Rod wire on-line dust removal method and rod wire production method

Abstract

The application provides a kind of bar wire on-line dust removal method and bar wire production method, belong to the technical field of rolling steel, including the following steps: in roughing area, set up air volume dust collection treatment system, in the medium rolling area, set up water mist dust suppression air volume dust collection combined treatment system, in finish rolling area, set up water mist dust suppression treatment system;In the bar wire production process, roughing area is treated by air volume dust collection treatment system, dust suppression and dust collection treatment are carried out on the medium rolling area by water mist dust suppression air volume dust collection combined treatment system, dust suppression treatment is carried out on the finish rolling area by water mist dust suppression treatment system, to complete the dust treatment of the bar wire production line. By using the application, the problems of high cost and low efficiency when using large air volume dust collector, poor dust removal effect and easy to corrode surrounding equipment or instruments when using spray dust fall in the prior art can be solved.

Description

Technical Field

[0001] This invention relates to the field of steel rolling technology, and more specifically, to an online dust removal method for bars and wire rods and a method for producing bars and wire rods. Background Technology

[0002] Bar and wire rod production lines are characterized by numerous dust-generating points, wide coverage, and high humidity of smoke and dust. Furthermore, the movement of the rolling mill and the inability to obstruct the operator's view ultimately lead to difficulties in dust collection and filtration.

[0003] Dust removal technology in the steel rolling industry has been developing for many years, but it has mainly been concentrated in strip and plate workshops where dust is relatively high. As environmental protection requirements become increasingly stringent, bar and wire rod production lines have begun to implement dust removal equipment, with the process typically involving dust collection hoods → filtration by dust collectors → emission through chimneys. In addition, there are cases of using water mist spraying for dust suppression, i.e., spraying water in various areas of the rolling line to reduce dust.

[0004] However, strip and plate mills have fewer concentrated passes, and the dust properties differ from those in bar and wire rod mills. Directly implementing high-volume dust collectors in bar and wire rod mills is costly and inefficient. Spray dust suppression can avoid the problem of high investment, but water vapor is greatly affected by temperature. When heated, it produces a large amount of water vapor, which not only results in poor dust removal but also easily corrodes surrounding equipment or instruments.

[0005] In summary, current dust removal solutions for bar and wire rod production lines suffer from several drawbacks. Using high-volume dust collectors results in high costs and low efficiency, while spray dust suppression has poor dust removal effects and generates a large amount of water vapor that can easily corrode surrounding equipment or instruments. Summary of the Invention

[0006] In view of the above problems, the purpose of this invention is to provide an online dust removal method and a bar and wire production method, so as to solve the problems in the existing dust removal schemes for bar and wire production lines, which have high cost and low efficiency when using large air volume dust collectors; and poor dust removal effect and the generation of a large amount of water vapor that can easily corrode peripheral equipment or instruments when using spray dust suppression.

[0007] This invention provides an online dust removal method for bar and wire rods, comprising the following steps:

[0008] Determine the roughing, intermediate, and finishing rolling zones of the bar and wire rod production line;

[0009] An air volume dust collection and treatment system is installed in the roughing rolling area; a water mist dust suppression and air volume dust collection combined treatment system is installed in the intermediate rolling area; and a water mist dust suppression system is installed in the finishing rolling area.

[0010] In the bar and wire rod production process, the dust collection system is used to collect dust in the roughing rolling area, the water mist dust suppression and air volume dust collection combined treatment system is used to suppress and collect dust in the intermediate rolling area, and the water mist dust suppression system is used to suppress dust in the finishing rolling area, so as to complete the dust removal of the bar and wire rod production line.

[0011] In addition, a preferred embodiment is that the air volume dust collection system includes a first dust collection hood and a first fan disposed at the rear of the first dust collection hood; a first dust suction opening is provided on the side of the first dust collection hood near the bar and wire production line.

[0012] Furthermore, a preferred embodiment is that the first dust collection hood is a triangular dust collection hood.

[0013] Furthermore, a preferred approach is to implement the airflow dust collection and treatment system during the installation of the airflow dust collection and treatment system in the roughing rolling area.

[0014] The first dust collection hood is placed over the bar and wire production line in the roughing area, with the first dust suction opening facing the bar and wire production line.

[0015] Furthermore, in a preferred embodiment, the water mist dust suppression and air volume dust collection combined treatment system includes a first spray device and a dust collection device; the first spray device is located above the bar and wire production line in the intermediate rolling zone; and the dust collection device is located above the spray device.

[0016] Furthermore, in a preferred embodiment, the dust collection device includes a rectangular second dust collection hood and a second fan disposed at the rear of the second dust collection hood; a second dust suction opening is provided on the side wall of the second dust collection hood.

[0017] Furthermore, a preferred approach is to implement a water mist dust suppression and air volume dust collection combined treatment system in the intermediate rolling zone.

[0018] The spray heads of the first spraying device are respectively arranged on both sides diagonally above the bar and wire production line in the intermediate rolling area;

[0019] The dust collection device is positioned above the first spray device, and the suction range of the second suction opening of the dust collection device covers the area of ​​water mist generated by the first spray device.

[0020] Furthermore, in a preferred embodiment, the water mist dust suppression system includes a second spray device; the second spray device includes a second spray head disposed above the finishing rolling area.

[0021] Furthermore, a preferred embodiment is that, during the production of the bar and wire rods, the dust collection treatment system for the roughing rolling area is used to collect dust, the combined water mist dust suppression and air volume dust collection treatment system is used to suppress and collect dust in the intermediate rolling area, and the water mist dust suppression treatment system is used to suppress dust in the finishing rolling area, all of which are carried out simultaneously.

[0022] The present invention also provides a method for producing bars and wires, wherein the online dust removal method for bars and wires as described above is used to treat the dust generated during the production of bars and wires.

[0023] As can be seen from the above technical solution, the online dust removal method and production method for bar and wire rods provided by this invention, based on the dust generation principles of the three different production areas of the bar and wire rod production line—roughing, intermediate, and finishing—deploys different dust removal systems accordingly, enabling targeted treatment of dust in different areas and achieving good dust removal results. In the roughing area, the coarse iron oxide scale is usually difficult to disperse, and the small amount of fine dust is mainly affected by hot airflow. Therefore, deploying an airflow dust collection system in the roughing area can effectively remove dust from this area. In the intermediate rolling area, a large amount of iron oxide scale is generated, and the high rolling speed causes dust to quickly disperse into the surrounding environment. Therefore, deploying a water mist dust suppression and airflow dust collection combined treatment system in this area can effectively suppress dust while preventing water vapor from affecting equipment in the workshop. In the finishing rolling area, the fine rolling pieces generate less dust, but the high rolling speed requires a large airflow to combat dust dispersion. Therefore, a water mist dust suppression system can effectively remove dust from this area. This invention can reduce investment and operating costs while ensuring the effectiveness of dust treatment. By eliminating dust collection in the high-speed (fine rolling) area and reducing dust collection in the medium-speed (medium rolling) area, the dust removal system can reduce the conventional calculated air volume by more than 50%. Combined with other investments such as pipelines, the dust removal investment can be reduced by 60%.

[0024] To achieve the foregoing and related objectives, one or more aspects of the invention include the features that will be described in detail below. The following description and accompanying drawings illustrate certain exemplary aspects of the invention. However, these aspects indicate only a few of the various ways in which the principles of the invention can be used. Furthermore, the invention is intended to encompass all such aspects and their equivalents. Attached Figure Description

[0025] Other objects and results of the invention will become more apparent and readily understood with reference to the following description taken in conjunction with the accompanying drawings, and with a more complete understanding of the invention.

[0026] Figure 1 A flowchart of an online dust removal method for bar and wire rods according to an embodiment of the present invention;

[0027] Figure 2This is a schematic diagram illustrating the principle of an online dust removal method for bar and wire rods according to an embodiment of the present invention. Detailed Implementation

[0028] In the following description, numerous specific details are set forth for illustrative purposes and to provide a thorough understanding of one or more embodiments. However, it will be apparent that these embodiments may also be implemented without these specific details.

[0029] In view of the aforementioned existing technologies, the dust removal solutions for bar and wire production lines have problems such as high cost and low efficiency when using large-volume dust collectors; and poor dust removal effect and the generation of a large amount of water vapor that can easily corrode surrounding equipment or instruments when using spray dust suppression. Therefore, an online dust removal method and bar and wire production method are proposed.

[0030] The specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0031] To illustrate the online dust removal method and bar / wire production method provided by this invention... Figure 1 The flowchart of an online dust removal method for bar and wire rods according to an embodiment of the present invention is shown; Figure 2 The principle of an online dust removal method for bar and wire rods according to an embodiment of the present invention is illustrated.

[0032] In the field of steel rolling technology, current dust removal solutions for bar and wire rod production lines generally involve using large-volume dust collectors or spray systems directly on the production line. Large-volume dust collectors are costly and inefficient. While spray dust suppression can address the high investment issue, the moisture content is greatly affected by temperature; when heated, it generates a large amount of water vapor, resulting in poor dust removal and potentially corroding surrounding equipment or instruments. Therefore, this invention proposes an online dust removal method for bar and wire rod production.

[0033] like Figure 1 Combination Figure 2 As shown in the figure, the online dust removal method for rods and wires provided by the present invention includes the following steps:

[0034] Step S1: Determine the roughing rolling area, intermediate rolling area, and finishing rolling area of ​​the bar and wire production line;

[0035] Step S2: Install an air volume dust collection system in the roughing rolling area, install a water mist dust suppression air volume dust collection combined treatment system in the intermediate rolling area, and install a water mist dust suppression system in the finishing rolling area.

[0036] Step S3: In the bar and wire rod production process, dust collection is carried out in the rough rolling area through an air volume dust collection system, dust suppression and collection are carried out in the intermediate rolling area through a water mist dust suppression and air volume dust collection combined treatment system, and dust suppression is carried out in the finishing rolling area through a water mist dust suppression treatment system, so as to complete the dust removal of the bar and wire rod production line.

[0037] It should be noted that the roughing, intermediate, and finishing rolling areas of the bar and wire rod production line in this invention are divided according to the bar and wire rod production process and equipment layout. The division of the roughing, intermediate, and finishing rolling areas is existing technology in this field, and will not be elaborated upon in this invention.

[0038] By analyzing the dust generation principles in the roughing, intermediate, and finishing rolling areas of a bar and wire rod production line, different dust removal systems are deployed for each area, ensuring targeted dust treatment and effective dust removal. In the roughing rolling area, the coarse iron oxide scale is difficult to disperse, and the small amount of fine dust is mainly affected by hot airflow. Therefore, deploying an airflow dust collection system in the roughing rolling area can effectively remove dust from this area. The intermediate rolling area generates a larger amount of iron oxide scale, and the high rolling speed causes dust to quickly disperse into the surrounding environment. Therefore, deploying a water mist dust suppression and airflow dust collection system in this area can effectively suppress dust while preventing moisture from affecting equipment. In the finishing rolling area, the fine rolled pieces generate less dust, but the high rolling speed requires a larger airflow to combat dust dispersion. Therefore, a water mist dust suppression system can effectively remove dust from this area. This invention can reduce investment and operating costs while ensuring the effectiveness of dust treatment. By eliminating dust collection in the high-speed (fine rolling) area and reducing dust collection in the medium-speed (medium rolling) area, the dust removal system can reduce the conventional calculated air volume by more than 50%. Combined with other investments such as pipelines, the dust removal investment can be reduced by 60%.

[0039] As a preferred embodiment of the present invention, the air volume dust collection system includes a first dust collection hood and a first fan disposed at the rear of the first dust collection hood; a first dust suction opening is provided on the side of the first dust collection hood near the bar and wire production line.

[0040] Specifically, the air volume dust collection system uses the negative pressure generated by the first fan inside the first dust collection hood to collect dust and achieve the effect of dust removal.

[0041] As a preferred embodiment of the present invention, the first dust collection hood is a triangular dust collection hood.

[0042] It should be noted that the first dust collection hood is preferably, but not limited to, a triangular dust collection hood. The iron oxide scale in the roughing rolling area is coarse, and the escaping dust is mainly affected by the primary dust formation process, so the escaping speed is not high. Using a triangular dust collection hood that occupies less space can collect the dust in the roughing rolling area.

[0043] As a preferred embodiment of the present invention, during the process of setting up the air volume dust collection and treatment system in the roughing rolling area, the first dust collection hood is covered above the bar and wire production line in the roughing rolling area, so that the first dust suction opening faces the bar and wire production line.

[0044] Specifically, along the length direction, the first dust collection hood is placed over the roughing rolling area to improve its dust collection effect in the roughing rolling area.

[0045] As a preferred embodiment of the present invention, the water mist dust suppression and air volume dust collection combined treatment system includes a first spraying device and a dust collection device.

[0046] The first spraying device is installed above the bar and wire production line in the intermediate rolling zone;

[0047] The dust collection device is installed above the spraying device.

[0048] Specifically, the intermediate rolling area produces a large amount of iron oxide scale, and the high rolling speed causes dust to quickly disperse into the surrounding environment. Therefore, the first dust suppression spray device can be set up in this area to suppress dust and press it down. A dust removal device can be set up in a certain area above the first spray device (set according to actual needs) to collect and treat water vapor, which can prevent water vapor from dispersing in the workshop.

[0049] As a preferred embodiment of the present invention, the dust collection device includes a rectangular second dust collection hood and a second fan disposed at the rear of the second dust collection hood; a second dust suction opening is provided on the side wall of the second dust collection hood.

[0050] Specifically, the second dust collection hood is preferably, but not limited to, rectangular. The second fan creates negative pressure inside the second dust collection hood to collect and treat water vapor.

[0051] As a preferred embodiment of the present invention, during the process of deploying a water mist dust suppression and air volume dust collection combined treatment system in the intermediate rolling area...

[0052] The spray heads of the first spraying device are respectively arranged on both sides diagonally above the bar and wire production line in the intermediate rolling area;

[0053] The dust collection device is positioned above the first spray device, and the suction range of the second suction opening of the dust collection device covers the area of ​​water mist generated by the first spray device.

[0054] Specifically, by placing the spray heads of the first spray device on both sides diagonally above the bar and wire production line in the intermediate rolling area, the dust generated by the bar and wire production line can be effectively sprayed and suppressed. By making the suction range of the second dust suction opening of the dust collection device cover the water mist generated by the first spray device, the water mist generated during the dust suppression process of the first spray device can be fully collected.

[0055] As a preferred embodiment of the present invention, the first dust collection hood and the second dust collection hood share the same dust outlet pipe or dust collector, so as to facilitate the unified treatment of dust collected from the roughing rolling area and the intermediate rolling area.

[0056] As a preferred embodiment of the present invention, the water mist dust suppression system includes a second spraying device; the second spraying device includes a second spray head disposed above the finishing rolling area.

[0057] Specifically, the fine rolling mill produces less dust due to its small size, but the rolling speed is high, requiring a large air volume to combat dust dispersion. Using dust collection and removal equipment is inefficient, so a second spray device is installed in this area for dust suppression.

[0058] As a preferred embodiment of the present invention, in the bar and wire rod production process, dust collection treatment is carried out in the roughing rolling area by means of an air volume dust collection treatment system, dust suppression and dust collection treatment is carried out in the intermediate rolling area by means of a water mist dust suppression air volume dust collection combined treatment system, and dust suppression treatment is carried out in the finishing rolling area by means of a water mist dust suppression treatment system.

[0059] Specifically, the roughing, intermediate, and finishing rolling zones are processed simultaneously to achieve online processing of bars and wire rods, ensuring timely processing and effective dust control.

[0060] The bar and wire production method provided by the present invention uses the online dust removal method for bar and wire production as described above to treat the dust generated during the production process.

[0061] As can be seen from the above specific embodiments, the online dust removal method and bar / wire production method provided by the present invention, based on the dust generation principles of the three different production areas of the bar / wire production line—roughing, intermediate, and finishing—deploy different dust removal systems accordingly, enabling targeted treatment of dust in different areas and achieving good dust removal results. In the roughing area, the coarse iron oxide scale is generally difficult to disperse, and the small amount of fine dust is mainly affected by hot airflow. Therefore, deploying an airflow dust collection system in the roughing area can effectively remove dust from this area. In the intermediate rolling area, a large amount of iron oxide scale is generated, and the high rolling speed causes dust to quickly disperse into the surrounding environment. Therefore, deploying a water mist dust suppression and airflow dust collection combined treatment system in this area can effectively suppress dust while preventing water vapor from affecting equipment in the workshop. In the finishing rolling area, the fine rolling pieces generate less dust, but the high rolling speed requires a large airflow to combat dust dispersion. Therefore, a water mist dust suppression system can effectively remove dust from this area. This invention can reduce investment and operating costs while ensuring the effectiveness of dust treatment. By eliminating dust collection in the high-speed (fine rolling) area and reducing dust collection in the medium-speed (medium rolling) area, the dust removal system can reduce the conventional calculated air volume by more than 50%. Combined with other investments such as pipelines, the dust removal investment can be reduced by 60%.

[0062] The online dust removal method and rod / wire production method according to the present invention have been described above by way of example with reference to the accompanying drawings. However, those skilled in the art should understand that various modifications can be made to the online dust removal method and rod / wire production method proposed above without departing from the scope of the present invention. Therefore, the scope of protection of the present invention should be determined by the content of the appended claims.

Claims

1. A method for online dust removal of bar and wire rods, characterized in that, Includes the following steps: Determine the roughing, intermediate, and finishing rolling zones of the bar and wire rod production line; An air volume dust collection and treatment system is installed in the roughing rolling area; a water mist dust suppression and air volume dust collection combined treatment system is installed in the intermediate rolling area; and a water mist dust suppression system is installed in the finishing rolling area. In the bar and wire rod production process, the air volume dust collection system is used to collect dust in the roughing rolling area, the water mist dust suppression and air volume dust collection combined treatment system is used to suppress and collect dust in the intermediate rolling area, and the water mist dust suppression system is used to suppress dust in the finishing rolling area, thereby completing the dust removal for the bar and wire rod production line; wherein, The air volume dust collection system includes a first dust collection hood and a first fan disposed at the rear of the first dust collection hood; a first dust suction opening is provided on the side of the first dust collection hood near the bar and wire production line.

2. The online dust removal method for rods and wires according to claim 1, characterized in that, The first dust collection hood is a triangular dust collection hood.

3. The online dust removal method for rods and wires according to claim 1, characterized in that, During the process of deploying the air volume dust collection and treatment system in the roughing rolling area The first dust collection hood is placed over the bar and wire production line in the roughing area, with the first dust suction opening facing the bar and wire production line.

4. The online dust removal method for rods and wires according to claim 1, characterized in that, The water mist dust suppression and air volume dust collection combined treatment system includes a first spraying device and a dust collection device; The first spraying device is installed above the bar and wire production line in the intermediate rolling zone; The dust collection device is located above the spraying device.

5. The online dust removal method for rods and wires according to claim 4, characterized in that, The dust collection device includes a rectangular second dust collection hood and a second fan disposed at the rear of the second dust collection hood; a second dust suction opening is provided on the side wall of the second dust collection hood.

6. The online dust removal method for rods and wires according to claim 4, characterized in that, During the process of deploying a water mist dust suppression and air volume dust collection combined treatment system in the intermediate rolling area... The spray heads of the first spraying device are respectively arranged on both sides diagonally above the bar and wire production line in the intermediate rolling area; The dust collection device is positioned above the first spray device, and the suction range of the second suction opening of the dust collection device covers the area of ​​water mist generated by the first spray device.

7. The online dust removal method for rods and wires according to claim 1, characterized in that, The water mist dust suppression system includes a second spray device; The second spraying device includes a second spray head disposed above the finishing rolling area.

8. The online dust removal method for rods and wires according to claim 1, characterized in that, In the bar and wire rod production process, the dust collection treatment system for the roughing rolling area is used to collect dust, the combined water mist dust suppression and air volume dust collection treatment system for the intermediate rolling area is used to suppress and collect dust, and the water mist dust suppression treatment system for the finishing rolling area is used to suppress dust simultaneously.

9. A method for producing bar and wire rods, characterized in that, In the production process of bars and wire rods, the online dust removal method for bars and wire rods as described in any one of claims 1-8 is used to treat the dust generated during the production of bars and wire rods.

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