A sintering machine distribution system and a wet steam treatment device for a mixture ore bin thereof

Abstract

This utility model discloses a sintering machine material feeding system and its mixed material trough wet steam treatment device, relating to the field of sintering process technology. The mixed material trough wet steam treatment device includes: a gas collecting hood for sealing and collecting dust-laden wet steam; a wind hood for covering the trolley surface of the sintering machine; a gas conveying pipe located between the gas collecting hood and the wind hood, connecting the two; and an induced draft fan located in the gas conveying pipe for conveying the dust-laden wet steam into the wind hood. This device can introduce the dust-laden wet steam generated in the mixed material trough into the sintering material layer, reducing particulate matter escape while improving sintering efficiency.

Description

Technical Field

[0001] This utility model relates to the field of sintering process technology, and more specifically, to a wet steam treatment device for a mixed ore bin. Furthermore, this utility model also relates to a sintering machine material feeding system including the aforementioned wet steam treatment device for a mixed ore bin. Background Technology

[0002] The mixing bin is one of the core pieces of equipment in the sintering machine's material feeding system. It plays a role in storing and buffering materials during the sintering process, connecting the mixer and the sintering machine, and ensuring the continuity of sintering.

[0003] The mixed material in the mixing bins comes from the mixer in the previous process. Because preheated steam is sprayed inside the mixer, a large amount of dust-laden wet steam is generated. When this wet steam is released into the atmosphere, it causes a "white plume" phenomenon in the plant area, which not only affects the aesthetics of the environment but may also pollute the surrounding environment. Currently, the methods for treating the dust-laden wet steam in the mixing bins are relatively limited. Most methods rely on simple ventilation to reduce the concentration, but these cannot effectively solve the problems of "white plume" phenomenon and excessive dust. Utility Model Content

[0004] Therefore, the purpose of this utility model is to provide a wet steam treatment device for mixed material ore bins, which can introduce dust-laden wet steam generated in the mixed material bins into the sintering bed, thereby improving sintering efficiency while meeting ultra-low emission standards.

[0005] Another objective of this invention is to provide a sintering machine material feeding system that includes the above-mentioned mixed material trough wet steam treatment device.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A wet steam treatment device for mixed feed ore bins includes:

[0008] A gas collection hood is installed at the exhaust port of the mixed material trough to seal and collect dust-laden wet vapor.

[0009] A wind shield is used to cover the surface of the sintering machine trolley where the mixture is laid.

[0010] A gas supply pipe is located between the gas collection hood and the wind hood, connecting the two.

[0011] An induced draft fan is installed in the gas transmission pipeline to transport the dust-laden wet steam into the hood.

[0012] Preferably, the bottom end of the gas collecting hood is located above the mixed material trough, and the bottom end of the gas collecting hood is an open end connected to the exhaust port, the top end of the gas collecting hood is an open end connected to one end of the gas conveying pipe, and the diameter of the gas collecting hood gradually decreases from its bottom end to its top end.

[0013] Preferably, the bottom end of the hood is located above the surface of the trolley, and the bottom end of the hood is an open end, the top end of the hood is an open end connected to the other end of the gas transmission pipe, and the diameter of the hood gradually decreases from its bottom end to its top end.

[0014] Preferably, the interior of the wind shield is provided with multiple arc-shaped guide vanes arranged circumferentially to form a gradually expanding guide structure.

[0015] Preferably, the wind shield has a horizontal airflow guiding structure inside near its bottom end.

[0016] Preferably, the side wall of the wind shield located above the airflow guiding structure is connected to a short pipe that communicates with the interior of the wind shield.

[0017] Preferably, the two ends of the gas pipeline are connected to the gas collection hood and the wind hood respectively through a flange sealing structure.

[0018] Preferably, the gas pipeline is a pipe fitting made of corrosion-resistant material.

[0019] A sintering machine feeding system includes a mixed material bin, a sintering machine, and a wet steam treatment device for the mixed material bin as described in any one of the above.

[0020] The wet steam treatment device for the mixed material ore bin provided by this utility model is applied between the mixed material ore bin and the sintering machine. During the sintering process, the dust-laden wet steam generated in the mixed material ore bin is collected in the gas collection hood. Under the action of the induced draft fan, the dust-laden wet steam is transported to the hood through the gas transmission pipeline and diffuses into the sintering material layer (i.e., the material layer formed by the mixed material laid on the surface of the trolley). This can increase the moisture content of the sintering material layer. Since the specific heat of steam is 1.8 times that of dry air, by spraying steam on the sintering material layer, the specific heat of the air can be increased, thereby enhancing the heat exchange capacity, promoting the vertical sintering speed, and improving the sintering efficiency. At the same time, it can also effectively solve the dust and "white plume" phenomenon and improve the plant environment. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0022] Figure 1 This is an installation diagram of the wet steam treatment device for mixed material ore bins provided by this utility model.

[0023] Figure label:

[0024] 1-Mixed material bin; 2-Sintering machine; 3-Gas collection hood; 4-Wind hood; 5-Gas transmission pipeline; 6-Exhaust fan. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] The core of this utility model is to provide a wet steam treatment device for mixed material ore bins. This device can introduce the dust-laden wet steam generated in the mixed material ore bins into the sintering bed, thereby improving sintering efficiency while meeting ultra-low emission standards.

[0027] Another core aspect of this invention is to provide a sintering machine material feeding system that includes the aforementioned wet steam treatment device for mixed material ore bins.

[0028] It should be noted that in this embodiment, the orientation or positional relationship indicated by terms such as "upper" and "lower" is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation on this application. In addition, "first," "second," "third," and "fourth" are only used to describe effects and should not be construed as indicating or implying relative importance.

[0029] Please refer to Figure 1 This application provides a wet steam treatment device for a mixed material trough, including a gas collecting hood 3, a wind hood 4, a gas conveying pipe 5, and an induced draft fan 6. The gas collecting hood 3 is located at the exhaust port of the mixed material trough 1 and is used to seal and collect dust-laden wet steam; the wind hood 4 is installed above the trolley surface of the sintering machine 2 used for laying the mixed material; the gas conveying pipe 5 is located between the gas collecting hood 3 and the wind hood 4 and connects the two; the induced draft fan 6 is located in the gas conveying pipe 5 and is used to transport the dust-laden wet steam into the wind hood 4.

[0030] It should be added that the trolley surface of sintering machine 2 is used for laying the mixture to form a sintering layer. The sintering layer undergoes a physicochemical reaction under the high temperature treatment of sintering machine 2 and is eventually sintered into a block.

[0031] During the sintering process, the dust-laden wet steam generated in the mixed material trough 1 is collected in the gas collection hood 3. Under the action of the induced draft fan 6, the dust-laden wet steam is transported to the air hood 4 through the gas transmission pipe 5 and diffuses into the sintering material layer, increasing the moisture content of the sintering material layer. Since the specific heat of steam is 1.8 times that of dry air, by spraying steam on the sintering material layer, the specific heat of air can be increased, thereby enhancing the heat exchange capacity, promoting the vertical sintering speed, improving the sintering efficiency, and effectively solving the dust and "white plume" phenomenon, meeting the ultra-low emission standards, and improving the plant environment.

[0032] Preferably, the hood 4 is positioned close to the trolley, which allows the hood 4 to be located above and close to the sintering material layer, preventing dust-laden steam from dispersing in all directions and ensuring that all dust-laden steam is sprayed onto the sintering material layer, thereby effectively improving sintering efficiency.

[0033] Furthermore, to ensure that the air hood 4 is stably positioned above the sintering material layer, the air hood 4 is fixed to the sintering machine 2 by a bracket, which can firmly support the air hood 4 above the sintering material layer.

[0034] Regarding the specific connection method between the gas collecting hood 3 and the mixed material trough 1, as a preferred option, the bottom end of the gas collecting hood 3 is connected to the exhaust port of the mixed material trough 1 through a flange sealing structure.

[0035] Specifically, a first flange is provided at the bottom of the gas collecting hood 3, and a second flange is provided at the exhaust port of the mixed material trough 1. The first flange and the second flange are fastened together by fasteners (bolts / nuts), and there is a sealing gasket between the two flange faces of the first flange and the second flange, so that the gas collecting hood 3 is sealed on the exhaust port of the mixed material trough 1. Moreover, the flange sealing structure is resistant to high temperature and is not easy to fail, which would lead to leakage of dust-containing wet steam.

[0036] Based on the above embodiments, as a further preferred embodiment, the bottom end of the gas collecting hood 3 is located above the mixing ore trough 1, the bottom end of the gas collecting hood 3 is an open end connected to the exhaust port, and the top end of the gas collecting hood 3 is an open end connected to one end of the gas conveying pipe 5. Furthermore, the diameter of the gas collecting hood 3 gradually decreases from its bottom end to its top end. That is, the bottom end of the gas collecting hood 3 serves as the inlet for dust-laden wet steam, and the top end of the gas collecting hood 3 serves as the exhaust port for dust-laden wet steam. A gradually narrowing air passage can be formed from the bottom end and the top end of the gas collecting hood 3.

[0037] Understandably, dust-laden wet steam will naturally rise due to thermodynamic forces. The top of the dust collection hood 3 serves as the exhaust port, allowing the dust-laden wet steam to naturally accumulate there. The exhaust port at the top of the dust collection hood 3 can then discharge the wet steam, which helps reduce the energy consumption of the induced draft fan 6. Furthermore, the tapered air duct can accelerate the discharge of dust-laden wet steam, achieving efficient exhaust.

[0038] The gas collection hood 3 can be horn-shaped or cone-shaped, as long as the gas collection hood 3 has a tapering structure from its bottom to its top.

[0039] Based on the above embodiments, as a further preferred embodiment, the bottom end of the hood 4 is located above the surface of the trolley, and the bottom end of the hood 4 is an open end, while the top end of the hood 4 is an open end connecting to the other end of the air supply pipe 5. Furthermore, the diameter of the hood 4 gradually decreases from its bottom end to its top end. In other words, the top end of the hood 4 serves as the air inlet for dust-laden wet steam, and the bottom end serves as the air outlet for dust-laden wet steam. The hood 4 forms a gradually expanding air passage from its top and bottom ends. It is easy to see that the structure of the hood 4 is the same as the aforementioned air collection hood 3.

[0040] Understandably, the dust-laden wet steam is discharged along the gradually expanding air passage. The smaller air inlet allows the dust-laden wet steam to be compressed upon entry, enabling it to diffuse rapidly within the air hood 4. Furthermore, the larger exhaust port reduces discharge resistance, thus facilitating the rapid injection of the dust-laden wet steam into the sintering material layer. In addition, the structure of the air hood 4 is identical to that of the gas collecting hood 3, facilitating standardized manufacturing of the equipment.

[0041] It should be noted that the diameter of the top (air inlet) of the hood 4 is smaller than that of the bottom (exhaust outlet), which will cause the diffusion to be faster in the area near the central axis of the hood 4 and slower in the edge area. This will easily cause uneven discharge of dust-laden wet steam, that is, the dust-laden wet steam cannot enter the sintering material layer evenly, which will affect the sintering quality.

[0042] To ensure uniform entry of dust-laden wet steam into the sintering bed and improve sintering quality, as a further preferred embodiment, based on the above-described embodiments, the interior of the hood 4 is provided with multiple arc-shaped guide vanes arranged circumferentially to form a gradually expanding guide structure. It should be noted that the gradually expanding guide structure is not in contact with the inner circumference of the hood 4 but is spaced apart to allow the dust-laden wet steam to diffuse and exit along the edge area.

[0043] Therefore, the gradually expanding flow guiding structure can force the initially entering dust-laden wet steam to diffuse radially from the center, while the other part continues to diffuse along the center. Thus, the wind hood 4 can uniformly spray the dust-laden wet steam onto the sintering material layer, thereby improving the sintering quality.

[0044] It should also be noted that, in the sintering process, the dust-laden wet steam discharged from the mixed material trough 1 mainly refers to the mixture of dust and water vapor carried by the evaporation of moisture after the mixed material is heated during the sintering process.

[0045] To avoid the dust in the wet steam being concentrated at a certain point and affecting the sintering quality, as another preferred embodiment, the hood 4 is provided with a gradually expanding guide structure arranged vertically near its bottom, which effectively allows the wet steam to enter the sintering material layer evenly, thereby improving the sintering quality.

[0046] Understandably, the flow guiding structure is a grid-like structure made of 400mm-500mm wide steel plates arranged at certain intervals and with crossbars, which ensures that the dust-laden wet steam is evenly distributed on the sintering machine material surface. The type of flow guiding structure (i.e., the size of the grid) can be selected according to the requirements.

[0047] To facilitate cleaning of the airflow guiding structure, as a further preferred embodiment, the side wall of the air shroud 4 located above the airflow guiding structure is connected to a short pipe that communicates with the interior of the air shroud 4.

[0048] It is understandable that if the flow guide structure adopts a mesh structure, some dust will be retained on it. After the sintering operation is completed, gas can be blown into the interior of the wind hood 4 through a short pipe to clean the flow guide structure and facilitate subsequent work.

[0049] Based on the above embodiments, as a further preferred embodiment, the two ends of the gas pipeline 5 are respectively connected to the gas collection hood 3 and the wind hood 4 through flange sealing structures.

[0050] Specifically, the flange sealing structure includes two flanges, a gasket, and multiple fasteners. One end of the gas pipeline 5 has a first flange, and the top opening of the gas collecting hood 3 has a second flange. The first and second flanges are fastened together by multiple fasteners (bolts / nuts), and a gasket is placed between the two opposing flange faces to prevent dust-laden wet vapor from leaking from the connection between the gas collecting hood 3 and the gas pipeline 5. Similarly, the other end of the gas pipeline 5 is connected to the top opening of the hood 4 in the same manner to prevent dust-laden wet vapor from leaking from the connection between the hood 4 and the gas pipeline 5.

[0051] Therefore, using the aforementioned flange sealing structure to connect the gas pipeline 5 with the gas collecting hood 3 and the wind hood 4 can prevent the leakage of dust-laden wet steam. Moreover, the flange sealing structure is resistant to high temperatures, suitable for high-temperature wet steam, and is not prone to failure. This arrangement not only avoids environmental pollution but also ensures that all the wet steam in the dust-laden steam enters the sintering material layer through the wind hood 4, maximizing the utilization of wet steam and effectively improving sintering efficiency.

[0052] Based on the above embodiments, as a further preferred option, the gas transmission pipeline 5 is made of a corrosion-resistant material, such as stainless steel or fiberglass, to ensure the stability and safety of wet steam during the transmission process.

[0053] In summary, the wet steam treatment device for mixed feed troughs provided in this application has the following main advantages:

[0054] 1. Significant environmental benefits: Dust-laden wet steam enters the sintering material layer under the action of the fan, effectively solving the problems of dust and "white plume" phenomenon, meeting the ultra-low emission standards, and improving the plant environment.

[0055] 2. Improve sintering efficiency: Injecting wet steam into the sintering material layer increases the moisture content of the sintering material layer, increases the specific heat of the air, thereby enhancing the heat exchange capacity, promoting the vertical sintering speed, and improving the sintering efficiency.

[0056] 3. Improve sintering quality: Effectively and evenly introducing wet steam into the sintering material layer can increase the specific heat of air, thereby enhancing heat exchange capacity, promoting vertical sintering speed, improving sintering efficiency, and also improving sintering quality.

[0057] 4. Good economic performance: It has a simple structure, low operating costs, and a short investment recovery period, making it economically viable.

[0058] In addition to the aforementioned wet steam treatment device for mixed material troughs, this utility model also provides a sintering machine material feeding system, including the wet steam treatment device for mixed material troughs disclosed in the above embodiments, a mixed material trough 1, a sintering machine 2, and a mixer. The specific arrangement of the mixed material trough 1, the sintering machine 2, and the mixer is not the focus of this application. Please refer to the prior art. This article will not elaborate further.

[0059] It should be noted that in this specification, relational terms such as first and second are used only to distinguish one entity from several other entities, and do not necessarily require or imply any such actual relationship or order between these entities.

[0060] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0061] The above provides a detailed description of a sintering machine material feeding system and its wet steam treatment device for the mixed material trough provided by this utility model. Specific examples have been used to illustrate the principle and implementation of this utility model. The descriptions of the embodiments above are only for the purpose of helping to understand the method and core idea of ​​this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principle of this utility model, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A mixed ore bin wet steam treatment apparatus, characterized by, include: A gas collection hood (3) is installed at the exhaust port of the mixed material trough (1) to seal and collect dust-laden wet steam; The air hood (4) is used to cover the trolley surface of the sintering machine (2) for laying the mixture; A gas transmission pipe (5) is provided between the gas collection hood (3) and the wind hood (4) and connects the two; An induced draft fan (6) is installed in the gas transmission pipeline (5) to transport the dust-laden wet steam into the hood (4).

2. The mixed material bin wet steam processing apparatus according to claim 1, characterized by, The bottom end of the gas collecting hood (3) is located above the mixed material trough (1), and the bottom end of the gas collecting hood (3) is set as the open end connected to the exhaust port. The top end of the gas collecting hood (3) is set as the open end connected to one end of the gas conveying pipe (5), and the diameter of the gas collecting hood (3) gradually decreases from its bottom end to its top end.

3. The hybrid stock bin wet steam treatment apparatus of claim 1, wherein, The bottom end of the hood (4) is located above the surface of the trolley, and the bottom end of the hood (4) is an open end. The top end of the hood (4) is an open end connected to the other end of the gas transmission pipe (5), and the diameter of the hood (4) gradually decreases from its bottom end to its top end.

4. The hybrid stock bin wet steam treatment apparatus of claim 3, wherein, The interior of the wind shield (4) is provided with multiple arc-shaped guide vanes arranged along its circumference to form a gradually expanding guide structure.

5. The hybrid stock bin wet steam treatment apparatus of claim 1, wherein, The wind shield (4) has a horizontal airflow guiding structure inside near its bottom end.

6. The hybrid stock bin wet steam treatment apparatus of claim 5, wherein, The side wall of the wind shield (4) located above the flow guiding structure is connected to a short pipe that communicates with the interior of the wind shield (4).

7. The hybrid material bin wet steam treatment apparatus of claim 1, wherein, The two ends of the gas pipeline (5) are connected to the gas collection hood (3) and the wind hood (4) respectively through flange sealing structures.

8. The hybrid material bin wet steam treatment apparatus of claim 1, wherein, The gas pipeline (5) is made of corrosion-resistant material.

9. A sinter machine distribution system characterized by, It includes a mixed material trough (1), a sintering machine (2), and a wet steam treatment device for the mixed material trough as described in any one of claims 1 to 8.

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