A tunnel-type roaster

Abstract

The utility model provides a kind of tunnel type roaster, to solve the problem of existing tunnel type roaster furnace car, furnace lining easy damage. The present application includes base, exhaust pipe and steel structure, exhaust pipe is fixed in furnace body top, and furnace body side part is equipped with burner, and steel structure is fixed in furnace body outside, and further include insulating layer and coupon brick, and insulating layer is arranged in the inside of steel structure, and the inside of insulating layer is equipped with refractory layer, and the cross section of coupon brick is arc, and it is arranged below the insulating layer of furnace body top, and coupon brick two ends are equipped with trapezoidal support coupon brick and oblong support coupon brick, and base is equipped with track, and track is equipped with furnace car. The utility model solves the problem of tunnel type roaster side sealing masonry not durable, unreliable, ensures the low failure rate and low maintenance rate of equipment, prevents furnace body sealing part from breaking under the action of mechanical scratch and thermal shock and frequent failure.

Description

Technical Field

[0001] This utility model relates to a roasting furnace, specifically a roasting furnace with a double exhaust flue. Background Technology

[0002] The existing tunnel-type roasting furnace side sealing method uses a standard brick platform masonry structure. After long-term use, the standard bricks in the sealing part will frequently fail due to mechanical scratches and thermal shock. In addition, the existing tunnel-type roasting furnace car (also called trolley) is designed with carbon steel thick plates as protective plates and lightweight insulating bricks + high alumina bricks as furnace lining. In conventional offline casting, molten steel is poured under the mold shell below the furnace car. This structural design can meet the requirements. However, with the improvement of the process, online casting is becoming more and more common. When molten steel is poured on the trolley from above the mold shell, molten steel will leak onto the trolley surface. Affected by thermal erosion, the furnace car protective plates and furnace lining are frequently damaged, which seriously affects the equipment and production. Utility Model Content

[0003] The purpose of this utility model is to provide a tunnel-type roasting furnace to solve the problem of easy damage to the furnace car and furnace lining of existing tunnel-type roasting furnaces.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a tunnel-type roasting furnace, comprising a base, a flue pipe, and a steel structure. The flue pipe is fixed to the top of the furnace body, and burners are provided on the side of the furnace body. The steel structure is fixed to the outside of the furnace body. It also includes an insulation layer and arched bricks. The insulation layer is located inside the steel structure, and a refractory layer is provided inside the insulation layer. The cross-section of the arched bricks is arched and is located below the insulation layer at the top of the furnace body. Trapezoidal arched bricks and rectangular arched bricks are provided at both ends of the arched bricks. A track is provided on the base, and a furnace car is provided on the track.

[0005] The furnace car includes wheels, which are located at the bottom of a fiberboard. A waste sand layer is provided on the upper layer of the fiberboard, and high-alumina standard bricks are provided above the waste sand layer. Heat-resistant steel plates are provided at both ends of the furnace car.

[0006] The heat-resistant steel plate extends out of the fiberboard at the bottom and cooperates with the sealing slide, which is set on the side wall of the base.

[0007] The high-alumina standard bricks are spaced apart on the upper part of the waste sand layer, with gaps between adjacent high-alumina standard bricks.

[0008] Above the base, there are castable layers on both sides of the furnace car, and anchors are installed in the castable layers.

[0009] This invention solves the problems of the lack of durability and reliability of the side sealing masonry of tunnel-type roasting furnaces, ensuring a low failure rate and low maintenance rate of the equipment, and preventing the furnace body sealing parts from cracking and frequently failing under mechanical scraping and thermal shock. Attached Figure Description

[0010] Figure 1This is the front view of the present invention.

[0011] Figure 2 This is a schematic diagram of the furnace car structure.

[0012] Attached diagram labels: 1. Exhaust pipe; 2. Steel structure; 3. Insulation layer; 4. Arch brick; 5. Refractory layer; 6. Rectangular arch brick; 7. Trapezoidal arch brick; 8. Burner; 9. Furnace car; 9-1. High-alumina standard brick; 9-2. Waste sand layer; 9-3. Fiberboard; 9-4. Heat-resistant steel plate; 10. Sealing slide; 11. Castable refractory layer; 12. Anchor. Detailed Implementation

[0013] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0014] like Figure 1 and 2 As shown, a tunnel-type roasting furnace includes a base, a flue pipe 1, and a steel structure 2. The flue pipe 1 is fixed to the top of the furnace body, and burners 8 are provided on the side of the furnace body. The steel structure 2 is fixed to the outside of the furnace body. It also includes an insulation layer 3 and arch bricks 4. The insulation layer 3 is located inside the steel structure 2, and a refractory layer 5 is provided inside the insulation layer 3. The cross-section of the arch bricks 4 is arched and is located below the insulation layer at the top of the furnace body. Trapezoidal arch bricks 7 and rectangular arch bricks 6 are provided at both ends of the arch bricks 4. A track is provided on the base, and a furnace car 9 is provided on the track.

[0015] In this application, the trapezoidal support bricks 7 and rectangular support bricks 6 at both ends of the arch brick 4 can be combined to disperse the pressure on the furnace top borne by the arch brick, making the furnace body more stable and durable.

[0016] The furnace car 9 includes wheels, which are located at the bottom of fiberboard 9-3. A waste sand layer 9-2 is provided on the upper layer of fiberboard 9-3, and a high-alumina standard brick 9-1 is provided above the waste sand layer 9-2. Heat-resistant steel plates 9-4 are provided at both ends of the furnace car 9.

[0017] The heat-resistant steel plate 9-4 extends from the bottom of the fiberboard 9-3 and engages with the sealing slide 10, which is located on the side wall of the base. In this application, the sealing engagement between the sealing slide and the heat-resistant steel plate prevents furnace gas leakage.

[0018] The high-alumina standard bricks 9-1 are spaced apart on top of the waste sand layer 9-2, with gaps between adjacent high-alumina standard bricks 9-1. In this application, the high-alumina standard bricks do not need to be fully laid; they are placed on top of the waste sand layer 9-2 to provide support according to the mold shell support requirements. This structure ensures that when molten steel leaks, it falls onto the waste sand without damaging the underlying fiberboard; even if a large amount leaks to the edge of the furnace car, the heat-resistant steel plate will protect it and will not affect the normal operation of the furnace car; maintenance only requires replacing the waste sand. This significantly reduces maintenance time and costs.

[0019] Above the base, castable refractory layers 11 are provided on both sides of the furnace car 9, and anchors 12 are provided within the castable refractory layers 11. In this application, stainless steel anchors 12 are pre-embedded in the steel structure of the sealing part before the castable refractory layers 11 are poured, thereby increasing the mechanical strength and deformation resistance of the sealing part.

[0020] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A tunnel-type roasting furnace, comprising a base, a flue pipe (1), and a steel structure (2), wherein the flue pipe (1) is fixed to the top of the furnace body, burners (8) are provided on the side of the furnace body, and the steel structure (2) is fixed to the outside of the furnace body, characterized in that: It also includes an insulation layer (3) and a vault brick (4). The insulation layer (3) is set inside the steel structure (2). The inner side of the insulation layer (3) is provided with a refractory layer (5). The cross-section of the vault brick (4) is arched and is set below the insulation layer at the top of the furnace body. The vault brick (4) is provided with trapezoidal vault brick (7) and rectangular vault brick (6) at both ends. The base is provided with a track, and the furnace car (9) is provided on the track.

2. The tunnel-type roasting furnace according to claim 1, characterized in that: The furnace car (9) includes wheels, which are set at the bottom of the fiberboard (9-3). A waste sand layer (9-2) is provided on the upper layer of the fiberboard (9-3), and a high-alumina standard brick (9-1) is provided above the waste sand layer (9-2). Heat-resistant steel plates (9-4) are provided at both ends of the furnace car 9.

3. The tunnel-type roasting furnace according to claim 2, characterized in that: The heat-resistant steel plate (9-4) extends out of the fiberboard (9-3) and then cooperates with the sealing slide (10), which is set on the side wall of the base.

4. The tunnel-type roasting furnace according to claim 3, characterized in that: The high-alumina standard bricks (9-1) are spaced apart on the upper part of the waste sand layer (9-2), with a gap between two adjacent high-alumina standard bricks (9-1).

5. The tunnel-type roasting furnace according to any one of claims 1 to 4, characterized in that: Above the base, castable layers (11) are provided on both sides of the furnace car (9), and anchors (12) are provided in the castable layers (11).

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