Blast furnace water slag iron powder extraction device

Abstract

The utility model provides a blast furnace water slag iron powder extracting device, which belongs to the technical field of blast furnace metallurgy and comprises the following steps: arranging an iron picking device on one side of a belt head wheel of a blast furnace water slag conveying belt to collect a slag-iron mixture in the transportation process; a secondary screening device is arranged in a water granulated slag storage yard, and a slag-iron mixture in the storage process is collected; the obtained slag-iron mixture is ground and dried through waste heat of a furnace platform tapping channel cover plate, and a dried mixture is obtained; and after the dried mixture is placed in a blast furnace molten iron groove to be melted, the mixture is separated through a blast furnace slag-iron separator, and the mixture enters a molten iron tank to obtain separated iron powder. According to the device and the technology for extracting the iron powder from the blast furnace water granulated slag, the permanent magnet roller is arranged on the blast furnace water granulated slag conveying belt of a slag flushing system, and the iron powder in the blast furnace water granulated slag is separated out through two-pass magnetic separation, so that the iron powder in the blast furnace water granulated slag is recycled, a large number of waste pig iron resources are obtained, and the smelting energy consumption is saved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of blast furnace metallurgy, in particular, especially relates to a blast furnace water slag iron powder extraction device. BACKGROUND

[0002] Due to the particularity of blast furnace smelting production, the slag iron cannot be completely separated in front of the furnace during the blast furnace production process, and the blast furnace water slag contains 3 ‰ iron powder, which is directly transported for cement production, wherein the blast furnace water slag accounts for 38 % of the blast furnace pig iron output, and a large amount of iron powder in the blast furnace water slag is not recycled, which wastes a large amount of pig iron resources and smelting energy consumption. UTILITY MODEL CONTENT

[0003] According to the technical problems mentioned in the above background technology, a blast furnace water slag iron powder extraction device is provided. The technical means adopted by the utility model is as follows:

[0004] A blast furnace water slag iron powder extraction device, comprising:

[0005] A slag iron collecting device arranged on one side of the head wheel of the blast furnace water slag conveying belt,

[0006] A secondary screening device arranged in the water slag storage yard,

[0007] A grinding and drying device for grinding and drying the slag iron mixture obtained by the slag iron collecting device and the secondary screening device by using the residual heat of the sub-cover plate of the furnace platform tapping channel,

[0008] And a slag iron separating device for melting the mixture after drying.

[0009] Further, the slag iron collecting device collects the slag iron mixture during transportation.

[0010] Further, the secondary screening device collects the slag iron mixture during storage.

[0011] Further, the slag iron collecting device comprises a roller I, and a scraping device is further arranged on the side surface of the roller I.

[0012] Further, the roller I is a permanent magnet roller for adsorbing the slag iron mixture.

[0013] Further, the scraping device is arranged at the tail end of the blast furnace water slag conveying belt.

[0014] Further, the scraping device comprises a scraper and a hopper device, the scraper and the roller form a certain angle for scraping the slag iron mixture adsorbed on the roller, the hopper is arranged at the lower end of the scraper, and the hopper guides the scraped slag iron mixture into the storage container.

[0015] Further, the secondary screening device comprises a belt conveyor and a roller II arranged at the end of the belt conveyor.

[0016] Further, the roller II is a permanent magnet roller, and the roller II adsorbs the slag-iron mixture in the water slag storage yard.

[0017] Further, the dried mixture is melted by molten iron in a main iron channel of a blast furnace, and the slag-iron is separated.

[0018] Compared with the prior art, the device has the following advantages:

[0019] 1. The blast furnace water slag iron powder extraction device and technology provided by the device can realize the recycling of iron powder in the blast furnace water slag, obtain a large amount of waste pig iron resources, and save smelting energy consumption.

[0020] 2. The permanent magnet roller is strong in magnetism and does not need electrical equipment, so as to solve the problems of high water content in the blast furnace water slag, high corrosion of the electrical equipment in the humid environment, and high failure rate.

[0021] 3. The device is simple in equipment, convenient in installation, low in investment, and long in service life of the permanent magnet roller.

[0022] In summary, the technical scheme of the device is simple to use, and for the pig iron production of 8.15 million tons in China in 2024, the permanent magnet technology is used to extract as much iron powder as possible from the waste blast furnace water slag that cannot be recycled, to recycle and utilize the iron powder by melting with the molten iron in the main channel of the blast furnace, to obtain a large amount of recycled pig iron resources, to save a large amount of smelting energy consumption, and to reduce pollution.

[0023] Therefore, the technical scheme of the device solves the problem of waste iron powder resources in the blast furnace water slag that cannot be recycled in the prior art.

[0024] According to the pig iron production of 8.15 million tons in China in 2024, the slag amount accounts for 38%, the iron content in the blast furnace water slag is 3%, and the extraction of iron powder is calculated at 1000 yuan / ton: 8.15*0.38*0.03*1000=92.9 billion yuan. The actual recycling is calculated at 10%, and the annual output value is 9.29 billion yuan. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced as follows. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor under the premise of not paying creative labor.

[0026] Figure 1 The present application device schematic diagram. DETAILED DESCRIPTION

[0027] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The present application will be described in detail below with reference to the drawings and in combination with the embodiments.

[0028] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme in the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all. The description of the at least one exemplary embodiment is actually only illustrative, but not as any limitation on the present application and its application or use. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0029] It should be noted that the terms used herein are only for describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is intended to include the plural form, and in addition, it should be understood that when the terms "comprise" and / or "include" are used in the specification, there is a feature, step, operation, device, component and / or combination thereof.

[0030] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0031] In the description of this invention, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is generally based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this invention and simplifying the description. Unless otherwise stated, these directional terms 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 on the scope of protection of this invention. The directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0032] For ease of description, spatial relative terms such as "above," "over," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation besides the orientation of the device as described in the figures. For example, if the device in the figures is inverted, a device described as "above" or "above" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0033] Further, it needs to be explained that the use of the words "first", "second" and the like to define parts only facilitates the distinction of the corresponding parts, and the above words have no special meaning unless otherwise stated, and therefore cannot be understood as limiting the scope of protection of the present application. The utility model provides a blast furnace water slag iron powder extraction device, provides technical support for the secondary recycling of a large amount of scrap pig iron resources in the original blast furnace water slag.

[0034] As Figure 1 The utility model provides a blast furnace water slag iron powder extraction device, comprising:

[0035] The iron picking device is arranged at one side of the head wheel of the blast furnace water slag conveying belt, the secondary screening device is arranged at the water slag storage yard, the grinding and drying device is used for grinding and drying the slag-iron mixture obtained by the iron picking device and the secondary screening device, and the slag-iron separation device is used for melting the mixture after drying.

[0036] As a preferred embodiment, in the present application, the iron picking device collects the slag-iron mixture in the transportation process. The iron picking device comprises a roller I, and a scraping device is further arranged on the side of the roller I.

[0037] As a preferred embodiment, in the present application, the roller I is a permanent magnet roller, which is used for adsorbing the slag-iron mixture.

[0038] Further, preferably, the scraping device is arranged at the tail end of the blast furnace water slag conveying belt, and the scraping device comprises a scraper and a hopper device. The scraper and the roller form a certain angle, which is used for scraping the slag-iron mixture adsorbed on the roller. The hopper is arranged at the lower end of the scraper, and the hopper guides the scraped slag-iron mixture into a storage container.

[0039] The secondary screening device is arranged at the water slag storage yard, and is used for collecting the slag-iron mixture in the storage process. The secondary screening device comprises a belt conveyor and a roller II arranged at the tail end of the belt. The roller II is a permanent magnet roller, and the roller II adsorbs the slag-iron mixture in the water slag storage yard.

[0040] The obtained slag-iron mixture is ground and dried by using the residual heat of the cover plate of the furnace platform tapping channel, to obtain the mixture after drying. The specific grinding and drying method can be any method commonly used in the art, and therefore will not be described in detail in the present application.

[0041] After the mixture after drying is placed into the blast furnace tapping channel and melted by using molten iron, the slag-iron separator is used for slag-iron separation, and the separated iron powder is obtained in the molten iron tank.

[0042] The above utility model embodiment serial numbers are only for description, and do not represent the advantages and disadvantages of the embodiments.

[0043] In the above embodiments of the utility model, the description of each embodiment has its own emphasis, and the parts not described in detail in a certain embodiment can be referred to the related description of other embodiments.

[0044] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the utility model, but not to limit them; although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model.

Claims

1. A blast furnace water granulated slag iron powder extraction device, characterized by, The application relates to a slag-iron separation device, which comprises the following parts: a slag-iron separation device arranged on one side of a head wheel of a blast furnace water slag conveying belt, a secondary screening device arranged in a water slag storage yard, a grinding and drying device for grinding and drying a slag-iron mixture obtained by the slag-iron separation device and the secondary screening device by using the residual heat of a sub-cover plate of a blast furnace iron tapping channel, and a slag-iron separation device for melting the mixture after drying. The slag-iron separation device collects the slag-iron mixture in the conveying process. The secondary screening device collects the slag-iron mixture in the storage process. The slag-iron separation device comprises a roller I, and a scraping device arranged on the side of the roller I. The roller I is a permanent magnet roller for adsorbing the slag-iron mixture.

2. The device for extracting iron powder from blast furnace slag water according to claim 1, characterized in that, The scraping device is arranged at the tail end of the blast furnace water slag conveying belt.

3. The device for extracting iron powder from blast furnace slag water according to claim 1, characterized in that, The scraping device comprises a scraper and a hopper device, the scraper and the roller form a certain angle for scraping the slag-iron mixture adsorbed on the roller, the hopper is arranged at the lower end of the scraper, and the hopper guides the scraped slag-iron mixture into a storage container.

4. The device for extracting iron powder from blast furnace slag water according to claim 1, characterized in that, The secondary screening device comprises a belt conveyor and a roller II arranged at the tail end of the belt.

5. The device for extracting iron powder from blast furnace slag water according to claim 4, characterized in that, The roller II is a permanent magnet roller for adsorbing the slag-iron mixture in the water slag storage yard.

6. The device for extracting iron powder from blast furnace slag water according to claim 4, characterized in that, The mixture after drying is melted by the molten iron of a blast furnace main iron channel for slag-iron separation.

7. The device for extracting iron powder from blast furnace slag according to claim 4 or 6, characterized in that, ​ 8. The device for extracting iron powder from blast furnace slag water according to claim 1, characterized in that, ​ 9. The device for extracting iron powder from blast furnace slag water according to claim 8, characterized in that, ​ 10. The device for extracting iron powder from blast furnace slag water according to claim 1, characterized in that, ​

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