A recycled aluminum processing production system and method

Abstract

The present invention provides a recycled aluminum processing production system, including: a feeding mechanism for transporting recycled aluminum raw materials from a low position to a first furnace body; the first furnace body is used to preheat, surface paint stripping, film stripping, and melting the recycled aluminum raw materials to obtain aluminum solution; the second furnace body is used to allow the aluminum solution to stand and filter, remove impurities in the aluminum solution, and obtain a qualified aluminum solution; the third furnace body is used to refine and mix the aluminum solution after impurities removal to obtain an aluminum solution that passes the ratio inspection; a forming mechanism is used to shape the aluminum solution into aluminum ingots and transport it to a stacker; the stacker is used to transport and stack the aluminum ingots. The present invention also provides a recycled aluminum processing production method. The present invention has a reasonable design, high production efficiency, ensures the quality of aluminum alloys, and can reduce production costs and control waste emissions.

Description

Technical Field

[0001] The present invention relates to the field of recycled aluminum processing, and in particular to a recycled aluminum processing production system and method. Background Art

[0002] The output of recycled aluminum alloy waste is very large both at home and abroad, and it needs to be recycled. At present, the technology for recycling recycled aluminum alloy is relatively immature. The recycling of traditional aluminum alloy waste has many shortcomings in crushing, sorting, dust removal, waste environmental protection, and the production efficiency of the entire process, resulting in low utilization rate of aluminum alloy waste, substandard purity of production products, and inability to supply the production and use of high-end products. In addition, a large amount of waste gas and waste dust will be generated, causing atmospheric pollution; due to the uncoordinated setting of the entire process, there is intermittent work in the entire production process, and continuous and uninterrupted operation cannot be achieved, resulting in low production efficiency and high production costs, which is not conducive to the further exploration and development of the entire process. Summary of the invention

[0003] In order to solve the problems raised in the background technology, the present invention proposes a recycled aluminum processing production system and method which has reasonable structural design, high production efficiency, ensures the quality of aluminum alloy, and can reduce production costs and control waste emissions.

[0004] The technical solution of the present invention is as follows:

[0005] A recycled aluminum processing and production system, comprising:

[0006] A feeding mechanism, used for conveying the recycled aluminum raw material from a low position to a feeding port located at the top of the first furnace body;

[0007] The first furnace body is arranged on one side of the feeding mechanism and is used for preheating, surface paint removal, film removal and melting of the recycled aluminum raw material to obtain an aluminum solution;

[0008] The second furnace body is arranged on one side of the first furnace body, the installation floor of the second furnace body is lower than the installation floor of the first furnace body, and is used for standing and filtering the aluminum solution to remove impurities in the aluminum solution to obtain a qualified aluminum solution;

[0009] The third furnace body is arranged on one side of the second furnace body, the installation floor of the third furnace body is lower than the installation floor of the second furnace body, and is used to refine and mix the aluminum solution after impurities are removed to obtain the aluminum solution that passes the ratio inspection;

[0010] A forming mechanism, arranged on one side of the third furnace body, is used to shape the aluminum solution into aluminum ingots and transport them to the stacker;

[0011] The stacker is arranged on one side of the forming mechanism and is used for transporting and stacking the aluminum ingots.

[0012] Preferably, the first furnace body includes a heating chamber and a feeding chamber; the heating chamber and the feeding chamber are connected by two groups of circulation channels; a feed port is provided on the top of the feeding chamber; the heating chamber, the feeding chamber, the second furnace body and the third furnace body are all provided with a burner, a combustion-supporting pipe, a heat exchanger and a smoke exhaust pipe; the combustion-supporting pipe and the smoke exhaust pipe are respectively connected to the heat exchanger; a filter layer is provided inside the second furnace body; and a height-adjustable electromagnetic stirrer is provided at the bottom of the third furnace body and the circulation channel.

[0013] Preferably, the first furnace body, the second furnace body and the third furnace body all include an upper furnace wall, a lower furnace wall, a furnace bottom and a furnace top; the upper furnace wall is provided with a temperature sensor, a burner, a combustion-supporting pipe, a heat exchanger and a smoke exhaust pipe; the lower furnace wall is provided with a furnace door, a liquid outlet pipe and a liquid inlet pipe; the upper furnace wall is provided with an upper wall medium-quality casting layer and an upper wall light-weight insulation casting layer from the inside to the outside; the upper furnace wall is provided with an air duct installation port and a gas duct installation port for installing the smoke exhaust pipe and the combustion-supporting pipe The burner installation opening is installed on the burner; the furnace lower wall is sequentially arranged as a lower wall anti-aluminum corrosion casting layer, a lower wall anti-seepage casting layer, and a lower wall lightweight insulation casting layer from the inside to the outside; a liquid inlet and a liquid outlet are arranged on the furnace lower wall; the furnace bottom is sequentially arranged as a furnace bottom anti-aluminum corrosion casting layer, a furnace bottom anti-seepage casting layer, and a furnace bottom lightweight insulation casting layer from the inside to the outside; the furnace top is sequentially arranged as a furnace top medium quality casting material layer and a furnace top lightweight insulation casting material layer from the inside to the outside.

[0014] Preferably, it also includes a dust removal system, which includes a dust hood and a smoke exhaust pipe arranged on the first furnace body, the second furnace body and the third furnace body; the dust hood is arranged on the furnace door; and the smoke exhaust pipe is arranged on the furnace body.

[0015] Preferably, the dust hood includes a collection area, a circulation area, a smoke collection area and a main smoke duct; the collection area is connected to the circulation area above; the circulation area is connected to the smoke collection area above; the smoke collection area is connected to the main smoke duct above; and a smoke extraction fan is provided in the main smoke duct.

[0016] Preferably, it also includes a feeding mechanism for receiving, storing, preheating and transporting recycled aluminum raw materials, the feeding mechanism includes a feeding pipe; one end of the feeding pipe is connected to the loading mechanism, and the other end of the feeding pipe is provided with an inlet pipe; the inlet pipe is connected to the feeding port of the first furnace body; and a spiral blade is provided inside the feeding pipe.

[0017] Preferably, the feeding mechanism includes a base plate and a fixed frame arranged on the upper end of the base plate, a fixed plate is provided in the center of the fixed frame, guide grooves are symmetrically provided on both sides of the inner wall of the fixed frame, guide wheels are provided on both sides of the fixed plate that are rollingly connected to the guide grooves, and a transmission assembly for driving the fixed plate to move up and down is provided on the fixed frame; a material pouring device is provided on one side of the fixed plate.

[0018] Preferably, the material pouring device includes a charging box and a cleaning plate arranged in the charging box, a baffle is provided on the side of the charging box away from the fixed plate, and the upper end of the baffle is rotatably connected to the charging box; sliding grooves are symmetrically provided on the inner walls of both sides of the charging box, and matching blocks slidably connected to the sliding grooves are provided on both sides of the cleaning plate, and first grooves are symmetrically provided on the lower ends of both sides of the cleaning plate close to one side of the baffle, and connecting rods are rotatably connected in the first grooves, and second grooves corresponding to the two first grooves are provided at the lower end of the side of the baffle close to the cleaning plate, and the end of the connecting rod away from the first groove is rotatably connected in the second groove; a driving component for driving the matching block to slide in the sliding groove is provided on the charging box.

[0019] Preferably, the forming mechanism includes a transport device, aluminum ingot molds uniformly arranged on the transport device, and a cooling device; the installation ground of the cooling device is lower than the installation ground of the third furnace body; and a part of the transport device is located in the cooling device.

[0020] A method for processing and producing recycled aluminum, the method comprising the following steps:

[0021] Recycled aluminum raw material sorting process

[0022] The recycled aluminum raw materials are first analyzed and tested when they enter the factory. Unqualified raw materials are directly returned to the supplier, and qualified raw materials are sorted and divided into cast aluminum raw materials and deformed aluminum raw materials according to their different components, and stored in different warehouses for use;

[0023] Preheating process

[0024] The recycled aluminum raw material is poured into the first furnace body through the feeding mechanism for preheating, surface paint removal, film removal, and melting to obtain an aluminum solution;

[0025] Alternatively, the recycled aluminum raw material is poured into the feeding mechanism through the feeding mechanism, and is fed into the first furnace body through the feeding mechanism for preheating, surface paint removal, film removal, and melting to obtain an aluminum solution;

[0026] In this step, the first furnace body adopts a double-chamber furnace, which includes a heating chamber and a charging chamber. The charging chamber is connected to the feeding structure, and the heating chamber is connected to the second furnace body. A flow channel is provided between the heating chamber and the charging chamber. An electromagnetic stirrer is provided at the bottom of the flow channel. The electromagnetic stirrer provides flow power for the aluminum solution, stirs the aluminum solution, and brings the high-temperature aluminum solution in the heating chamber into the charging chamber to flush the solid aluminum material, thereby realizing the preheating and melting process.

[0027] Purification process

[0028] The aluminum solution obtained after melting in the first furnace body enters the second furnace body, and the aluminum solution is kept still under heat preservation state to separate the iron impurities from the aluminum solution, and the unmelted iron impurities are filtered out to obtain an aluminum solution without iron elements;

[0029] Conditioning and refining process

[0030] The aluminum solution without iron enters the third furnace body, where it is refined and the alloy ratio is adjusted under the heat preservation state. After sampling and analysis, if the ratio is unqualified, the material is supplemented and fine-tuned to finally obtain the aluminum solution with qualified ratio.

[0031] Molding process

[0032] The aluminum solution from the third furnace body flows into the forming mold of the forming mechanism, is transported to the cooling device through the transport device, and is cooled and solidified to form an aluminum ingot;

[0033] Finished product finishing process

[0034] The aluminum ingots are stacked together by a stacker and packaged into finished products;

[0035] Environmentally friendly processing process

[0036] A dust hood is arranged at the furnace door of each furnace body, and a smoke exhaust pipe is arranged on each furnace body. The smoke in the dust hood and the smoke exhaust pipe is discharged into the dust removal system for environmental protection treatment.

[0037] Beneficial effects of the present invention:

[0038] 1. The overall structural design of the present invention is reasonable. It obtains a production system and method of pure aluminum ingots or aluminum alloy ingots through the sorting, preheating, impurity removal and purification, modulation and refining, and forming of recycled aluminum raw materials and supporting dust removal and environmental protection treatment equipment, realizes the recovery, melting and refining of waste aluminum materials, and the obtained aluminum and aluminum alloys are recycled and reused, optimizes the equipment and process for melting, impurity removal and refining of recycled aluminum raw materials, reduces production costs and increases revenues, saves energy and reduces aluminum burning, reduces greenhouse gas and toxic gas emissions to meet environmental standards, and improves the quality of aluminum ingots and aluminum alloys.

[0039] 2. The preheating process of the present invention adopts a double-chamber melting furnace, the charging chamber is used to preheat the raw materials, the heating chamber is used to dissolve the raw materials, and the electromagnetic stirrer is used to provide the aluminum solution with flow power, stir the aluminum solution, and bring the high-temperature aluminum solution in the heating chamber into the charging chamber to flush the solid aluminum material, thereby realizing immersion-type low-burning melting, thereby improving production efficiency and melting effect, and energy consumption is greatly reduced compared with the existing melting method.

[0040] 3. The present invention is provided with a dust removal system, which can not only treat the flue gas generated by the combustion of the furnace body in an environmentally friendly manner, but also extract the heat and flue gas overflowing from the furnace door, thereby reducing the temperature of the operating area, protecting the surrounding environment, and ensuring the safety and health of the staff.

[0041] 4. The feeding device provided in the present invention pushes the raw materials in the charging box outwards through the cleaning plate during the feeding process, so as to prevent the raw materials from adhering to and remaining in the hopper, thereby facilitating the use. Meanwhile, the device is easy to move and has strong flexibility.

[0042] 5. The second furnace body used in the impurity removal and purification process of the present invention is easy to clean, has good filtering effect and good heat preservation effect. It can not only effectively filter out impurities in the aluminum solution, but also clean the filter layer by opening the furnace door, and can reasonably adjust the temperature in the furnace. In the process of static filtration, it can prevent the cooling of the aluminum solution from affecting the filtering effect and causing aluminum loss, and can also maintain the temperature of the aluminum solution at a specific temperature to prevent other high-melting-point impurity metals from being liquefied due to excessive temperature, thereby mixing with the aluminum solution and affecting the purity of the aluminum solution. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] In order to more clearly illustrate the technical solution of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only partial embodiments of the present invention. Any improvements made within the scope of the concept of the present invention and that do not require creative labor can be used as other embodiments of the present invention.

[0044] Figure 1 It is a structural schematic diagram of the present invention;

[0045] Figure 2 It is a structural schematic diagram of the first furnace body of the present invention;

[0046] Figure 3 It is a schematic diagram of the internal structure of the first furnace body of the present invention;

[0047] Figure 4 is a top view of the first furnace body of the present invention;

[0048] Figure 5 It is a structural schematic diagram of the second furnace body of the present invention;

[0049] Figure 6 is a cross-sectional schematic diagram of a second furnace body of the present invention;

[0050] Figure 7 It is a structural schematic diagram of the third furnace body of the present invention;

[0051] Figure 8 It is a structural schematic diagram of the feeding mechanism of the present invention;

[0052] Fig. 9It is a structural schematic diagram of the material pouring device of the present invention;

[0053] Fig.10 It is a schematic diagram of the cross-sectional structure of the material pouring device of the present invention;

[0054] Fig.11 It is a structural schematic diagram of the feeding mechanism of the present invention;

[0055] Fig.12 It is the production process diagram of the present invention. DETAILED DESCRIPTION

[0056] The present invention will be further described below in conjunction with the accompanying drawings so that those skilled in the art can understand the present invention.

[0057] All directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly; all technical features named with numbers such as "first", "second", or "No. 1", "No. 2" are only used for reference, and have no meaning of indicating quantity or importance; all "connection" or similar words should be understood in a broad sense, for example, the connection can be a mechanical connection or an electrical connection, a direct connection or an indirect connection, a fixed connection or a detachable connection, etc., which is determined according to the actual intention of the technical solution; the technical features of multiple embodiments can be freely combined with each other without conflict, as long as they can constitute a technical solution to the corresponding technical problem.

[0058] like Figure 1 As shown, a recycled aluminum processing production system includes a feeding mechanism 100, a first furnace body 300, a second furnace body 400, a third furnace body 500, a forming mechanism and a stacker 800: wherein the feeding mechanism 100 is used to transport the recycled aluminum raw material from a low position to a feeding port 3011 located at the top of the first furnace body 300; the first furnace body 300 is arranged on one side of the feeding mechanism 100, and is used to preheat, remove paint, remove film, and melt the recycled aluminum raw material to obtain an aluminum solution; the second furnace body 400 is arranged on one side of the first furnace body 300, and the installation ground of the second furnace body 400 is lower than that of the first furnace body 300. The installation ground of the third furnace body 300 is used to allow the aluminum solution to stand and filter, remove impurities in the aluminum solution, and obtain qualified aluminum solution; the third furnace body 500 is arranged on one side of the second furnace body 400, and the installation ground of the third furnace body 500 is lower than the installation ground of the second furnace body 400, and is used to refine and mix the aluminum solution after the impurities are removed, and obtain aluminum solution that passes the ratio inspection; the forming mechanism is arranged on one side of the third furnace body 500, and is used to shape the aluminum solution into aluminum ingots and transport them to the stacker 800; the stacker 800 is arranged on one side of the forming mechanism, and is used to transport and stack the aluminum ingots.

[0059] like Figure 2-Figure 4 As shown, in this embodiment, the first furnace body 300 includes a heating chamber 301, a feeding chamber 304 and an electromagnetic stirrer 1; the heating chamber 301 and the feeding chamber 304 are connected by two sets of circulation channels 303; a height-adjustable electromagnetic stirrer 1 is arranged below the circulation channel 303; a feed port 3011 is arranged on the top of the feeding chamber 304; a burner 4, a combustion-supporting pipe 5, a heat exchanger 6 and a smoke exhaust pipe 3 are arranged on the heating chamber 301 and the feeding chamber 304; the smoke exhaust pipe 3 and the combustion-supporting pipe 5 are connected to the heat exchanger 6; and a furnace door 302 is arranged in the heating chamber 301 and the feeding chamber 304. In specific operation, the burner 4 is a regenerative combustion system. A set of 500 type paired regenerative combustion systems is configured in the heating chamber 301. The temperature of the aluminum solution 3012 in the heating chamber 301 can reach 680-720°C. A set of electromagnetic stirrer 1 is configured at the bottom of the circulation channel 303. The high-temperature aluminum solution 3012 in the heating chamber 301 is brought into the feeding chamber 304 by the electromagnetic stirrer 1 to flush the solid aluminum material 3013. After the solid aluminum material 3013 is melted, the flowing aluminum solution 3012 enters the feeding chamber 304 from another circulation channel 303 for heating treatment. The feeding chamber 304 is configured with a set of 160 type paired regenerative combustion systems. The solid aluminum material is preheated to a temperature of 400-480°C in the heating chamber 301. Preheating treatment before combustion can effectively reduce energy consumption and aluminum loss. The double-chamber melting furnace realizes immersion-type low-burning melting, thereby improving production efficiency and melting effect, and the energy consumption is greatly reduced compared with the existing melting methods.

[0060] In this embodiment, two groups of burners 4 are arranged on the heating chamber 301 and the feeding chamber 304, and the angle between the two groups of burners 4 is 50-80 degrees, which can achieve full combustion of aluminum material in the maximum range.

[0061] In this embodiment, two groups of combustion-supporting tubes 5 are arranged on the heating chamber 301 and the charging chamber 304, respectively, which can provide sufficient combustion-supporting gas for the full combustion of the aluminum material. In the specific implementation, the combustion-supporting gas enters the combustion-supporting tube 5 through the heat exchanger 6, and the smoke generated in the heating chamber 301 and the charging chamber 304 is discharged from the smoke exhaust pipe 3. The discharged high-temperature smoke also passes through the heat exchanger 6. The combustion-supporting gas and the high-temperature smoke are preheated by heat exchange. The preheated combustion-supporting gas enters the combustion-supporting tube 5, thereby providing high-temperature combustion-supporting wind for the heating chamber 301 and the charging chamber 304, thereby greatly saving energy.

[0062] like Figure 5 , Figure 6As shown, the second furnace body 400 includes a furnace body 401, and the furnace body 401 includes an upper wall 4011, a lower wall 4012, a furnace bottom 4013 and a furnace top 4014; the upper wall 4011 is provided with a temperature sensor, a burner 4, a smoke exhaust pipe 3 and a combustion-supporting pipe 5; the lower wall 4012 is provided with a furnace door 402, a liquid outlet pipe and a liquid inlet pipe; a filter layer 4019 is provided in the lower wall 4012; the liquid inlet pipe is located above the filter layer 4019, and the liquid outlet pipe is located below the filter layer 4019; the lower surface of the furnace bottom 4013 is inclined along the outlet direction of the aluminum solution. In specific operation, the aluminum solution melted from the first furnace body 300 contains a large amount of impurity metals of different volumes, such as Figure 6 The large-volume impurities 409 and small-volume impurities 4010 shown in the figure, regardless of the density of the impurity metal, will be isolated above the outlet of the aluminum solution by the filter layer 4019. In order to facilitate the outflow of the entire aluminum solution, the surface of the furnace bottom 4013 is inclined toward the outlet of the aluminum solution, which further facilitates the outflow of the aluminum solution, avoids residual aluminum solution in the furnace, reduces aluminum loss, and reduces costs.

[0063] In specific operation, the aluminum solution melted out of the first furnace body 300 enters the second furnace body 400 through the liquid inlet pipe to start the static filtration process. The temperature in the furnace can be controlled by the temperature sensor, and the storage environment of the aluminum solution can be adjusted in time: in order to prevent the aluminum solution from having poor fluidity due to the decrease in temperature during the static filtration process, thereby affecting the filtration effect and causing aluminum damage, the burner 4, the smoke exhaust pipe 3 and the combustion-supporting pipe 5 can be turned on to heat the aluminum solution to maintain a liquid state; or to prevent the temperature in the furnace from being too high to melt the impurity metal, the burner 4 can be turned off, the smoke exhaust speed of the smoke exhaust pipe 3 and the air supply speed of the combustion-supporting pipe 5 can be increased, thereby increasing the overall heat exhaust speed to reduce the temperature in the furnace, so that the temperature in the furnace is maintained at the required temperature of the aluminum solution, but lower than the melting point of the impurity metal.

[0064] When the aluminum solution enters the furnace body through the liquid inlet 4017, the temperature in the furnace body is adjusted at any time by the temperature sensor to allow the aluminum solution to stand for treatment. During the standing process, large-volume impurities 409 with high density will settle on the filter layer 4019, and small-volume impurities 4010 with low density will float on the surface of the aluminum solution. Then the liquid outlet pipe is opened, and the aluminum solution enters the liquid outlet 4018 along the furnace bottom 4013 and flows to the third furnace body 500.

[0065] In order to ensure the heat preservation effect of the furnace body, the upper wall 4011 of the furnace that does not contact the aluminum solution is sequentially provided with an upper wall medium quality casting layer 40111 and an upper wall light insulation casting layer 40112 from the inside to the outside; the upper wall 4011 of the furnace is provided with an airway installation opening 4015 for installing the exhaust pipe 3 and the combustion-supporting pipe 5 and a burner installation opening 4016 for installing the burner 4. The furnace top 4014 that does not contact the aluminum solution is sequentially provided with a furnace top medium quality casting material layer 40142 and a furnace top light insulation casting material layer 40141 from the inside to the outside.

[0066] See also Figure 6 In this embodiment, the air duct mounting port 4015 is composed of a thermal insulation casting layer 40151, which has a good thermal insulation effect. The smoke exhaust pipe 3 and the combustion-supporting pipe 5 are installed on the air duct mounting port 4015, which can effectively block the leakage of flue gas heat; the burner mounting port 4016 is composed of a self-flowing high-strength casting layer 40161, which has good heat resistance and thermal insulation effects. The burner of the combustion-supporting pipe 5 is installed on the burner mounting port 4016, which ensures the strength of the furnace body's own structure.

[0067] The part of the furnace body in contact with the aluminum solution must not only meet the heat preservation effect, but also ensure that the furnace body has the characteristics of high temperature resistance, so as to ensure the strength of its own structure. Therefore, the furnace lower wall 4012 in contact with the aluminum solution is sequentially arranged from the inside to the outside as a lower wall anti-aluminum corrosion casting layer 40121, a lower wall anti-seepage casting layer 40122, and a lower wall lightweight insulation casting layer 40123; the furnace lower wall 4012 is provided with a liquid inlet 4017 and a liquid outlet 4018. The liquid inlet 4017 and the liquid outlet 4018 are composed of an anti-aluminum corrosion casting layer. The furnace bottom 4013 is sequentially arranged from the inside to the outside as a furnace bottom anti-aluminum corrosion casting layer 40131, a furnace bottom anti-seepage casting layer 40132, and a furnace bottom lightweight insulation casting layer 40133. These structural designs not only meet the heat preservation effect, but also have the characteristics of high temperature resistance, and can ensure the strength of their own structure. The wall structures of the first furnace body 300 and the third furnace body 500 are the same as those of the second furnace body 400 , and thus will not be described again herein.

[0068] The aluminum solution melted out of the first furnace body 300 enters the second furnace body 400 through the liquid inlet pipe to start the static filtration process. The temperature in the furnace can be monitored by the temperature sensor, and the storage environment of the aluminum solution can be adjusted in time: in order to prevent the aluminum solution from having poor fluidity due to a decrease in temperature during the static filtration process, thereby affecting the filtration effect and causing aluminum damage, the burner 4, the smoke exhaust pipe 3 and the combustion-supporting pipe 5 can be turned on to heat the aluminum solution to maintain a liquid state; or to prevent the temperature in the furnace from being too high to melt the impurity metal, the burner 4 can be turned off, the smoke exhaust speed of the smoke exhaust pipe 3 and the air supply speed of the combustion-supporting pipe 5 can be increased, thereby increasing the overall heat exhaust speed to reduce the temperature in the furnace, so that the temperature in the furnace is maintained at the required temperature of the aluminum solution, but lower than the melting point of the impurity metal.

[0069] After the aluminum solution enters the furnace body 401 through the liquid inlet 4017, the temperature in the furnace body 401 is adjusted at any time by the temperature sensor, so that the aluminum solution is allowed to stand for treatment. During the standing process, large-volume impurities 409 with high density will settle on the filter layer 4019, and small-volume impurities 4010 with low density will float on the surface of the aluminum solution. Then the liquid outlet pipe is opened, and the aluminum solution enters the liquid outlet 4018 along the furnace bottom 4013 and flows to the next processing equipment.

[0070] like Figure 7 As shown, the third furnace body 500 includes a furnace body 501 , on which a burner 4 , a smoke exhaust pipe 3 and a combustion-supporting pipe 5 are arranged, and the smoke exhaust pipe 3 and the combustion-supporting pipe 5 are connected to a heat exchanger 6 ; a height-adjustable electromagnetic stirrer 1 is arranged below the furnace body 501 .

[0071] In a specific implementation, the combustion-supporting gas in the combustion-supporting tubes 5 of the first furnace body 300, the second furnace body 400 and the third furnace body 500 first passes through the heat exchanger 6, and the smoke generated in the furnace body is discharged from the smoke exhaust pipe 3. The discharged high-temperature smoke gas also passes through the heat exchanger 6, and the combustion-supporting gas and the high-temperature smoke are preheated by heat exchange. The preheated combustion-supporting gas enters the combustion-supporting tube 5, thereby providing high-temperature combustion-supporting air in the furnace body, thereby greatly saving energy.

[0072] In a specific implementation, the installation ground of the first furnace body 300 and the third furnace body 500 provided with the electromagnetic stirrer 1 is provided with a first groove 22, a concrete layer 23 is provided in the first groove 22, the upper end surface height of the concrete layer 23 is lower than the upper end surface height of the ground 21, a furnace body 501 located at the upper end of the concrete layer 23 is provided in the first groove 22, the upper end of the ground 21 and the inner wall of the first groove 22 are paved with refractory bricks 25, a second groove 24 is provided on the concrete layer 23, a telescopic device 12 is provided in the second groove 24, and the bottom of the electromagnetic stirrer 1 is connected to the telescopic device 12, wherein the concrete layer 23 improves the stability of the basic structure of the furnace body 501, and at the same time improves the heat resistance of the basic structure through the refractory bricks 25. The electromagnetic stirrer 1 itself is retractable, and the telescopic device 12 provided at the bottom can also be used to adjust the height of the electromagnetic stirrer 1, thereby facilitating the adjustment of the distance between the electromagnetic stirrer 1 and the furnace body 501, and facilitating use.

[0073] like Figure 1 , Figure 5 , Figure 7As shown, in this embodiment, the first furnace body 300, the second furnace body 400, and the third furnace body 500 are all provided with a dust removal system 900, and the dust removal system 900 includes a dust hood 901 and a smoke exhaust pipe 3 provided on the first furnace body 300, the second furnace body 400, and the third furnace body 500, wherein the dust hood 901 is provided on the furnace door; and the smoke exhaust pipe 3 is provided on the furnace body. In specific operation, the dust hood 901 includes a collection area 9011, a circulation area 9012, a smoke collection area 9013, and a main smoke pipe 9014; the collection area 9011 is connected to the circulation area 9012 above; the circulation area 9012 is connected to the smoke collection area 9013 above; the smoke collection area 9013 is connected to the main smoke pipe 9014 above; and a smoke exhaust fan is provided in the main smoke pipe 9014.

[0074] like Figure 1 As shown, the system also includes a feeding mechanism 200 for receiving, storing, preheating and conveying recycled aluminum raw materials, and the feeding mechanism 200 includes a feeding pipe 201; one end of the feeding pipe 201 is connected to the loading mechanism 100, and the other end of the feeding pipe 201 is provided with a feeding pipe 203; the feeding pipe 203 is connected to the feeding port of the first furnace body 300; a spiral blade 202 is provided inside the feeding pipe 201, and in specific operations, the spiral blade 202 is controlled to rotate by an external motor to convey the raw materials entering the feeding pipe 201 to the feeding pipe 203, and then enters the first furnace body 300 for preheating and smelting treatment.

[0075] like Figure 8-Figure 10 As shown, in this embodiment, the loading mechanism 100 includes a base plate 104 and a fixed frame 101 arranged at the upper end of the base plate 104, a fixed plate 106 is arranged in the center of the fixed frame 101, guide grooves 102 are symmetrically arranged on both sides of the inner wall of the fixed frame 101, guide wheels 103 are provided on both sides of the fixed plate 106 that are rollingly connected to the guide grooves 102, and a transmission component for driving the fixed plate 106 to move up and down is provided on the fixed frame 101; a material pouring device 108 is provided on one side of the fixed plate 106. In specific operation, the transmission assembly includes a first screw rod 105 arranged on the fixed frame 101, the upper end of the first screw rod 105 is rotatably connected to the fixed frame 101, the lower end of the first screw rod 105 is rotatably connected to the base plate 104, the upper end of the first screw rod 105 is fixedly connected to the output end of the first motor 107 arranged on the fixed frame 101, and the first screw rod 105 is threadedly connected to the fixed plate 106. In this way, the first motor 107 drives the first screw rod 105 to rotate, and the first screw rod 105 can drive the fixed plate 106 to move up and down through the threaded connection with the fixed plate 106.

[0076] The unloading device 108 includes a loading box 1081 and a cleaning plate 1084 arranged in the loading box 1081. A baffle 1082 is provided on the side of the loading box 1081 away from the fixed plate 106, and the upper end of the baffle 1082 is rotatably connected to the loading box 1081; the inner walls on both sides of the loading box 1081 are symmetrically provided with sliding grooves 1085, and both sides of the cleaning plate 1084 are provided with matching blocks 1086 slidably connected to the sliding grooves 1085. The lower end of the side is symmetrically provided with a first groove 1089, and a connecting rod 1083 is rotatably connected in the first groove 1089. The lower end of the baffle 1082 close to the cleaning plate 1084 is provided with a second groove 10810 corresponding to the two first grooves 1089, and the end of the connecting rod 1083 away from the first groove 1089 is rotatably connected in the second groove 10810; the loading box 1081 is provided with a driving component for driving the matching block 1086 to slide in the slide groove 1085. In specific operation, the driving assembly includes a second screw rod 1087 rotatably connected to one of the slide grooves 1085, the second screw rod 1087 is threadedly connected to the matching block 1086, and the end of the second screw rod 1087 is fixedly connected to the output end of the second motor 1088 provided on the charging box 1081. In this way, when it is necessary to put the raw materials into the first furnace body 300, the second motor 1088 can be used to drive the second screw rod 1087 to rotate, so that the second screw rod 1087 is threadedly connected to the matching block 1086 to push the cleaning plate 1084 toward the baffle 1082. The cleaning plate 1084 moves in the process of movement, so that the connecting rod 1083 drives the baffle 1082 to move, and the connecting rod 1083 pushes the baffle 1082 to move. At the same time, through the limiting effect of the rotational connection between the upper end of the baffle 1082 and the loading box 1081, the connecting rod 1083 pushes the baffle 1082 to rotate upward, so that the cleaning plate 1084 pushes the baffle 1082 to unfold while moving, thereby pushing the raw materials in the loading box 1081 outward through the cleaning plate 1084 for loading, thereby preventing the raw materials from adhering to and remaining in the loading box 1081.

[0077] like Fig.11As shown, during the feeding process, the raw materials are first placed in the loading box 1081, and then the loading box 1081 is driven to move upward by the transmission action of the first motor 107 and the first screw rod 105. When the bottom plate of the loading box 1081 abuts against the feed hopper of the feed pipe 201, the second motor 1088 drives the second screw rod 1087 to rotate, and the cleaning plate 1084 is pushed outward by the second screw rod 1087. At the same time, the cleaning plate 1084 pushes the baffle plate 1082 upward through the connecting rod 1083. Rotate, so that the raw materials can be discharged from the loading box 1081 and fall into the feed hopper, and then enter the feed pipe 201. At the same time, the raw materials in the loading box 1081 are pushed outward by the cleaning plate 1084 to prevent the raw materials from adhering to and remaining in the loading box 1081. Then, the first motor 107 and the second motor 1088 are reversed to drive the cleaning plate 1084 and the baffle 1082 to reset and seal the loading box 1081, and at the same time, the loading box 1081 is moved downward, and the loading of the raw materials can be completed again.

[0078] Preferably, the forming mechanism includes a transport device 600, aluminum ingot molds uniformly arranged on the transport device, and a cooling device 700; the installation ground of the cooling device 700 is lower than the installation ground of the third furnace body 500; and a part of the transport device 600 is located in the cooling device 700. In specific operation, cooling water is installed in the cooling device 700, and the transport device can be a chain drive or a belt drive. Driven by the transport device, the aluminum ingot mold is transported to the bottom of the liquid surface of the cooling device 700 for cooling. The aluminum solution coming out of the cooling device 700 is cooled and shaped into an aluminum ingot, and then transported to the stacker 800 by the transport device. The stacker 800 uses a mechanical arm to neatly place the aluminum ingots for packaging.

[0079] A method for processing and producing recycled aluminum, the method comprising the following steps:

[0080] (1) Recycled aluminum raw material sorting process

[0081] The recycled aluminum raw materials are first analyzed and tested when they enter the factory. Unqualified raw materials are directly returned to the supplier, and qualified raw materials are sorted and divided into cast aluminum raw materials and deformed aluminum raw materials according to their different components, and stored in different warehouses for use.

[0082] (2) Preheating process

[0083] The recycled aluminum raw material is poured into the first furnace body through the feeding mechanism for preheating, surface paint removal, film removal, and melting to obtain an aluminum solution;

[0084] In this step, the first furnace body adopts a double-chamber furnace, which includes a heating chamber 301 and a charging chamber 304. The charging chamber 304 is connected to the feeding structure, and the heating chamber 301 is connected to the second furnace body. A flow channel 303 is provided between the heating chamber 301 and the charging chamber 304. An electromagnetic stirrer 1 is provided at the bottom of the flow channel 303. The electromagnetic stirrer 1 provides a flow power for the aluminum solution to stir the aluminum solution, and the high-temperature aluminum solution in the heating chamber 301 is brought into the charging chamber 304 to flush the solid aluminum material, thereby realizing the preheating and melting process.

[0085] (3) Impurity removal and purification process

[0086] The aluminum solution obtained after melting in the first furnace body enters the second furnace body, and the aluminum solution is kept still under heat preservation state to separate the iron impurities from the aluminum solution, and the unmelted iron impurities are filtered out to obtain an aluminum solution without iron elements;

[0087] (4) Modulation and refining process

[0088] The aluminum solution without iron enters the third furnace body, where it is refined and the alloy ratio is adjusted under the heat preservation state. After sampling and analysis, if the ratio is unqualified, the material is supplemented and fine-tuned to finally obtain the aluminum solution with qualified ratio.

[0089] (5) Molding process

[0090] The aluminum solution from the third furnace body flows into the forming mold of the forming mechanism, is transported to the cooling device through the transport device, and is cooled and solidified to form an aluminum ingot;

[0091] (6) Finished product finishing process

[0092] The aluminum ingots are stacked together by a stacker and packaged into finished products;

[0093] (7) Environmental protection treatment process

[0094] A dust hood is arranged at the furnace door of each furnace body, and a smoke exhaust pipe is arranged on each furnace body. The smoke in the dust hood and the smoke exhaust pipe is discharged into the dust removal system for environmental protection treatment.

[0095] The parts not described in detail in the present invention can be implemented by using existing technologies and do not constitute a limitation to the present invention.

[0096] The above embodiments are only used to illustrate the preferred implementation mode of the present invention, rather than to limit the present invention. For ordinary technicians in this field, according to the concept of the present invention, there will be changes in the specific implementation mode and application scope, and the content of this specification should not be understood as limiting the present invention.

Claims

1. A recycled aluminum processing and production system, characterized in that: include: A feeding mechanism, used for conveying the recycled aluminum raw material from a low position to a feeding port located at the top of the first furnace body; The first furnace body is arranged on one side of the feeding mechanism and is used for preheating, surface paint removal, film removal and melting of the recycled aluminum raw material to obtain an aluminum solution; The second furnace body is arranged on one side of the first furnace body, the installation floor of the second furnace body is lower than the installation floor of the first furnace body, and is used for standing and filtering the aluminum solution to remove impurities in the aluminum solution to obtain a qualified aluminum solution; The third furnace body is arranged on one side of the second furnace body, the installation floor of the third furnace body is lower than the installation floor of the second furnace body, and is used to refine and mix the aluminum solution after impurities are removed to obtain the aluminum solution that passes the ratio inspection; A forming mechanism, arranged on one side of the third furnace body, is used to shape the aluminum solution into aluminum ingots and transport them to the stacker; The stacker is arranged on one side of the forming mechanism and is used for transporting and stacking the aluminum ingots; The first furnace body comprises a heating chamber and a charging chamber; the heating chamber and the charging chamber are connected by two sets of circulation channels; a feeding port is arranged on the top of the charging chamber; a burner, a combustion-supporting pipe, a heat exchanger and a smoke exhaust pipe are arranged on the heating chamber, the charging chamber, the second furnace body and the third furnace body; the combustion-supporting pipe and the smoke exhaust pipe are respectively connected to the heat exchanger; a filter layer is arranged inside the second furnace body; a height-adjustable electromagnetic stirrer is arranged at the bottom of the third furnace body and the circulation channel; The first furnace body, the second furnace body and the third furnace body all include an upper furnace wall, a lower furnace wall, a furnace bottom and a furnace top; a temperature sensor, a burner, a combustion-supporting pipe, a heat exchanger and a smoke exhaust pipe are arranged on the upper furnace wall; a furnace door, a liquid outlet pipe and a liquid inlet pipe are arranged on the lower furnace wall; the upper furnace wall is arranged from the inside to the outside as an upper wall medium-quality casting layer and an upper wall lightweight insulation casting layer; an air duct installation port for installing a smoke exhaust pipe and a combustion-supporting pipe and a burner installation port for installing a burner are arranged on the upper furnace wall; the lower furnace wall is arranged from the inside to the outside as a lower wall anti-aluminum corrosion casting layer, a lower wall anti-seepage layer casting layer and a lower wall lightweight insulation casting layer; a liquid inlet and a liquid outlet are arranged on the lower furnace wall; the furnace bottom is arranged from the inside to the outside as a furnace bottom anti-aluminum corrosion casting layer, a furnace bottom anti-seepage layer casting layer and a furnace bottom lightweight insulation casting layer; the furnace top is arranged from the inside to the outside as a furnace top medium-quality casting material layer and a furnace top lightweight insulation casting material layer; The feeding mechanism comprises a bottom plate and a fixing frame arranged at the upper end of the bottom plate, a fixing plate is arranged in the center of the fixing frame, guide grooves are symmetrically arranged on both sides of the inner wall of the fixing frame, guide wheels are arranged on both sides of the fixing plate and are rollingly connected to the guide grooves, and a transmission assembly for driving the fixing plate to move up and down is arranged on the fixing frame; a material pouring device is arranged on one side of the fixing plate; The material pouring device includes a charging box and a cleaning plate arranged in the charging box, a baffle being provided on a side of the charging box away from the fixed plate, and the upper end of the baffle being rotatably connected to the charging box; slide grooves are symmetrically provided on the inner walls of both sides of the charging box, and matching blocks slidably connected to the slide grooves are provided on both sides of the cleaning plate, first grooves are symmetrically provided on the lower ends of both sides of the cleaning plate close to one side of the baffle, and connecting rods are rotatably connected in the first grooves, and second grooves corresponding to the two first grooves are provided on the lower end of the side of the baffle close to the cleaning plate, and one end of the connecting rod away from the first groove is rotatably connected in the second groove; a driving component for driving the matching block to slide in the slide groove is provided on the charging box.

2. A recycled aluminum processing and production system according to claim 1, characterized in that: It also includes a dust removal system, which includes a dust hood and a smoke exhaust pipe arranged on the first furnace body, the second furnace body and the third furnace body; the dust hood is arranged on the furnace door; and the smoke exhaust pipe is arranged on the furnace body.

3. A recycled aluminum processing and production system according to claim 2, characterized in that: The dust hood comprises a collection area, a circulation area, a smoke collection area and a main smoke duct; the collection area is connected to the circulation area above; the circulation area is connected to the smoke collection area above; the smoke collection area is connected to the main smoke duct above; a smoke exhaust fan is arranged in the main smoke duct.

4. A recycled aluminum processing and production system according to claim 1, characterized in that: It also includes a feeding mechanism for receiving, storing, preheating and transporting recycled aluminum raw materials, the feeding mechanism includes a feeding pipe; one end of the feeding pipe is connected to the loading mechanism, and the other end of the feeding pipe is provided with an inlet pipe; the inlet pipe is connected to the feeding port of the first furnace body; and a spiral blade is provided inside the feeding pipe.

5. The recycled aluminum processing and production system according to claim 1, characterized in that: The forming mechanism comprises a transport device, aluminum ingot molds uniformly arranged on the transport device, and a cooling device; the installation ground of the cooling device is lower than the installation ground of the third furnace body; a part of the transport device is located in the cooling device.

6. A method for processing and producing recycled aluminum according to any one of claims 1 to 5, characterized in that: The method comprises the following steps: Recycled aluminum raw material sorting process The recycled aluminum raw materials are first analyzed and tested when they enter the factory. Unqualified raw materials are directly returned to the supplier, and qualified raw materials are sorted and divided into cast aluminum raw materials and deformed aluminum raw materials according to their different components, and stored in different warehouses for use; Preheating process The recycled aluminum raw material is poured into the first furnace body through the feeding mechanism for preheating, surface paint removal, film removal, and melting to obtain an aluminum solution; Alternatively, the recycled aluminum raw material is poured into the feeding mechanism through the feeding mechanism, and is fed into the first furnace body through the feeding mechanism for preheating, surface paint removal, film removal, and melting to obtain an aluminum solution; In this step, the first furnace body adopts a double-chamber furnace, which includes a heating chamber and a charging chamber. The charging chamber is connected to the feeding structure, and the heating chamber is connected to the second furnace body. A flow channel is provided between the heating chamber and the charging chamber. An electromagnetic stirrer is provided at the bottom of the flow channel. The electromagnetic stirrer provides flow power for the aluminum solution, stirs the aluminum solution, and brings the high-temperature aluminum solution in the heating chamber into the charging chamber to flush the solid aluminum material, thereby realizing the preheating and melting process. Purification process The aluminum solution obtained after melting in the first furnace body enters the second furnace body, and the aluminum solution is kept still under heat preservation state to separate the iron impurities from the aluminum solution, and the unmelted iron impurities are filtered out to obtain an aluminum solution without iron elements; Conditioning and refining process The aluminum solution without iron enters the third furnace body, where it is refined and the alloy ratio is adjusted under the heat preservation state. After sampling and analysis, if the ratio is unqualified, the material is supplemented and fine-tuned to finally obtain the aluminum solution with qualified ratio. Molding process The aluminum solution from the third furnace body flows into the forming mold of the forming mechanism, is transported to the cooling device through the transport device, and is cooled and solidified to form an aluminum ingot; Finished product finishing process The aluminum ingots are stacked together by a stacker and packaged into finished products; Environmentally friendly processing process A dust hood is arranged at the furnace door of each furnace body, and a smoke exhaust pipe is arranged on each furnace body. The smoke in the dust hood and the smoke exhaust pipe is discharged into the dust removal system for environmental protection treatment.

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