A low-energy-consumption submerged arc furnace for producing silicon-manganese alloy

Abstract

This invention discloses a low-energy-consumption submerged arc furnace for producing ferrosilicon alloys, relating to the field of submerged arc furnace technology. The low-energy-consumption submerged arc furnace for producing ferrosilicon alloys includes a furnace body and further includes: a self-baking electrode, one end of which is inserted into the furnace body, and the other end exposed above the furnace body. An electrode shell is welded to the upper end of the self-baking electrode, and die holes are uniformly formed on the sidewall of the electrode shell. Electrode paste is sintered inside the electrode shell to continuously extend the length of the self-baking electrode; and a grooving die head is located outside the electrode shell. In this low-energy-consumption submerged arc furnace for producing ferrosilicon alloys, the self-baking electrode extends its length by sintering electrode paste inside the electrode shell. The conductive fins can be reused, significantly extending the replacement cycle of the conductive fins and saving costs. Furthermore, since the conductive fins are not lowered into the furnace along with the self-baking electrode, there is no need to set large holes in the furnace cover, greatly reducing the amount of sparks ejected from the furnace.

Description

Technical Field

[0001] This invention relates to the field of submerged arc furnace technology, specifically to a low-energy-consumption submerged arc furnace for producing silicon-manganese alloys. Background Technology

[0002] In the vast system of the steel industry, ferrosilicon manganese alloy, as an important alloying additive, is widely used in the steelmaking process, playing a crucial role in improving the strength, toughness, and corrosion resistance of steel. For a long time, traditional submerged arc furnaces have dominated ferrosilicon manganese alloy production, but their energy consumption has always been a major constraint on the industry's development. During the operation of traditional submerged arc furnaces, a large amount of electrical energy is consumed in maintaining high-temperature reactions and compensating for equipment heat losses, resulting in persistently high production costs for ferrosilicon manganese alloys. Taking a certain traditional large-scale submerged arc furnace as an example, its electricity consumption for producing one ton of ferrosilicon manganese alloy is as high as 4000-4500 kWh, which not only causes enormous energy waste but also limits the economic benefits and market competitiveness of enterprises. Against the backdrop of global advocacy for energy conservation, emission reduction, and green development, reducing the energy consumption of ferrosilicon manganese alloy production is urgent, and the research and application of low-energy-consumption submerged arc furnaces has become the key to breaking the industry's deadlock.

[0003] Current submerged arc furnaces use three electrically energized electrodes for heating, held in place by a holder. However, this type of holder uses conductive tile electrodes, resulting in high resistance. Therefore, a combined electrode holder has been developed, which must be used with a combined electrode shell. The combined electrode shell is constructed by welding several arc plates and stiffeners together, with several raised fins on its periphery. Each fin corresponds to a set of conductive elements that clamp the raised fins of the electrode shell, conducting electricity to the shell, and then through the shell to the pre-baked electrode working section inside, thus completing the holder's power transmission function. Another function of the holder is electrode pressing and releasing. This refers to displacing the electrode shell, the electrode paste inside the shell, and the electrode working end (baked from the electrode paste) downwards relative to the conductive element set by a certain stroke to compensate for the wear and tear on the electrode working end.

[0004] However, the fins directly welded to the outside of the electrode shell are consumed along with the electrode and cannot be reused. Furthermore, because the outer ends of the fins need to be clamped, the diameter of the circular structure formed by the outer ends of multiple fins is inevitably larger than the diameter of the self-baking electrode itself. However, if the fins and the self-baking electrode are to be inserted into the furnace body simultaneously, holes with a diameter at least the same as or larger than the diameter of the circular structure formed by the outer ends of multiple fins must be provided on the furnace cover. This results in a large space for the sparks generated by the reaction inside the furnace to be ejected outward, affecting the reaction effect. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a low-energy-consumption submerged arc furnace for producing silicon-manganese alloys, which solves the problems that the fins are consumed along with the electrodes and cannot be reused, as well as the large space for sparks generated by the reaction inside the furnace to be ejected outwards.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a low-energy-consumption submerged arc furnace for producing ferrosilicon manganese alloy, comprising a furnace body, and further comprising:

[0007] The self-baking electrode has one end inserted into the submerged arc furnace body and the other end exposed above the submerged arc furnace body. An electrode shell is welded to the upper end of the self-baking electrode. The side wall of the electrode shell is uniformly provided with mold holes. The electrode paste is sintered in the electrode shell to continuously extend the length of the self-baking electrode.

[0008] The grooving die head is located on the periphery of the electrode shell and is opposite to the die hole. The periphery of the grooving die head is provided with a pushing component that can pass through and insert the grooving die head into the electrode shell, so that multiple electrode slots are formed along its circumference after the electrode paste is sintered.

[0009] The first gripper includes a gripper housing, a clamping component is provided on the upper part of the gripper housing, an assembly cavity is provided in the area on the lower side wall of the gripper housing that is perpendicular to the mold hole, a conductive fin is provided in the assembly cavity, clamping blocks are provided on both sides of the conductive fin, and the first gripper is provided with an insertion structure for pushing the conductive fin into the electrode slot.

[0010] Furthermore, the clamping assembly includes clamping tiles, which are evenly arranged in an arc shape around the self-baking electrode, and the clamping tiles clamp the self-baking electrode by hydraulic pressure.

[0011] An arc-shaped conductor is fitted around the conductive fins, and the arc-shaped conductor can be pressed against the outer surface of the self-baking electrode when the conductive fins are inserted into the electrode slot.

[0012] The insertion structure includes a plate hydraulic cylinder, which is located in the area on the periphery of the holder housing opposite to the conductive fins, and is used to control the insertion or removal of the conductive fins from the electrode slot.

[0013] Furthermore, the assembly cavity is also provided with a clamping drive component, which is used to control the clamping block to clamp the conductive fins when the insertion structure pushes the conductive fins into the groove structure.

[0014] The conductive fin is provided with a conical seat at one end near the insert hydraulic cylinder;

[0015] The clamping drive includes:

[0016] Side wedge blocks are located on both sides of the conical seat. A swing arm is hinged to the end of the side wedge block away from the spring seat. The middle part of the swing arm is rotatably mounted in the assembly cavity via a central shaft. The other end of the swing arm is hinged to the clamping block.

[0017] Furthermore, a diaphragm spring is installed at the end of the side wedge block away from the conical seat, and the diaphragm spring is fixed to the side wall of the assembly cavity by a spring seat.

[0018] Furthermore, the conductive fin has a structure with one large end and one small end, with the end closer to the center of the self-baking electrode being the small end;

[0019] The arc-shaped conductor has trapezoidal holes in opposite areas. After the conductive fins are fully inserted into the electrode slots, the conductive fins can press the arc-shaped conductors onto the outer surface of the self-baking electrode by applying pressure to the trapezoidal holes.

[0020] Furthermore, the clamping assembly includes wedge-shaped clamping pads, which are evenly arranged in an arc shape around the self-baking electrode. When subjected to downward pressure, the wedge-shaped clamping pads can clamp the self-baking electrode.

[0021] The insertion structure includes a wedge-shaped pressure block, which, when subjected to pressure, can push the conductive fins into the electrode slot;

[0022] It also includes a force-applying frame, which is used to simultaneously apply pressure to the wedge-shaped bearing and the wedge-shaped pressure block. The wedge-shaped bearing and the wedge-shaped pressure block have different inclinations, so that when the force-applying frame applies a pressure, the displacement of the wedge-shaped bearing and the wedge-shaped pressure block is different.

[0023] Furthermore, the upper inner side of the force-applying frame is provided with an upper pressure slope, the slope of which is the same as that of the wedge-shaped bearing.

[0024] The lower end of the force-applying frame is equipped with a downward pressure slope, the slope of which is adapted to the wedge-shaped pressure block.

[0025] Furthermore, a slider is fixedly provided on the lower surface of the wedge-shaped pressure block, and a groove adapted to the slider is provided at the lower end of the gripper housing;

[0026] The lower periphery of the gripper housing, opposite to the slider, is provided with a radiating cylinder that radiates outwards, and a spring fixed to the slider is provided inside the radiating cylinder.

[0027] Furthermore, it also includes a lifting boom, which is located on one side of the electric arc furnace body. A support is provided on the upper side of the lifting boom, and the first holder is supported on the support.

[0028] Furthermore, it also includes a second gripper, on which a downward hydraulic cylinder for driving the second gripper to rise and fall is mounted.

[0029] The present invention has the following beneficial effects:

[0030] (1) The self-baking electrode in this low-energy-consumption submerged arc furnace for producing silicon-manganese alloy extends the electrode length by sintering electrode paste inside the electrode shell, ensuring the stability of the electrode during long-term use. The uniformly opened die holes on the electrode shell cooperate with the grooving die head to form multiple electrode slots on the periphery of the electrode paste, allowing conductive fins to be inserted into the electrode slots to achieve internal power supply to the self-baking electrode. Compared with the traditional external power supply method, this greatly improves the efficiency and uniformity of current supply, reduces resistance loss, and thus reduces energy consumption. Moreover, compared with the welded conductive fins in the prior art, the conductive fins in this invention can be reused, significantly extending the replacement cycle of conductive fins and saving costs. In addition, since the conductive fins are not lowered into the furnace along with the self-baking electrode, there is no need to set large holes on the furnace cover, greatly reducing the amount of sparks sprayed out of the furnace.

[0031] (2) The first holder in the low-energy-consumption submerged arc furnace for producing silicon-manganese alloy integrates the functions of clamping the self-baking electrode and conducting electricity. Its internal clamping components and insertion structure work together to ensure the stability of the self-baking electrode and the effective transmission of current. When the self-baking electrode needs to be lowered relative to the first holder after self-growth, the second holder can lower it to the required distance, so that the insertion structure inserts the conductive fins into the electrode slot. The integrated design makes the entire process of self-baking electrode growth, lowering and insertion of conductive fins a single unit, reducing errors caused by human operation.

[0032] (3) In the low-energy-consumption submerged arc furnace for producing silicon-manganese alloy, the arc-shaped conductor added in Example 3 can conduct electricity in coordination with the conductive fins, realize synchronous power supply inside and outside the self-baking electrode, further expand the contact area and reduce the resistance.

[0033] Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0034] Figure 1 This is an overall diagram of the present invention;

[0035] Figure 2 This is a diagram showing the clamping state of the self-baking electrode of the present invention;

[0036] Figure 3 This is a schematic diagram of the electrode shell of the present invention;

[0037] Figure 4 This is a state diagram of a single self-baking electrode located within the first and second holders in Embodiment 1 of the present invention;

[0038] Figure 5 This is a schematic diagram of the internal structure of the first gripper in Embodiment 1 of the present invention;

[0039] Figure 6 This is a schematic diagram of the installation of the conductive fins in Embodiment 1 of the present invention;

[0040] Figure 7 This is a schematic diagram of the addition of an arc-shaped conductor in Embodiment 1 of the present invention;

[0041] Figure 8 This is a diagram showing the extended state of the conductive fins in Embodiment 1 of the present invention;

[0042] Figure 9 This is a diagram showing the retracted state of the conductive fins in Embodiment 1 of the present invention;

[0043] Figure 10 For the present invention Figure 8 Enlarged view of area A;

[0044] Figure 11 For the present invention Figure 9 Enlarged view of area B;

[0045] Figure 12 This is a schematic diagram showing the position of the grooving die head of the present invention;

[0046] Figure 13 This is a schematic diagram of the first holder holding the self-baking electrode in Embodiment 2 of the present invention;

[0047] Figure 14 This is an exploded view of the first gripper in Embodiment 2 of the present invention;

[0048] Figure 15 This is a cross-sectional view of the first gripper in Embodiment 2 of the present invention;

[0049] Figure 16 For the present invention Figure 15 Enlarged view of area C;

[0050] Figure 17 This is a cross-sectional view of the force-applying frame in Embodiment 2 of the present invention.

[0051] In the diagram, 1. Submersible furnace body; 2. Lifting boom; 3. Support; 4. Top ring; 5. Pushing component; 6. First gripper; 61. Holder housing; 611. Assembly cavity; 612. Radiant tube; 62. Clamping assembly; 621. Clamping tile; 622. Pressure arm; 623. Tile clamping hydraulic cylinder; 624. Wedge-shaped tile clamp; 625. Wedge-shaped pressure block; 63. Clamping block; 64. Insertion plate hydraulic cylinder; 65. Clamping drive component; 651. Side wedge block; 652. Spring seat; 653. Diaphragm spring. 655. Swing arm; 656. Central shaft; 657. Compensation hole; 66. Drive hydraulic cylinder II; 67. Force application frame; 671. Upper pressure slope; 672. Lower pressure slope; 68. Slider; 69. Spring; 7. Second gripper; 8. Conductive fin; 81. Conical seat; 9. Grooving die head; 10. Self-baking electrode; 101. Electrode shell; 102. Die hole; 11. Lower pressure hydraulic cylinder; 12. Connecting frame; 13. Arc-shaped conductor; 14. Trapezoidal hole; 15. Exhaust gas collection hood; 16. Conductive copper pipe II. Detailed Implementation

[0052] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0053] In the description of this invention, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inner", "around", etc., which indicate orientation or positional relationship, are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting this invention.

[0054] The following is based on Figures 1-17 This invention describes a low-energy-consumption submerged arc furnace for producing silicon-manganese alloys, as provided in an embodiment of the present invention.

[0055] Example 1, please refer to Figure 1 This invention provides a technical solution: a low-energy-consumption submerged arc furnace for producing ferrosilicon alloy, comprising a submerged arc furnace body 1, a waste gas collection hood 15, and a self-baking electrode 10. The waste gas collection hood 15 is used to collect the waste gas generated by the reaction. An inspection door should also be provided on the submerged arc furnace body 1. One end of the self-baking electrode 10 is inserted into the submerged arc furnace body 1, and the other end is exposed above the submerged arc furnace body 1. The high-temperature electric arc generated by the self-baking electrode 10 and the reduction effect of coke reduce the manganese and silicon elements in manganese ore and silica in a high-temperature reducing atmosphere, ultimately forming a ferrosilicon alloy.

[0056] The self-baking method of the self-baking electrode 10 is self-growth. An electrode shell 101 is welded to the upper end of the self-baking electrode 10. In the prior art, the electrode paste (graphite body) is loaded into the electrode shell 101. When the self-baking electrode 10 heats up, the electrode paste is directly sintered into the electrode shell 101. The electrode paste is sintered in the electrode shell 101 to continuously extend the length of the self-baking electrode 10. The function of the electrode shell 101 is to ensure that the electrode paste remains cylindrical during the sintering process and avoids scattering. After the electrode shell 101 is sintered, it will slowly oxidize at high temperature (Fe→FeO) and eventually be completely consumed (especially the part inserted into the furnace).

[0057] Combination Figures 2-4 As shown, in this embodiment of the invention, mold holes 102 are uniformly opened on the side wall of the electrode shell 101, and a grooving mold head 9 is also provided. The grooving mold head 9 is located on the periphery of the electrode shell 101 (it is not assembled on the electrode shell 101; a top ring 4 is provided on the support 3 of the holder, and the grooving mold head 9 is located on the top ring 4). The grooving mold head 9 is opposite to the mold holes 102. The pushing component 5 can push the grooving mold head 9 along the electrode shell 101. The grooving mold head 9 can be inserted into the electrode paste, so that after the electrode paste is sintered, multiple electrode slots are formed along its circumference. The electrode slots allow the conductive fins 8 mentioned below to be inserted, thereby providing current to the self-baking electrode 10 in the form of internal power supply.

[0058] It should be noted that the die hole 102 was opened before the electrode shell 101 was welded to the upper end of the self-baking electrode 10.

[0059] In addition, the groove forming die head 9 mentioned here is preferably a table-shaped structure, with the insertion end being the smaller end and the end near the pushing component 5 being the larger end. It has a tapered design, a draft angle of 1°-2°, and a diameter that is 5% smaller than the target electrode slot with a pre-set shrinkage allowance.

[0060] Preferably, the grooving die 9 is made of hydrostatically pressed graphite, which is resistant to high temperature and has low adhesion. The surface of the grooving die 9 is coated with boron nitride (BN) release agent to prevent carbon-carbon adhesion. The grooving die 9 is only used as a temporary grooving mold and is pulled out when the electrode paste is in a semi-sintered state (400-600℃). At this time, the electrode paste has a certain strength but is not completely carbonized, which can maintain the shape of the electrode slot.

[0061] Preferably, the groove forming die 9 has a pre-filling depth of 50-80mm in the electrode paste, and the static pressure graphite material can withstand a semi-sintering temperature of 400℃-600℃ and avoids sticking to the electrode paste; the size of the die hole 102 matches the groove forming die 9, and the hole diameter is 0.5-1mm larger than the groove forming die 9 to facilitate insertion.

[0062] In this embodiment, eight mold holes 102 are evenly opened around the electrode shell 101.

[0063] Furthermore, the pushing component 5 is preferably a hydraulic cylinder, with a hydraulic cylinder provided around the top ring 4 opposite to the grooving die head 9 to control the insertion and removal of the grooving die head 9.

[0064] The conductive fins 8 are directly mounted on the first holder 6. The first holder 6 includes a holder housing 61. A clamping component 62 is provided on the upper part of the holder housing 61. The clamping component 62 can clamp the self-baking electrode 10 to prevent the self-baking electrode 10 from falling downwards due to its own weight. An assembly cavity 611 is provided in the area below the side wall of the holder housing 61 that is perpendicular to the mold hole 102. The conductive fins 8 are installed in the assembly cavity 611. Clamping blocks 63 are provided on both sides of the conductive fins 8. A first conductive copper tube is also connected to the clamping block 63 to conduct electricity, which is then conducted through the conductive fins 8. A second conductive copper tube 16 is provided in the assembly cavity 611. The second conductive copper tube 16 slides in contact with the first conductive copper tube. The second conductive copper tube 16 supplies power to the first conductive copper tube on one hand and guides the clamping block 63 on the other hand. The clamping block 63 is used to clamp the conductive fins 8 and provide the power supply current to the conductive fins 8. The first holder 6 is provided with an insertion structure for pushing the conductive fins 8 into the electrode slot.

[0065] It should be noted that the side wedge block 651, the swing arm 655, and the conical seat 81 are all made of non-conductive materials, such as boron nitride composite material and zirconium oxide toughened ceramic.

[0066] Therefore, the low-energy-consumption submerged arc furnace for producing silicon-manganese alloys provided in this embodiment of the invention extends the length of the self-baking electrode 10 by sintering electrode paste inside the electrode shell 101, ensuring the stability of the self-baking electrode 10 during long-term use. The uniformly spaced die holes 102 on the electrode shell 101 cooperate with the grooving die head 9 to form multiple electrode slots on the circumferential surface of the electrode paste, allowing the conductive fins 8 to be inserted into the electrode slots, thus providing internal power to the self-baking electrode 10. Compared to traditional external power supply methods, this significantly improves the efficiency and uniformity of current supply, reduces resistance loss, and thereby lowers energy consumption. Furthermore, compared to welded fins in the prior art, the conductive fins 8 in this invention can be reused, extending the replacement cycle and saving costs. Additionally, since the conductive fins 8 are not lowered into the furnace along with the self-baking electrode 10, there is no need to set large holes in the furnace cover, significantly reducing the amount of sparks ejected from the furnace.

[0067] Reference Figures 5-10As shown, the aforementioned clamping assembly 62 includes clamping tiles 621 and tile clamping hydraulic cylinders 623. The clamping tiles 621 are evenly arranged in an arc shape around the self-baking electrode 10. The tile clamping hydraulic cylinders 623 are located in the area opposite to the clamping tiles 621 on the periphery of the holder housing 61. A pressure arm 622 is fixed to the end of the piston rod of the tile clamping hydraulic cylinder 623. The pressure arm 622 is directly fixed to the clamping tiles 621. Furthermore, each tile clamping hydraulic cylinder 623 is located on the radial extension line of the self-baking electrode 10 and is used to control the clamping and loosening of the clamping tiles 621.

[0068] The insertion structure includes a plate-insertion hydraulic cylinder 64 located in the area surrounding the holder housing 61 opposite to the conductive fin 8. This structure is similar to the structure of the tile-pressing hydraulic cylinder 623 in the clamping assembly 62 described above, but its movable length is greater, and it is used to control the insertion or removal of the conductive fin 8 into the electrode slot.

[0069] Preferably, in order to improve the relative stability between the clamping block 63 and the conductive fin 8, a clamping drive 65 is also provided in the assembly cavity 611. The clamping drive 65 is used to control the clamping block 63 to clamp the conductive fin 8 when the insertion structure pushes the conductive fin 8 into the electrode slot.

[0070] It should be noted that the conductive fin 8 has a tapered structure with the end closer to the self-baking electrode 10 being the smaller end and the end closer to the clamping block 63 being the larger end. However, the end section that contacts the clamping block 63 is designed to be long and narrow (without tapering) to accommodate the clamping requirements of the clamping block 63.

[0071] Specifically, in order to achieve the purpose of clamping the conductive fin 8 by the clamping block 63, a conical seat 81 is provided at one end of the conductive fin 8 near the insert hydraulic cylinder 64; the clamping drive component 65 includes a side wedge block 651, which is located on both sides of the conical seat 81. A swing arm 655 is hinged to one end of the side wedge block 651 away from the spring seat 652. The middle part of the swing arm 655 is rotatably mounted in the assembly cavity 611 through the central shaft 656. The other end of the swing arm 655 is hinged to the clamping block 63. Compensation holes 657 are provided at both ends of the swing arm 655 to compensate for the position change of the hinge shaft at both ends of the swing arm 655 during the movement of the side wedge block 651.

[0072] Reference Figure 7 , Figure 10 and Figure 11 In this embodiment, when the insert hydraulic cylinder 64 pushes the conductive fin 8 into the electrode slot, the conical seat 81 moves along with it and gradually pushes the side wedge block 651, so that the side wedge block 651 pushes one end of the swing arm 655, and the other end of the swing arm 655 pushes the clamping block 63 to clamp the conductive fin 8.

[0073] Preferably, a diaphragm spring 653 is installed at the end of the side wedge block 651 away from the conical seat 81. The diaphragm spring 653 is used to provide the pressure for the side wedge block 651 to reset, so that the side wedge block 651 can reset when it loses the pressure of the conical seat 81. In addition, the diaphragm spring 653 is fixed to the side wall of the assembly cavity 611 by the spring seat 652.

[0074] Specifically, it also includes a lifting boom 2, which is located on one side of the submerged arc furnace body 1. A support 3 is provided on the upper side of the lifting boom 2. The support 3 is fixed to the upper flange of the lifting boom 2 by high-strength bolts. The lifting boom 2 is hydraulically driven. The first gripper 6 is supported on the support 3. It also includes a second gripper 7. The structure of the second gripper 7 is similar to that of the first gripper 6, but it includes the upper structure of the first gripper 6. It only has the function of clamping the self-baking electrode 10 and does not have the function of conducting electricity. A downward hydraulic cylinder 11 for driving the second gripper 7 to rise and fall is installed on the support 3. The second gripper 7 is installed on the connecting frame 12. The lower end of the piston rod of the downward hydraulic cylinder 11 is directly fixed to the connecting frame 12. When adjusting the height of the self-baking electrode 10 every day, the height of the entire support 3 can be adjusted by lifting the boom 2, thereby adjusting the height of the self-baking electrode 10.

[0075] When the overall length of the self-baking electrode 10 decreases after prolonged use, it needs to be lengthened. In this case, the equipment should be shut down and the following operations performed:

[0076] Step 1: Make a mold hole 102 on the periphery of the electrode shell 101 to be used, and weld the electrode shell 101 with the mold hole 102 to the upper end of the self-baking electrode 10.

[0077] Step 2: Apply a release agent to the surface of the grooving die head 9, and push the grooving die head 9 through the die hole 102 and insert it into the interior of the electrode shell 101 by the pushing component 5;

[0078] Step 3: When the machine is turned on, the electrode paste gradually sinters. The temperature sensor inside the top ring 4 monitors the temperature. When the temperature of the electrode paste reaches 400-600℃ (about 2-3 hours) and the surface is in a semi-cured state, the push component 5 is controlled to pull out the groove forming mold head 9, at which point the electrode slot is formed.

[0079] When it is necessary to lower the grown self-baking electrode 10 relative to the support 3, the following steps are required:

[0080] Step 1: Make the second gripper 7 hold the self-baking electrode 10 tightly, so that the self-baking electrode 10 is still in the clamped state;

[0081] Step 2: Control the release of the clamping component 62 in the first gripper 6, and control the conductive fins 8 to move radially and detach from the self-baking electrode 10;

[0082] Step 3: Control the downward hydraulic cylinder 11 to push the second holder 7 downwards the required distance. At this time, the self-baking electrode 10 is lowered. This distance is the vertical distance between the formed electrode slot and the conductive fin 8. Thus, the lowered electrode slot can be positioned opposite the conductive fin 8. At this time, control the clamping component 62 to clamp the self-baking electrode 10 again and control the conductive fin 8 to insert into the electrode slot. At this time, the clamping block 63 can clamp the conductive fin 8. The conductive fin 8 can also press the arc-shaped conductor 13 onto the self-baking electrode 10. Then control the second holder 7 to release the self-baking electrode 10 and retract the second holder 7 to reset. Its reset height is equal to its descent height.

[0083] Example 2, refer to Figures 13-17 As shown, the difference between this embodiment and Embodiment 1 lies in the insertion method of the clamping component 62 and the conductive fin 8. The rest are the same. The clamping component 62 includes a wedge-shaped clamping pad 624, which is evenly arranged in an arc shape around the self-baking electrode 10 and installed inside the holder housing 61. The wedge-shaped clamping pad 624 can clamp the self-baking electrode 10 under downward pressure. The insertion structure includes a wedge-shaped pressure block 625, which can push the conductive fin 8 into the electrode slot under pressure. It also includes a force-applying frame 67, which is used to apply pressure to the wedge-shaped clamping pad 624 and the wedge-shaped pressure block 625 at the same time. The inclination of the wedge-shaped clamping pad 624 and the wedge-shaped pressure block 625 is different, so that when the force-applying frame 67 applies a pressure, the displacement of the wedge-shaped clamping pad 624 and the wedge-shaped pressure block 625 is different.

[0084] Preferably, a second hydraulic cylinder 66 for controlling the raising or lowering of the force application frame 67 is provided above the holder housing 61.

[0085] This allows for the simultaneous control of the wedge-shaped bearing 624 and the conductive fins 8 using a single hydraulic system.

[0086] The clamping method of the clamping block 63 in this embodiment is the same as that in Embodiment 1.

[0087] Specifically, the upper inner side of the force-applying frame 67 is provided with an upper pressure slope 671, the slope of which is the same as that of the wedge-shaped bearing 624; the lower end of the force-applying frame 67 is provided with a lower pressure slope 672, the slope of which is adapted to the wedge-shaped pressure block 625.

[0088] It should be noted that the slope of the wedge-shaped bearing 624 is relatively steep, while the slope of the wedge-shaped pressure block 625 is relatively gentle. Therefore, when the force frame 67 is pushed downward, the radial movement distance of the wedge-shaped bearing 624 is less than the radial movement distance of the wedge-shaped pressure block 625, so that the conductive fin 8 can be inserted into the electrode slot.

[0089] Preferably, a slider 68 is fixedly provided on the lower surface of the wedge-shaped pressure block 625, and a groove adapted to the slider 68 is provided at the lower end of the holder housing 61; a radiating cylinder 612 is provided in the area opposite to the slider 68 at the lower periphery of the holder housing 61, and a spring 69 fixedly connected to the slider 68 is provided inside the radiating cylinder 612. The spring 69 is a cylindrical compression spring with a preload of 5-10kN, which ensures that after the force applying frame 67 moves upward, the slider 68 drives the conductive fins 8 to reset and disengage from the electrode slot, which facilitates the reset of the conductive fins 8 during the upward movement of the force applying frame 67.

[0090] Example 3, refer to Figures 7-11 As shown, this embodiment is an additional technical solution to Embodiment 1 and Embodiment 2. In order to achieve synchronous internal and external energization of the self-baking electrode 10 and maximize the conductive contact area, an arc-shaped conductor 13 is also provided, referring to... Figure 7 The arc-shaped conductor 13 is fitted around the conductive fin 8, and the arc-shaped conductor 13 can press against the outer surface of the self-baking electrode 10 when the conductive fin 8 is inserted into the electrode slot.

[0091] The conductive fin 8 has a structure with one large end and one small end, with the small end being the end closest to the center of the self-baking electrode 10; a trapezoidal hole 14 is formed on the arc-shaped conductor 13 in the area opposite to the conductive fin 8 (e.g., Figure 11 As shown, when the conductive fin 8 is fully inserted into the electrode slot, the conductive fin 8 can press the arc-shaped conductor 13 against the outer surface of the self-baking electrode 10 by applying pressure to the trapezoidal hole 14, forming a state in which the self-baking electrode 10 is synchronously energized inside and outside. When the conductive fin 8 retracts, due to the wedge-shaped (inner surface of the trapezoidal hole 14) pre-tightening force between the conductive fin 8 and the arc-shaped conductor 13, the arc-shaped conductor 13 will no longer press against the self-baking electrode 10 and will pull the arc-shaped conductor 13 back a certain distance.

[0092] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0093] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A low-energy-consumption submerged arc furnace for producing silicon-manganese alloy, comprising a submerged arc furnace body (1), characterized in that, Also includes: The self-baking electrode (10) has one end inserted into the submerged arc furnace body (1) and the other end exposed above the submerged arc furnace body (1). An electrode shell (101) is welded to the upper end of the self-baking electrode (10). The side wall of the electrode shell (101) is uniformly provided with mold holes (102). The electrode paste is sintered in the electrode shell (101) to continuously extend the length of the self-baking electrode (10). The grooving die (9) is located around the electrode shell (101) and opposite to the die hole (102). The grooving die (9) is provided with a pushing component (5) around its periphery that can pass through and insert the grooving die (9) into the electrode shell (101), so that multiple electrode slots are formed along its periphery after the electrode paste is sintered. The first gripper (6) includes a gripper housing (61), a clamping assembly (62) is provided in the upper part of the gripper housing (61), an assembly cavity (611) is provided in the area below the side wall of the gripper housing (61) that is perpendicular to the mold hole (102), a conductive fin (8) is provided in the assembly cavity (611), and clamping blocks (63) are provided on both sides of the conductive fin (8). The first gripper (6) is provided with an insertion structure for pushing the conductive fin (8) into the electrode slot. The clamping assembly (62) includes clamping tiles (621), which are arranged in an arc shape and uniformly around the self-baking electrode (10). The clamping tiles (621) clamp the self-baking electrode (10) by hydraulic pressure. An arc-shaped conductor (13) is fitted around the conductive fin (8). The arc-shaped conductor (13) can press against the outer surface of the self-baking electrode (10) when the conductive fin (8) is inserted into the electrode slot. The insertion structure includes a plate hydraulic cylinder (64), which is located in the area opposite to the conductive fins (8) on the periphery of the holder housing (61) and is used to control the conductive fins (8) to be inserted into or removed from the electrode slot.

2. The low-energy-consumption submerged arc furnace for producing silicon-manganese alloy according to claim 1, characterized in that, The assembly cavity (611) is also provided with a clamping drive (65), which is used to control the clamping block (63) to clamp the conductive fin (8) when the insertion structure pushes the conductive fin (8) into the groove structure. The conductive fin (8) has a conical seat (81) at one end near the insert hydraulic cylinder (64); The clamping drive (65) includes: Side wedge block (651) is located on both sides of the conical seat (81). The side wedge block (651) is hinged to a swing arm (655) at one end away from the spring seat (652). The middle part of the swing arm (655) is rotatably mounted in the assembly cavity (611) via the central shaft (656). The other end of the swing arm (655) is hinged to the clamping block (63).

3. The low-energy-consumption submerged arc furnace for producing silicon-manganese alloy according to claim 2, characterized in that, A diaphragm spring (653) is installed at the end of the side wedge block (651) away from the conical seat (81), and the diaphragm spring (653) is fixed to the side wall of the assembly cavity (611) by the spring seat (652).

4. The low-energy-consumption submerged arc furnace for producing silicon-manganese alloy according to claim 1, characterized in that: The conductive fin (8) has a structure with one large end and one small end, with the small end being the end closest to the center of the self-baking electrode (10). The arc-shaped conductor (13) has trapezoidal holes (14) in opposite areas. After the conductive fins (8) are fully inserted into the electrode slot, the conductive fins (8) can press the arc-shaped conductor (13) onto the outer surface of the self-baking electrode (10) by applying pressure to the trapezoidal holes (14).

5. A low-energy-consumption submerged arc furnace for producing silicon-manganese alloy according to claim 1, characterized in that, The clamping assembly (62) includes wedge-shaped clamping pads (624), which are evenly arranged in an arc shape around the self-baking electrode (10). When subjected to downward pressure, the wedge-shaped clamping pads (624) can clamp the self-baking electrode (10). The insertion structure includes a wedge-shaped pressure block (625), which, when subjected to pressure, can push the conductive fin (8) into the electrode slot. It also includes a force-applying frame (67) for simultaneously applying pressure to the wedge-shaped bearing (624) and the wedge-shaped pressure block (625). The wedge-shaped bearing (624) and the wedge-shaped pressure block (625) have different inclinations, so that when the force-applying frame (67) applies a pressure, the wedge-shaped bearing (624) and the wedge-shaped pressure block (625) have different displacements.

6. A low-energy-consumption submerged arc furnace for producing silicon-manganese alloy according to claim 5, characterized in that, The upper inner side of the force-applying frame (67) is provided with an upper pressure slope (671), and the slope of the upper pressure slope (671) is the same as that of the wedge-shaped tile (624). The lower end of the force-applying frame (67) is provided with a downward pressure slope (672), the slope of which is adapted to the wedge-shaped pressure block (625).

7. A low-energy-consumption submerged arc furnace for producing silicon-manganese alloy according to claim 6, characterized in that, The lower surface of the wedge-shaped pressure block (625) is fixed with a slider (68), and the lower end of the gripper housing (61) is provided with a groove that matches the slider (68). The lower periphery of the holder housing (61) opposite to the slider (68) is provided with a radiation cylinder (612) that radiates outward, and a spring (69) that is fixed to the slider (68) is provided inside the radiation cylinder (612).

8. A low-energy-consumption submerged arc furnace for producing silicon-manganese alloy according to any one of claims 1-7, characterized in that, It also includes a lifting boom (2), which is located on one side of the electric arc furnace body (1). A support (3) is provided on the upper side of the lifting boom (2), and the first gripper (6) is supported on the support (3).

9. A low-energy-consumption submerged arc furnace for producing silicon-manganese alloy according to claim 8, characterized in that, It also includes a second gripper (7), on which a downward hydraulic cylinder (11) for driving the second gripper (7) to rise and fall is mounted.

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