Tank material aluminum alloy smelting system

Abstract

The utility model relates to the technical field of aluminum alloy recycling, and discloses a tank material aluminum alloy smelting system which comprises a double-chamber furnace, a smelting furnace and a standing furnace which are sequentially communicated through a launder, and the two ends of the launder are provided with blocking drill rods for controlling aluminum liquid in the double-chamber furnace, the smelting furnace and the standing furnace to flow in and out. The double-chamber furnace, the smelting furnace and the standing furnace are all provided with furnace doors. According to the scheme, the double-chamber furnace, the smelting furnace and the standing furnace which are communicated through the launder are arranged, so that aluminum wastes with different sizes can be classified and graded and then are respectively put into the heating chamber, the waste chamber and the smelting furnace of the double-chamber furnace to be smelted, the recovery and smelting capacity of the aluminum wastes with different sizes and thicknesses is improved, and the oxidation burn out rate of small-size and thin-sheet wastes is reduced; and the recycling efficiency of the aluminum alloy of the tank body material is effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of aluminum alloy recycling, in particular to an aluminum alloy smelting system for tank body materials. Background Art

[0002] Aluminum alloy can material (such as cans) is the most mature aluminum product in the current recycling system, and the average cycle of "can to can" recycling is only 2 months, that is, the recycled aluminum cans can be re-formed into products on the shelves within 60 days. However, due to the large number of sizes of aluminum alloy can material waste, different sizes of can materials are oxidized and burned during recycling and smelting, especially small-sized, thinner waste, oil-containing and coated waste, which leads to serious slag formation of aluminum alloy melt, and ultimately affects the can failure rate of the product.

[0003] At present, for the recycling of scrap aluminum from can materials, the existing smelting system is usually equipped with a smelting furnace and a static furnace, and smelting is carried out in two ways: one is to melt the recycled aluminum scrap together into molten aluminum, and make it into regenerated ingots or complex ingots by casting, and then put the regenerated ingots or complex ingots into the smelting furnace for smelting, and then refine it in the static furnace; the other is to melt the scrap into molten aluminum, pour the molten aluminum into the molten aluminum ladle and then transport it to the door of the smelting furnace, directly add furnace water into the smelting furnace, and refine it in the static furnace. However, the existing technology has the following technical problems: (1) The first method has a secondary melting and casting process, which consumes a lot of energy and consumables; (2) The second method has a distance requirement for the aluminum water manufacturer, which requires more aluminum water ladle use and transportation costs, and the aluminum water after transportation has a certain heat loss, thereby increasing the smelting energy consumption; (3) In the above two methods, small-sized waste, thin waste, oil-containing and coated waste have large oxidation and burning losses, and the melt slag is serious, making it difficult to ensure the purity of the melt, resulting in a low recycling rate of the final can body waste aluminum. Therefore, the cost investment of the existing smelting method is relatively large, and the utilization rate of waste at the same level is not high.

[0004] In view of this, developing a low-loss aluminum alloy smelting system for can body materials to ensure that different sizes and types of can body material scrap aluminum can be processed simultaneously not only effectively makes up for the shortcomings of the existing technology, but also has a very important significance for improving the recycling level of can body material aluminum alloy at the same level. Utility Model Content

[0005] The utility model aims to provide a can body aluminum alloy smelting system to solve the technical problem that the aluminum alloy recycling rate is low due to large oxidation and burning loss during the recycling and smelting of the can body aluminum alloy in the existing smelting method.

[0006] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a can material aluminum alloy smelting system, comprising a double-chamber furnace, a smelting furnace and a static furnace connected in sequence by a flow channel, and blocking rods are provided at both ends of the flow channel to control the inlet and outlet of aluminum liquid in the double-chamber furnace, the smelting furnace and the static furnace; the double-chamber furnace, the smelting furnace and the static furnace are all provided with furnace doors.

[0007] The principles and advantages of this solution are:

[0008] 1. Compared with the prior art, in which the aluminum alloy waste of can body materials (aluminum waste for short) is first melted into aluminum liquid and cast into ingots, and then transferred to a smelting furnace for smelting and a static furnace for refining, which results in greater oxidation and burning loss of the aluminum alloy of the can body materials, this scheme arranges a double-chamber furnace, a smelting furnace and a static furnace connected by a flow channel, so that aluminum waste of different sizes can be classified and graded and then respectively put into the double-chamber furnace and the smelting furnace for smelting, thereby improving the recycling and smelting capacity of aluminum waste of different sizes and thicknesses, reducing the oxidation and burning loss rate of small-sized and thin-sheet waste, and effectively improving the recycling efficiency of aluminum alloy of can body materials.

[0009] 2. This scheme effectively realizes the simultaneous smelting of different types of aluminum waste by setting up a double-chamber furnace, a smelting furnace and a static furnace connected by a flow channel. The aluminum liquid after the initial smelting can be directly flowed into the static furnace for refining, which is convenient for continuously processing aluminum waste into refined aluminum liquid, effectively improving the recycling efficiency of aluminum waste.

[0010] 3. Compared with the prior art, which requires more transportation costs and energy consumption for refining various aluminum wastes after preliminary melting and casting into ingots, the molten aluminum in this solution directly flows into a static furnace for refining after melting, which effectively reduces the energy consumption of aluminum liquid refining and reduces the recovery cost of aluminum alloy for can body materials.

[0011] Preferably, as an improvement, a partition wall is provided in the double-chamber furnace, which divides the double-chamber furnace into a heating chamber and a waste chamber, and a circulation channel is provided on the partition wall, and an electromagnetic pump is provided in the circulation channel; a flow channel is connected between the waste chamber and the smelting furnace.

[0012] Beneficial effects: This scheme adopts the above-mentioned settings to further adapt to the graded smelting of aluminum scraps of different sizes and thicknesses. The electromagnetic pump and circulation channel are set to facilitate the circulation and smelting of aluminum liquid in the heating chamber and the scrap chamber, and to use the heat of aluminum liquid in the heating chamber to melt the aluminum scrap put into the scrap chamber, reducing the chance of direct contact between aluminum scrap in the scrap chamber and open flames, and effectively reducing the oxidation and burning rate of aluminum scrap and smelting energy consumption.

[0013] Preferably, as an improvement, the circulation channel is located in the middle of the partition wall, and the height of the circulation channel is higher than the aluminum liquid level in the heating chamber and the waste chamber.

[0014] Beneficial effect: This scheme adopts the above-mentioned setting, which facilitates the circulation of aluminum liquid in the heating chamber and the waste chamber.

[0015] Preferably, as an improvement, the heating chamber, the smelting furnace and the static furnace are all provided with high-power burners, and the waste chamber is provided with a supplementary heat burner.

[0016] Beneficial effect: This scheme adopts the above arrangement, which is convenient for melting the aluminum alloy of the can body material put into the furnace. The waste chamber is provided with a heat supplement burner to supplement the melting energy when the aluminum liquid in the heating chamber is insufficient, thereby ensuring the melting effect.

[0017] Preferably, as an improvement, a first flow channel is connected between the waste chamber and the smelting furnace, and a second flow channel is connected between the smelting furnace and the static furnace.

[0018] Beneficial effects: This scheme adopts the above-mentioned setting, which facilitates the circulation and transfer of aluminum liquid between the double-chamber furnace, the melting furnace and the static furnace.

[0019] Preferably, as an improvement, the heating chamber is provided with a first furnace door, the waste chamber is provided with a second furnace door, the smelting furnace is provided with a third furnace door, and the static furnace is provided with a fourth furnace door.

[0020] Beneficial effect: This scheme adopts the above-mentioned setting, which is convenient for classifying and smelting different types of aluminum scraps, reducing the oxidation and burning loss of aluminum scraps, and obtaining high-quality refined aluminum liquid. Specifically, as a reference, the first furnace door can be used to feed large pieces of scrap aluminum or pure aluminum, the second furnace door is used to feed packaged blocks, recycled ingots, and twisted rolls of aluminum scraps, and the third furnace door is used to feed large pieces of heavy aluminum materials such as aluminum ingots and recycled ingots, while the first furnace door, the second furnace door, the third furnace door and the fourth furnace door can all be used for slagging during the smelting and / or refining process.

[0021] Preferably, as an improvement, a furnace bridge is provided in the waste chamber, the furnace bridge is arranged close to a side of the second furnace door, and the area of ​​the furnace bridge is smaller than the cross-sectional area of ​​the waste chamber.

[0022] Beneficial effect: This scheme adopts the above-mentioned setting, which is convenient for processing oily, watery and coated aluminum scrap. Specifically, the oily, watery and coated aluminum scrap can be placed on the furnace bridge in the scrap chamber for baking in advance, and then pushed into the scrap chamber for smelting after the combustibles are completely burned or evaporated, effectively improving the purity and quality of the aluminum liquid.

[0023] Preferably, as an improvement, the waste chamber is connected to a vortex well, a debris inlet is provided at the top of the vortex well, and an aluminum liquid channel connected to the first flow channel is provided at the bottom.

[0024] Beneficial effect: This scheme adopts the above-mentioned setting, which is convenient for utilizing the heat in the aluminum liquid to melt the scrap aluminum waste, and reduces the oxidation and burning loss of the scrap aluminum waste and the smelting energy consumption. Specifically, as a reference, the scrap aluminum waste is fed into the vortex well from the scrap inlet at the top of the vortex well, and the aluminum liquid in the waste chamber partially flows into the vortex well and mixes with the scrap aluminum waste. The scrap aluminum waste is melted by the heat in the aluminum liquid and then flows into the first flow channel along the aluminum liquid channel. In the process, no additional energy is required to melt the scrap aluminum waste, which effectively reduces the smelting energy consumption, and the oxidation and burning loss of the scrap aluminum waste can also be effectively avoided by utilizing the heat in the aluminum liquid to melt the scrap aluminum waste.

[0025] Preferably, as an improvement, a vortex channel is provided between the waste chamber and the vortex well, the vortex channel is tangent to the inner wall of the vortex well, and a circulation pump is provided on the vortex channel.

[0026] Beneficial effect: This scheme adopts the above-mentioned setting, and the aluminum liquid in the waste chamber enters the vortex well by closely adhering to the inner wall of the vortex well, effectively forming a vortex, which is convenient for dispersing and mixing the scrap aluminum waste fed into the vortex well, thereby improving the smelting effect of the scrap aluminum waste.

[0027] Preferably, as an improvement, a conveyor belt is provided outside the vortex well, and the conveyor belt outlet faces the debris inlet of the vortex well.

[0028] Beneficial effects: This scheme adopts the above-mentioned arrangement, which facilitates automatic and uniform feeding of materials into the vortex well, thereby achieving efficient smelting of scrap aluminum waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a schematic structural diagram of the aluminum alloy smelting system for tank material in Example 1 of the utility model.

[0030] Figure 2 This is a schematic structural diagram of the aluminum alloy smelting system for tank material in Example 2 of the utility model.

[0031] Figure 3 It is a top view of the connection between the vortex channel and the inner wall of the vortex well in Example 2 of the utility model. DETAILED DESCRIPTION

[0032] The present invention is further described in detail below in conjunction with the embodiments, but the embodiments of the present invention are not limited thereto. Description of the drawings: double-chamber furnace 1, heating chamber 11, first furnace door 111, waste chamber 12, second furnace door 121, furnace bridge 122, supplementary heat burner 123, partition wall 13, circulation channel 131, electromagnetic pump 14, first flow trough 2, smelting furnace 3, third furnace door 31, second flow trough 4, static furnace 5, fourth furnace door 51, burner 6, plugging braze 7, vortex well 8, vortex channel 81, circulation pump 811, debris inlet 82, aluminum liquid channel 83, third flow trough 9.

[0033] Example 1

[0034] This solution provides a tank material aluminum alloy smelting system, such as Figure 1 As shown, it includes a double-chamber furnace 1, a smelting furnace 3 and a static furnace 5 which are connected by flow channels in sequence. The flow channel between the double-chamber furnace 1 and the smelting furnace 3 is a first flow channel 2, which is convenient for the aluminum liquid in the double-chamber furnace 1 to enter the smelting furnace 3 through the first flow channel 2; the flow channel between the smelting furnace 3 and the static furnace 5 is a second flow channel 4, which is convenient for the aluminum liquid in the smelting furnace 3 to enter the smelting furnace 3 through the second flow channel 4. Both ends of the first flow channel 2 and the second flow channel 4 are provided with a plugging rod 7 for controlling the aluminum liquid in and out of the double-chamber furnace 1, the smelting furnace 3 and the static furnace 5.

[0035] A partition wall 13 is provided in the double-chamber furnace 1, which divides the double-chamber furnace 1 into a heating chamber 11 and a waste chamber 12. A circulation channel 131 is provided on the partition wall 13. The circulation channel 131 is located in the middle of the partition wall 13. The height of the circulation channel 131 is higher than the aluminum liquid level in the heating chamber 11 and the waste chamber 12. An electromagnetic pump 14 is provided in the circulation channel 131 to facilitate the circulation of aluminum liquid in the heating chamber 11 and the waste chamber 12.

[0036] The heating chamber 11 is provided with a first furnace door 111 and a high-power burner 6, the waste chamber 12 is provided with a second furnace door 121 and a supplementary heat burner 123, and a furnace bridge 122 is provided in the waste chamber 12. The furnace bridge 122 is arranged close to the second furnace door 121. The area of ​​the furnace bridge 122 is smaller than the cross-sectional area of ​​the waste chamber 12, which is convenient for processing oil-containing, water-containing and film-coated waste aluminum. Specifically, the oil-containing, water-containing and film-coated aluminum waste can be pre-placed on the furnace bridge 122 in the waste chamber 12 for baking, and then pushed into the waste chamber 12 for smelting after the combustibles are completely burned or evaporated, which effectively improves the purity and quality of the aluminum liquid. The first launder 2 is located between the waste chamber 12 and the smelting furnace 3.

[0037] The smelting furnace 3 is provided with a third furnace door 31 , the static furnace 5 is provided with a fourth furnace door 41 and a third flow channel 9 , and a plugging rod 7 is also provided on the end of the third flow channel 9 .

[0038] Specific implementation method:

[0039] In this embodiment, aluminum alloys of can materials of different sizes and thicknesses can be smelted in different categories. Specifically, large pieces of scrap aluminum or pure aluminum are put into the heating chamber 11 through the first furnace door 111, and the high-power burner 6 provided on the heating chamber 11 can melt it into aluminum liquid. The aluminum liquid in the heating chamber 11 is circulated and smelted in the heating chamber 11 and the waste chamber 12 under the action of the electromagnetic pump 14. The packaged blocks, regenerated ingots, and twisted rolls of aluminum waste are put into the waste chamber 12 through the second furnace door 121, and are heated and melted by the aluminum liquid circulating in the heating chamber 11. If the packaged blocks, regenerated ingots, and twisted rolls of aluminum waste contain oil, water, or film, they can be placed on the furnace bridge 122 for baking when feeding, and then pushed into the waste chamber 12 for smelting after the combustibles are completely burned or evaporated, which effectively improves the purity and quality of the aluminum liquid.

[0040] The aluminum liquid in the double-chamber furnace 1 enters the smelting furnace 3 through the first launder 2. At this time, large pieces of heavy aluminum materials such as aluminum ingots and recycled ingots are put into the smelting furnace 3 through the third furnace door 31, and are mixed with the aluminum liquid entering the smelting furnace 3 through the first launder 2 and then enter the static furnace 5 for refining through the second launder 4. In each smelting stage, the first furnace door 111, the second furnace door 121, the third furnace door 31 and the fourth furnace door 51 are used for slag removal to remove waste slag generated during the smelting process, improve the smelting quality, and improve the purity and quality of the aluminum liquid.

[0041] The aluminum liquid refined in the static furnace 5 flows out through the third flow channel 9 after being tested and found to be qualified. After online purification treatment, it can be directly used for casting aluminum alloy ingots, and can also be mixed with other melts to produce corresponding products as needed.

[0042] Example 2

[0043] In order to further improve the graded smelting effect of aluminum scrap, Figure 2 and Figure 3 As shown, the waste chamber 12 is also connected to the vortex well 8, and a vortex channel 81 is provided between the waste chamber 12 and the vortex well 8. The vortex channel 81 is tangent to the inner wall of the vortex well 8. A circulating pump 811 is provided on the vortex channel 81, which is convenient for pumping the high-temperature aluminum liquid in the waste chamber 12 to the vortex well 8 and forming a vortex, thereby realizing efficient mixing and smelting of the aluminum liquid and the scrap aluminum waste in the vortex. A scrap inlet 82 is provided at the top of the vortex well 8, and a conveyor belt (not shown in the figure) is provided outside the vortex well 8. The conveyor belt outlet is directly opposite to the scrap inlet 82 of the vortex well 8, which is convenient for the automatic feeding of scrap aluminum waste. An aluminum liquid channel 83 connected to the first flow trough 2 is provided at the bottom of the vortex well 8, which is convenient for the aluminum liquid in the vortex well 8 to enter the smelting furnace 3 through the first flow trough 2.

[0044] The above is only an embodiment of the utility model, and the common knowledge such as the known specific technical solutions and / or characteristics in the solution is not described in detail here. It should be pointed out that for those skilled in the art, without departing from the technical solution of the utility model, several deformations and improvements can be made, which should also be regarded as the protection scope of the utility model, and these will not affect the effect of the implementation of the utility model and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A can body aluminum alloy smelting system, characterized by: It includes a double-chamber furnace, a smelting furnace and a static furnace which are connected by a flow channel in sequence. Both ends of the flow channel are provided with plugging rods for controlling the inflow and outflow of aluminum liquid in the double-chamber furnace, the smelting furnace and the static furnace; the double-chamber furnace, the smelting furnace and the static furnace are all provided with furnace doors.

2. The aluminum alloy smelting system for can body materials according to claim 1, characterized in that: A partition wall is arranged in the double-chamber furnace, which divides the double-chamber furnace into a heating chamber and a waste chamber. A circulation channel is arranged on the partition wall, and an electromagnetic pump is arranged in the circulation channel. A flow channel is connected between the waste chamber and the smelting furnace.

3. A can body aluminum alloy smelting system according to claim 2, characterized in that: The circulation channel is located in the middle of the partition wall, and the height of the circulation channel is higher than the aluminum liquid level in the heating chamber and the waste chamber.

4. A can body aluminum alloy smelting system according to claim 2, characterized in that: The heating chamber, smelting furnace and static furnace are all provided with high-power burners, and the waste chamber is provided with a supplementary heat burner.

5. The aluminum alloy smelting system for can body materials according to claim 2, characterized in that: A first flow channel is connected between the waste chamber and the smelting furnace, and a second flow channel is connected between the smelting furnace and the static furnace.

6. A can body aluminum alloy smelting system according to claim 5, characterized in that: The heating chamber is provided with a first furnace door, the waste chamber is provided with a second furnace door, the smelting furnace is provided with a third furnace door, and the static furnace is provided with a fourth furnace door.

7. A can body aluminum alloy smelting system according to claim 6, characterized in that: A furnace bridge is provided in the waste chamber, and the furnace bridge is arranged close to one side of the second furnace door, and the area of ​​the furnace bridge is smaller than the cross-sectional area of ​​the waste chamber.

8. The aluminum alloy smelting system for can body materials according to claim 5, characterized in that: The waste chamber is connected to a vortex well, a debris inlet is provided at the top of the vortex well, and an aluminum liquid channel connected to the first flow channel is provided at the bottom of the vortex well.

9. The aluminum alloy smelting system for can body materials according to claim 8, characterized in that: A vortex channel is arranged between the waste chamber and the vortex well, the vortex channel is tangent to the inner wall of the vortex well, and a circulation pump is arranged on the vortex channel.

10. The aluminum alloy smelting system for can body materials according to claim 8, characterized in that: A conveyor belt is arranged outside the vortex well, and an outlet of the conveyor belt faces the debris inlet of the vortex well.

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