Electromagnetic-ultrasonic synergistic refining device and method for regenerating aluminum

Abstract

This invention discloses an electromagnetic-ultrasonic synergistic refining device and method for recycled aluminum, relating to the field of metal material processing and resource recycling technology. It includes a vacuum thermal devarnishing mechanism; a vacuum monitoring mechanism located at the top of the vacuum thermal devarnishing mechanism; an intelligent sealed feeding mechanism located at one end of the vacuum thermal devarnishing mechanism; and a circuit control mechanism located on one side of the intelligent sealed feeding mechanism. The key feature is that one end of the circuit control mechanism is connected to a composite electromagnetic ultrasonic melting mechanism, used to stir the melt using a traveling wave magnetic field mode to homogenize its temperature and composition, and to inject high-intensity ultrasonic waves into the melt in a pulse mode to initially break up solid particles and generate cavitation nuclei. This invention, through the setting of the composite electromagnetic ultrasonic melting mechanism, combines electromagnetic stirring with ultrasonic treatment to synergistically refine the melt, thereby effectively improving the quality of recycled aluminum products.

Description

Technical Field

[0001] This invention relates to the field of metal material processing and resource recycling technology, specifically to an electromagnetic-ultrasonic synergistic refining device and method for recycled aluminum. Background Technology

[0002] The recycling of recycled aluminum is a core pathway to achieving the "dual carbon" goal in the aluminum industry. However, recycled aluminum raw materials are complex, containing high levels of impurities such as Fe, Si, and Mn, as well as organic inclusions from oil stains and coatings. This leads to the formation of coarse needle-like or plate-like brittle intermetallic compounds such as β-Al5FeSi and Al15(Fe,Mn)3Si2 after remelting, accompanied by coarse primary α-Al grains and eutectic silicon phase. These harmful structures severely impair the mechanical properties (especially elongation and fatigue strength) and processing performance of the alloy, limiting high-quality recycled aluminum to the casting of low-end components and failing to meet the stringent material performance requirements of automotive structural parts and high-end profiles.

[0003] Currently, the industry mainly relies on two approaches to improve the quality of recycled aluminum: one is the chemical method, which involves adding large amounts of grain refiners and modifiers such as Al-Ti-B and Al-Sr to improve the quality of the melt and thus improve the quality of the recycled aluminum; the other is the physical method, which involves using conventional electromagnetic stirring or simple ultrasonic treatment to homogenize the melt or refine the microstructure, thereby improving the quality of recycled aluminum.

[0004] However, existing electromagnetic-ultrasonic co-refining devices and methods for recycled aluminum have the following shortcomings:

[0005] Existing methods for improving the quality of recycled aluminum are relatively limited. Traditional electromagnetic stirring is insufficient for directly breaking down microstructures, while traditional ultrasonic treatment suffers from rapid energy decay, small operating volume, and unstable treatment effects, making it difficult to apply to industrial melts of ton size or larger. Furthermore, it has limited ability to treat already formed coarse impurity phases, resulting in large fluctuations in the quality of recycled aluminum products and difficulty in achieving effective performance breakthroughs, thus failing to meet actual application requirements.

[0006] Therefore, we propose an electromagnetic-ultrasonic co-refining device and method for recycled aluminum to solve the problems mentioned above. Summary of the Invention

[0007] The purpose of this invention is to provide an electromagnetic-ultrasonic synergistic refining device and method for recycled aluminum. By setting up a composite electromagnetic-ultrasonic melting mechanism, electromagnetic stirring and ultrasonic treatment are combined to synergistically refine the melt, thereby effectively improving the quality of recycled aluminum products and solving the problems mentioned in the background art.

[0008] To achieve the above objectives, the present invention provides the following technical solution: an electromagnetic-ultrasonic synergistic refining device and method for recycled aluminum, including a vacuum thermal devarnishing mechanism;

[0009] A vacuum monitoring mechanism is installed on top of the vacuum thermal devarnishing mechanism;

[0010] An intelligent closed feeding mechanism is located at one end of the vacuum thermal devarnishing mechanism;

[0011] The line control mechanism is located on one side of the intelligent enclosed feeding mechanism;

[0012] The features are as follows: one end of the circuit control mechanism is connected to a composite electromagnetic ultrasonic melting mechanism, which is used to stir the melt in a traveling wave magnetic field mode to homogenize its temperature and composition, and inject high-intensity ultrasonic waves into the melt in a pulse mode to initially break up solid particles and generate cavitation nuclei. The top of the composite electromagnetic ultrasonic melting mechanism is provided with an electromagnetic rotary refining mechanism, which is used to rotate at high speed and inject refining gas to perform high-intensity vortex refining on the melt. One side of the composite electromagnetic ultrasonic melting mechanism is provided with a heat preservation conveying mechanism, one end of which is connected to a micro-cooling electromagnetic pouring head, which is used to guide the melt to solidify sequentially using a directional static magnetic field and micro-cooling water cooling. The outside of the electromagnetic rotary refining mechanism is connected to an intelligent control mechanism.

[0013] Preferably, the composite electromagnetic ultrasonic melting mechanism includes a main melting furnace, a composite electromagnetic field generator is installed on the outside of the main melting furnace, a protective frame is installed on the outside of the composite electromagnetic field generator, a fixed ultrasonic unit is installed at the bottom of the main melting furnace, and a lifting and rotating ultrasonic unit is movably installed on the outside of the protective frame.

[0014] Preferably, the electromagnetic rotary refining mechanism includes a circular frame, which is installed above the main smelting furnace. A lifting cantilever is installed on the top of the circular frame, a connecting frame is installed on one side of the lifting cantilever, an electromagnetic rotator is installed at one end of the connecting frame, a protective bottom frame is connected to the bottom of the electromagnetic rotator, and a refining gas nozzle is installed at the bottom of the protective bottom frame.

[0015] Preferably, the heat preservation conveying mechanism includes a heat preservation transfer bag, and two melt flow channels are symmetrically installed on the outer side of the heat preservation transfer bag, with one end of each melt flow channel connected to a casting pipe.

[0016] Preferably, the vacuum thermal devarnishing mechanism includes a vacuum thermal devarnishing chamber, one end of which is provided with a feed port, the other end of which is provided with a discharge port, and a support frame is installed at the bottom of the vacuum thermal devarnishing chamber.

[0017] Preferably, the vacuum monitoring mechanism includes a management interface, which is installed on the top of the vacuum thermal devarnishing chamber. The top of the management interface is connected to a first connecting pipe, one end of which is connected to a control valve. The bottom of the control valve is connected to a second connecting pipe, and the top of the intelligent sealed feeding mechanism is connected to a third connecting pipe. One end of the second connecting pipe is connected to the third connecting pipe.

[0018] Preferably, the intelligent sealed feeding mechanism includes a feeding chamber, one side of which is connected to the discharge port, a sealing door is installed on the surface of the feeding chamber, and a base frame is installed at the bottom of the feeding chamber.

[0019] Preferably, the circuit control mechanism includes a first solenoid valve, which is installed on one side of the feeding chamber. One end of the first solenoid valve is connected to a main connection line, and one end of the main connection line is connected to two connecting wires. One end of a single connecting wire is connected to a second solenoid valve, which is installed on the outside of the protective bottom frame. One end of the other connecting wire is connected to a lifting and rotating ultrasonic unit.

[0020] Preferably, the intelligent control mechanism includes a central intelligent control system, a base is installed at the bottom of the central intelligent control system, a control panel is provided on the surface of the central intelligent control system, a first connecting wire is connected to the top of the central intelligent control system, one end of the first connecting wire is connected to the protective bottom frame, and a second connecting wire is connected to one side of the central intelligent control system, one end of the second connecting wire is connected to the micro-cooling electromagnetic casting head.

[0021] An electromagnetic-ultrasonic synergistic refining device and method for recycled aluminum includes the following steps:

[0022] Step 1: After being crushed, the recycled aluminum raw material is fed into the vacuum thermal devarnishing mechanism for heating. The organic coating is removed under an inert atmosphere. Then, it is transported by the intelligent closed feeding mechanism to the composite electromagnetic ultrasonic melting mechanism for melting. During this process, the vacuum monitoring mechanism monitors and adjusts the air pressure and vacuum environment in the vacuum thermal devarnishing mechanism and the intelligent closed feeding mechanism.

[0023] Step 2: The raw materials are melted and superheated to the specified temperature by the composite electromagnetic ultrasonic melting mechanism. Then, the electromagnetic rotary refining mechanism is immersed in the melt, its rotating magnetic field is started and refining gas is sprayed. After high-intensity vortex refining for a period of time, it is lifted up and then allowed to stand for slag removal.

[0024] Step 3: Activate the traveling wave magnetic field mode of the composite electromagnetic field generator to stir the melt and homogenize its temperature and composition.

[0025] Step 4: Maintain the traveling wave magnetic field, and simultaneously start the fixed ultrasonic unit and the lifting rotating ultrasonic unit to inject high-intensity ultrasonic waves into the melt in pulse mode, initially breaking up solid particles and generating cavitation nuclei.

[0026] Step 5: Using the integrated magnetoacoustic resonance coupling module within the intelligent control mechanism, the composite electromagnetic field generator is switched to high-frequency pulse mode, and its frequency is adjusted to match the oscillation frequency of the ultrasonic cavitation bubble for coordinated resonance processing.

[0027] Step Six: Transfer the refined melt into a heat-insulating transfer ladle and let it stand briefly. Then, pour it through the pouring pipeline with the help of a micro-cooling electromagnetic pouring head. During the pouring process, the intelligent control mechanism controls the micro-cooling electromagnetic pouring head to apply a directional weak magnetic field and micro-cooling, guiding the ingot to achieve sequential solidification.

[0028] Compared with the prior art, the beneficial effects of the present invention are:

[0029] 1. This invention sets up a composite electromagnetic ultrasonic melting mechanism, thereby combining electromagnetic stirring and ultrasonic treatment to synergistically refine the melt, thus effectively improving the quality of recycled aluminum and meeting practical application requirements.

[0030] 2. This invention, by setting up an electromagnetic rotary refining mechanism, utilizes a super-strong vortex to break the refining gas into micro-nano bubbles, thereby achieving deep dehydrogenation and slag removal from the melt, further reducing the residual impurities inside the melt, and improving the quality of recycled aluminum products.

[0031] 3. By setting up a heat-insulating conveying mechanism and a micro-cooling electromagnetic pouring head, this invention achieves micro-cooling and directional electromagnetic braking during the pouring and solidification stages, locking the fine-grained structure, suppressing segregation, ensuring the effectiveness of the preceding treatment methods, preventing abnormal changes in the melt during pouring and solidification, and ensuring the overall effectiveness and stability of the device. Attached Figure Description

[0032] Figure 1 This is a perspective view of the main structure of an electromagnetic-ultrasonic synergistic refining device and method for recycled aluminum according to the present invention.

[0033] Figure 2 This is a side-view perspective view of the electromagnetic-ultrasonic synergistic refining device and method for recycled aluminum according to the present invention.

[0034] Figure 3 This is an enlarged perspective view of the vacuum thermal devarnishing mechanism in an electromagnetic-ultrasonic synergistic refining device and method for recycled aluminum according to the present invention.

[0035] Figure 4 This is a magnified perspective view of a partial structure in an electromagnetic-ultrasonic synergistic refining device and method for recycled aluminum according to the present invention.

[0036] Figure 5 This is a magnified perspective view of a portion of the structure of an electromagnetic-ultrasonic synergistic refining device and method for recycled aluminum according to the present invention.

[0037] Figure 6 This is an enlarged perspective view of the electromagnetic rotary refining mechanism in an electromagnetic-ultrasonic synergistic refining device and method for recycled aluminum according to the present invention.

[0038] Figure 7 This is an enlarged perspective view of the composite electromagnetic ultrasonic melting mechanism in an electromagnetic-ultrasonic synergistic refining device and method for recycled aluminum according to the present invention.

[0039] Figure 8 The enlarged perspective view of the heat-insulating conveying mechanism is shown below, which is part of the electromagnetic-ultrasonic synergistic refining device and method for recycled aluminum according to the present invention.

[0040] Figure 9 This is an enlarged perspective view of the intelligent control mechanism in an electromagnetic-ultrasonic synergistic refining device and method for recycled aluminum according to the present invention.

[0041] In the diagram: 1. Vacuum thermal devarnishing mechanism; 101. Vacuum thermal devarnishing chamber; 102. Feed port; 103. Discharge port; 104. Support frame; 2. Vacuum monitoring mechanism; 201. Management interface; 202. First connecting pipe; 203. Control valve; 204. Second connecting pipe; 205. Third connecting pipe; 3. Intelligent sealed feeding mechanism; 301. Feeding chamber; 302. Sealed door; 303. Base frame; 4. Circuit control mechanism; 401. First solenoid valve; 402. Main connection line; 403. Connecting wire; 404. Second solenoid valve; 5. Composite electromagnetic ultrasonic melting mechanism; 501. Main melting furnace; 50 2. Composite electromagnetic field generator; 503. Protective frame; 504. Fixed ultrasonic unit; 505. Lifting rotating ultrasonic unit; 6. Electromagnetic rotating refining mechanism; 601. Circular frame; 602. Lifting cantilever; 603. Connecting frame; 604. Electromagnetic rotator; 605. Protective base frame; 606. Refining gas nozzle; 7. Insulated conveying mechanism; 701. Melt trough; 702. Insulated transfer bag; 703. Casting pipeline; 8. Micro-cooling electromagnetic casting head; 9. Intelligent control mechanism; 901. Central intelligent control system; 902. Base; 903. Control panel; 904. First connecting wire; 905. Second connecting wire. Detailed Implementation

[0042] 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 a part of the embodiments of the present invention, and not all of them. 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.

[0043] Please see the appendix Figure 1 - Appendix Figure 9 As shown, the present invention provides a technical solution: an electromagnetic-ultrasonic synergistic refining device and method for recycled aluminum, including a vacuum thermal devarnishing mechanism 1;

[0044] Vacuum monitoring mechanism 2 is installed on top of vacuum heat devarnishing mechanism 1;

[0045] The intelligent closed feeding mechanism 3 is located at one end of the vacuum thermal devarnishing mechanism 1;

[0046] The line control mechanism 4 is located on one side of the intelligent enclosed feeding mechanism 3;

[0047] Its features include: a composite electromagnetic ultrasonic melting mechanism 5 connected to one end of the circuit control mechanism 4, used to stir the melt using a traveling wave magnetic field mode to homogenize its temperature and composition, and to inject high-intensity ultrasonic waves into the melt in a pulse mode to initially break up solid particles and generate cavitation nuclei; an electromagnetic rotary refining mechanism 6 is provided on the top of the composite electromagnetic ultrasonic melting mechanism 5, used to rotate at high speed and inject refining gas to perform high-intensity vortex refining of the melt; a heat-insulating conveying mechanism 7 is provided on one side of the composite electromagnetic ultrasonic melting mechanism 5, one end of which is connected to a micro-cooling electromagnetic pouring head 8, used to guide the melt to solidify sequentially using a directional static magnetic field and micro-cooling water; and an intelligent control mechanism 9 is connected to the outside of the electromagnetic rotary refining mechanism 6, which controls the melting process through the composite electromagnetic ultrasonic melting mechanism 5 and the electromagnetic electromagnetic ultrasonic melting mechanism 6. The setup of the magnetic rotary refining mechanism 6, the heat-insulating conveying mechanism 7, and the micro-cooled electromagnetic pouring head 8 enables the precise execution of a three-stage synergistic processing procedure—electromagnetic pretreatment, ultrasonic energization, and magnetoacoustic resonance—by the composite electromagnetic ultrasonic melting mechanism 5. Through the dynamic coordination of the magnetic field and the sound field, a uniform nucleation environment is first created, then cavitation nuclei are introduced and stabilized, and finally, cavitation energy is maximized through resonance. This achieves simultaneous ultra-fine refining and uniform dispersion of the primary phase, eutectic phase, and impurity phase. The electromagnetic rotary refining mechanism 6 generates a super-strong vortex to break the refining gas into micro-nano bubbles, achieving deep dehydrogenation and slag removal, and improving melt quality. The heat-insulating conveying mechanism 7 and the micro-cooled electromagnetic pouring head 8 apply micro-cooling and directional electromagnetic braking during the pouring and solidification stages to lock in fine-grained structures and suppress segregation.

[0048] according to Figure 1 , Figure 2 , Figure 5 andFigure 7 As shown, the composite electromagnetic ultrasonic melting mechanism 5 includes a main melting furnace 501, a composite electromagnetic field generator 502 installed on the outside of the main melting furnace 501, a protective frame 503 installed on the outside of the composite electromagnetic field generator 502, a fixed ultrasonic unit 504 installed at the bottom of the main melting furnace 501, and a lifting and rotating ultrasonic unit 505 movably installed on the outside of the protective frame 503. By setting up the composite electromagnetic ultrasonic melting mechanism 5, electromagnetic stirring and ultrasonic treatment can be combined to perform synergistic refinement of the melt, thereby effectively improving the quality of recycled aluminum and meeting the actual use requirements.

[0049] according to Figure 1 , Figure 2 , Figure 5 and Figure 6 As shown, the electromagnetic rotary refining mechanism 6 includes a circular frame 601, which is installed above the main melting furnace 501. A lifting cantilever 602 is installed on the top of the circular frame 601, and a connecting frame 603 is installed on one side of the lifting cantilever 602. An electromagnetic rotator 604 is installed at one end of the connecting frame 603, and a protective bottom frame 605 is connected to the bottom of the electromagnetic rotator 604. A refining gas nozzle 606 is installed at the bottom of the protective bottom frame 605. Through the setting of the electromagnetic rotary refining mechanism 6, the refining gas can be broken into micro-nano bubbles by using a super-strong vortex, thereby achieving deep dehydrogenation and slag removal of the melt, further reducing the residual impurities inside the melt, and improving the quality of recycled aluminum products.

[0050] according to Figure 1 , Figure 2 and Figure 8 As shown, the heat preservation conveying mechanism 7 includes a heat preservation transfer pot 702. Two melt flow channels 701 are symmetrically installed on the outer side of the heat preservation transfer pot 702. One end of each melt flow channel 701 is connected to a pouring pipe 703. By setting up the heat preservation conveying mechanism 7 and cooperating with the micro-cooling electromagnetic pouring head 8, micro-cooling and directional electromagnetic braking can be applied during the pouring and solidification stages to lock the fine grain structure, suppress segregation, ensure the effect of the previous treatment, prevent the melt from changing during pouring and solidification, and ensure the overall effectiveness and stability of the device.

[0051] according to Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, the vacuum thermal devarnishing mechanism 1 includes a vacuum thermal devarnishing chamber 101. One end of the vacuum thermal devarnishing chamber 101 is provided with a feed port 102, and the other end of the vacuum thermal devarnishing chamber 101 is provided with a discharge port 103. A support frame 104 is installed at the bottom of the vacuum thermal devarnishing chamber 101. With the setting of the vacuum thermal devarnishing mechanism 1, the raw materials can be vacuum thermally devarnished, which is thorough and effective, and facilitates the subsequent processing of the raw materials.

[0052] according to Figure 1 , Figure 2 and Figure 4 As shown, the vacuum monitoring mechanism 2 includes a management interface 201, which is installed on the top of the vacuum thermal devarnishing chamber 101. The top of the management interface 201 is connected to a first connecting pipe 202, one end of which is connected to a control valve 203. The bottom of the control valve 203 is connected to a second connecting pipe 204. The top of the intelligent sealed feeding mechanism 3 is connected to a third connecting pipe 205, and one end of the second connecting pipe 204 is connected to the third connecting pipe 205. Through the setting of the vacuum monitoring mechanism 2, the vacuum environment and air pressure in the vacuum thermal devarnishing mechanism 1 and the intelligent sealed feeding mechanism 3 can be monitored and adjusted to ensure the stability and safety of their operation.

[0053] according to Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the intelligent closed feeding mechanism 3 includes a feeding chamber 301. One side of the feeding chamber 301 is connected to the discharge port 103. A sealing door 302 is installed on the surface of the feeding chamber 301, and a base frame 303 is installed at the bottom of the feeding chamber 301. With the setting of the intelligent closed feeding mechanism 3, the raw materials can be automatically weighed and transported to the feeding port according to the process rhythm of the composite electromagnetic ultrasonic melting mechanism 5, so as to ensure the overall continuity of the device during operation.

[0054] according to Figure 1 , Figure 2 and Figure 5 As shown, the circuit control mechanism 4 includes a first solenoid valve 401, which is installed on one side of the feeding chamber 301. One end of the first solenoid valve 401 is connected to a main connection line 402, and one end of the main connection line 402 is connected to two connecting wires 403. One end of a single connecting wire 403 is connected to a second solenoid valve 404, which is installed on the outside of the protective bottom frame 605. One end of the other connecting wire 403 is connected to the lifting rotary ultrasonic unit 505. Through the configuration of the circuit control mechanism 4, a stable power supply can be provided to the composite electromagnetic ultrasonic melting mechanism 5 and the electromagnetic rotary refining mechanism 6 according to the operating structure and overall process flow of the device, ensuring the stable operation of the device.

[0055] according to Figure 1 , Figure 2 and Figure 9 As shown, the intelligent control mechanism 9 includes a central intelligent control system 901. A base 902 is installed at the bottom of the central intelligent control system 901. A control panel 903 is provided on the surface of the central intelligent control system 901. A first connecting wire 904 is connected to the top of the central intelligent control system 901. One end of the first connecting wire 904 is connected to the protective bottom frame 605. A second connecting wire 905 is connected to one side of the central intelligent control system 901. One end of the second connecting wire 905 is connected to the micro-cooling electromagnetic pouring head 8. Through the setting of the intelligent control mechanism 9, the device can be precisely controlled to operate and process the raw materials in multiple processes. At the same time, the intelligent control mechanism 9 integrates a magnetoacoustic resonance coupling module, which can accurately control the composite electromagnetic field generator 502 to switch between multiple modes.

[0056] Working principle: First, connect multiple devices within the unit and connect the power supply to the relevant electrical equipment to provide a stable power supply and ensure the normal operation of the unit. Then, crush the recycled aluminum waste to facilitate subsequent processing.

[0057] In the raw material pretreatment and conveying stage, the crushed raw material is first fed into the vacuum pyrolysis devarnishing chamber 101 through the feed port 102. It is treated at 500°C and under nitrogen protection for 40 minutes to completely decompose the organic matter. After cooling, the raw material enters the feeding chamber 301 through the discharge port 103. The intelligent closed feeding mechanism 3 automatically weighs the raw material and conveys it to the feeding port according to the process rhythm of the composite electromagnetic ultrasonic melting mechanism 5. During this process, the control valve 203 monitors and controls the vacuum environment and air pressure inside the vacuum pyrolysis devarnishing chamber 101 and the feeding chamber 301 to ensure their normal operation.

[0058] In the smelting and deep purification stage, firstly, the raw materials put into the main smelting furnace 501 are melted and superheated to 740°C. Then, the lifting cantilever 602 drives the connecting frame 603, causing the relevant parts of the electromagnetic rotary refining mechanism 6 to descend and immerse in the melt. The permanent magnet array inside rotates at a speed of 1500 rpm, while the refining gas nozzle 606 sprays argon gas to perform high-intensity vortex refining on the melt for 15 minutes. After the refining is completed, the electromagnetic rotary refining mechanism 6 rises and resets as a whole, and the melt is left to stand for slag removal.

[0059] In the core collaborative processing stage, firstly, the composite electromagnetic field generator 502 starts the traveling wave magnetic field mode to stir the melt for 120 seconds, making the temperature field uniform within ±2℃. Then, while maintaining the traveling wave magnetic field, the fixed ultrasonic unit 504 and the lifting rotating ultrasonic unit 505 are started simultaneously to provide pulse mode for 180 seconds. Then, the magnetoacoustic resonance coupling module integrated in the central intelligent control system 901 is started. Based on the ultrasonic feedback signal, the electromagnetic field is switched to a 50Hz high-frequency pulse mode to perform a 60-second resonance burst process in coordination with the ultrasonic waves. During this period, the melt can be observed to exhibit unique orderly and violent disturbances.

[0060] In the intelligent casting and solidification stage, the processed melt is first transferred to the heat preservation transfer ladle 702. After standing in the heat preservation transfer ladle 702 for 5 minutes, it is poured into the micro-cooling electromagnetic casting head 8 through the heat preservation transfer ladle 702. The micro-cooling electromagnetic casting head 8 applies a directional static magnetic field of 0.015T and micro-cooling water cooling to guide the melt to solidify sequentially. The ingot completes the final solidification in the cooling channel.

[0061] By operating according to the above instructions, the electromagnetic-ultrasonic co-refining device for recycled aluminum can be used.

[0062] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An electromagnetic-ultrasonic co-refining device for recycled aluminum, comprising a vacuum thermal devarnishing mechanism (1); A vacuum monitoring mechanism (2) is installed on top of the vacuum heat devarnishing mechanism (1); An intelligent closed feeding mechanism (3) is provided at one end of the vacuum heat devarnishing mechanism (1); The line control mechanism (4) is located on one side of the intelligent closed feeding mechanism (3); Its features are: One end of the line control mechanism (4) is connected to a composite electromagnetic ultrasonic melting mechanism (5), which is used to stir the melt in the traveling wave magnetic field mode to make its temperature and composition uniform, and inject high-intensity ultrasonic waves into the melt in the pulse mode to initially break solid particles and generate cavitation nuclei. The top of the composite electromagnetic ultrasonic melting mechanism (5) is provided with an electromagnetic rotating refining mechanism (6), which is used to rotate at high speed and inject refining gas to perform high-intensity vortex refining on the melt. One side of the composite electromagnetic ultrasonic melting mechanism (5) is provided with a heat preservation conveying mechanism (7), and one end of the heat preservation conveying mechanism (7) is connected to a micro-cooling electromagnetic pouring head (8), which is used to guide the melt to solidify sequentially using a directional static magnetic field and micro-cooling water cooling. The outside of the electromagnetic rotating refining mechanism (6) is connected to an intelligent control mechanism (9).

2. The electromagnetic-ultrasonic synergistic refining device for recycled aluminum according to claim 1, characterized in that: The composite electromagnetic ultrasonic melting mechanism (5) includes a main melting furnace (501), a composite electromagnetic field generator (502) is installed on the outside of the main melting furnace (501), a protective frame (503) is installed on the outside of the composite electromagnetic field generator (502), a fixed ultrasonic unit (504) is installed at the bottom of the main melting furnace (501), and a lifting rotating ultrasonic unit (505) is movably installed on the outside of the protective frame (503).

3. The electromagnetic-ultrasonic synergistic refining device for recycled aluminum according to claim 2, characterized in that: The electromagnetic rotary refining mechanism (6) includes a circular frame (601) installed above the main smelting furnace (501). A lifting cantilever (602) is installed on the top of the circular frame (601). A connecting frame (603) is installed on one side of the lifting cantilever (602). An electromagnetic rotator (604) is installed at one end of the connecting frame (603). A protective bottom frame (605) is connected to the bottom of the electromagnetic rotator (604). A refining gas nozzle (606) is installed at the bottom of the protective bottom frame (605).

4. The electromagnetic-ultrasonic co-refining device for recycled aluminum according to claim 3, characterized in that: The heat preservation conveying mechanism (7) includes a heat preservation transfer bag (702), and two melt flow channels (701) are symmetrically installed on the outside of the heat preservation transfer bag (702). One end of each melt flow channel (701) is connected to a casting pipe (703).

5. The electromagnetic-ultrasonic synergistic refining device for recycled aluminum according to claim 4, characterized in that: The vacuum heat devarnishing mechanism (1) includes a vacuum heat devarnishing cavity (101), one end of which is provided with a feed port (102), the other end of which is provided with a discharge port (103), and a support frame (104) is installed at the bottom of the vacuum heat devarnishing cavity (101).

6. The electromagnetic-ultrasonic co-refining device for recycled aluminum according to claim 5, characterized in that: The vacuum monitoring mechanism (2) includes a management interface (201), which is installed on the top of the vacuum heat-extracting paint chamber (101). The top of the management interface (201) is connected to a first connecting pipe (202), one end of which is connected to a control valve (203). The bottom of the control valve (203) is connected to a second connecting pipe (204). The top of the intelligent sealed feeding mechanism (3) is connected to a third connecting pipe (205), and one end of the second connecting pipe (204) is connected to the third connecting pipe (205).

7. The electromagnetic-ultrasonic synergistic refining device for recycled aluminum according to claim 6, characterized in that: The intelligent sealed feeding mechanism (3) includes a feeding chamber (301), one side of which is connected to the discharge port (103), a sealed door (302) is installed on the surface of the feeding chamber (301), and a base frame (303) is installed at the bottom of the feeding chamber (301).

8. The electromagnetic-ultrasonic co-refining device for recycled aluminum according to claim 7, characterized in that: The line control mechanism (4) includes a first solenoid valve (401), which is installed on one side of the feeding chamber (301). One end of the first solenoid valve (401) is connected to a main line (402), and one end of the main line (402) is connected to two connecting wires (403). One end of a single connecting wire (403) is connected to a second solenoid valve (404), which is installed on the outside of the protective bottom frame (605). One end of the other connecting wire (403) is connected to the lifting rotating ultrasonic unit (505).

9. The electromagnetic-ultrasonic co-refining device for recycled aluminum according to claim 8, characterized in that: The intelligent control mechanism (9) includes a central intelligent control system (901), a base (902) is installed at the bottom of the central intelligent control system (901), a control panel (903) is provided on the surface of the central intelligent control system (901), a first connecting wire (904) is connected to the top of the central intelligent control system (901), one end of the first connecting wire (904) is connected to the protective bottom frame (605), and a second connecting wire (905) is connected to one side of the central intelligent control system (901), one end of the second connecting wire (905) is connected to the micro-cooling electromagnetic pouring head (8).

10. A method of using an electromagnetic-ultrasonic co-refining device for recycled aluminum, characterized in that: The electromagnetic-ultrasonic co-refining device for recycled aluminum as described in claim 9 includes the following steps: S1: After being crushed, the recycled aluminum raw material is fed into the vacuum thermal devarnishing mechanism (1) for heating. The organic coating is removed under an inert atmosphere. Then, it is transported by the intelligent closed feeding mechanism (3) to the composite electromagnetic ultrasonic melting mechanism (5) for melting. During this process, the vacuum monitoring mechanism (2) monitors and adjusts the air pressure and vacuum environment in the vacuum thermal devarnishing mechanism (1) and the intelligent closed feeding mechanism (3). S2: The composite electromagnetic ultrasonic melting mechanism (5) melts the raw materials after input and overheats them to the specified temperature. Then, the electromagnetic rotary refining mechanism (6) is adjusted to immerse the melt, start its rotating magnetic field and spray refining gas. After a period of high-intensity vortex refining, it rises and then performs static slag removal. S3: Start the traveling wave magnetic field mode of the composite electromagnetic field generator (502) to stir the melt and homogenize its temperature and composition; S4: Maintain the traveling wave magnetic field, and simultaneously start the fixed ultrasonic unit (504) and the lifting rotating ultrasonic unit (505) to inject high-intensity ultrasonic waves into the melt in pulse mode, initially breaking up solid particles and generating cavitation nuclei; S5: By using the magnetoacoustic resonance coupling module integrated in the intelligent control mechanism (9), the composite electromagnetic field generator (502) is switched to high-frequency pulse mode, and its frequency is adjusted to match the oscillation frequency of the ultrasonic cavitation bubble for coordinated resonance processing. S6: The refined melt is transferred into the heat preservation transfer pot (702) and allowed to stand for a short time. Then, it is poured through the pouring pipe (703) in conjunction with the micro-cooling electromagnetic pouring head (8). During the pouring process, the intelligent control mechanism (9) controls the micro-cooling electromagnetic pouring head (8) to apply a directional weak magnetic field and micro-cooling to guide the ingot to achieve sequential solidification.

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