Smoke collecting system of electric furnace
By designing an electric furnace smoke collection system with parallel pipelines, the problem of poor smoke collection effect in the prior art is solved, and more efficient smoke collection and reduce smoke dissipation is achieved.
Patent Information
- Application Number
- CN202420570774.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-19
- Publication Date
- 2025-03-28
- Estimated Expiration
- 2034-03-19
AI Technical Summary
The existing electric furnace smoke collection system has unreasonable structure and poor smoke collection effect, resulting in flue gas dissipation and low-altitude pollution.
An electric furnace smoke collection system is designed, including a copper box, a slag box and a main pipeline, and is connected to the main pipeline through a number of parallel first and second pipelines, reducing the mutual suction influence between the pipelines and improving the smoke collection effect of the smoke.
The smoke collection effect of smoke in copper mouth and slag box is improved, and the flue gas escape and low-altitude pollution at the production site is reduced.
Smart Images
Figure CN222688868U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of electric furnace smoke collection, in particular to an electric furnace smoke collection system. Background Art
[0002] The electric furnace is used to separate the copper matte particles contained in the smelting slag discharged from the Austenitic furnace and to allow the copper concentrate that has not reacted completely in the Austenitic furnace to continue to react completely.
[0003] The electric furnace includes a plurality of copper ports and a plurality of slag ports, wherein the copper ports are used to discharge matte copper, and the slag ports are used to discharge electric furnace slag. The discharged matte copper and electric furnace slag will generate smoke containing harmful gases, so the smoke needs to be collected.
[0004] The electric furnace smoke collection system in the related art is used to collect smoke, but the structure is not reasonable and the smoke collection effect is poor. Utility Model Content
[0005] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the utility model is to provide an electric furnace smoke collection system for collecting smoke, which has a more reasonable structure and better smoke collection effect.
[0006] The electric furnace smoke collection system according to the embodiment of the utility model is applied to the electric furnace, and the electric furnace smoke collection system includes a copper box, a slag box and a main pipeline. The electric furnace includes a plurality of copper ports and a plurality of slag ports. The copper ports are used to discharge matte, and the slag ports are used to discharge electric furnace slag. The copper ports are connected to the copper box through a first discharge chute, and the slag ports are connected to the slag box through a second discharge chute. The main pipeline is connected to a gas conveying device to extract smoke;
[0007] Wherein, the electric furnace smoke collection system also includes multiple first pipelines, the first pipelines are connected to at least one of the copper openings and / or at least one of the copper boxes, and the multiple first pipelines are connected in parallel and are all connected to the main pipeline; and / or, the electric furnace smoke collection system also includes multiple second pipelines, the second pipelines are connected to at least one of the slag openings and / or one of the slag boxes, and the multiple second pipelines are connected in parallel and are all connected to the main pipeline.
[0008] According to the electric furnace smoke collection system of the embodiment of the utility model, multiple first pipelines connected with the copper mouth and / or the copper box are connected in parallel and are all connected to the main pipeline. In this way, the mutual suction between the multiple first pipelines is less affected, which is beneficial to improving the smoke collection effect on the smoke at the copper mouth and in the copper box; multiple second pipelines connected with the slag mouth and / or the slag box are connected in parallel and are all connected to the main pipeline. In this way, the mutual suction between the multiple second pipelines is less affected, which is beneficial to improving the smoke collection effect on the smoke at the slag mouth and in the slag box; therefore, the electric furnace smoke collection system of the utility model is more reasonably designed and has a better smoke collection effect, which can reduce smoke escape at the production site and reduce low-altitude pollution.
[0009] In some embodiments, the electric furnace smoke collection system includes a third pipeline, and outlets of a plurality of the first pipelines are connected to the main pipeline through the third pipeline.
[0010] In some embodiments, the number of the copper ports connected to the plurality of first pipelines is equal.
[0011] In some embodiments, a plurality of the copper boxes are connected to the same first pipeline.
[0012] In some embodiments, the plurality of slag boxes are respectively connected to the main pipeline through a plurality of the second pipelines.
[0013] In some embodiments, the electric furnace smoke collection system also includes a fourth pipeline, the slag outlet and the slag compartment are arranged in different second pipelines, multiple slag outlets are respectively arranged in multiple second pipelines, and the multiple second pipelines with the slag outlets are connected to the main pipeline through the fourth pipeline.
[0014] In some embodiments, valves are provided between the copper port and the first pipeline, between the copper box and the first pipeline, between the slag port and the second pipeline, and between the slag box and the second pipeline.
[0015] In some embodiments, the copper box is a sealed copper box, and the slag box is a sealed slag box.
[0016] In some embodiments, the first discharge chute and the second discharge chute both include a silicon carbide chute and a cover plate, and the cover plate is covered on the slot opening of the silicon carbide chute; or, the first discharge chute and the second discharge chute both include a copper chute and a cover plate, and the cover plate is covered on the slot opening of the copper chute.
[0017] In some embodiments, the inner diameter of the slag opening is 120 mm.
[0018] 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
[0019] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:
[0020] Figure 1 It is a schematic diagram of the partial structure of the electric furnace smoke collection system according to an embodiment of the utility model.
[0021] Figure 2 It is a structural schematic diagram of an electric furnace in an electric furnace smoke collection system according to an embodiment of the utility model.
[0022] Reference numerals:
[0023] Electric furnace smoke collection system 100;
[0024] Electric furnace 10; copper port 101; slag port 102; copper box 20; slag box 30; main pipeline 40;
[0025] A first discharge tank 50; a second discharge tank 60; a first pipeline 70; a second pipeline 80; a third pipeline 90;
[0026] Fourth pipeline 110; valve 120. DETAILED DESCRIPTION
[0027] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0028] Unless otherwise defined, all technical and scientific terms used in the present invention have the same meanings as those generally understood by technicians in the technical field of the present invention; the terms used in the present invention and in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention; the terms "including" and "having" and any variations thereof in the specification and claims of the present invention and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of the present invention or the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order or a primary and secondary relationship.
[0029] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection", "connection", and "attachment" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0030] The term "and / or" in the present invention is only a description of the association relationship of the associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in the present invention generally indicates that the associated objects before and after are in an "or" relationship.
[0031] In the embodiments of the present invention, the same reference numerals represent the same components, and for the sake of brevity, detailed descriptions of the same components are omitted in different embodiments. It should be understood that the thickness, length, width and other dimensions of various components in the embodiments of the present invention shown in the drawings, as well as the overall thickness, length, width and other dimensions of the integrated device are only exemplary and should not constitute any limitation on the present invention.
[0032] The term "plurality" used in the present invention refers to more than two (including two).
[0033] Combine the following Figure 1 and Figure 2 The electric furnace smoke collection system 100 of the present invention is described.
[0034] like Figure 1 and Figure 2 As shown, the electric furnace smoke collection system 100 according to the embodiment of the utility model is applied to the electric furnace 10, and the electric furnace smoke collection system 100 includes a copper box 20, a slag box 30 and a main pipeline 40. The electric furnace 10 includes a plurality of copper ports 101 and a plurality of slag ports 102. The copper ports 101 are used to discharge matte, and the slag ports 102 are used to discharge electric furnace slag. The copper ports 101 are connected to the copper box 20 through a first discharge trough 50, and the slag ports 102 are connected to the slag box 30 through a second discharge trough 60. The main pipeline 40 is connected to the gas The conveying equipment is connected to extract smoke; wherein the electric furnace smoke collection system 100 also includes a plurality of first pipelines 70, the first pipelines 70 are connected to at least one copper port 101 and / or at least one copper box 20, and the plurality of first pipelines 70 are connected in parallel and are all connected to the main pipeline 40; and / or, the electric furnace smoke collection system 100 also includes a plurality of second pipelines 80, the second pipelines 80 are connected to at least one slag port 102 and / or one slag box 30, and the plurality of second pipelines 80 are connected in parallel and are all connected to the main pipeline 40.
[0035] Specifically, the copper port 101 is used to discharge matte copper, and the slag port 102 is used to discharge electric furnace slag. The matte copper and electric furnace slag will produce smoke containing sulfur dioxide, which is harmful to the human body, and the escape will cause low-altitude pollution.
[0036] The copper mouth 101 is connected to the copper box 20 through the first discharge chute 50, that is, the molten copper matte discharged from the copper mouth 101 will flow to the copper box 20 through the first discharge chute 50, and there is smoke in the copper box 20, the first discharge chute 50 and the copper mouth 101. More specifically, a copper matte bun for containing copper matte is provided in the copper box 20, and the copper matte bun is a mold for containing copper matte.
[0037] The slag opening 102 is connected to the slag box 30 through the second discharge chute 60 , that is, the electric furnace slag discharged from the slag opening 102 will be discharged into the slag box 30 through the second discharge chute 60 , and there is flue gas in the slag box 30 , the second discharge chute 60 and the slag opening 102 .
[0038] The main pipeline 40 is connected to a gas delivery device to extract the flue gas; for example, the gas delivery device may be a fan, etc. The gas delivery device draws the flue gas into the main pipeline 40, and the flue gas enters the tail gas treatment component through the main pipeline 40 for treatment, and is discharged to the atmosphere after being treated as qualified. For example, the flue gas will enter the sulfuric acid process for desulfurization treatment.
[0039] The electric furnace smoke collection system 100 further includes a plurality of first pipelines 70, and the first pipelines 70 are connected to at least one copper port 101 and / or at least one copper box 20. That is, one first pipeline 70 can be connected to only one copper port 101, or one first pipeline 70 can be connected to two copper ports 101 or three copper ports 101 at the same time; one first pipeline 70 can be connected to only one copper box 20, or one first pipeline 70 can be connected to two copper boxes 20 or three copper boxes 20 at the same time; or one first pipeline 70 can be connected to both the copper port 101 and the copper box 20. The first pipeline 70 connected to the copper port 101 can draw smoke from the first discharge trough 50.
[0040] The multiple first pipelines 70 are connected in parallel and are all connected to the main pipeline 40, which includes: one end of the multiple first pipelines 70 is connected to the third pipeline 90, the third pipeline 90 is connected to the main pipeline 40 to connect the multiple first pipelines 70 and the main pipeline 40, and the multiple first pipelines 70 are not connected except for one end; and one end of the multiple first pipelines 70 is directly connected to the main pipeline 40, and the multiple first pipelines 70 are not connected except for one end. In this way, the mutual suction between the multiple first pipelines 70 is less affected, which is conducive to improving the smoke collection effect of the copper mouth 101 and the smoke in the copper box 20, reducing smoke escaping at the production site, and reducing low-altitude pollution.
[0041] The electric furnace smoke collection system 100 further includes a plurality of second pipelines 80, and the second pipelines 80 are connected to at least one slag opening 102 and / or one slag bag 30. That is, one second pipeline 80 may be connected to only one slag opening 102, or one second pipeline 80 may be connected to two slag openings 102 or three slag openings 102 at the same time, etc.; one second pipeline 80 may be connected to only one slag bag 30, or one second pipeline 80 may be connected to two slag bags 30 or three slag bags 30 at the same time, etc.; or one second pipeline 80 may be connected to both the slag opening 102 and the slag bag 30. The second pipeline 80 connected to the slag opening 102 may draw smoke from the second discharge chute 60.
[0042] The multiple second pipelines 80 are connected in parallel and are all connected to the main pipeline 40. This includes that one end of the multiple second pipelines 80 is connected to the fourth pipeline 110, the fourth pipeline 110 is connected to the main pipeline 40 to connect the multiple second pipelines 80 and the main pipeline 40, and the multiple second pipelines 80 are not connected except for one end; and one end of the multiple second pipelines 80 is directly connected to the main pipeline 40, and the multiple second pipelines 80 are not connected except for one end. In this way, the mutual suction between the multiple second pipelines 80 has little influence, which is conducive to improving the smoke collection effect of the slag mouth 102 and the smoke in the slag box 30, reducing smoke escape at the production site, and reducing low-altitude pollution.
[0043] According to the electric furnace smoke collection system 100 of the embodiment of the utility model, a plurality of first pipelines 70 connected to the copper mouth 101 and / or the copper box 20 are connected in parallel and are all connected to the main pipeline 40, so that the mutual suction between the plurality of first pipelines 70 has little influence, which is beneficial to improving the smoke collection effect on the copper mouth 101 and the smoke in the copper box 20; a plurality of second pipelines 80 connected to the slag mouth 102 and / or the slag box 30 are connected in parallel and are all connected to the main pipeline 40, so that the mutual suction between the plurality of second pipelines 80 has little influence, which is beneficial to improving the smoke collection effect on the smoke at the slag mouth 102 and the smoke in the slag box 30; therefore, the electric furnace smoke collection system 100 of the utility model is more reasonably designed and has a better smoke collection effect, which can reduce smoke escape at the production site and reduce low-altitude pollution.
[0044] In some embodiments, the electric furnace smoke collection system 100 includes a third pipeline 90, and the outlets of the plurality of first pipelines 70 are all connected to the main pipeline 40 through the third pipeline 90. In this way, the total length of the pipelines of the electric furnace smoke collection system 100 is short, the pipeline occupies less space, and the cost is low. Among the plurality of first pipelines 70, only the outlets of some of the first pipelines 70 can be connected to the main pipeline 40 through the third pipeline 90, and the outlets of the other first pipelines 70 can be directly connected to the main pipeline 40; or, for example, Figure 1 As shown, the outlets of the plurality of first pipelines 70 are all connected to the main pipeline 40 through the third pipeline 90 .
[0045] In some embodiments, the number of copper ports 101 connected to the plurality of first pipelines 70 is equal. In this way, the uniformity of the suction force at the plurality of copper ports 101 is better, which is conducive to ensuring the smoke collection effect at the plurality of copper ports 101. Figure 1 As shown, two first pipelines 70 are provided, and each first pipeline 70 is provided with two copper ports 101 .
[0046] In some embodiments, one end of the first pipeline 70 is connected to the main pipeline 40, and the other end of the first pipeline 70 is sealed with a blind plate.
[0047] In some embodiments, Figure 1 As shown, a plurality of copper boxes 20 are connected to the same first pipeline 70. In this way, on the one hand, the pipeline arrangement of the electric furnace smoke collection system in the related art is slightly changed, and the total pipeline length of the electric furnace smoke collection system 100 is short; on the other hand, when a part of the copper boxes 20 among the plurality of copper boxes 20 is connected to the first pipeline 70, the other part of the copper boxes 20 is not connected to the first pipeline 70, so the suction force at a part of the copper boxes 20 and the suction force at another part of the copper boxes 20 will not affect each other, so that the plurality of copper boxes 20 can be connected to the same first pipeline 70.
[0048] In some embodiments, Figure 1 As shown, part of the copper ports 101 and a plurality of copper boxes 20 can be connected to the same first pipeline 70, so as to reduce the modification of the pipeline layout of the electric furnace smoke collection system in the related art and reduce the difficulty of modification.
[0049] In some embodiments, Figure 1 As shown, the plurality of slag boxes 30 are respectively connected to the main pipeline 40 through the plurality of second pipelines 80. That is, each slag box 30 is directly connected to the main pipeline 40 through a second pipeline 80, so that the pipeline connected to the slag box 30 has fewer elbows, a shorter pipeline length, and a smaller pipeline pressure loss, so that the suction force at the corresponding slag box 30 is greater, the smoking effect is better, and the smoke in the smoke is not easy to gather in the second pipeline 80.
[0050] In some embodiments, Figure 1As shown, the electric furnace smoke collection system 100 also includes a fourth pipeline 110, the slag opening 102 and the slag bag 30 are arranged in different second pipelines 80, and multiple slag openings 102 are respectively arranged in multiple second pipelines 80, and the multiple second pipelines 80 with the slag opening 102 are connected to the main pipeline 40 through the fourth pipeline 110. The smoke concentration at the slag opening 102 and the slag bag 30 is relatively large, the slag opening 102 and the slag bag 30 are arranged in different second pipelines 80, the second pipeline 80 arranged in the slag bag 30 is directly connected to the main pipeline 40, and the second pipeline 80 arranged in the slag opening 102 is connected to the main pipeline 40 through the fourth pipeline 110. On the one hand, the smoke collection effect at the slag opening 102 can be improved, the smoke escape at the slag opening 102 and the second discharge trough 60 can be reduced, and the low-altitude pollution degree can be reduced; on the other hand, the possibility of dust-containing smoke gathering in the second pipeline 80 can be reduced, which is conducive to reducing the possibility of blockage of the second pipeline 80 and improving the smoke collection effect.
[0051] In some embodiments, Figure 1 As shown, valves 120 are provided between the copper port 101 and the first pipeline 70, between the copper box 20 and the first pipeline 70, between the slag port 102 and the second pipeline 80, and between the slag box 30 and the second pipeline 80. It can be understood that the total suction force and air volume of the main pipeline 40 are fixed. By setting the valve 120, the suction state at the copper port 101, the copper box 20, the slag port 102, and the slag box 30 can be flexibly adjusted by the valve 120, so as to achieve the target effect of the smoke collection effect at certain positions or adapt to various working conditions according to the needs.
[0052] For example, in an embodiment where the electric furnace 10 includes four copper ports 101 and four copper boxes 20, when the electric furnace 10 is in operation, when two copper ports 101 are in a fully open state to discharge matte, the two copper ports 101 and the copper boxes 20 corresponding to the two copper ports 101 are connected to the first pipeline 70; at the same time, the other two copper ports 101 are in a closed state, and matte is not discharged, the first discharge chute 50 is not connected to the copper box 20, and the valve 120 between the copper box 20 and the first pipeline 70 is in a closed state, but the valve 120 between the copper port 101 and the first pipeline 70 remains slightly open, so that the smoke in the first discharge chute 50 can be sucked and collected into the main pipeline 40 via the first pipeline 70, so as to reduce the residual smoke in the first discharge chute 50 from escaping into the external environment. By setting the valve 120, the suction loss can be reduced and the smoke collection effect at the position with higher smoke concentration can be improved.
[0053] In some embodiments, the copper box 20 is a sealed copper box, and the slag box 30 is a sealed slag box. In this way, the possibility of smoke escaping from the copper box 20 or the slag box 30 to the surrounding environment can be reduced, and a good smoke collection effect can also be ensured.
[0054] In some embodiments, the first discharge chute 50 and the second discharge chute 60 both include a silicon carbide chute and a cover plate, and the cover plate is covered on the notch of the silicon carbide chute; or, the first discharge chute 50 and the second discharge chute 60 both include a copper chute and a cover plate, and the cover plate is covered on the notch of the copper chute. It should be noted that in order to ensure the use effect of the first discharge chute 50 and the second discharge chute 60, it is necessary to clean the first discharge chute 50 and the second discharge chute 60 regularly, and the cover plate is directly covered on the notch of the silicon carbide chute or the notch of the copper chute, so that the cover plate can be easily removed, and it is more convenient to clean the first discharge chute 50 and the second discharge chute 60. The first discharge chute 50 and the second discharge chute 60 including the silicon carbide chute or the copper chute have better anti-metal penetration performance.
[0055] More specifically, the main components of the silicon carbide chute include C, SiO2, and 40% to 60% SiC, and the main component of the copper chute is copper (99%).
[0056] More specifically, the first discharge trough 50 and the second discharge trough 60 are both formed by splicing a plurality of silicon carbide chutes or copper chutes. The cover plate is an iron cover plate, which is heat-resistant and not easy to deform, light in weight, easy to take and put, low in price, economical and practical.
[0057] In some embodiments, the inner diameter of the slag opening 102 is 120 mm. It should be noted that the inner diameter of the slag opening 102 in the present invention is smaller, so that the flow rate of the electric furnace slag discharged from the slag opening 102 is smaller, reducing the impact pressure generated by the electric furnace slag, and facilitating the blocking of the slag opening 102. In some embodiments, the inner diameter of the slag opening 102 can also be 121 mm, 122 mm, 119 mm, 118 mm, or any value between two of these values.
[0058] In a specific embodiment, the inner diameter of the copper port 101 can be 15 mm, and the area of the electric furnace 10 can be 88 m 2 The number of slag openings 102 can be two. According to the amount of slag discharged from the electric furnace, the two slag openings 102 can be opened at the same time or in sequence.
[0059] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.
Claims
1. An electric furnace smoke collection system, applied to an electric furnace (10), characterized in that: The electric furnace (10) comprises a copper box (20), a slag box (30) and a main pipeline (40), wherein the electric furnace (10) comprises a plurality of copper ports and a plurality of slag ports, wherein the copper ports are used to discharge matte, and the slag ports are used to discharge electric furnace slag, wherein the copper ports are connected to the copper box (20) via a first discharge chute (50), and the slag ports are connected to the slag box (30) via a second discharge chute (60), and the main pipeline (40) is connected to a gas conveying device to extract smoke; Wherein, the electric furnace smoke collection system further includes a plurality of first pipelines (70), wherein the first pipelines (70) are connected to at least one of the copper openings and / or at least one of the copper boxes (20), and the plurality of first pipelines (70) are connected in parallel and are all connected to the main pipeline (40); and / or, the electric furnace smoke collection system further includes a plurality of second pipelines (80), wherein the second pipelines (80) are connected to at least one of the slag openings and / or one of the slag boxes (30), and the plurality of second pipelines (80) are connected in parallel and are all connected to the main pipeline (40).
2. The electric furnace smoke collection system according to claim 1, characterized in that: It comprises a third pipeline (90), and outlets of a plurality of the first pipelines (70) are all connected to the main pipeline (40) through the third pipeline (90).
3. The electric furnace smoke collection system according to claim 1, characterized in that: The number of the copper ports connected to the plurality of first pipelines (70) is equal.
4. The electric furnace smoke collection system according to any one of claims 1 to 3, characterized in that: A plurality of the copper boxes (20) are connected to the same first pipeline (70).
5. The electric furnace smoke collection system according to claim 1, characterized in that: The plurality of slag boxes (30) are respectively connected to the main pipeline (40) via a plurality of the second pipelines (80).
6. The electric furnace smoke collection system according to claim 1 or 5, characterized in that: It also includes a fourth pipeline, the slag outlet and the slag compartment (30) are arranged in different second pipelines (80), a plurality of slag outlets are respectively arranged in a plurality of second pipelines (80), and the plurality of second pipelines (80) provided with the slag outlets are connected to the main pipeline (40) through the fourth pipeline.
7. The electric furnace smoke collection system according to claim 1, characterized in that: Valves are provided between the copper port and the first pipeline (70), between the copper box (20) and the first pipeline (70), between the slag port and the second pipeline (80), and between the slag box (30) and the second pipeline (80).
8. The electric furnace smoke collection system according to claim 1, characterized in that: The copper box (20) is a sealed copper box, and the slag box (30) is a sealed slag box.
9. The electric furnace smoke collection system according to claim 1, characterized in that: The first discharge chute (50) and the second discharge chute (60) both comprise a silicon carbide chute and a cover plate, wherein the cover plate is disposed on a slot opening of the silicon carbide chute; or the first discharge chute (50) and the second discharge chute (60) both comprise a copper chute and a cover plate, wherein the cover plate is disposed on a slot opening of the copper chute.
10. The electric furnace smoke collection system according to claim 1, characterized in that: The inner diameter of the slag opening is 120 mm.