Six-electrode ferroalloy submerged arc furnace

Abstract

The utility model belongs to the field of smelting, and particularly relates to a six-electrode ferroalloy submerged arc furnace which comprises a first electrode group, a second electrode group, a first transformer group and a second transformer group, the first electrode group comprises three first electrodes which are arranged in a triangular shape, the first transformer group comprises three first transformers, and every two first electrodes are connected through one first transformer; the second electrode group comprises three triangular second electrodes, the second transformer group comprises three second transformers, and every two second electrodes are connected through one second transformer; the first electrodes and the second electrodes are uniformly arranged at intervals around the same axis, and through the arrangement of the six electrodes, the diameters of the electrodes can be effectively reduced, and heating points are increased, so that a better heating effect is obtained.

Description

Technical Field

[0001] This utility model belongs to the field of metallurgy and mining, and in particular relates to a six-electrode ferroalloy submerged arc furnace. Background Technology

[0002] Currently, most ferroalloy submerged arc furnaces employ a three-electrode design. To improve furnace efficiency and increase product output without increasing labor costs, manufacturers are attempting to increase furnace power. As furnace power demands rise, the electrode diameter in three-electrode submerged arc furnaces is correspondingly expanding. Since most submerged arc furnaces use self-baking electrodes, the baking process relies primarily on the current flowing through the electrodes. However, when using alternating current, the skin effect is significant, causing current to flow mainly through the outer surface of the electrode, potentially resulting in insufficient baking at the electrode center. This effect is more pronounced when the electrode diameter becomes excessively large, easily leading to incomplete baking within the electrode. Such uneven baking increases the risk of electrode failure, such as petal breakage, hard breakage, and soft breakage. These failures not only affect the electrode's performance and lifespan but also cause production interruptions, resulting in significant economic losses for the company. Therefore, optimizing electrode design and improving the baking process are crucial for enhancing the operating efficiency of submerged arc furnaces and reducing maintenance costs. Based on the above reasons, this patent proposes a six-electrode smelting arrangement method for ferroalloy submerged arc furnace, which effectively solves the problem of effective smelting area of ​​submerged arc furnace caused by the increase in power in the original ferroalloy smelting method, making submerged arc furnace smelting more efficient. Utility Model Content

[0003] The purpose of this invention is to provide a six-electrode ferroalloy submerged arc furnace to solve the problems existing in the prior art. To achieve the above-mentioned objective, the technical solution adopted by this invention is as follows:

[0004] A six-electrode ferroalloy submerged arc furnace includes a first electrode group, a second electrode group, a first transformer group, and a second transformer group. The first electrode group includes three first electrodes arranged in a triangular configuration, and the first transformer group includes three first transformers. Two first electrodes are connected through one of the first transformers. The second electrode group includes three second electrodes arranged in a triangular configuration, and the second transformer group includes three second transformers. Two second electrodes are connected through one of the second transformers. The first and second electrodes are evenly spaced around the same axis.

[0005] Furthermore, it also includes a support plate, with the top of the first electrode group detachably connected to the support plate, and the top of the second electrode group detachably connected to the support plate; the support plate is provided with a first transformer group and a second transformer group.

[0006] Furthermore, it also includes a top cover, which has six limiting holes evenly distributed around its center circumference. An insulating sleeve is fitted inside each limiting hole, and the insulating sleeve is slidably connected to the first electrode and the second electrode.

[0007] Furthermore, an air vent is provided through the top of the cover.

[0008] Furthermore, it also includes a furnace body, with the top of the furnace body and the bottom of the top cover being detachably connected. A feed inlet is provided through the side wall of the furnace body, and a discharge outlet is provided through the bottom of the furnace body.

[0009] This invention offers the following advantages: By introducing a six-electrode configuration, the electrode diameter is reduced under the same power conditions, improving the electrode roasting effect and thus reducing the probability of electrode accidents. Simultaneously, the increased number of heating points within the furnace results in a more uniform power distribution, leading to more stable furnace conditions, improved production efficiency, and reduced energy consumption. Furthermore, by configuring a first electrode group and a first transformer group, a second electrode group, and a second transformer group, compared to other devices using a six-electrode configuration at the same power, the current density at the end of each electrode can be reduced. This reduces electrode consumption and slows down the rate of damage to the furnace bottom. Attached Figure Description

[0010] Figure 1 This is a perspective view of this application;

[0011] Figure 2 This is a 3D view of the top cover. Detailed Implementation

[0012] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Unless otherwise specified, the technical means used in the embodiments are conventional means well known to those skilled in the art.

[0013] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and 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. Therefore, they should not be construed as limitations on this utility model.

[0014] like Figure 1-2As shown, a six-electrode ferroalloy submerged arc furnace includes a first electrode group, a second electrode group, a first transformer group, and a second transformer group. The first electrode group includes three first electrodes 2 arranged in a triangle. The first transformer group includes three first transformers 4. Two first electrodes 2 are connected through one of the first transformers 4. Therefore, the three first electrodes 2 are interconnected through the three first transformers 4 to form a circuit. The two first transformers 4 connected to the same first electrode 2 are respectively connected to the two ends of the first electrode 2 (the same applies to the second electrodes and the second transformers). The second electrode group includes three second electrodes 3 arranged in a triangle. The second transformer group includes three second transformers 5. Two second electrodes 3 are connected through one of the first transformers 4. The electrodes are connected via one of the second transformers 5. The first electrode 2 and the second electrode 3 are evenly spaced around the same axis, with all three first electrodes 2 and three second electrodes 3 arranged on the same circumference. The first electrode group and the first transformer group are mutually matched, as are the second electrode group and the second transformer group, equivalent to two sets of transformer and electrode structures in a traditional three-electrode ferroalloy submerged arc furnace. One circuit is formed between the three first transformers 4, and another circuit is formed between the three second transformers 5. The two sets of transformers are equivalent to two sets of isolation transformers, ensuring that the current between the two sets of electrodes is independent and does not affect each other. A better melting effect is achieved by separately supplying power to the first and second transformer groups. In this application, the number of electrodes is increased, and the electrode diameter is reduced under the same power conditions, improving the electrode roasting effect and reducing the probability of electrode accidents. Simultaneously, the introduction of a six-electrode design increases the number of heating points in the furnace, resulting in a more uniform power distribution within the furnace, leading to more stable furnace conditions, improved production efficiency, and reduced energy consumption. Furthermore, by configuring a first electrode group and a first transformer group, a second electrode group and a second transformer group, and using a six-electrode configuration at the same power compared to other devices, the current density at the end of each electrode can be reduced, which can reduce electrode consumption and slow down the rate of damage to the furnace bottom.

[0015] In addition, it includes a support plate 1, which is a lifting platform capable of moving the electrodes up and down. The support plate 1 is connected to an external fixing device, such as a column or a support connected to the ground. The top of the first electrode group and the top of the second electrode group are detachably connected to the support plate 1. Various connection methods exist between the tops of the first and second electrode groups and the support plate 1, including threaded connections. The support plate 1 should be made of insulating and high-temperature resistant material, such as ceramic. The support plate 1 houses the first and second transformer groups. It also includes a top cover 7, which has six evenly spaced limiting ports 701 around its center. An insulating sleeve 702 is fitted inside each limiting port 701, and the insulating sleeve 702 is slidably connected to the first electrode 2 and the second electrode 3. An air outlet 6 is provided through the top of the top cover 7. It also includes a furnace body 9, the top of which is detachably connected to the bottom of the top cover 7. The furnace body 9 and the top cover 7 are preferably connected by bolts and threads. The bottom of the furnace body 9 is placed on an external support. A feed port 8 is provided through the side wall of the furnace body 9 for filling materials, and a discharge port 10 is provided through the bottom of the furnace body 9 for discharging molten materials. The air outlet 6, the feed port 8, and the discharge port 10 are all openable and can be controlled by valves.

[0016] Working principle: When in use, raise the first electrode group and the second electrode group to the highest position, close the top cover 7 and the discharge port 10, open the air outlet 6 and the feed port 8, fill the furnace body 9 with material, lower the first electrode group and the second electrode group, and the external power supply supplies power to the first transformer group and the second transformer group to make the first electrode group and the second electrode group heat up and roast the material. The roasted material is discharged through the discharge port 10.

[0017] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Any modifications, alterations, alterations, or substitutions made by those skilled in the art to the technical solutions of the present utility model without departing from the spirit of the present utility model shall fall within the protection scope defined by the claims of the present utility model.

Claims

1. A six electrode ferroalloy submerged arc furnace characterized by: It includes first electrode group, second electrode group, first transformer group and second transformer group;The first electrode group includes three first electrodes (2) arranged in a triangle, the first transformer group includes three first transformers (4), two first electrodes (2) are connected by one of the first transformers (4);The second electrode group includes three second electrodes (3) arranged in a triangle, the second transformer group includes three second transformers (5), two second electrodes (3) are connected by one of the second transformers (5);The first electrode (2) and the second electrode (3) are uniformly spaced around the same axis.

2. A six electrode ferroalloy electric arc furnace as claimed in claim 1, characterized in that: It also includes a support plate (1), the top of the first electrode group is detachably connected with the support plate (1), and the top of the second electrode group is detachably connected with the support plate (1);The support plate (1) is provided with the first transformer group and the second transformer group.

3. A six electrode ferroalloy electric arc furnace as claimed in claim 1, characterized in that: It also includes a top cover (7), the top cover (7) is uniformly provided with six limiting openings (701) circumferentially around the center, the limiting opening (701) is provided with an insulating sleeve (702), and the insulating sleeve (702) is slidably connected with the first electrode (2) and the second electrode (3).

4. A six electrode ferroalloy electric arc furnace as claimed in claim 3, characterized in that: The top cover (7) is provided with an air outlet (6) at the top.

5. A six electrode ferroalloy electric arc furnace as claimed in claim 3, characterized in that: It also includes a furnace body (9), the top of the furnace body (9) is detachably connected with the bottom of the top cover (7), the sidewall of the furnace body (9) is provided with a feeding port (8), and the bottom of the furnace body (9) is provided with a discharging port (10).

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