Double regenerative smelting furnace

Abstract

The present application relates to the technical fields of metallurgical smelting, in particular to a double regenerative smelting furnace, which comprises a smelting furnace, the side wall of the smelting furnace is fixedly connected with two communication racks, the end of the communication rack away from the smelting furnace is fixedly connected with a regenerative pipe, the two regenerative pipes are fixedly connected with a storage rack, the two ends of the storage rack are fixedly connected with sealing rings, the sealing rings are fixedly connected with regenerative pipes, one side of the storage rack is fixedly connected with a storage box, the side of the storage box away from the storage rack is attached to the smelting furnace, the collection mechanism is arranged to collect impurities in real time during smelting, the impurities enter the slag discharge groove through the pipe flow groove, the smelting furnace does not need to be stopped for cleaning, the production continuity is improved, the manpower and time are saved, the production efficiency is improved, the lifting and communication structure are improved in cooperation, the smelted material flows smoothly and is heated uniformly between the smelting furnace and the regenerative pipe under the precise control of the driving mechanism, the smelting efficiency is improved, the plate structure effectively cleans the residual smelted material, and the waste is reduced.

Description

Technical Field

[0001] This invention relates to the field of metallurgical smelting equipment technology, particularly to a dual regenerative smelting furnace. Background Technology

[0002] Regenerative thermal smelting furnaces, as important smelting equipment in the metallurgical industry, effectively improve energy efficiency and reduce production costs by recovering and utilizing the heat from high-temperature flue gas through thermal storage technology. Their working principle is that during the smelting process, the high-temperature flue gas, upon exiting the furnace, first passes through a thermal storage device, transferring heat to the storage medium. When preheating of combustion air or other media entering the furnace is required, the cold air flows through the storage medium, absorbs heat, and then enters the furnace, thus achieving heat recycling.

[0003] However, existing regenerative melting furnaces have some shortcomings:

[0004] On the one hand, during the heat storage process in the heat storage tube, a certain amount of slag will be generated along with the flow of molten material. This slag is difficult to collect and discharge conveniently. Traditional treatment methods often require manual cleaning of the heat storage tube after the furnace stops running. This is not only cumbersome and consumes a lot of manpower and time, but may also affect the continuity of production.

[0005] On the other hand, the flow of molten material is inconvenient during the heating process. Due to the limitations of the internal structure and heating method of the furnace, the flow of molten material within the furnace is uneven, and some areas of molten material may not be fully heated, resulting in reduced smelting efficiency. Moreover, after smelting, a certain amount of molten material will remain inside the furnace, which is difficult to clean, not only wasting resources but also potentially affecting the quality of the next smelting. Summary of the Invention

[0006] In view of the existence of the above-mentioned prior art, the present invention is proposed.

[0007] Therefore, the object of the present invention is to provide a dual regenerative melting furnace.

[0008] To solve the above-mentioned technical problems, the present invention provides the following technical solution: A furnace is included, with two connecting frames fixedly connected to its side wall. A heat storage tube is fixedly connected to the end of each connecting frame away from the furnace. A storage rack is fixedly connected between the two heat storage tubes. Sealing rings are fixedly connected to both ends of the storage rack, and heat storage tubes are fixedly connected to the sealing rings. A storage box is fixedly connected to one side of the storage rack, and the side of the storage box away from the storage rack is in contact with the furnace. A connecting groove is provided inside the connecting frame, connecting the furnace and the heat storage tubes. A lifting mechanism for lifting the molten material is provided inside the heat storage tube. An mounting plate is provided above the storage box, and a driving mechanism for driving the lifting mechanism is provided on the upper surface of the mounting plate. A lifting plate is slidably connected inside the storage box, and a collection mechanism for collecting molten impurities is provided on the upper surface of the lifting plate.

[0009] In a preferred embodiment of the dual regenerative melting furnace of the present invention, the lifting mechanism includes a piston slidably connected inside the regenerative tube, a lifting rod fixedly connected to the upper end face of the piston, an external thread on the side wall of the lifting rod, and the lifting rod passing through the slidably connected regenerative tube.

[0010] In a preferred embodiment of the dual regenerative melting furnace of the present invention, the driving mechanism includes two driving motors fixedly connected to the upper surface of the mounting plate. The output shaft of the driving motor is fixedly connected through the mounting plate and rotatably. A driving gear is fixedly connected to the end of the output shaft of the driving motor. A rotating disk is rotatably connected to the lower surface of the mounting plate. A rotating gear is fixedly connected to the lower surface of the rotating disk. The rotating gear meshes with the driving gear. An internal thread is provided on the inner wall of the rotating gear, and the internal thread cooperates with the external thread.

[0011] As a preferred embodiment of the dual regenerative melting furnace of the present invention, the upper end face of the mounting plate is fixedly connected to two symmetrically arranged limiting tubes, the lifting rod is slidably connected through the limiting tubes, the side wall of the lifting rod is provided with multiple circumferentially arranged limiting grooves, the inner wall of the limiting tube is fixedly connected with multiple circumferentially arranged limiting blocks, and the limiting blocks are slidably connected in the limiting grooves.

[0012] As a preferred embodiment of the dual regenerative melting furnace of the present invention, the collecting mechanism includes a slag discharge trough opened on the upper end face of the storage rack, a pressure pipe is fixedly connected to the inner top of the storage rack, the pressure pipe is flush with the inner wall of the slag discharge trough, a plurality of flow grooves are opened on the lower end face of the pressure pipe, a corresponding groove is opened on the upper end face of the lifting plate, and the pressure pipe cooperates with the corresponding groove.

[0013] In a preferred embodiment of the dual regenerative melting furnace of the present invention, the upper end face of the lifting plate is slidably connected with a plurality of buffer rods, the lower end face of the plurality of buffer rods is fixedly connected with a sealing plate, the sealing plate is engaged with a corresponding groove, and the side wall of the buffer rod is sleeved with a connecting spring, the two ends of the connecting spring contacting and abutting the buffer rod and the lifting plate respectively.

[0014] In a preferred embodiment of the dual regenerative melting furnace of the present invention, both ends of the lifting plate are provided with fitting grooves, and the fitting grooves contact and abut against the piston.

[0015] In a preferred embodiment of the dual regenerative melting furnace of the present invention, the storage rack has two symmetrically arranged fixing rods fixedly connected to its inner bottom, the lifting plate is slidably connected to the side walls of the two fixing rods, the fixing rods penetrate the mounting plate, and the side walls of the fixing rods are threaded with multiple fixing nuts, which contact and abut against the mounting plate.

[0016] The beneficial effects of the dual regenerative melting furnace of the present invention are as follows:

[0017] 1. In view of the problem of slag collection and discharge during the heat storage of existing regenerative smelting furnaces, the collection mechanism of the present invention collects impurities in real time during smelting. The top pressure pipe in the storage rack cooperates with the corresponding groove of the lifting plate. The impurities enter the slag discharge trough through the pressure pipe flow groove, eliminating the need to stop the furnace for cleaning, improving production continuity, saving manpower and time, and improving production efficiency.

[0018] 2. To address the issues of inconvenient flow and residue in molten material during heating, this invention improves the process through the coordinated use of lifting and connecting structures. Under the precise control of the driving mechanism, the lifting mechanism ensures smooth flow and uniform heating of the molten material between the furnace and the heat storage tube, thereby improving smelting efficiency. After smelting, the lifting plate and other structures effectively clean up residual molten material, reducing waste and ensuring the quality of the next smelting. At the same time, the limiting and fixing structures ensure stable operation of components, improving equipment reliability and lifespan. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the main structure of a dual regenerative melting furnace.

[0021] Figure 2 This is a schematic diagram of the side structure of a dual regenerative melting furnace.

[0022] Figure 3 This is a schematic diagram of the internal structure of the storage rack in a dual regenerative melting furnace.

[0023] Figure 4 This is a schematic diagram of the sealing plate structure of a dual regenerative melting furnace.

[0024] Figure 5 This is a schematic diagram of the lifting rod structure of a dual regenerative melting furnace.

[0025] In the diagram: 1. Furnace; 2. Connecting frame; 3. Heat storage tube; 4. Connecting groove; 5. Storage rack; 6. Sealing ring; 7. Storage box; 8. Fixing rod; 9. Mounting plate; 10. Fixing nut; 11. Piston; 12. Lifting rod; 13. Rotating disk; 14. Rotating gear; 15. Drive motor; 16. Drive gear; 17. External thread; 18. Limiting groove; 19. Limiting tube; 20. Limiting block; 21. Slag discharge groove; 22. Pressure pipe; 23. Flow groove; 24. Lifting plate; 25. Fitting groove; 26. Corresponding groove; 27. Buffer rod; 28. Sealing plate; 29. ​​Connecting spring. Detailed Implementation

[0026] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0027] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0028] Reference Figures 1-5 This invention provides a dual regenerative melting furnace, comprising a furnace 1. Two connecting frames 2 are fixedly connected to the side wall of the furnace 1. A heat storage tube 3 is fixedly connected to the end of the connecting frame 2 away from the furnace 1. A storage rack 5 is fixedly connected between the two heat storage tubes 3. Sealing rings 6 are fixedly connected to both ends of the storage rack 5. The sealing rings 6 are fixedly connected to the heat storage tubes 3. A storage box 7 is fixedly connected to one side of the storage rack 5. The side of the storage box 7 away from the storage rack 5 is in contact with the furnace 1. A connecting groove 4 is provided in the connecting frame 2, which connects the furnace 1 and the heat storage tubes 3. A lifting mechanism for lifting the melt is provided in the heat storage tube 3. The lifting mechanism includes a piston 11 slidably connected in the heat storage tube 3. A lifting rod 12 is fixedly connected to the upper end face of the piston 11. An external thread 17 is provided on the side wall of the lifting rod 12. The lifting rod 12 passes through the heat storage tube 3.

[0029] A mounting plate 9 is provided above the storage box 7. Two symmetrically arranged limiting tubes 19 are fixedly connected to the upper end face of the mounting plate 9. The lifting rod 12 slides through and is connected to the limiting tube 19. Multiple circumferentially arranged limiting grooves 18 are opened on the side wall of the lifting rod 12. Multiple circumferentially arranged limiting blocks 20 are fixedly connected to the inner wall of the limiting tube 19. The limiting blocks 20 are slidably connected in the limiting grooves 18. Two symmetrically arranged fixing rods 8 are fixedly connected to the inner bottom of the storage rack 5. The lifting plate 24 is slidably connected to the side wall of the two fixing rods 8. The fixing rods 8 pass through the mounting plate 9. Multiple fixing nuts 10 are threadedly connected to the side wall of the fixing rods 8. The fixing nuts 10 contact and abut against the mounting plate 9.

[0030] The upper end face of the mounting plate 9 is provided with a drive mechanism for driving the lifting mechanism. The drive mechanism includes two drive motors 15 fixedly connected to the upper end face of the mounting plate 9. The output shaft of the drive motor 15 is fixedly connected through the mounting plate 9 and rotatably connected. A drive gear 16 is fixedly connected to the end of the output shaft of the drive motor 15. A rotating disk 13 is rotatably connected to the lower end face of the mounting plate 9. A rotating gear 14 is fixedly connected to the lower end face of the rotating disk 13. The rotating gear 14 meshes with the drive gear 16. The inner wall of the rotating gear 14 is provided with an internal thread, which is matched with the external thread 17.

[0031] A lifting plate 24 is slidably connected inside the storage box 7. Multiple buffer rods 27 are slidably connected through the upper end face of the lifting plate 24. A sealing plate 28 is fixedly connected to the lower end face of the multiple buffer rods 27. The sealing plate 28 cooperates with the corresponding groove 26. A connecting spring 29 is sleeved on the side wall of the buffer rod 27. The two ends of the connecting spring 29 contact and abut with the buffer rod 27 and the lifting plate 24 respectively. Both ends of the lifting plate 24 are provided with a fitting groove 25, which contacts and abuts with the piston 11.

[0032] The upper end face of the lifting plate 24 is provided with a collection mechanism for collecting molten impurities. The collection mechanism includes a slag discharge trough 21 opened on the upper end face of the storage rack 5. A pressure pipe 22 is fixedly connected to the inner top of the storage rack 5. The pressure pipe 22 is flush with the inner wall of the slag discharge trough 21. Multiple flow grooves 23 are opened on the lower end face of the pressure pipe 22. A corresponding groove 26 is opened on the upper end face of the lifting plate 24. The pressure pipe 22 cooperates with the corresponding groove 26.

[0033] Among them, piston 11 is a metal piston, and it is made of alloy material with a melting point much higher than that of the molten substance.

[0034] During use, the furnace 1 and connecting components are installed as follows: the connecting frame 2 is fixed to the side wall of the furnace 1 to ensure smooth communication between the connecting groove 4 and the inside of the furnace 1. The heat storage tube 3 is connected to the end of the connecting frame 2 away from the furnace 1 to ensure a firm connection and good sealing. The storage rack 5 is fixedly connected to both ends of the heat storage tube 3 through the sealing ring 6 so that the two heat storage tubes 3 are connected through the storage rack 5. The storage box 7 is fixed to one side of the storage rack 5 and its other side is attached to the furnace 1 to complete the installation of the furnace 1 and related connecting components.

[0035] When in use, the molten material in the furnace 1 can flow to the heat storage tubes 3 on both sides through the connecting groove 4 and the connecting frame 2. The piston 11 can open the connecting groove 4 during the upward movement. That is, when the piston 11 is at the bottom of the heat storage tube 3, the connecting groove 4 is closed and the molten material cannot flow into the heat storage tube 3.

[0036] Lifting mechanism installation: Install piston 11 inside heat storage tube 3 so that it can slide freely inside heat storage tube 3, fix lifting rod 12 on the upper end face of piston 11, and ensure that the external thread 17 of lifting rod 12 and the through hole of heat storage tube 3 are smoothly matched.

[0037] Drive mechanism installation: Fix the drive motor 15 to the upper end face of the mounting plate 9, so that the output shaft of the drive motor 15 passes vertically through the mounting plate 9, and fix the drive gear 16 to the end of the output shaft. Rotate the rotating disk 13 to the lower end face of the mounting plate 9, so that the rotating gear 14 on the lower end face of the rotating disk 13 meshes with the drive gear 16, and the internal thread of the rotating gear 14 is aligned and engaged with the external thread 17 of the lifting rod 12. Limiting structure installation: Fix the limiting tube 19 to the upper end face of the mounting plate 9, so that the lifting rod 12 can pass through the limiting tube 19, and ensure that the limiting block 20 on the inner wall of the limiting tube 19 slides and engages with the limiting groove 18 on the side wall of the lifting rod 12 to limit the radial movement of the lifting rod 12.

[0038] When in use, the drive motor 15 is started to drive the rotating disk 13 and the drive gear 16 to rotate. At this time, the internal thread of the inner wall of the drive gear 16 is connected to the external thread 17. Under the sliding limit of the limit block 20 on the inner wall of the limit tube 19 and the limit groove 18 on the side wall of the lifting rod 12, the lifting rod 12 moves upward and drives the piston 11 to move upward in the heat storage tube 3.

[0039] Collection mechanism installation: A slag discharge trough 21 is opened on the upper end face of the storage rack 5. The pressure pipe 22 is fixed to the top of the storage rack 5, so that the pressure pipe 22 is flush with the inner wall of the slag discharge trough 21 and the flow groove 23 on the lower end face is aligned with the slag discharge trough 21. A corresponding groove 26 is opened on the upper end face of the lifting plate 24 so that it can cooperate with the pressure pipe 22. Then, the buffer rod 27 is passed through the upper end face of the lifting plate 24. A sealing plate 28 is connected to the lower end of the buffer rod 27 so that it cooperates with the corresponding groove 26. The connecting spring 29 is sleeved on the side wall of the buffer rod 27, and its two ends are in contact with the buffer rod 27 and the lifting plate 24 respectively. Fitting grooves 25 are opened at both ends of the lifting plate 24 so that it can contact with the piston 11 to enhance the sealing performance.

[0040] When using it, first of all... Figure 3 As shown, the piston 11 cooperates with the fitting groove 25, which can drive the lifting plate 24 to move within the storage rack 5 and the storage box 7. At this time, the fixing rod 8 provides sliding guidance for the movement of the lifting plate 24, maintaining its stability. As the molten liquid level continues to rise, when the pressure pipe 22 comes into contact with the sealing plate 28, the pressure pipe 22 presses down on the sealing plate 28. Under the traction of the buffer rod 27 and the connecting spring 29, the sealing plate 28 separates from the lower end face of the lifting plate 24. At this time, the slag located below the lifting plate 24, i.e., at the top of the solute, flows through the corresponding groove 26 and multiple flow grooves 23 into the pressure pipe 22, and can be collected and cleaned through the slag discharge groove 21. At the same time, it can clean the storage rack 5. The molten material in the storage tank 7 is depressurized. During this process, the rotation direction of the drive motors 15 on both sides can be controlled to control the movement of the piston 11 in the up and down direction, which can drive the molten material to circulate in the heat storage tube 3, the storage rack 5 and the storage tank 7. The flow of the molten material can be maintained by heating through circulation, while maintaining the uniformity of heating of the molten material. After heating is completed, the pistons 11 on both sides drive the lifting plate 24 to move down at the same time. At this time, the molten material in the heat storage tube 3, the storage rack 5 and the storage tank 7 can be transported back to the furnace 1 through the connecting rack 2 and the connecting groove 4 to complete the preheating treatment of the molten material. The side walls of the heat storage tube 3 and the storage rack 5 are equipped with heating wires to preheat the molten material.

[0041] Fixed structure installation: Fix the fixing rod 8 to the bottom of the storage rack 5 so that the lifting plate 24 can be slidably connected to the side wall of the fixing rod 8. The fixing rod 8 passes through the mounting plate 9 and the fixing nut 10 is threaded to the side wall of the fixing rod 8. By adjusting the contact position between the fixing nut 10 and the mounting plate 9, the relative position of the mounting plate 9 and the lifting plate 24 is fixed.

[0042] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape, and proportions of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), installation arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of the invention. The order or sequence of any process or method steps may be changed or rearranged according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structurally equivalent but also equivalent in structure. Other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments without departing from the scope of the invention. Therefore, the present invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0043] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the best mode of carrying out the invention as currently considered, or those features that are not relevant to implementing the invention) may be omitted.

[0044] It should be understood that numerous specific implementation decisions can be made during the development of any practical implementation, such as in any engineering or design project. Such development efforts may be complex and time-consuming, but for those skilled in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.

[0045] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A dual regenerative melting furnace, characterized in that: The system includes a furnace (1), to which two connecting frames (2) are fixedly connected. A heat storage pipe (3) is fixedly connected to one end of the connecting frame (2) away from the furnace (1). A storage rack (5) is fixedly connected between the two heat storage pipes (3). A sealing ring (6) is fixedly connected to both ends of the storage rack (5). A heat storage pipe (3) is fixedly connected to the sealing ring (6). A storage box (7) is fixedly connected to one side of the storage rack (5). The storage box (7) is located on the side away from the storage rack (5). The furnace (1) is fitted together with the connecting frame (2), and a connecting groove (4) is provided in the connecting frame (2). The connecting groove (4) connects the furnace (1) and the heat storage tube (3). The heat storage tube (3) is provided with a lifting mechanism for lifting the melt. The storage box (7) is provided with an mounting plate (9) above it. The upper end of the mounting plate (9) is provided with a driving mechanism for driving the lifting mechanism. The storage box (7) is slidably connected with a lifting plate (24). The upper end of the lifting plate (24) is provided with a collection mechanism for collecting melt impurities.

2. The dual regenerative melting furnace as described in claim 1, characterized in that: The lifting mechanism includes a piston (11) that is slidably connected inside the heat storage tube (3). A lifting rod (12) is fixedly connected to the upper end face of the piston (11). The side wall of the lifting rod (12) is provided with an external thread (17). The lifting rod (12) passes through the slidably connected heat storage tube (3).

3. The dual regenerative melting furnace as described in claim 2, characterized in that: The driving mechanism includes two drive motors (15) fixedly connected to the upper end face of the mounting plate (9). The output shaft of the drive motor (15) is fixedly connected through the mounting plate (9). The end of the output shaft of the drive motor (15) is fixedly connected to a drive gear (16). The lower end face of the mounting plate (9) is rotatably connected to a rotating disk (13). The lower end face of the rotating disk (13) is fixedly connected to a rotating gear (14). The rotating gear (14) meshes with the drive gear (16). The inner wall of the rotating gear (14) is provided with an internal thread, which is engaged with an external thread (17).

4. The dual regenerative melting furnace as described in claim 3, characterized in that: The upper end face of the mounting plate (9) is fixedly connected to two symmetrically arranged limiting tubes (19). The lifting rod (12) passes through and slides through the limiting tubes (19). The side wall of the lifting rod (12) is provided with multiple circumferentially arranged limiting grooves (18). The inner wall of the limiting tube (19) is fixedly connected to multiple circumferentially arranged limiting blocks (20). The limiting blocks (20) are slidably connected in the limiting grooves (18).

5. The dual regenerative melting furnace as described in claim 4, characterized in that: The collection mechanism includes a slag discharge trough (21) opened on the upper surface of the storage rack (5). A pressure pipe (22) is fixedly connected to the inner top of the storage rack (5). The pressure pipe (22) is flush with the inner wall of the slag discharge trough (21). Multiple flow grooves (23) are opened on the lower surface of the pressure pipe (22). A corresponding groove (26) is opened on the upper surface of the lifting plate (24). The pressure pipe (22) cooperates with the corresponding groove (26).

6. The dual regenerative melting furnace as described in claim 5, characterized in that: The upper end face of the lifting plate (24) is slidably connected with a plurality of buffer rods (27), and the lower end face of the plurality of buffer rods (27) is fixedly connected with a sealing plate (28). The sealing plate (28) cooperates with the corresponding groove (26). The side wall of the buffer rod (27) is fitted with a connecting spring (29), and the two ends of the connecting spring (29) respectively contact and abut against the buffer rod (27) and the lifting plate (24).

7. The dual regenerative melting furnace as described in claim 6, characterized in that: Both ends of the lifting plate (24) are provided with fitting grooves (25), and the fitting grooves (25) are in contact with the piston (11).

8. The dual regenerative melting furnace as described in claim 7, characterized in that: The storage rack (5) has two symmetrically arranged fixing rods (8) fixedly connected to its inner bottom. The lifting plate (24) is slidably connected to the side wall of the two fixing rods (8). The fixing rods (8) pass through the mounting plate (9). The side wall of the fixing rods (8) is threaded with multiple fixing nuts (10). The fixing nuts (10) contact and abut against the mounting plate (9).

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