A sintering fuel dust removal cloth device

Abstract

This utility model belongs to the field of metallurgy and discloses a fuel dust collection device for sintering, including a fuel dust collection hopper, a metering and conveying unit, and a surface layer distribution mechanism. The fuel dust collection hopper is located downstream of the multi-roller distributor and upstream of the ignition furnace along the running direction of the sintering machine trolley. The discharge port at the bottom of the fuel dust collection hopper is connected to the metering and conveying unit. The inlet of the surface layer distribution mechanism is connected to the discharge port of the metering and conveying unit. The surface layer distribution mechanism is used to evenly spread the received fuel dust collection ash along the width direction of the sintering machine trolley onto the surface layer of the mixture distributed by the multi-roller distributor. A mixing mechanism for turning and mixing the surface material and a pressing mechanism for controlling the flatness of the material layer are sequentially provided between the downstream of the surface layer distribution mechanism and the upstream of the ignition furnace. This solves the technical problem that fine-grained fuel dust collection ash and fuel particles smaller than 0.5mm do not have time to burn during the sintering process.

Description

Technical Field

[0001] This utility model belongs to the field of metallurgy and relates to a dust removal and ash distribution device for sintering fuel. Background Technology

[0002] The fine-grained fuel dust and over-crushed fuel particles smaller than 0.5mm generated during the crushing process of sintering fuel are not burned in time during the sintering process and are drawn into the exhaust gas during the drying process. They fail to play an effective combustion role, resulting in high fuel consumption, high residual carbon content in the exhaust gas, and natural agglomeration of the electrostatic precipitator at the machine head due to the large amount of residual carbon. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this utility model provides a fuel dust collection and ash distribution device for sintering, which solves the technical problem that fine-grained fuel dust and fuel particles smaller than 0.5mm do not have time to burn during the sintering process.

[0004] The technical solution provided by this utility model is as follows:

[0005] This utility model provides a fuel dust removal ash distribution device for sintering, including a fuel dust removal ash bin, a metering and conveying unit, and a surface distribution mechanism. The fuel dust removal ash bin is located downstream of the multi-roller distributor and upstream of the ignition furnace along the running direction of the sintering machine trolley. The discharge port at the bottom of the fuel dust removal ash bin is connected to the metering and conveying unit. The inlet of the surface distribution mechanism is connected to the discharge port of the metering and conveying unit. The surface distribution mechanism is used to evenly distribute the received fuel dust removal ash along the width direction of the sintering machine trolley onto the surface layer of the mixture distributed by the multi-roller distributor. A mixing mechanism for turning and mixing the surface material and a pressing mechanism for controlling the flatness of the material layer are sequentially provided between the downstream of the surface distribution mechanism and the upstream of the ignition furnace.

[0006] Furthermore, the metering and conveying unit includes a star feeder, an electronic belt scale, and a screw feeder connected in sequence. The inlet and outlet of the star feeder are respectively connected to the bottom of the fuel dust removal ash silo and the input end of the electronic belt scale. The output end of the electronic belt scale is connected to the inlet of the screw feeder, and the outlet of the screw feeder is connected to the inlet of the surface material distribution mechanism.

[0007] Furthermore, the surface material feeding mechanism is a roller feeder, and the signal output terminal of the speed control module of the roller feeder is connected to the signal input terminal of the running speed detection module of the sintering machine trolley. The thickness of the fuel dust layer on the surface of the mixture is less than 10mm.

[0008] Furthermore, the outer surface of the roller of the roller fabrication machine is covered with a wear-resistant layer.

[0009] Furthermore, the mixing mechanism consists of 3-5 sets of parallel toothed rollers, the surface of which is provided with serrated protrusions, and adjacent toothed rollers rotate in opposite directions.

[0010] Furthermore, the pressing mechanism is a height-adjustable flat plate, and there is a gap between the flat plate and the material surface of the sintering machine trolley.

[0011] Furthermore, it also includes a pneumatic conveying pipeline, the outlet of which is connected to the feed inlet at the top of the fuel dust ash buffer silo.

[0012] Furthermore, the multi-roller fabric feeder has 9 rollers.

[0013] Beneficial effects

[0014] This invention achieves precise and independent laying of fuel dust on the surface of the mixture by setting a fuel dust hopper and a matching metering and conveying unit and a surface spreading mechanism downstream of the multi-roller distributor. Combined with the subsequent mixing and pressing mechanism, it effectively improves the concentration and uniformity of the fuel dust on the upper part of the material layer, significantly improves the combustion efficiency of the surface fuel, reduces solid fuel consumption, helps improve the quality and yield of sintered ore, and makes full use of dust ash resources.

[0015] This invention utilizes a fuel dust removal and ash distribution device to remove dust from sintered fine-particle fuels and fuels smaller than 0.5mm. This overcomes the problems of high residual carbon content in the exhaust gas and natural agglomeration caused by excessive residual carbon in the electrostatic precipitator when fine-particle fuels are mixed and sintered. The device distributes the fine-particle fuel in the sintering micro-negative pressure ignition section onto the surface of the mixture after it has been distributed by a multi-roller distributor. After passing through a mixing mechanism and a pressing mechanism, the fuel enters the ignition furnace for ignition, which can effectively burn the fuel, reduce gas consumption, and achieve energy saving and consumption reduction in sintering. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a sintering fuel dust removal ash cloth device according to the present invention;

[0017] Figure 2 This is a side view of a sintering fuel dust removal ash cloth device according to the present invention.

[0018] Explanation of reference numerals in the attached diagram: 1. Fuel dust silo; 2. Rotary feeder; 3. Electronic belt scale; 4. Screw feeder; 5. Roller feeder; 6. Sintering machine trolley. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and should not be used to limit the scope of protection of the present invention.

[0020] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0021] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0022] Example 1

[0023] This utility model provides a sintering fuel dust collection device, including a fuel dust collection hopper 1, a metering and conveying unit, and a surface material distribution mechanism. The fuel dust collection hopper 1 is located downstream of the multi-roller distributor and upstream of the ignition furnace along the running direction of the sintering machine trolley 6. The discharge port at the bottom of the fuel dust collection hopper 1 is connected to the metering and conveying unit. The inlet of the surface material distribution mechanism is connected to the discharge port of the metering and conveying unit. The surface material distribution mechanism is used to evenly spread the received fuel dust collection ash along the width direction of the sintering machine trolley 6 on the surface layer of the mixture distributed by the multi-roller distributor. A mixing mechanism for turning and mixing the surface material and a pressing mechanism for controlling the flatness of the material layer are sequentially provided between the downstream of the surface material distribution mechanism and the upstream of the ignition furnace.

[0024] This invention achieves precise and independent laying of fuel dust on the surface of the mixture by setting a fuel dust hopper and a matching metering and conveying unit and a surface spreading mechanism downstream of the multi-roller distributor. Combined with the subsequent mixing and pressing mechanism, it effectively improves the concentration and uniformity of the fuel dust on the upper part of the material layer, significantly improves the combustion efficiency of the surface fuel, reduces solid fuel consumption, helps improve the quality and yield of sintered ore, and makes full use of dust ash resources.

[0025] Example 2

[0026] This utility model embodiment provides a fuel dust removal ash feeding device for sintering, including a fuel dust removal ash bin 1, a metering and conveying unit, and a surface feeding mechanism. The metering and conveying unit includes a rotary feeder 2, an electronic belt scale 3, and a screw feeder 4 connected in sequence. The fuel dust removal ash bin 1 is located downstream of the multi-roller feeder and upstream of the ignition furnace along the running direction of the sintering machine trolley 6. The inlet of the rotary feeder 2 is connected to the outlet at the bottom of the fuel dust removal ash bin 1, and the outlet of the rotary feeder 2 is connected to the input end of the electronic belt scale 3. The output end of the electronic belt scale 3 is connected to the inlet of the screw feeder 4. Specifically, the electronic belt scale 3 controls the fuel dust removal ash feeding rate, which is controlled at about 1 t / h. The outlet of the screw feeder 4 is connected to the... The surface material feeding mechanism is used to evenly spread the received fuel dust along the width of the sintering machine trolley 6 onto the surface of the mixture that has been fed by the multi-roller feeder. Downstream of the surface material feeding mechanism and upstream of the ignition furnace, there are sequentially arranged a mixing mechanism for turning and mixing the surface material and a pressing mechanism for controlling the flatness of the material layer. Specifically, the fuel dust is transported to the fuel dust silo 1 upstream of the ignition furnace. The fuel dust is unloaded by the star feeder 2 and transported to the screw feeder 4 by the electronic belt scale 3. The fuel dust is distributed on the surface material feeding mechanism by the screw feeder 4. The material is spread on the surface of the mixture on the sintering machine trolley 6 that has been fed by the multi-roller feeder, and then enters the ignition furnace for ignition and sintering after being operated by the mixing mechanism and the pressing mechanism.

[0027] In this embodiment, the surface material feeding machine is a roller feeding machine 5. The signal output terminal of the rotation speed control module of the roller feeding machine 5 is connected to the signal input terminal of the running speed detection module of the sintering machine trolley 6. The thickness of the fuel dust ash layer on the surface of the mixture is within 10mm. Specifically, the thickness of the fuel dust ash on the surface of the mixture on the sintering machine trolley 6 is adjusted by the rotation speed of the roller feeding machine 5 combined with the running speed of the sintering machine trolley 5, and the thickness of the material is controlled within 10mm.

[0028] Specifically, the surface thickness of the mixture after passing through the multi-roller distributor is adjusted by the rotation speed of the roller distributor 5 combined with the running speed of the sintering machine trolley 6, and the thickness of the material is controlled within 10mm.

[0029] In this embodiment, the outer surface of the circular roller of the circular roller fabric feeder 5 is covered with a wear-resistant layer.

[0030] In this embodiment, the mixing mechanism consists of 3-5 sets of parallel toothed rollers, the surface of which is provided with serrated protrusions, and adjacent toothed rollers rotate in opposite directions.

[0031] In this embodiment, the pressing mechanism is a height-adjustable flat plate, and there is a gap between the flat plate and the material surface of the sintering machine trolley 6.

[0032] In this embodiment, a pneumatic conveying pipeline is also included, the outlet of which is connected to the feed inlet at the top of the fuel dust ash buffer silo.

[0033] In this embodiment, the multi-roller fabric distributor has 9 rollers.

[0034] This invention collects fuel dust from the fuel system's dust removal system. The fuel dust is transported to the fuel dust silo 1 via a pneumatic conveying pipeline. After passing through a star feeder 2, it is then conveyed to a screw feeder 4 via an electronic belt scale 3 and a roller feeder 5. The roller feeder 5 distributes the material along the width of the sintering machine trolley 6 onto the surface of the mixture after it has been distributed by the nine-roller feeder. The toothed rollers of the mixing mechanism turn the material surface over, ensuring full contact between the mixture and the surface fuel dust. The material surface is then flattened by a pressing mechanism and enters the ignition furnace for ignition and sintering. During the micro-negative pressure ignition process, the fine-grained fuel on the surface is fully burned, carrying heat to the lower part, while also reducing the amount of gas required for ignition.

[0035] The above description is merely a preferred embodiment of this utility model and does not constitute any limitation on this utility model. Any person skilled in the art can make many possible variations and modifications to the technical solution of this utility model, or modify it into equivalent embodiments, without departing from the scope of the technical solution of this utility model. Therefore, any modifications, equivalent changes, and alterations made to the above embodiments based on the technology of this utility model without departing from the scope of the technical solution of this utility model shall fall within the protection scope of this technical solution.

Claims

1. A sintering fuel ash material distributing device characterized by comprising: The system includes a fuel dust hopper, a metering and conveying unit, and a surface material distribution mechanism. The fuel dust hopper is located downstream of the multi-roller distributor and upstream of the ignition furnace along the sintering machine trolley's running direction. The discharge port at the bottom of the fuel dust hopper is connected to the metering and conveying unit. The inlet of the surface material distribution mechanism is connected to the discharge port of the metering and conveying unit. The surface material distribution mechanism is used to evenly spread the received fuel dust along the width direction of the sintering machine trolley onto the surface layer of the mixture distributed by the multi-roller distributor. Downstream of the surface material distribution mechanism and upstream of the ignition furnace, there are sequentially arranged a mixing mechanism for turning over and mixing the surface material and a pressing mechanism for controlling the flatness of the material layer.

2. The sintering fuel dedusting ash distributing device according to claim 1, characterized in that, The metering and conveying unit includes a star feeder, an electronic belt scale, and a screw feeder connected in sequence. The inlet and outlet of the star feeder are respectively connected to the bottom of the fuel dust silo and the input end of the electronic belt scale. The output end of the electronic belt scale is connected to the inlet of the screw feeder, and the outlet of the screw feeder is connected to the inlet of the surface material distribution mechanism.

3. The sintering fuel ash dusting device according to claim 1, wherein The surface material feeding mechanism is a roller feeder. The signal output terminal of the speed control module of the roller feeder is connected to the signal input terminal of the running speed detection module of the sintering machine trolley. The thickness of the fuel dust layer on the surface of the mixture is less than 10mm.

4. The sintering fuel dedusting ash distributing device according to claim 3, characterized in that, The outer surface of the roller of the roller cloth feeder is covered with a wear-resistant layer.

5. The sintering fuel ash dusting device according to claim 1, wherein The mixing mechanism consists of 3-5 sets of parallel toothed rollers, with serrated protrusions on the surface of the toothed rollers, and adjacent toothed rollers rotating in opposite directions.

6. The sintering fuel ash dusting device according to claim 1, wherein The pressing mechanism is a height-adjustable flat plate, and there is a gap between the flat plate and the material surface of the sintering machine trolley.

7. The sintering fuel dust removal ash cloth device according to claim 1, characterized in that, It also includes a pneumatic conveying pipeline, the outlet of which is connected to the feed inlet at the top of the fuel dust ash buffer silo.

8. The sintering fuel dust removal and ash cloth device according to claim 1, characterized in that, The multi-roller fabric feeder has 9 rollers.

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