Tunnel kiln device for ore sintering

Abstract

The utility model relates to the technical field of sintering equipment, in particular to an ore sintering tunnel kiln device which comprises a tunnel kiln, a sintering trolley is arranged below the tunnel kiln, the sintering trolley is connected above a trolley track in a sliding mode, the trolley track is laid on the ground, a sintering material layer is laid above the sintering trolley, and the sintering material layer is arranged above the sintering trolley. A closed space is formed between the tunnel kiln and the sintering pallet and used for gas combustion. The tunnel kiln device for ore sintering has the advantages that the silicon carbide plates are used as the suspended ceiling and the side wall fixing structure bricks of the tunnel kiln, and the rock wool is arranged on the top of the suspended ceiling of the silicon carbide plates and in the middle of the side wall fixing structure bricks for heat preservation. Therefore, the kiln has the advantages of light weight, high temperature resistance and good heat preservation and sealing performance. Energy is saved, the environment is protected, and the service life of the kiln is greatly prolonged; the problem that a traditional tunnel type sintering machine is poor in thermal insulation effect is further solved, and the thermal insulation effect of tunnel type sintered bricks can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of sintering equipment, in particular to a tunnel furnace device for ore sintering. Background Art

[0002] The sintering machine is suitable for the sintering operation of large-scale ferrous metallurgical sintering plants, and is mainly suitable for the sintering treatment of iron ore powder in large and medium-sized sintering plants.

[0003] In the prior art, the traditional tunnel sintering machine has a large tunnel furnace and a heavy furnace body. After long-term high-temperature sintering, the hanging bricks are easily damaged. In addition, the traditional tunnel sintering machine has a poor thermal insulation effect, which not only wastes energy and pollutes the environment, but also easily causes heat damage to the ceiling structure.

[0004] Therefore, we need a tunnel furnace device for ore sintering to solve the problem of poor thermal insulation effect of traditional tunnel sintering machines and improve the thermal insulation effect of tunnel sintered bricks. Utility Model Content

[0005] The utility model aims to provide a tunnel furnace device for ore sintering, so as to solve the problem of poor thermal insulation effect of traditional tunnel sintering machines and improve the thermal insulation effect of tunnel sintered bricks.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a tunnel furnace device for sintering ore, comprising a tunnel furnace, a sintering trolley is provided at the bottom of the tunnel furnace, the sintering trolley is slidably connected to the top of the trolley track, the trolley track is laid on the ground, a sintering material layer is laid above the sintering trolley, a closed space is formed between the tunnel furnace and the sintering trolley for gas combustion, side wall hanging bricks are provided inside the tunnel furnace, a supporting steel frame is provided above the trolley track, a storage bin is fixed on the surface of the supporting steel frame, a gas pipeline is provided above the tunnel furnace, and one end of the gas pipeline extends into the closed space formed between the tunnel furnace and the sintering trolley.

[0007] Preferably, the supporting steel frames are provided with two groups, and the two groups of supporting steel frames are distributed at both ends of the tunnel furnace.

[0008] Preferably, the tunnel furnace is composed of side wall bricks, silicon carbide ceiling, blast chamber ceiling, side wall rock wool, ceiling steel frame, ceiling assembly, top rock wool and blast chamber, rock wool is laid above the silicon carbide ceiling for heat insulation, the middle of the side wall bricks is filled with side wall rock wool for heat insulation, and the ceiling steel frame is fixedly connected to the supporting steel frame; the side wall bricks are suspended under the ceiling steel frame, and the side wall bricks are provided with multiple groups, and the multiple groups of side wall bricks are respectively arranged around the tunnel furnace; the silicon carbide ceiling is suspended under the ceiling steel frame, and the silicon carbide ceiling is located on the upper side of the furnace of the tunnel furnace; the blast chamber ceiling is suspended under the ceiling steel frame, and the blast chamber ceiling is arranged on the upper side of the blast chamber.

[0009] Preferably, the gas pipeline consists of a gas nozzle, an ignition head, an ignition gas pipe, an ignition air pipe and a gas main pipe. The gas main pipe is located above the tunnel furnace, the gas nozzle is fixed at the bottom end of the gas main pipe, the ignition gas pipe and the ignition air pipe are both installed above the gas main pipe, and the ignition head is installed at the bottom end of the ignition gas pipe.

[0010] Preferably, the side wall hanging bricks are composed of a hanging plate fixing plate, a large side wall plate, a small side wall plate, a side wall bottom support plate, a side wall fixing pin and a side wall hanging plate; the large side wall plate, the small side wall plate and the side wall bottom support plate are assembled with each other to form an internally hollow side wall hanging brick, the side wall fixing pin is used to fix the large side wall plate and the small side wall plate, the hollow space inside the side wall hanging brick is filled with rock wool, the uppermost large side wall plate of the side wall hanging brick is hoisted under the side wall hanging plate, the side wall hanging plate is fixed on the hanging plate fixing plate, the hanging plate fixing plate is hoisted under the ceiling steel frame, and a gap is left between the large side wall plate and the small side wall plate when they are assembled to prevent them from being squeezed against each other due to thermal expansion.

[0011] Preferably, the silicon carbide ceiling is assembled by ceiling hooks, fixing nuts, ceiling connecting rods, circular hanging tubes, and ceiling panels. The ceiling panels are hung under the circular hanging tubes. The ceiling connecting rods pass through the center of the circular hanging tubes and are installed on the ceiling hooks and fixed with fixing nuts. The ceiling hooks are hung under the ceiling steel frame. The middle of the circular hanging tubes is filled with rock wool to prevent the flames from burning the ceiling connecting rods. The circular hanging tubes are set at a certain angle according to the inclination of the furnace roof.

[0012] Preferably, the large side wall plate, the small side wall plate, the side wall bottom supporting plate, the side wall fixing pin shaft, the side wall hanging plate, the circular hanging pipe and the ceiling plate are all made of silicon carbide.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] The tunnel furnace device for ore sintering proposed by the utility model adopts silicon carbide plates as the ceiling and side wall fixed structural bricks of the tunnel furnace, and rock wool is installed between the top of the silicon carbide plate ceiling and the side wall fixed structural bricks for insulation. As a result, the furnace has the advantages of light weight, high temperature resistance, and good insulation and sealing. It not only saves energy and protects the environment, but also greatly prolongs the service life of the furnace; it further solves the problem of poor insulation effect of traditional tunnel sintering machines and can improve the insulation effect of tunnel sintered bricks. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] Figure 2 This is a side view of the structure of the utility model;

[0017] Figure 3 This is a top view of the structure of the utility model;

[0018] Figure 4 This is a schematic diagram of the connection structure of the tunnel furnace and the gas pipeline of the utility model;

[0019] Figure 5 This is a schematic diagram of the connection structure between the gas pipeline and the side wall hanging bricks of the utility model;

[0020] Figure 6 This is a top view of the silicon carbide ceiling structure of the utility model;

[0021] Figure 7 This is a schematic diagram of the side wall hanging brick structure of the utility model;

[0022] Figure 8 This is a schematic diagram of the connection structure of the side wall bottom support plate, the side wall fixing pin shaft, and the side wall hanging plate of the utility model;

[0023] Fig. 9 This is a schematic diagram of the side wall fixing pin structure of the utility model;

[0024] Fig.10 This is a schematic diagram of the practical circular hanging pipe structure;

[0025] Fig.11 This is a schematic diagram of the structure of the ceiling hook of the utility model;

[0026] Fig.12 It is a schematic diagram of the structure of the ceiling board of the utility model.

[0027] In the figure: supporting steel frame 1, storage bin 2, tunnel furnace 3, gas pipeline 4, sintering trolley 5, trolley track 6, sintering material layer 7, side wall hanging bricks 8, silicon carbide ceiling 9, blast chamber ceiling 10, gas nozzle 11, ignition head 12, side wall rock wool 13, ceiling steel frame 14, ceiling assembly 15, top rock wool 16, ignition gas pipe 17, ignition air pipe 18, gas main pipe 19, blast chamber 20, hanging plate fixing plate 21, large side wall plate 22, small side wall plate 23, side wall bottom supporting plate 24, side wall fixing pin 25, side wall hanging plate 26, ceiling hook 27, fixing nut 28, ceiling connecting rod 29, round hanging pipe 30, ceiling plate 31. DETAILED DESCRIPTION

[0028] In order to make the purpose and technical solution of the utility model clearly and completely described, and the advantages more clearly understood, the embodiments of the utility model are further described in detail in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are part of the embodiments of the utility model, not all of the embodiments, and are only used to explain the embodiments of the utility model, and are not used to limit the embodiments of the utility model. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] See also Figures 1 to 4The utility model provides a technical solution: a tunnel furnace device for sintering ore, comprising a tunnel furnace 3, a sintering trolley 5 is provided below the tunnel furnace 3, the sintering trolley 5 is slidably connected above the trolley track 6, the trolley track 6 is laid on the ground, a sintering material layer 7 is laid above the sintering trolley 5, a closed space is formed between the tunnel furnace 3 and the sintering trolley 5 for gas combustion, a side wall hanging brick 8 is provided inside the tunnel furnace 3, a supporting steel frame 1 is provided above the trolley track 6, a material storage bin 2 is fixed on the surface of the supporting steel frame 1, a gas pipeline 4 is provided above the tunnel furnace 3, and one end of the gas pipeline 4 extends into the closed space formed between the tunnel furnace 3 and the sintering trolley 5; two groups of supporting steel frames 1 are provided, and the two groups of supporting steel frames 1 are distributed at both ends of the tunnel furnace 3; silicon carbide plates are used as ceiling and side wall fixed structure bricks of the tunnel furnace, and rock wool is installed between the top of the silicon carbide plate ceiling and the side wall fixed structure bricks for insulation. As a result, the furnace has the advantages of light weight, high temperature resistance, and good thermal insulation and sealing. It not only saves energy and protects the environment, but also greatly extends the service life of the furnace; it further solves the problem of poor thermal insulation effect of traditional tunnel sintering machines and can improve the thermal insulation effect of tunnel sintered bricks.

[0030] The tunnel furnace 3 is composed of side wall hanging bricks 8, silicon carbide ceiling 9, blast chamber ceiling 10, side wall rock wool 13, ceiling steel frame 14, ceiling assembly 15, top rock wool 16 and blast chamber 20. Rock wool 16 is laid on the silicon carbide ceiling 9 for heat insulation. The middle of the side wall hanging bricks 8 is filled with side wall rock wool 13 for heat insulation. The ceiling steel frame 14 is fixedly connected to the supporting steel frame 1; the side wall hanging bricks 8 are suspended under the ceiling steel frame 14, and the side wall hanging bricks 8 are provided with multiple groups, and the multiple groups of side wall hanging bricks 8 are respectively arranged around the tunnel furnace 3; the silicon carbide ceiling 9 is suspended under the ceiling steel frame 14, and the silicon carbide ceiling 9 is located at the tunnel furnace 3. The upper side of the furnace; the blast chamber ceiling 10 is suspended below the ceiling steel frame 14, and the blast chamber ceiling 10 is arranged on the upper side of the blast chamber 20; the gas pipeline 4 is composed of a gas nozzle 11, an ignition head 12, an ignition gas pipe 17, an ignition air pipe 18 and a gas main pipe 19, the gas main pipe 19 is located above the tunnel furnace 3, the gas nozzle 11 is fixed at the bottom end of the gas main pipe 19, the ignition gas pipe 17 and the ignition air pipe 18 are both installed above the gas main pipe 19, and the ignition head 12 is installed at the bottom end of the ignition gas pipe 17; when the sintering trolley 5 runs below the side storage bin 2, the storage bin 2 distributes the material for the sintering trolley 5. The gas pipeline 4 transports gas to the sealed space formed by the tunnel furnace 3 and the sintering trolley 5. After the gas in the ignition gas pipe 17 and the air in the ignition air pipe 18 are mixed, they are burned at the ignition nozzle 11 to ignite the gas in the furnace. The blast chamber 20 on the right side of the gas nozzle 11 provides hot air for combustion in the furnace. The side wall hanging bricks 8 of the tunnel furnace 3 are arranged on the inner side of the sintering trolley wall to isolate the furnace flame and prevent the trolley wall from being burned. The furnace flue gas flows out through the material layer under the action of the induced draft fan. The flue gas carries the heat in the furnace to sinter the raw materials laid at the bottom of the trolley.

[0031] The side wall hanging brick 8 is composed of a hanging plate fixing plate 21, a large side wall plate 22, a small side wall plate 23, a side wall bottom supporting plate 24, a side wall fixing pin 25 and a side wall hanging plate 26; the large side wall plate 22, the small side wall plate 23 and the side wall bottom supporting plate 24 are assembled to form an internally hollow side wall hanging brick 8, the side wall fixing pin 25 is used to fix the large side wall plate 22 and the small side wall plate 23, the hollow space inside the side wall hanging brick 8 is filled with rock wool, the uppermost large side wall plate 22 of the side wall hanging brick 8 is hoisted under the side wall hanging plate 26, the side wall hanging plate 26 is fixed on the hanging plate fixing plate 21, and the hanging plate fixing plate 21 is hoisted under the ceiling steel frame 14, and a gap is left between the large side wall plate 22 and the small side wall plate 23 when assembled to prevent them from being squeezed against each other due to thermal expansion; the silicon carbide ceiling 9 is composed of a ceiling hook 27, a fixing nut 28, a ceiling connecting rod 29, a circular hanging pipe 30, a ceiling The panels 31 are assembled, the ceiling panel 31 is hoisted under the circular hanging tube 30, the ceiling connecting rod 29 passes through the center of the circular hanging tube 30 and is installed on the ceiling hook 27 and fixed with a fixing nut 28, the ceiling hook 27 is hoisted under the ceiling steel frame 14, the middle of the circular hanging tube 30 is filled with rock wool to prevent the flame from burning the ceiling connecting rod 29, and the circular hanging tube 30 is set at a certain angle according to the inclination of the furnace roof; the large side wall panel 22, the small side wall panel 23, the side wall bottom supporting plate 24, the side wall fixing pin 25, the side wall hanging plate 26, the circular hanging tube 30, and the ceiling panel 31 are all made of silicon carbide; a gap is left when the large side wall panel 22 and the small side wall panel 23 are assembled to prevent them from being squeezed against each other due to thermal expansion; the circular hanging tube 30 is set at a certain angle according to the inclination of the furnace roof, and a groove is left at the supporting plate position to facilitate the clamping and firm connection with the notch of the ceiling panel 31, and directly assemble the inclined roof kiln. The ceiling panel 31 is provided with expansion joints to prevent damage due to thermal expansion.

[0032] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A tunnel furnace device for ore sintering, comprising a tunnel furnace (3), characterized in that: A sintering trolley (5) is provided below the tunnel furnace (3). The sintering trolley (5) is slidably connected to the top of a trolley track (6). The trolley track (6) is laid on the ground. A sintering material layer (7) is laid above the sintering trolley (5). A closed space is formed between the tunnel furnace (3) and the sintering trolley (5) for gas combustion. Side wall hanging bricks (8) are provided inside the tunnel furnace (3). A supporting steel frame (1) is provided above the trolley track (6). A material storage bin (2) is fixed on the surface of the supporting steel frame (1). A gas pipeline (4) is provided above the tunnel furnace (3). One end of the gas pipeline (4) extends into the closed space formed between the tunnel furnace (3) and the sintering trolley (5).

2. The tunnel furnace device for ore sintering according to claim 1, characterized in that: The supporting steel frames (1) are provided with two groups, and the two groups of supporting steel frames (1) are distributed at both ends of the tunnel furnace (3).

3. The tunnel furnace device for ore sintering according to claim 1, characterized in that: The tunnel furnace (3) is composed of side wall hanging bricks (8), silicon carbide ceiling (9), blast chamber ceiling (10), side wall rock wool (13), ceiling steel frame (14), ceiling assembly (15), top rock wool (16) and blast chamber (20), top rock wool (16) is laid above the silicon carbide ceiling (9) for heat insulation, the middle of the side wall hanging bricks (8) is filled with side wall rock wool (13) for heat insulation, and the ceiling steel frame (14) is fixedly connected to the supporting steel frame (1). The side wall hanging bricks (8) are suspended below the ceiling steel frame (14), and a plurality of side wall hanging bricks (8) are provided. The plurality of side wall hanging bricks (8) are respectively arranged around the tunnel furnace (3); the silicon carbide ceiling (9) is suspended below the ceiling steel frame (14), and the silicon carbide ceiling (9) is located on the upper side of the furnace of the tunnel furnace (3); the blast chamber ceiling (10) is suspended below the ceiling steel frame (14), and the blast chamber ceiling (10) is arranged on the upper side of the blast chamber (20).

4. The tunnel furnace device for ore sintering according to claim 1 is characterized in that: The gas pipeline (4) is composed of a gas nozzle (11), an ignition head (12), an ignition gas pipe (17), an ignition air pipe (18) and a gas main pipe (19). The gas main pipe (19) is located above the tunnel furnace (3). The gas nozzle (11) is fixed to the bottom end of the gas main pipe (19). The ignition gas pipe (17) and the ignition air pipe (18) are both installed above the gas main pipe (19). The ignition head (12) is installed at the bottom end of the ignition gas pipe (17).

5. The tunnel furnace device for ore sintering according to claim 3 is characterized in that: The side wall hanging brick (8) is composed of a hanging plate fixing plate (21), a large side wall plate (22), a small side wall plate (23), a side wall bottom supporting plate (24), a side wall fixing pin shaft (25) and a side wall hanging plate (26); the large side wall plate (22), the small side wall plate (23) and the side wall bottom supporting plate (24) are assembled to form a side wall hanging brick (8) with a hollow interior, and the side wall fixing pin shaft (25) is used to fix the large side wall plate (22), the small side wall plate (23) and the side wall bottom supporting plate (24). The hollow space inside the side wall plate (23) and the side wall hanging brick (8) is filled with rock wool, the uppermost large side wall plate (22) of the side wall hanging brick (8) is suspended below the side wall hanging plate (26), the side wall hanging plate (26) is fixed on the hanging plate fixing plate (21), and the hanging plate fixing plate (21) is suspended below the ceiling steel frame (14), and a gap is left between the large side wall plate (22) and the small side wall plate (23) when they are assembled to prevent them from being squeezed against each other due to thermal expansion.

6. The tunnel furnace device for ore sintering according to claim 5, characterized in that: The silicon carbide ceiling (9) is assembled from a ceiling hook (27), a fixing nut (28), a ceiling connecting rod (29), a circular hanging tube (30), and a ceiling plate (31); the ceiling plate (31) is suspended below the circular hanging tube (30); the ceiling connecting rod (29) passes through the center of the circular hanging tube (30) and is installed on the ceiling hook (27) and fixed by the fixing nut (28); the ceiling hook (27) is suspended below the ceiling steel frame (14); the middle of the circular hanging tube (30) is filled with rock wool to prevent the flame from burning the ceiling connecting rod (29); and the circular hanging tube (30) is set at a certain angle according to the inclination of the furnace roof.

7. The tunnel furnace device for ore sintering according to claim 6, characterized in that: The large side wall plate (22), the small side wall plate (23), the side wall bottom supporting plate (24), the side wall fixing pin shaft (25), the side wall hanging plate (26), the circular hanging pipe (30), and the ceiling plate (31) are all made of silicon carbide.

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