Regeneration aluminum alloy electric and gas dual energy melting furnace

Abstract

The utility model relates to metal melting furnace technical field discloses a kind of regenerative aluminium alloy electric, gas dual-energy melting furnace, including furnace body, solid material hearth, liquid material hearth and immersion heating chamber are sequentially arranged from left to right in furnace body, and the both ends of liquid material hearth are respectively communicated with solid material hearth and immersion heating chamber;Heating assembly, including gas energy heating part and electric energy heating part, gas energy heating part is set on solid material hearth, liquid material hearth, and heat preservation part is set on immersion heating chamber, and electric energy heating part is set on heat preservation part and is heated to the aluminium liquid that is inserted into immersion heating chamber;Circulating member, it is set on heat preservation part, and circulating member is used to deliver the aluminium liquid in liquid material hearth to immersion heating chamber.The utility model uses immersion liquid heater for large aluminium alloy melting furnace, solves the power required in the prior art of equipment, the heating element arranged is more, and the drawbacks of difficult to take into account heater system, provide a more optimal option for the area with electricity advantage.

Description

Technical Field

[0001] This utility model relates to the field of metal melting furnace technology, and in particular to a dual-energy electric and gas melting furnace for recycled aluminum alloys. Background Technology

[0002] Based on the dual-carbon requirements, recycled aluminum and aluminum products fall under the category of low-carbon aluminum, making them ideal materials for direct carbon reduction in the global aluminum industry. This achieves green production, reduces costs, and enables resource recycling. The production process involves pyrolyzing organic combustibles into combustible gases, followed by complete combustion. This clean process is smokeless, dust-free, and odorless (environmentally friendly). Currently, the traditional smelting furnaces widely used in the industry are highly polluting, energy-intensive, costly, and inefficient, resulting in significant metal loss, low metal recycling rates, and severe resource waste, failing to meet dual-carbon targets.

[0003] In the aluminum alloy smelting industry, natural gas is the commonly used energy source. This smelting method meets the current environmental and cost requirements of enterprises. However, in some regions, both domestically and internationally, there is a large supply of green or low-cost electricity. In such cases, using electricity extensively for aluminum alloy smelting would offer significant cost and carbon emission advantages.

[0004] Currently, there are three main types of equipment used for aluminum alloy smelting using electricity: first, resistance-reflective smelting furnaces; second, induction heating furnaces (including industrial frequency, medium frequency, and high frequency furnaces); and third, in small smelting furnaces (melting tens to hundreds of kilograms per hour), immersion liquid heaters (a type of resistance-type internal heating element for molten aluminum) are also used. Among these three heating methods, immersion liquid heaters have the highest energy efficiency. This is because all the heat generated is first transferred to the molten aluminum. The temperature inside the furnace is generated by radiation from the surface of the molten aluminum, so the furnace temperature is always lower than the molten aluminum temperature. Resistance radiation heating, on the other hand, uses high-temperature resistance elements to heat the furnace and the surface of the molten aluminum. The molten aluminum is primarily heated by radiation from the high-temperature furnace, so the furnace temperature is always much higher than the molten aluminum temperature (usually 200-300°C higher) to achieve melting of the aluminum alloy. Therefore, under the same furnace wall insulation conditions, immersion heaters have much less heat loss than resistance radiation heating. While induction heating also uses electromagnetic induction to generate current that heats the aluminum alloy internally, its induction power supply produces a large amount of heat, which is carried away by the cooling system, resulting in significant heat loss. Therefore, immersion liquid heaters offer greater energy-saving advantages.

[0005] However, to date, there is no precedent in the aluminum alloy smelting industry for using immersion liquid heaters to smelt large quantities of aluminum alloys. The main reasons are: (1) This equipment requires a large amount of electricity and too many densely packed heating elements, making it difficult to clean. (2) Before starting electric heating, a large amount of molten aluminum needs to be pre-stored in the molten pool, which requires another heating device, and it is difficult to manage the heater system while storing the molten aluminum. (3) Because the heat generated by the immersion liquid heater has a high surface power density, it is necessary to guide the heat to the melting working area in a timely manner, which is difficult to achieve using conventional methods.

[0006] Therefore, there is an urgent need for a dual-energy (electric and gas) melting furnace for recycled aluminum alloys to solve the above problems. Utility Model Content

[0007] The purpose of this invention is to provide a dual-energy (electric and gas) melting furnace for recycled aluminum alloys to solve the problems existing in the prior art.

[0008] To achieve the above objectives, this utility model provides the following solution: This utility model provides a dual-energy (electric and gas) melting furnace for recycled aluminum alloys, comprising:

[0009] The furnace body contains, from left to right, a solid material furnace chamber, a liquid material furnace chamber, and an immersion heating chamber. The two ends of the liquid material furnace chamber are respectively connected to the solid material furnace chamber and the immersion heating chamber.

[0010] The heating assembly includes a gas-powered heating element and an electric-powered heating element. The gas-powered heating element is disposed on the solid material furnace chamber and the liquid material furnace chamber. An insulation element is disposed on the immersion heating chamber. The electric-powered heating element is disposed on the insulation element and extends into the immersion heating chamber to heat the molten aluminum.

[0011] A circulation component is provided on the insulation component, and the circulation component is used to transport the molten aluminum in the liquid furnace to the immersion heating chamber.

[0012] According to the present invention, a dual-energy electric and gas melting furnace for recycled aluminum alloy is provided. The gas energy heating element includes multiple gas burners, which are respectively installed on the solid material furnace chamber and the liquid material furnace chamber. The gas burners are connected to external gas.

[0013] According to the present invention, a dual-energy electric and gas melting furnace for recycled aluminum alloy is provided, wherein the electric energy heating element includes multiple immersion liquid heaters, and the immersion liquid heaters are connected to an external power source.

[0014] According to the present invention, a dual-energy electric and gas melting furnace for recycled aluminum alloy is provided. The insulation component includes an insulation cover, which is installed on the furnace body via a lifting mechanism. The insulation cover is adapted to the top of the immersion heating chamber, and the immersion liquid heater is installed on the insulation cover.

[0015] According to the present invention, a dual-energy electric and gas melting furnace for recycled aluminum alloy is provided. The circulation component includes an aluminum liquid pump installed on the heat preservation cover. The input end of the aluminum liquid pump extends into the liquid material furnace chamber, and the output end of the aluminum liquid pump is connected to the immersion heating chamber.

[0016] According to the present invention, a dual-energy electric and gas melting furnace for recycled aluminum alloy is provided, wherein a low-level liquid discharge channel and a high-level liquid discharge channel are provided on the furnace body, and the low-level liquid discharge channel and the high-level liquid discharge channel are respectively connected to the immersion heating chamber.

[0017] According to the present invention, a dual-energy electric and gas melting furnace for recycled aluminum alloy is provided, wherein an airflow channel and a liquid flow channel are provided between the solid material furnace and the liquid material furnace. The flue gas in the solid material furnace is transported to the liquid material furnace through the airflow channel, and the molten aluminum in the solid material furnace is transported to the liquid material furnace through the liquid flow channel.

[0018] According to the present invention, a dual-energy electric and gas melting furnace for recycled aluminum alloy is provided, wherein a partition beam is provided between the liquid material furnace chamber and the immersion heating chamber.

[0019] According to the present invention, a dual-energy electric and gas melting furnace for recycled aluminum alloy is provided, wherein the flue gas in the solid material furnace is burned in the liquid material furnace, and the temperature in the liquid material furnace is 800℃-850℃.

[0020] According to the present invention, a dual-energy electric and gas melting furnace for recycled aluminum alloy is provided, wherein the lifting mechanism includes a cylinder fixedly connected to the furnace body, and the telescopic end of the cylinder is fixedly connected to the heat preservation cover.

[0021] Compared with the prior art, the present invention has the following advantages and technical effects:

[0022] This utility model provides a dual-energy (electric and gas) melting furnace for recycled aluminum alloys. Before continuous production, preheating is performed by raising the insulation components and using a mobile heating device to preheat the immersion heating chamber. Simultaneously, the gas-powered heating elements in both the solid and liquid furnaces are activated to preheat them. The gas-powered heating elements melt the aluminum alloy until the volume of molten aluminum alloy is sufficient to activate the heaters. The insulation components are then reset, the circulation system is activated, and then the electric heating elements are activated to control the aluminum molten temperature within the process range. Recycled aluminum scrap is added to the solid furnace, and the flame size of the gas-powered heating elements is adjusted so that all the flue gas generated from the recycled scrap is sent to the liquid furnace. The gas-powered heating elements in the liquid furnace are controlled to ensure complete combustion of the flue gas. Melting is carried out according to the automated aluminum-iron separation furnace operation process, continuously completing one cycle of recycled aluminum alloy melting. Once the conditions for discharging molten aluminum are met, the molten aluminum is discharged. This invention applies an immersion liquid heater to a large aluminum alloy melting furnace, solving the drawbacks of existing technologies where the equipment requires a large amount of electricity, has many heating elements, and is difficult to manage using conventional methods. This provides a better option for regions with electricity advantages. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0025] Figure 2 This is a schematic diagram of the aluminum liquid flow direction of this utility model;

[0026] The components include: 1. Solid material furnace chamber; 2. Liquid material furnace chamber; 3. Gas burner; 4. Immersion heating chamber; 5. Aluminum liquid pump; 6. Lifting mechanism; 7. Immersion liquid heater; 8. Insulation cover; 9. Low-level liquid discharge channel; 10. High-level liquid discharge channel. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0029] Reference Figures 1-2 This utility model provides a dual-energy (electric and gas) melting furnace for recycled aluminum alloys, comprising:

[0030] The furnace body contains, from left to right, a solid material furnace chamber 1, a liquid material furnace chamber 2, and an immersion heating chamber 4. The two ends of the liquid material furnace chamber 2 are connected to the solid material furnace chamber 1 and the immersion heating chamber 4, respectively.

[0031] The heating assembly includes a gas-powered heating element and an electric-powered heating element. The gas-powered heating element is installed on the solid material furnace chamber 1 and the liquid material furnace chamber 2. An insulation element is installed on the immersion heating chamber 4. The electric-powered heating element is installed on the insulation element and extends into the immersion heating chamber 4 to heat the molten aluminum.

[0032] The circulation component, installed on the insulation component, is used to transport the molten aluminum in the liquid furnace chamber 2 to the immersion heating chamber 4.

[0033] In one embodiment of this utility model, preheating is performed before continuous production. The insulation component is raised, and the immersion heating chamber 4 is preheated using a mobile heating device. Simultaneously, the gas-powered heating elements of the solid material furnace 1 and the liquid material furnace 2 are activated to preheat them. The aluminum alloy is melted using the gas-powered heating elements until the amount of molten aluminum alloy is sufficient to activate the heater. The insulation component is then reset, the circulation component is activated, and then the electric heating element is activated to control the temperature of the molten aluminum within the process range. Recycled aluminum waste is added to the solid material furnace 1, and the flame size of the gas-powered heating element is adjusted so that all the flue gas generated by the recycled waste is sent into the liquid material furnace 2. The gas-powered heating element of the liquid material furnace 2 is controlled to ensure that the flue gas is fully combusted in the furnace. The smelting is carried out according to the automated aluminum-iron separation furnace operation process, and one cycle of recycled aluminum alloy smelting is completed. Once the conditions for discharging molten aluminum are met, the molten aluminum is discharged.

[0034] As an optional implementation, the gas-powered heating element includes multiple gas burners 3, which are respectively installed on the solid material furnace chamber 1 and the liquid material furnace chamber 2, and the gas burners 3 are connected to external gas.

[0035] In one embodiment of this utility model, the solid material furnace 1 and the liquid material furnace 2 are respectively equipped with gas burners 3. The function of the gas burners 3 on the solid material furnace 1 is to heat the solid waste and send the waste gas into the liquid material furnace 2 for combustion. The gas burners 3 on the liquid material furnace 2 have two functions: first, before the electric heating is started, the gas burners 3 melt and store the aluminum liquid to realize the immersion heating of the heater; second, to burn the waste gas during the smelting process.

[0036] As an optional implementation, the electric heating element includes multiple immersion liquid heaters 7, which are connected to an external power source.

[0037] In one embodiment of this utility model, an immersion liquid heater 7 heats the molten aluminum.

[0038] As an optional implementation, the insulation component includes an insulation cover 8, which is installed on the furnace body via a lifting mechanism 6 and is adapted to the top of the immersion heating chamber 4. An immersion liquid heater 7 is installed on the insulation cover 8.

[0039] In one embodiment of this utility model, the immersion heating chamber insulation cover 8 is a supporting device for the immersion heating chamber 4 and the aluminum liquid pump 5, and also serves as an insulation device for the immersion heating chamber 4.

[0040] As an optional implementation, the circulation component includes an aluminum liquid pump 5 mounted on the insulation cover 8, with the input end of the aluminum liquid pump 5 extending into the liquid material furnace chamber 2 and the output end of the aluminum liquid pump 5 connected to the immersion heating chamber 4.

[0041] In one embodiment of this utility model, the aluminum liquid pump 5 draws aluminum liquid from the molten pool of the liquid furnace 2. The liquid flows through the immersion heating chamber 4, absorbs the heat generated by the immersion liquid heater 7, and then flows to the other end of the liquid furnace 2 to complete the convective heating of the aluminum liquid.

[0042] As an optional implementation, the furnace body is provided with a low-level liquid discharge channel 9 and a high-level liquid discharge channel 10, which are respectively connected to the immersion heating chamber 4.

[0043] In one embodiment of this utility model, the low-level drain trough 9 is used to drain the aluminum liquid when the furnace is shut down, and the high-level drain trough 10 is a drain trough during production.

[0044] As an optional implementation, an airflow channel and a liquid flow channel are provided between the solid furnace chamber 1 and the liquid furnace chamber 2. The flue gas in the solid furnace chamber 1 is transported to the liquid furnace chamber 2 through the airflow channel, and the molten aluminum in the solid furnace chamber 1 is transported to the liquid furnace chamber 2 through the liquid flow channel.

[0045] In one embodiment of this utility model, recycled aluminum waste is added to the solid material furnace 1, and the flame size of the gas burner 3 is adjusted so that all the flue gas generated by the recycled waste is sent into the liquid material furnace 2, where the flue gas is fully combusted.

[0046] As an optional implementation, a partition beam is provided between the liquid furnace chamber 2 and the immersion heating chamber 4.

[0047] In one embodiment of this utility model, there is a partition beam between the immersion heating chamber 4 and the liquid material furnace 2. The design principle of the partition beam height is that when the aluminum liquid level is at its lowest position during the smelting process, the furnace gas will not enter the immersion heating chamber 4.

[0048] As an optional implementation, the flue gas in the solid furnace 1 is burned in the liquid furnace 2, and the temperature in the liquid furnace 2 is 800℃-850℃.

[0049] In one embodiment of this utility model, the burner flame of the liquid material furnace 2 is controlled so that the flue gas is fully combusted in the furnace and the temperature of the liquid material furnace 2 is maintained between 800℃ and 850℃.

[0050] As an optional implementation, the lifting mechanism 6 includes a cylinder fixedly connected to the furnace body, and the telescopic end of the cylinder is fixedly connected to the heat preservation cover 8.

[0051] In one embodiment of this utility model, a cylinder is used to drive the heat preservation cover 8 to move vertically, thereby controlling its opening or closing.

[0052] This invention provides a dual-energy (electric and gas) melting furnace for recycled aluminum alloy. Before use, preheating is performed. Before continuous production, the insulation cover 8 is raised, and the immersion heating chamber 4 is preheated using a mobile heating device. Simultaneously, the gas-powered heating elements of the solid material furnace 1 and the liquid material furnace 2 are activated to preheat them. The aluminum alloy is melted using gas burners 3 until the amount of molten aluminum alloy is sufficient to start the heaters. The insulation cover 8 is then reset, the circulation system is activated, and the immersion liquid heater 7 is started. The temperature of the molten aluminum is controlled within the process range. Recycled aluminum scrap is added to the solid material furnace 1, and the flame size of the gas burners 3 is adjusted so that all the flue gas generated from the recycled scrap is sent to the liquid material furnace 2. The gas burners 3 in the liquid material furnace 2 are controlled to ensure complete combustion of the flue gas within the furnace. The smelting is carried out according to the operation process of the automated aluminum-iron separation furnace. During the operation, there will be a brief tilting action, each lasting no more than 10 minutes. During this time, one side of the immersion heating chamber 4 will be raised to a certain height, and the molten aluminum in the immersion heating chamber 4 will flow to the liquid material furnace 2. At this time, the immersion liquid heater 7 cannot be powered on. Therefore, the system is equipped with an automatic power-off function. That is, when the furnace is tilted, the filter pump 5 and the immersion liquid heater 7 will be automatically powered off. After completing one cycle of recycled aluminum alloy smelting, the molten aluminum is discharged from the high-level discharge channel 10 when the conditions for discharging the molten aluminum are met.

[0053] This utility model uses an immersion liquid heater 7 in a large aluminum alloy melting furnace. An immersion heating chamber 4 is set up separately on the melting furnace, and a filter pump 5 is used, which makes it possible to heat the aluminum liquid with high power. When the heat preservation cover 8 is raised, the power supply of the heating system and the filter pump 5 system is automatically cut off when the melting furnace is tilted.

[0054] The core of this invention is the use of an immersion liquid heater 7 in an aluminum alloy melting furnace. Its structural principle can be applied not only to recycled aluminum alloy melting furnaces but also to other aluminum alloy melting furnaces. Furthermore, it can be used for the smelting of other non-ferrous metals and alloys. Therefore, any industrial furnace design that adopts the structural principle of this invention is protected by this patent.

[0055] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0056] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A dual-energy (electric and gas) melting furnace for recycled aluminum alloys, characterized in that, include: The furnace body is provided with a solid material furnace chamber (1), a liquid material furnace chamber (2) and an immersion heating chamber (4) arranged from left to right. The two ends of the liquid material furnace chamber (2) are respectively connected to the solid material furnace chamber (1) and the immersion heating chamber (4). The heating assembly includes a gas-powered heating element and an electric-powered heating element. The gas-powered heating element is disposed on the solid furnace chamber (1) and the liquid furnace chamber (2). An insulation element is disposed on the immersion heating chamber (4). The electric-powered heating element is disposed on the insulation element and extends into the immersion heating chamber (4) to heat the molten aluminum. A circulation component is provided on the insulation component, and the circulation component is used to transport the molten aluminum in the liquid furnace (2) to the immersion heating chamber (4).

2. The electric and gas dual-energy melting furnace for recycled aluminum alloy according to claim 1, characterized in that: The gas energy heating element includes multiple gas burners (3), which are respectively installed on the solid material furnace (1) and the liquid material furnace (2), and the gas burners (3) are connected to external gas.

3. The electric and gas dual-energy melting furnace for recycled aluminum alloy according to claim 1, characterized in that: The electric energy heating element includes multiple immersion liquid heaters (7), which are connected to an external power source.

4. The electric and gas dual-energy melting furnace for recycled aluminum alloy according to claim 3, characterized in that: The insulation component includes an insulation cover (8), which is installed on the furnace body via a lifting mechanism (6) and is adapted to the top of the immersion heating chamber (4). The immersion liquid heater (7) is installed on the insulation cover (8).

5. The electric and gas dual-energy melting furnace for recycled aluminum alloy according to claim 4, characterized in that: The circulation component includes an aluminum liquid pump (5) installed on the heat preservation cover (8), the input end of the aluminum liquid pump (5) extends into the liquid material furnace (2), and the output end of the aluminum liquid pump (5) is connected to the immersion heating chamber (4).

6. The electric and gas dual-energy melting furnace for recycled aluminum alloy according to claim 1, characterized in that: The furnace body is provided with a low-level liquid discharge channel (9) and a high-level liquid discharge channel (10), which are respectively connected to the immersion heating chamber (4).

7. The electric and gas dual-energy melting furnace for recycled aluminum alloy according to claim 1, characterized in that: An airflow channel and a liquid flow channel are provided between the solid furnace (1) and the liquid furnace (2). The flue gas in the solid furnace (1) is transported to the liquid furnace (2) through the airflow channel, and the molten aluminum in the solid furnace (1) is transported to the liquid furnace (2) through the liquid flow channel.

8. The electric and gas dual-energy melting furnace for recycled aluminum alloy according to claim 1, characterized in that: A partition beam is provided between the liquid material furnace (2) and the immersion heating chamber (4).

9. The electric and gas dual-energy melting furnace for recycled aluminum alloy according to claim 7, characterized in that: The flue gas in the solid furnace (1) is burned in the liquid furnace (2), and the temperature in the liquid furnace (2) is 800℃-850℃.

10. The electric and gas dual-energy melting furnace for recycled aluminum alloy according to claim 4, characterized in that: The lifting mechanism (6) includes a cylinder fixedly connected to the furnace body, and the telescopic end of the cylinder is fixedly connected to the heat preservation cover (8).

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