm high anti-splash plate 3 is welded on the chute edge 2. The anti-splash plate 3 is located on the opposite side of the outer shell 1-1 and the feed port and on one side of the outer shell 1-1 to prevent aluminum liquid from splashing outside during feeding and causing safety hazards.

[0029] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A high-temperature resistant chute for feeding a 25T smelting furnace, characterized in that: The device includes a body (1), which includes an outer shell (1-1). A refractory brick layer (1-2) is provided on the bottom surface inside the outer shell (1-1). An aluminum silicate fiber board (1-3) is provided above the refractory brick layer (1-2). A chute lining (1-4) is provided on the aluminum silicate fiber board (1-3). A casting layer (1-5) is provided in the gap formed between the chute lining (1-4) and the outer shell (1-1) and the aluminum silicate fiber board (1-3).

2. The high-temperature resistant chute for feeding a 25T smelting furnace according to claim 1, characterized in that: The outer shell (1-1) is made of heat-resistant steel and welded in sections.

3. The high-temperature resistant chute for feeding a 25T smelting furnace according to claim 1, characterized in that: The chute lining (1-4) is a one-piece molded design.

4. The high-temperature resistant chute for feeding a 25T smelting furnace according to claim 1, characterized in that: The tail of the main body (1) is raised by 20° relative to the inlet.

5. The high-temperature resistant chute for feeding a 25T smelting furnace according to claim 1, characterized in that: The upper edge of the outer shell (1-1) is provided with a chute edge (2), which is fixedly connected to the upper edge of the outer shell (1-1), the casting layer (1-5), and the chute lining (1-4). A splash guard (3) is provided on the chute edge (2).

6. The high-temperature resistant chute for feeding a 25T smelting furnace according to claim 5, characterized in that: The splash guard (3) is located on the opposite side and one side of the outer shell (1-1) and the inlet.

7. The high-temperature resistant chute for feeding a 25T smelting furnace according to claim 1, characterized in that: The main body (1) includes a receiving section (1-6), a variable diameter section (1-7), and an inlet section (1-8). The receiving section (1-6) and the inlet section (1-8) are connected by the variable diameter section (1-7). The width of the inlet section (1-8) is smaller than that of the receiving section (1-6), and the width of the variable diameter section (1-7) gradually decreases from the receiving section (1-6) to the inlet section (1-8). The feed inlet section (1-8) has a butt plate (1-9) at its feed inlet edge, and the butt plate (1-9) is connected to the smelting furnace by a bolt assembly.

8. The high-temperature resistant chute for feeding a 25T smelting furnace according to claim 1, characterized in that: The bottom of the main body (1) is provided with support legs (4).

Images