Smelting furnace for comprehensive utilization and recovery of waste steel slag

Abstract

The utility model discloses a waste steel slag comprehensive utilization recovery smelting furnace, which comprises a bottom plate, a smelting device, a connecting device, a cooling device and a discharging device, and is characterized in that the smelting device comprises a smelting furnace and a smelting assembly, and the smelting furnace is arranged on the bottom plate; the smelting assembly is arranged in the smelting furnace; the connecting device comprises a communicating assembly, the communicating assembly is arranged on the bottom plate, and one end of the communicating assembly is connected with the bottom of the smelting furnace; the cooling device comprises a cooling furnace, the cooling furnace is arranged on the other side of the bottom plate, and the bottom of the cooling furnace is connected with the other end of the communicating assembly. Therefore, through the smelting and cooling processes, the waste steel slag can be efficiently converted into the molten steel, high-value recovery and resource utilization of the waste steel slag are achieved, occupation of land resources is remarkably reduced, environmental pollution is effectively reduced, and positive transformation of the iron and steel industry to green, cyclic and low-carbon development is shown.

Description

Technical Field

[0001] The utility model relates to the technical field of industrial smelting furnaces, in particular to a smelting furnace for comprehensive utilization and recovery of waste steel slag. Background Art

[0002] In the grand picture of steel production, the existence of waste steel slag is like a difficult problem. As an inevitable product of the production process, the treatment of these waste steel slags is directly related to the sustainable development of the industry and the health of the ecological environment.

[0003] Traditional methods of dealing with waste steel slag, such as landfill or random stacking, have undoubtedly put heavy pressure on land resources. With land resources becoming increasingly scarce, this simple and crude method of treatment is obviously not a long-term solution. What is more serious is that the harmful substances in waste steel slag may penetrate into the soil and water sources with rainwater, causing irreversible damage to the environment and ecology.

[0004] Therefore, the effective recycling and utilization of waste steel slag has become the focus of the steel industry and even the whole society. This is not only related to the economic benefits of enterprises, but also to the environmental responsibility and sustainable development of the whole society. To achieve the effective recycling and utilization of waste steel slag, efforts and explorations in many aspects are needed.

[0005] Waste steel slag needs to be processed to maximize the recovery of resources and completely remove harmful substances in the waste steel slag, and convert it into building materials, environmentally friendly bricks, etc., realizing the "waste to treasure" of waste steel slag. Utility Model Content

[0006] The utility model aims to solve one of the technical problems in the related art at least to a certain extent.

[0007] To this end, the purpose of the utility model is to propose a comprehensive utilization and recovery smelting furnace for waste steel slag. Through smelting and cooling processes, waste steel slag can be efficiently converted into molten steel, realizing high-value recovery and resource utilization of waste steel slag, which not only significantly reduces the occupation of land resources, but also effectively reduces environmental pollution, demonstrating the positive transformation of the steel industry towards green, circular and low-carbon development.

[0008] To achieve the above-mentioned purpose, the utility model proposes a waste steel slag comprehensive utilization and recovery smelting furnace including a bottom plate, a smelting device, a connecting device, a cooling device and a discharging device, wherein the smelting device includes a smelting furnace and a smelting component, wherein the smelting furnace is arranged on the bottom plate; the smelting component is arranged in the smelting furnace; the connecting device includes a connecting component, wherein the connecting component is arranged on the bottom plate, and one end of the connecting component is connected to the bottom of the smelting furnace; the cooling device includes a cooling furnace, wherein the cooling furnace is arranged on the other side of the bottom plate, and the bottom of the cooling furnace is connected to the other end of the connecting component; the discharging device includes a discharging component, wherein the discharging component is arranged on the bottom plate, and one end of the discharging component is connected to the lower end of the cooling furnace.

[0009] The utility model discloses a waste steel slag comprehensive utilization and recovery smelting furnace, which can efficiently convert waste steel slag into molten steel through smelting and cooling processes, thereby realizing high-value recovery and resource utilization of waste steel slag, not only significantly reducing the occupation of land resources, but also effectively reducing environmental pollution, demonstrating the positive transformation of the steel industry towards green, circular and low-carbon development.

[0010] In addition, the waste steel slag comprehensive utilization recovery smelting furnace proposed in the application may also have the following additional technical features:

[0011] Specifically, the smelting assembly includes an outer tube, three branch tubes, multiple smelting ports and a downstream plate, wherein the outer tube is arranged on one side of the smelting furnace, and the outer tube is connected to an external blast furnace; one end of the three branch tubes is respectively connected to the outer tube, and the other end is respectively arranged in the smelting furnace; the multiple smelting ports are respectively arranged in the smelting furnace, and the multiple smelting ports are respectively connected to the three branch tubes; the downstream plate is arranged in the smelting furnace, and the downstream plate is wide at the top and narrow at the bottom.

[0012] Specifically, the connecting component includes a connecting pipe and a plurality of valves, wherein one end of the connecting pipe is connected to the bottom of the smelting furnace; and the plurality of valves are respectively arranged on the connecting pipe.

[0013] Specifically, a cooling box is arranged at the bottom of the cooling furnace, the cooling box is connected to the inside of the cooling furnace, and the bottom of the cooling furnace is connected to the other end of the connecting pipe.

[0014] Specifically, the discharge assembly includes an electric pump, a discharge pipe, a first valve and a second valve, wherein the electric pump is arranged on the base plate; the discharge pipe is respectively connected to both ends of the electric pump, and one end of the discharge pipe is connected to one end of the cooling furnace; the first valve and the second valve are respectively arranged at the front and rear ends of the discharge pipe.

[0015] Additional aspects and advantages of the present invention will be given in part in the following description and in part will become apparent from the following description or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0017] Figure 1 A three-dimensional diagram of a waste steel slag comprehensive utilization recovery smelting furnace according to an embodiment of the utility model;

[0018] Figure 2 This is a schematic structural diagram of a waste steel slag comprehensive utilization recovery smelting furnace according to an embodiment of the utility model;

[0019] Figure 3 for Figure 2 Schematic diagram of the enlarged structure of part A in FIG.

[0020] As shown in the figure: 1. bottom plate; 2. smelting device; 3. connecting device; 4. cooling device; 5. discharging device; 21. smelting furnace; 22. smelting assembly; 31. connecting assembly; 41. cooling furnace; 51. discharging assembly; 221. outer pipe; 222. branch pipe; 223. smelting port; 224. downstream plate; 311. connecting pipe; 312. valve; 42. cooling chassis; 511. electric pump; 512. discharging pipe; 513. first valve; 514. second valve. DETAILED DESCRIPTION

[0021] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limitations on the present invention. On the contrary, the embodiments of the present invention include all changes, modifications, and equivalents that fall within the spirit and connotation of the appended claims.

[0022] A waste steel slag comprehensive utilization and recovery smelting furnace according to an embodiment of the utility model will be described below in conjunction with the accompanying drawings.

[0023] like Figure 1-Figure 3As shown, a waste steel slag comprehensive utilization and recovery smelting furnace according to an embodiment of the utility model comprises a bottom plate 1, a smelting device 2, a connecting device 3, a cooling device 4 and a discharging device 5, wherein the smelting device 2 comprises a smelting furnace 21 and a smelting component 22, wherein the smelting furnace 21 is arranged on the bottom plate 1, and the smelting component 22 is arranged in the smelting furnace 21, the connecting device 3 comprises a connecting component 31, wherein the connecting component 31 is arranged on the bottom plate 1, and one end of the connecting component 31 is connected to the bottom of the smelting furnace 21, the cooling device 4 comprises a cooling furnace 41, wherein the cooling furnace 41 is arranged on the other side of the bottom plate 1, and the bottom of the cooling furnace 41 is connected to the other end of the connecting component 31, and the discharging device 5 comprises a discharging component 51, wherein the discharging component 51 is arranged on the bottom plate 1, and one end of the discharging component 51 is connected to the lower end of the cooling furnace 41.

[0024] Among them, it can be understood that the scrap steel slag is poured into the smelting furnace 21, the scrap steel slag is smelted through the smelting component 22, the smelted molten steel is transported to the cooling furnace 41 through the connecting component 31, and the molten steel is cooled by the cooling furnace 41. The cooled molten steel flows out through the discharging component 51 for reuse.

[0025] In one embodiment of the present invention, Figure 2 As shown, the smelting assembly 22 includes an outer tube 221, three branch tubes 222, multiple smelting ports 223 and a downflow plate 224, wherein the outer tube 221 is arranged on one side of the smelting furnace 21, and the outer tube 221 is connected to an external blast furnace, one end of the three branch tubes 222 is respectively connected to the outer tube 221, and the other end is respectively arranged in the smelting furnace 21, multiple smelting ports 223 are respectively arranged in the smelting furnace 21, and multiple smelting ports 223 are respectively connected to the three branch tubes 222, and the downflow plate 224 is arranged in the smelting furnace 21, and the downflow plate 224 is wide at the top and narrow at the bottom.

[0026] It can be understood that the heat generated by the external blast furnace is transmitted to the three branch pipes 222 through the outer pipe 221, and the waste steel slag is smelted through multiple smelting ports 223, and the smelted waste steel slag flows downward through the downstream plate 224.

[0027] It should be noted that the downstream plate 224 described in this embodiment is wide at the top and narrow at the bottom, so it can screen the waste steel slag. Only when the waste steel slag is melted to a certain degree can it flow into the next layer and be melted again through multiple melting ports 223. When the waste steel slag is melted to a smaller degree, it continues to flow downward through the downstream plate 224. After the waste steel slag is melted into molten steel at the bottom layer, it can flow into the bottom of the smelting furnace 21.

[0028] In one embodiment of the present invention, Figure 1As shown, the connecting component 31 includes a connecting pipe 311 and a plurality of valves 312 , wherein one end of the connecting pipe 311 is connected to the bottom of the smelting furnace 21 , and the plurality of valves 312 are respectively arranged on the connecting pipe 311 .

[0029] It can be understood that opening the valve 312 allows the molten steel to flow through the connecting pipe 311 and into the cooling furnace 41.

[0030] In one embodiment of the present invention, Figure 1 As shown, a cooling box 42 is disposed at the bottom of the cooling furnace 41 , the cooling box 42 is connected to the inside of the cooling furnace 41 , and the bottom of the cooling furnace 41 is connected to the other end of the connecting pipe 311 .

[0031] It can be understood that after the molten steel flows into the cooling furnace 41 , it is cooled by the cooling box 42 .

[0032] In one embodiment of the present invention, Figure 1 As shown, the discharge assembly 51 includes an electric pump 511, a discharge pipe 512, a first valve 513 and a second valve 514, wherein the electric pump 511 is arranged on the bottom plate 1, the discharge pipe 512 is respectively connected to both ends of the electric pump 511, and one end of the discharge pipe 512 is connected to one end of the cooling furnace 41, and the first valve 513 and the second valve 514 are respectively arranged at the front and rear ends of the discharge pipe 512.

[0033] It is understandable that, after the cooling furnace 41 has finished cooling the molten steel, the first valve 513 and the second valve 514 are opened, and the electric pump 511 is started to allow the molten steel to flow out of the cooling furnace 41 through the discharge pipe 512 .

[0034] Specifically, in the actual implementation process, the scrap steel slag is poured into the smelting furnace 21, and the heat generated by the external blast furnace is transmitted to the three branch pipes 222 through the outer pipe 221, and the scrap steel slag is smelted through multiple smelting ports 223. The smelted scrap steel slag flows downward through the downflow plate 224. Since the downflow plate 224 is wide at the top and narrow at the bottom, the scrap steel slag can be screened. Only when the scrap steel slag is melted to a certain degree can it flow into the next layer and be melted again through multiple smelting ports 223. When the scrap steel slag is melted to a smaller degree, it continues to flow downward through the downflow plate 224. The scrap steel slag is melted into molten steel at the bottom layer before it can flow into the bottom of the smelting furnace 21.

[0035] Open valve 312 to allow the molten steel to flow through the connecting pipe 311 and into the cooling furnace 41. After the molten steel flows into the cooling furnace 41, it is cooled by the cooling box 42. When the cooling furnace 41 finishes cooling the molten steel, open the first valve 513 and the second valve 514, and start the electric pump 511 to allow the molten steel to flow out of the cooling furnace 41 through the discharge pipe 512.

[0036] In summary, a waste steel slag comprehensive utilization and recovery smelting furnace in an embodiment of the utility model can efficiently convert waste steel slag into molten steel through smelting and cooling processes, thereby realizing high-value recovery and resource utilization of waste steel slag, which not only significantly reduces the occupation of land resources, but also effectively reduces environmental pollution, demonstrating the positive transformation of the steel industry towards green, circular and low-carbon development.

[0037] In the description of this specification, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0038] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0039] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in this field can change, modify, replace and deform the above embodiments within the scope of the present invention.

Claims

1. A waste steel slag comprehensive utilization recovery smelting furnace, characterized in that: It comprises a bottom plate (1), a smelting device (2), a connecting device (3), a cooling device (4) and a discharging device (5), wherein: The smelting device (2) comprises a smelting furnace (21) and a smelting assembly (22), wherein: The smelting furnace (21) is arranged on the bottom plate (1); The smelting assembly (22) is arranged in the smelting furnace (21); The connecting device (3) comprises a connecting component (31), wherein: The connecting component (31) is arranged on the bottom plate (1), and one end of the connecting component (31) is connected to the bottom of the smelting furnace (21); The cooling device (4) comprises a cooling furnace (41), wherein: The cooling furnace (41) is arranged on the other side of the bottom plate (1), and the bottom of the cooling furnace (41) is connected to the other end of the connecting component (31); The discharging device (5) comprises a discharging assembly (51), wherein: The discharge assembly (51) is arranged on the bottom plate (1), and one end of the discharge assembly (51) is connected to the lower end of the cooling furnace (41).

2. The waste steel slag comprehensive utilization recovery smelting furnace according to claim 1, characterized in that: The smelting assembly (22) comprises an outer tube (221), three branch tubes (222), a plurality of smelting ports (223) and a downstream plate (224), wherein: The outer tube (221) is arranged on one side of the smelting furnace (21), and the outer tube (221) is connected to an external blast furnace; One end of the three branch pipes (222) is respectively connected to the outer pipe (221), and the other end is respectively arranged in the smelting furnace (21); The plurality of smelting ports (223) are respectively arranged in the smelting furnace (21), and the plurality of smelting ports (223) are respectively connected to the three branch pipes (222); The downflow plate (224) is disposed in the smelting furnace (21), and the downflow plate (224) is wider at the top and narrower at the bottom.

3. The waste steel slag comprehensive utilization recovery smelting furnace according to claim 1, characterized in that: The communication component (31) comprises a connecting pipe (311) and a plurality of valves (312), wherein: One end of the connecting pipe (311) is connected to the bottom of the smelting furnace (21); The plurality of valves (312) are respectively arranged on the connecting pipe (311).

4. The waste steel slag comprehensive utilization recovery smelting furnace according to claim 3, characterized in that: A cooling box (42) is provided at the bottom of the cooling furnace (41); the cooling box (42) is connected to the inside of the cooling furnace (41); and the bottom of the cooling furnace (41) is connected to the other end of the connecting pipe (311).

5. The waste steel slag comprehensive utilization recovery smelting furnace according to claim 1, characterized in that: The discharge assembly (51) comprises an electric pump (511), a discharge pipe (512), a first valve (513) and a second valve (514), wherein: The electric pump (511) is arranged on the base plate (1); The discharge pipe (512) is respectively connected to both ends of the electric pump (511), and one end of the discharge pipe (512) is connected to one end of the cooling furnace (41); The first valve (513) and the second valve (514) are respectively arranged at the front and rear ends of the discharge pipe (512).

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