CN219490111U

CN219490111U - Novel sintering machine

Info

Publication number: CN219490111U
Application number: CN202320356189.2U
Authority: CN
Inventors: 李胜周; 王全贵; 徐兆金; 徐超; 黄精亮; 钟吉冬
Original assignee: Guoming Ductile Iron Pipes Co Ltd
Current assignee: Guoming Ductile Iron Pipes Co Ltd
Priority date: 2023-03-01
Filing date: 2023-03-01
Publication date: 2023-08-08
Anticipated expiration: 2033-03-01

Abstract

The novel sintering machine is characterized in that the process gas of the novel sintering machine is gas which is input into a mixing fan cover through an air pipeline and a gas pipeline for mixing; the mixing fan cover is a shell-shaped piece with an opening at the lower part, the shell-shaped piece is composed of a top plate and surrounding plates, the inner cavity of the mixing fan cover is divided into a mixing cavity and a process gas cavity by a partition plate, the top plate is provided with an air inlet and a gas inlet, an air pipeline and a gas pipeline are respectively communicated with the mixing cavity through the air inlet and the gas inlet, a process gas outlet is arranged on the partition plate, an output pipeline is communicated with the mixing cavity through the process gas outlet, the other end of the output pipeline is not communicated with the outside, and a plurality of air outlet nozzles are arranged on the output pipeline; the air and gas inlets and the process gas outlet are respectively arranged at two ends of the mixing cavity, and a guide plate is arranged between the air and gas inlets and the process gas outlet. According to the sintering machine, the mixing fan cover is used for fully mixing air and gas input by the air pipeline and the gas pipeline, so that the problem of non-uniformity of sintering can be effectively solved.

Description

Novel sintering machine

Technical Field

The utility model relates to the technical field of metallurgical equipment, in particular to a novel sintering machine.

Background

The sintering machine is suitable for sintering operation of large-scale ferrous metallurgy sintering plants, and is mainly suitable for sintering treatment of iron ore powder in large-scale and medium-scale sintering plants. In steel production, sintering is one of the important processes, which provides a high quality raw material for blast furnace ironmaking. Sintering of metalliferous material, such as iron ore or manganese ore, in particular oxidized or carbonated ore, is carried out with the aid of a sintering machine. After the sinter mix consisting of metalliferous material, return material, solid fuel, additives, etc. is fed to the sintering pallet of the sintering machine, the sinter mix is ignited on its surface at the igniter, after which process gas, which may be fresh air, exhaust gas from the sinter cake cooler, air for pre-drying the sinter mix, a mixture of one or more of the above gases, is led through the sinter mix. The proportion of low-grade iron ore raw materials in a sintering plant is gradually increased, meanwhile, the cost of fossil fuel coke powder commonly used in the sintering process is high, the discharge pressure is high, and the cost and the discharge pressure can be effectively relieved by using alternative fuels, so that the problem of non-uniformity of sintering can be effectively solved by adding fuel gas into process gas at present, but the problem that the sintering effect is poor due to incomplete mixing of multiple gases is also easy to be caused, and the problem that how to completely mix the multiple gases to be used as the process gas to be conveyed to a sintering mixture is also important is solved.

Disclosure of Invention

In order to solve the problems, the utility model provides a novel sintering machine, which can fully mix air and gas input by an air pipeline and a gas pipeline through a mixing fan cover and can effectively improve the problem of non-uniformity of sintering.

The technical scheme of the utility model is as follows:

the process gas of the novel sintering machine is gas which is input into a mixing fan housing through an air pipeline and a gas pipeline for mixing; the mixing fan cover is a shell-shaped piece with an opening at the lower part, the shell-shaped piece is composed of a top plate and surrounding plates, the inner cavity of the mixing fan cover is divided into a mixing cavity and a process gas cavity by a partition plate, the top plate is provided with an air inlet and a gas inlet, the air pipeline and the gas pipeline are respectively communicated with the mixing cavity through the air inlet and the gas inlet, a process gas outlet is arranged on the partition plate, an output pipeline is communicated with the mixing cavity through the process gas outlet, the other end of the output pipeline is not communicated with the outside, and a plurality of air outlet nozzles are arranged on the output pipeline; the air and gas inlets and the process gas outlet are respectively arranged at two ends of the mixing cavity, and a guide plate is arranged between the air and gas inlets and the process gas outlet.

Further, the guide plates comprise an upper guide plate, a lower guide plate, a left guide plate and a right guide plate, and gaps are reserved between the upper guide plate, the lower guide plate, the left guide plate and the right guide plate and the upper surface, the lower surface, the left surface and the right surface of the mixing cavity respectively.

Further, at least one upper guide plate, one lower guide plate, one left guide plate and one right guide plate are respectively arranged in the mixing cavity.

Further, the guide plates are repeatedly arranged in the order of the upper guide plate, the lower guide plate, the left guide plate and the right guide plate.

The novel sintering machine is characterized in that the output pipeline is distributed in multiple S-shaped curves.

Further, the air outlet nozzles are uniformly distributed at the lower end of the output pipeline.

Further, the air pipe or the gas pipe is inserted into the middle-lower position of the mixing cavity.

The novel sintering machine further comprises an igniter, a sintering trolley, a suction box and a flue gas pipeline; the sintering material is placed on the sintering trolley, and the front portion of some firearm setting in sintering trolley top, the top of mixing fan housing setting in sintering trolley, suction box setting in sintering trolley's below, suction box and flue gas pipeline intercommunication.

Further, the flue gas duct communicates with a suction box via a suction pipe.

Further, an exhaust fan is arranged on the flue gas pipeline.

The utility model has the beneficial effects that:

according to the sintering machine, the air and the gas input by the air pipeline and the gas pipeline are fully mixed through the mixing fan cover, so that the problem of non-uniformity of sintering can be effectively solved; by arranging a plurality of groups of guide plates in the upper direction, the lower direction, the left direction and the right direction, the mixed gas has more mixing probability in the mixing cavity.

Drawings

The aspects and advantages of the present application will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the utility model.

In the drawings:

FIG. 1 is a schematic structural view of a mixing fan housing of a novel sintering machine according to an embodiment of the present utility model;

FIG. 2 is a cross-sectional view A-A of FIG. 1;

FIG. 3 is a schematic structural view of a novel sintering machine according to an embodiment of the present utility model;

the components represented by the reference numerals in the figures are:

the utility model comprises the following steps: 1. the air pipeline, 2, the gas pipeline, 3, the mixing fan housing, 3a, the coaming, 3b, the top plate, 3c, the baffle, 3d, the guide plate, 3d1, the upper guide plate, 3d2, the lower guide plate, 3d3, the left guide plate, 3d4 and the right guide plate; 4. output pipelines, 5, an air outlet nozzle, 6, an igniter, 7, sintered materials, 8, a sintering trolley, 9, a suction box, 10, a suction pipe, 11, a flue gas pipeline, 12 and an exhaust fan,

o, mixing cavity; p, process gas chamber.

Detailed Description

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings.

Example 1

The novel sintering machine shown in fig. 3 comprises an air pipeline 1, a gas pipeline 2, a mixing fan housing 3, an output pipeline 4, an igniter 6, a sintering trolley 8, a suction box 9 and a flue gas pipeline 11. The sintering material 7 is placed on the sintering pallet 8, the igniter 6 is arranged at the front part above the sintering pallet 8, the mixing fan housing 3 is arranged above the sintering pallet 8, the suction box 9 is arranged below the sintering pallet 8, and the suction box 9 is communicated with the flue gas pipeline 11. The flue gas duct 11 communicates with the suction box 9 via a suction pipe 10, and a suction fan 12 is provided on the flue gas duct 11.

As shown in fig. 1 and 2, the process gas of the novel sintering machine of the present embodiment is input into the mixing hood 3 through the air pipe 1 and the gas pipe 2 to be mixed.

The above-mentioned mixing fan housing 3 is a shell-shaped member with an opening at the lower part, which is composed of a top plate 3b and surrounding coamings 3a, the inner cavity of the mixing fan housing 3 is divided into a mixing cavity O and a process gas cavity P by a partition plate 3c, the top plate 3b is provided with air and gas inlets, the air pipeline 1 and the gas pipeline 2 are respectively communicated with the mixing cavity O through the air and gas inlets, and the air pipeline 1 or the gas pipeline 2 can be inserted into the middle and lower positions of the mixing cavity O.

A process gas outlet is formed in the partition plate 3c, an output pipeline 4 is communicated with the mixing cavity O through the process gas outlet, the other end of the output pipeline 4 is not communicated with the outside, and a plurality of air outlet nozzles 5 are arranged on the output pipeline 4; the air and gas inlets and the process gas outlet are respectively arranged at two ends of the mixing cavity O, and a deflector 3d is arranged between the air and gas inlets and the process gas outlet.

According to the sintering machine, the mixing fan cover is used for fully mixing air and gas input by the air pipeline and the gas pipeline, so that the problem of non-uniformity of sintering can be effectively solved. Specifically, the baffle 3d includes an upper baffle 3d1, a lower baffle 3d2, a left baffle 3d3 and a right baffle 3d4, and the upper baffle 3d1, the lower baffle 3d2, the left baffle 3d3 and the right baffle 3d4 are respectively spaced from the upper surface, the lower surface, the left surface and the right surface of the mixing chamber O only; preferably, at least one upper deflector 3d1, one lower deflector 3d2, one left deflector 3d3 and one right deflector 3d4 are respectively arranged in the mixing cavity O, and by arranging a plurality of groups of deflectors in all directions of up, down, left and right, the mixed gas has more mixing probability in the mixing cavity.

Further, the guide plates 3d are repeatedly arranged in the order of the upper guide plate 3d1, the lower guide plate 3d2, the left guide plate 3d3 and the right guide plate 3d 4.

In order to ensure that the process gas can be uniformly discharged in the process gas cavity P, the output pipeline 4 is distributed in multiple S-bends, and further, the gas outlet nozzles 5 are uniformly distributed at the lower end of the output pipeline 4.

According to the sintering machine, air and gas input by the air pipeline and the gas pipeline are fully mixed through the mixing fan cover, the problem of non-uniformity of sintering can be effectively solved, and more mixing probabilities are provided for mixed gas in the mixing cavity by arranging a plurality of groups of guide plates in the upper direction, the lower direction, the left direction and the right direction.

The foregoing is only illustrative of the preferred embodiments of the present utility model, and any modifications, equivalents, improvements and others that fall within the spirit and principles of the present utility model are intended to be included within the scope of the present utility model.

Claims

1. The novel sintering machine is characterized in that process gas of the novel sintering machine is input into a mixing fan housing (3) through an air pipeline (1) and a gas pipeline (2) for mixing; the mixing fan cover (3) is a shell-shaped piece with an opening at the lower part and composed of a top plate (3 b) and surrounding plates (3 a), the inner cavity of the mixing fan cover (3) is divided into a mixing cavity (O) and a process gas cavity (P) by a partition plate (3 c), the top plate (3 b) is provided with an air inlet and a gas inlet, the air pipeline (1) and the gas pipeline (2) are respectively communicated with the mixing cavity (O) through the air inlet and the gas inlet, a process gas outlet is formed in the partition plate (3 c), an output pipeline (4) is communicated with the mixing cavity (O) through the process gas outlet, the other end of the output pipeline (4) is not communicated with the outside, and a plurality of air outlet nozzles (5) are arranged on the output pipeline (4); the air and gas inlets and the process gas outlet are respectively arranged at two ends of the mixing cavity (O), and a guide plate (3 d) is arranged between the air and gas inlets and the process gas outlet.

2. The novel sintering machine according to claim 1, wherein the guide plate (3 d) comprises an upper guide plate (3 d 1), a lower guide plate (3 d 2), a left guide plate (3 d 3) and a right guide plate (3 d 4), and the upper guide plate (3 d 1), the lower guide plate (3 d 2), the left guide plate (3 d 3) and the right guide plate (3 d 4) are respectively spaced from the upper surface, the lower surface, the left surface and the right surface of the mixing chamber (O) only.

3. The novel sintering machine according to claim 2, wherein at least one upper deflector (3 d 1), one lower deflector (3 d 2), one left deflector (3 d 3) and one right deflector (3 d 4) are respectively arranged in the mixing chamber (O).

4. A new type of sintering machine according to claim 3, characterized in that the guide plates (3 d) are repeatedly arranged in the order of upper guide plate (3 d 1), lower guide plate (3 d 2), left guide plate (3 d 3) and right guide plate (3 d 4).

5. A new sintering machine according to claim 1, characterized in that the output duct (4) is in a multiple "S" bend distribution.

6. The novel sintering machine according to claim 5, wherein the air outlet nozzles (5) are uniformly distributed at the lower end of the output pipeline (4).

7. A new sintering machine according to claim 1, characterized in that the air duct (1) or the gas duct (2) is inserted in the mixing chamber (O) in a mid-lower position.

8. A new sintering machine according to claim 1, characterized in that it further comprises an igniter (6), a sintering pallet (8), a suction box (9) and a flue gas duct (11); the sintering material (7) is placed on the sintering trolley (8), the igniter (6) is arranged at the front part above the sintering trolley (8), the mixing fan housing (3) is arranged above the sintering trolley (8), the suction box (9) is arranged below the sintering trolley (8), and the suction box (9) is communicated with the flue gas pipeline (11).

9. A new sintering machine according to claim 8, characterized in that the flue gas duct (11) communicates with the suction box (9) via a suction pipe (10).

10. A new sintering machine according to claim 8, characterized in that an exhaust fan (12) is arranged on the flue gas duct (11).