On-line dust removal method for rods and wires and production method for rods and wires

Abstract

The invention provides a rod and wire online dust removal method and a rod and wire production method, and belongs to the technical field of steel rolling, and the rod and wire online dust removal method comprises the following steps: arranging an air quantity dust collection treatment system in a rough rolling area, arranging a water mist dust suppression air quantity dust collection combined treatment system in an intermediate rolling area, and arranging a water mist dust suppression treatment system in a finish rolling area; in the rod and wire production process, the rough rolling area is subjected to dust collection treatment through the air volume dust collection treatment system, the medium rolling area is subjected to dust suppression and dust collection treatment through the water mist dust suppression air volume dust collection combined treatment system, and the finish rolling area is subjected to dust suppression treatment through the water mist dust suppression treatment system, so that dust treatment of the rod and wire production line is completed. By utilizing the dust removal device, the problems of high cost and low efficiency when a large-air-volume dust remover is adopted in a dust removal scheme for a rod and wire production line in the prior art can be solved; when spraying dust fall is adopted, the dust removal effect is poor, and a large amount of water vapor is generated to easily corrode peripheral equipment or instruments.

Description

Technical Field

[0001] The present invention relates to the technical field of steel rolling, and more specifically, to an online dust removal method for rods and wires and a rod and wire production method. Background Art

[0002] The rod and wire production line has the characteristics of many dust-generating points, a wide area, and high smoke and dust humidity. In addition, due to the movement of the rolling mill, the operator's line of sight cannot be blocked, which ultimately leads to problems such as difficulty in dust capture and filtration.

[0003] Dust removal technology in the steel rolling field has been developed for many years, but it is mainly concentrated in the plate and strip workshops with high dust. As environmental protection requirements become increasingly stringent, dust removal equipment has begun to be put into production lines for rod and wire rods. The process method is to collect in dust hoods → filter in dust collectors → discharge in chimneys. In addition, there are cases of using water mist spray to reduce dust, that is, spraying water in various areas of the rolling process to reduce dust.

[0004] However, the plate and strip mill has fewer concentrated passes, and the dust properties are different from those in the rod and wire workshop. The rod and wire workshop directly uses a large air volume dust collector with high cost and low efficiency. Spraying dust reduction can avoid the problem of high investment, but water vapor is greatly affected by temperature. After heating, a large amount of water vapor is generated, which not only has a poor dust removal effect, but also easily corrodes surrounding equipment or instruments.

[0005] In summary, the current dust removal solutions for rod and wire production lines have the following problems: when using large-volume dust collectors, the cost is high and the efficiency is low; when using spray dust reduction, the dust removal effect is poor and a large amount of water vapor is generated, which is easy to corrode surrounding equipment or instruments. Summary of the invention

[0006] In view of the above problems, the purpose of the present invention is to provide an online dust removal method for rods and wires and a rod and wire production method, so as to solve the problems in the prior art that when a large air volume dust collector is used, the cost is high and the efficiency is low; when spraying dust reduction is used, the dust removal effect is poor, and a large amount of water vapor is generated, which is easy to corrode peripheral equipment or instruments.

[0007] The present invention provides an online dust removal method for rods and wires, comprising the following steps:

[0008] Determine the rough rolling area, intermediate rolling area and finishing rolling area of ​​the bar and wire production line;

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

[0010] During the rod and wire production process, the rough rolling area is subjected to dust collection treatment by the air volume dust collection treatment system, the intermediate rolling area is subjected to dust suppression and dust collection treatment by the water mist dust suppression air volume dust collection combined treatment system, and the finishing rolling area is subjected to dust suppression treatment by the water mist dust suppression treatment system, so as to complete the dust removal of the rod and wire production line.

[0011] In addition, a preferred solution is that the air volume dust collection and processing system includes a first dust collecting hood and a first fan arranged at the rear of the first dust collecting hood; a first dust suction opening is arranged on one side of the first dust collecting hood close to the rod and wire production line.

[0012] In addition, a preferred solution is that the first dust collecting hood is a triangular dust collecting hood.

[0013] In addition, a preferred solution is that during the process of arranging the air volume dust collection and treatment system in the rough rolling area,

[0014] The first dust collecting hood is covered above the rod and wire production line in the rough rolling area, so that the first dust suction opening faces the rod and wire production line.

[0015] In addition, a preferred solution is that the water mist dust suppression air volume dust collection combined treatment system includes a first spray device and a dust collecting device; the first spray device is arranged above the rod and wire production line in the intermediate rolling area; the dust collecting device is arranged above the spray device.

[0016] In addition, a preferred solution is that the dust collecting device includes a rectangular second dust collecting hood and a second fan arranged at the rear of the second dust collecting hood; and a second dust suction opening is arranged on the side wall of the second dust collecting hood.

[0017] In addition, a preferred solution is that during the process of arranging the water mist dust suppression air volume dust collection combined treatment system in the intermediate rolling area,

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

[0019] The dust collecting device is arranged above the first spraying device, and the dust suction range of the second dust suction opening of the dust collecting device covers the water mist range generated by the first spraying device.

[0020] In addition, a preferred solution is that the water mist dust suppression treatment system includes a second spray device; the second spray device includes a second spray head arranged above the finishing area.

[0021] In addition, a preferred solution is that, during the rod and wire production process, dust collection treatment is performed on the rough rolling area by the air volume dust collection treatment system, dust suppression and dust collection treatment is performed on the intermediate rolling area by the water mist dust suppression air volume dust collection combined treatment system, and dust suppression treatment is performed on the finishing rolling area by the water mist dust suppression treatment system.

[0022] The present invention also provides a rod and wire production method. During the rod and wire production process, the above-mentioned rod and wire online dust removal method is used to treat the dust generated in the rod and wire production.

[0023] It can be seen from the above technical scheme that the online dust removal method for rods and wires and the rod and wire production method provided by the present invention are respectively arranged according to the dust generation principle in the three different production areas of the rough rolling area, the intermediate rolling area and the finishing rolling area of ​​the rod and wire production line, so that the dust in different areas can be treated in a targeted manner and the dust removal effect is good; the iron oxide scale in the rough rolling area is coarse and usually difficult to dissipate, and a small amount of broken small dust is mainly affected by the hot air flow. Therefore, by arranging an air volume dust collection and treatment system in the rough rolling area, the dust in this area can be effectively removed; the amount of iron oxide scale produced in the intermediate rolling area is large, and the rolling speed is high, so that the dust quickly dissipates to the surrounding environment. Therefore, by arranging a water mist dust suppression air volume dust collection and treatment system in this area, dust can be effectively suppressed, and at the same time, the water vapor can be avoided from escaping in the workshop and affecting the equipment; the finished rolling area has small rolled pieces and produces less powder, but the running speed of the rolled pieces is high, and a large air volume is required to resist dust dissipation. Therefore, the dust in this area can be effectively removed by a water mist dust suppression treatment system. The present invention can reduce investment and operating costs while ensuring the smoke treatment effect. Since the dust collection in the high-speed (finishing rolling) area is eliminated and the dust collection in the medium-speed (medium rolling) area is reduced, 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] In order to achieve the above and related purposes, one or more aspects of the present invention include the features that will be described in detail later. The following description and the accompanying drawings describe some exemplary aspects of the present invention in detail. However, these aspects indicate only some of the various ways in which the principles of the present invention can be used. In addition, the present invention is intended to include all these aspects and their equivalents. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] By referring to the following description in conjunction with the accompanying drawings, and with a more complete understanding of the present invention, other objects and results of the present invention will become more apparent and easily understood.

[0026] Figure 1 is a flow chart of an online dust removal method for rods and wires according to an embodiment of the present invention;

[0027] Figure 2The figure is a principle block diagram of an online dust removal method for rods and wires according to an embodiment of the present invention. DETAILED DESCRIPTION

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

[0029] In view of the above-mentioned prior art, for the dust removal scheme of the rod and wire production line, there are problems such as high cost and low efficiency when using a large air volume dust collector; poor dust removal effect when using spray dust reduction, and a large amount of water vapor generated, which is easy to corrode peripheral equipment or instruments. An online dust removal method for rods and wires and a rod and wire production method are proposed.

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

[0031] In order to illustrate the rod and wire online dust removal method and rod and wire production method provided by the present invention, Figure 1 The process of the online dust removal method for rods and wires according to an embodiment of the present invention is shown; Figure 2 The principle of the online dust removal method for rods and wires according to an embodiment of the present invention is shown.

[0032] In the field of steel rolling technology, the current dust removal scheme for rod and wire production lines is generally unified on the production line, directly using a large air volume dust collector, or using a spray device. The large air volume dust collector is costly and inefficient. Although spray dust reduction can solve the problem of high investment, water vapor is greatly affected by temperature and generates a large amount of water vapor after heating. Not only is the dust removal effect poor, but the large amount of water vapor generated is prone to corrode surrounding equipment or instruments. Based on this, the present invention proposes an online dust removal method for rods and wires.

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

[0034] Step S1, determining a rough rolling area, an intermediate rolling area and a finishing rolling area of ​​a bar and wire production line;

[0035] Step S2, deploying an air volume dust collection treatment system in the rough rolling area, deploying a water mist dust suppression air volume dust collection combined treatment system in the intermediate rolling area, and deploying a water mist dust suppression treatment system in the finishing rolling area;

[0036] Step S3, during the rod and wire production process, the rough rolling area is dust-collected by the air volume dust collection treatment system, the intermediate rolling area is dust-suppressed and dust-collected by the water mist dust suppression air volume dust collection combined treatment system, and the finishing rolling area is dust-suppressed by the water mist dust suppression treatment system, so as to complete the dust removal of the rod and wire production line.

[0037] It should be noted that the rough rolling area, intermediate rolling area and finishing rolling area of ​​the bar and wire production line in the present invention are divided according to the bar and wire production process and equipment layout. The division of the rough rolling area, intermediate rolling area and finishing rolling area is the existing technology in this field, and the present invention will not go into details.

[0038] According to the dust generation principle of the three different production areas of the bar and wire production line, namely the rough rolling area, the intermediate rolling area and the finishing rolling area, different dust removal systems are arranged respectively, so that the dust in different areas can be treated in a targeted manner and the dust removal effect is good; the iron oxide scale in the rough rolling area is coarse and usually difficult to dissipate, and a small amount of broken dust is mainly affected by the hot air flow. Therefore, by arranging an air volume dust collection and treatment system in the rough rolling area, the dust in this area can be effectively removed; the amount of iron oxide scale produced in the intermediate rolling area is large, and the high speed of the rolled pieces makes the dust quickly dissipate to the surrounding environment. Therefore, by arranging a water mist dust suppression air volume dust collection and treatment system in this area, dust can be effectively suppressed, and at the same time, the impact of water vapor dissipating in the workshop on the equipment can be avoided; in the finishing rolling area, the rolled pieces are small and the powder output is small, but the running speed of the rolled pieces is high, so a large air volume is required to combat dust dissipation. Therefore, the dust in this area can be effectively removed by a water mist dust suppression treatment system. The present invention can reduce investment and operating costs while ensuring the smoke treatment effect. Since the dust collection in the high-speed (finishing rolling) area is eliminated and the dust collection in the medium-speed (medium rolling) area is reduced, 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 and processing system includes a first dust collecting hood and a first fan arranged at the rear of the first dust collecting hood; a first dust suction opening is arranged on one side of the first dust collecting hood close to the rod and wire production line.

[0040] Specifically, the air volume dust collection and processing system utilizes the negative pressure generated by the first fan in the first dust collecting hood to collect dust, thereby achieving the dust removal effect.

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

[0042] It should be noted that the first dust hood is preferably but not limited to a triangular dust hood. The iron oxide scale in the rough rolling area is coarse, and the scattered dust is mainly affected by the primary dusting effect. The escape speed is not large. The use of a triangular dust hood that occupies a smaller space can collect the dust in the rough rolling area.

[0043] As a preferred solution of the present invention, during the process of arranging the air volume dust collection system in the rough rolling area, the first dust collection hood is covered above the rod and wire production line in the rough rolling area, with the first dust suction opening facing the rod and wire production line.

[0044] Specifically, in the length direction, the first dust collecting hood is covered above the rough rolling area, so that it has a better dust collection effect on the rough rolling area.

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

[0046] The first spray device is arranged above the rod and wire production line in the intermediate rolling area;

[0047] The dust collecting device is arranged above the spraying device.

[0048] Specifically, a large amount of iron oxide scale is produced in the intermediate rolling area, and the high rolling speed causes dust to quickly escape into the surrounding environment. Therefore, a first dust suppression spray device is arranged in this area to implement dust reduction to suppress the dust. A dust removal device is arranged in a certain area above the first spray device (set according to actual needs) to collect and process water vapor to prevent water vapor from escaping in the workshop.

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

[0050] Specifically, the second dust hood is preferably, but not limited to, rectangular, and the second fan is used to generate negative pressure inside the second dust hood to collect and process water vapor.

[0051] As a preferred solution of the present invention, in the process of laying out the water mist dust suppression air volume dust collection combined treatment system in the intermediate rolling area,

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

[0053] The dust collecting device is arranged above the first spraying device, and the dust suction range of the second dust suction opening of the dust collecting device covers the water mist range generated by the first spraying device.

[0054] Specifically, by arranging the spray heads of the first spray device on both sides obliquely above the rod and wire production line in the intermediate rolling area, the dust generated by the rod and wire production line can be fully sprayed for dust suppression. By making the dust suction range of the second dust suction opening of the dust collecting device cover the water mist range 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 solution of the present invention, the first dust collecting hood and the second dust collecting hood share the same dust outlet pipe or dust collector, so as to uniformly process the dust collected from the rough rolling area and the intermediate rolling area.

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

[0057] Specifically, the workpieces in the finishing rolling area are small and produce little dust, but the running speed of the workpieces is high, so a large air volume is required to combat dust escape. The efficiency of using dust collectors is low, so a second spray device is arranged in this area to suppress dust.

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

[0059] Specifically, the rough rolling area, the intermediate rolling area and the finishing rolling area are processed synchronously to realize the online processing of the bars and wires, and the processing is timely and the dust treatment effect is good.

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

[0061] It can be seen from the above specific embodiments that the online dust removal method for rods and wires and the rod and wire production method provided by the present invention are respectively arranged according to the dust generation principle in the three different production areas of the rough rolling area, the intermediate rolling area and the finishing rolling area of ​​the rod and wire production line, so that the dust in different areas can be treated in a targeted manner and the dust removal effect is good; the iron oxide scale in the rough rolling area is coarse and usually difficult to dissipate, and a small amount of broken small dust is mainly affected by the hot air flow, so the dust in this area can be effectively removed by arranging an air volume dust collection and treatment system in the rough rolling area; the amount of iron oxide scale produced in the intermediate rolling area is large, and the high speed of the rolled piece makes the dust quickly dissipate to the surrounding environment, so the dust can be effectively suppressed by arranging a water mist dust suppression air volume dust collection and treatment system in this area, and at the same time, the water vapor can be avoided from escaping in the workshop and affecting the equipment; the finished rolling area has small rolled pieces and produces a small amount of powder, but the running speed of the rolled pieces is high, so a large air volume is required to resist dust dissipation, so the dust in this area can be effectively removed by a water mist dust suppression treatment system. The present invention can reduce investment and operating costs while ensuring the smoke treatment effect. Since the dust collection in the high-speed (finishing rolling) area is eliminated and the dust collection in the medium-speed (medium rolling) area is reduced, 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] As described above, the online dust removal method for rods and wires and the rod and wire production method proposed in the present invention are described by way of example with reference to the accompanying drawings. However, those skilled in the art should understand that various improvements can be made to the online dust removal method for rods and wires and the rod and wire production method proposed in the present invention without departing from the content of the present invention. Therefore, the protection scope of the present invention should be determined by the content of the attached claims.

Claims

1. A method for online dust removal of rods and wires, characterized in that: The steps include: Determine the rough rolling area, intermediate rolling area and finishing rolling area of ​​the bar and wire production line; An air volume dust collection treatment system is arranged in the rough rolling area, a water mist dust suppression air volume dust collection combined treatment system is arranged in the intermediate rolling area, and a water mist dust suppression treatment system is arranged in the finishing rolling area; During the rod and wire production process, the rough rolling area is subjected to dust collection treatment by the air volume dust collection treatment system, the intermediate rolling area is subjected to dust suppression and dust collection treatment by the water mist dust suppression air volume dust collection combined treatment system, and the finishing rolling area is subjected to dust suppression treatment by the water mist dust suppression treatment system, so as to complete the dust removal of the rod and wire production line.

2. The method for online dust removal of rods and wires according to claim 1, characterized in that: The air volume dust collection and processing system comprises a first dust collecting hood and a first fan arranged at the rear of the first dust collecting hood; a first dust suction opening is arranged on one side of the first dust collecting hood close to the rod and wire production line.

3. The method for online dust removal of rods and wires according to claim 2, characterized in that: The first dust collecting cover is a triangular dust collecting cover.

4. The method for online dust removal of rods and wires according to claim 2, characterized in that: In the process of arranging the air volume and dust collection system in the rough rolling area, The first dust collecting hood is covered above the rod and wire production line in the rough rolling area, so that the first dust suction opening faces the rod and wire production line.

5. The method for online dust removal of rods and wires according to claim 1, characterized in that: The water mist dust suppression air volume and dust collection combined treatment system comprises a first spray device and a dust collection device; The first spray device is arranged above the rod and wire production line in the intermediate rolling area; The dust collecting device is arranged above the spraying device.

6. The method for online dust removal of rods and wires according to claim 5, characterized in that: The dust collecting device comprises a rectangular second dust collecting cover and a second fan arranged at the rear of the second dust collecting cover; a second dust suction opening is arranged on the side wall of the second dust collecting cover.

7. The method for online dust removal of rods and wires according to claim 5, characterized in that: In the process of laying out the water mist dust suppression air volume dust collection combined treatment system in the intermediate rolling area, The spray heads of the first spray device are respectively arranged on both sides obliquely above the rod and wire production line in the intermediate rolling area; The dust collecting device is arranged above the first spraying device, and the dust suction range of the second dust suction opening of the dust collecting device covers the water mist range generated by the first spraying device.

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

9. The method for online dust removal of rods and wires according to claim 1, characterized in that: During the rod and wire production process, the rough rolling area is subjected to dust collection treatment by the air volume dust collection treatment system, the intermediate rolling area is subjected to dust suppression and dust collection treatment by the water mist dust suppression air volume dust collection combined treatment system, and the finishing rolling area is subjected to dust suppression treatment by the water mist dust suppression treatment system.

10. A method for producing rods and wires, characterized in that: In the process of producing rods and wires, the online dust removal method for rods and wires as described in any one of claims 1 to 9 is used to treat the dust generated in the production of rods and wires.

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