Aluminum alloy continuous casting and rolling gas treatment collection device and gas treatment system comprising same

Abstract

The utility model discloses a kind of aluminium alloy continuous casting and rolling gas treatment collecting device and the gas treatment system comprising it, collecting device includes bottom plate, fixed shell, left baffle, right baffle, movable shell, track, gas outlet cover, first flue, first induced draft fan and second flue;Fixed shell includes back plate, top plate, left side plate and right side plate;Left baffle and right baffle are respectively spliced with left side plate and right side plate;Left baffle side wall is equipped with feed inlet, and right baffle side wall is equipped with discharge port;Track is installed between left baffle and right baffle, movable shell bottom is slidably fitted on track, top and the top plate edge of fixed shell on top are slidably fitted;Bottom plate, fixed shell, left baffle, right baffle and movable shell are spliced and form rolling room;Rolling mill body is located in rolling room;First flue passes through first induced draft fan and sucks the flue gas generated by casting machine body to rolling room;Second flue leads to gas treatment device.This application effectively improves the production environment of aluminium alloy continuous casting and rolling.

Description

Technical Field

[0001] This utility model relates to a gas treatment and collection device for continuous casting and rolling of aluminum alloys and a gas treatment system including the device, belonging to the field of continuous casting and rolling of aluminum alloys. Background Technology

[0002] Continuous casting and rolling of aluminum ingots to produce rods (such as aluminum rods) or wires is a short-process metal processing technology developed for conductive aluminum and aluminum alloy materials. The core technology involves remelting solid aluminum ingots and then directly producing aluminum rods or even finer wires with diameters of 6-15mm through an integrated process of "continuous casting (forming billets) + continuous rolling (rolling into shape)". These are mainly used in fields such as wire and cable conductors, busbars, and rivets. It boasts advantages such as a short process, energy saving, high yield, good uniformity, and high flexibility, and has become the mainstream production method for aluminum rods / wires.

[0003] During the continuous casting and rolling process of aluminum ingots to produce rods or wires, flue gas containing particulate matter and moisture is generated. However, on the production line, the continuous casting and rolling of aluminum ingots to produce rods or wires is mostly carried out in an open state. For example, patent application number 202221505131.1 discloses an aluminum alloy continuous rolling equipment, including a continuous rolling mill body. The inlet side of the continuous rolling mill body is equipped with a conveying structure for conveying aluminum blanks. The continuous rolling mill body is equipped with a roller mechanism for rolling aluminum blanks. A planer is also equipped on the inlet side of the continuous rolling mill body through a support frame. A pair of planer blades are equipped on the lower side of the planer. The aluminum blank is conveyed to the front of the continuous rolling mill body through the conveying structure, and the aluminum blank passes between the pair of planer blades on the lower side of the planer. This design allows the aluminum tire to have its burrs removed by a pair of planers on the underside of the planer before it is conveyed to the continuous rolling mill. This prevents the aluminum alloy wire or rod from peeling after entering the mill, thus improving the quality of the aluminum alloy wire or rod. However, this patent does not consider the impact of flue gas on operators and the environment. This application provides a gas treatment device for aluminum alloy continuous casting and rolling, which comprehensively collects and treats the flue gas generated during continuous casting and rolling, effectively reducing the impact of flue gas on operators and the environment, improving the production environment of aluminum alloy continuous casting and rolling, and enhancing environmental friendliness. Utility Model Content

[0004] This utility model provides a gas treatment and collection device for continuous casting and rolling of aluminum alloys and a gas treatment system including the device, which can effectively collect and treat the flue gas generated by continuous casting and rolling of aluminum alloys, effectively protecting the health of operators and the surrounding environment. It also has a simple structure and is easy to use.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0006] A gas treatment and collection device for continuous casting and rolling of aluminum alloy includes a base plate, a fixed shell, a left baffle, a right baffle, a movable shell, a track, an exhaust hood, a first flue, a first induced draft fan, and a second flue.

[0007] The fixed shell includes a rear side panel, a top panel, a left side panel, and a right side panel; the rear side panel, the left side panel, and the right side panel are all mounted on the bottom plate, the left side panel and the right side panel are located at the left and right ends of the rear side panel (on the same side), and the top panel is connected to the top of the rear side panel, the left side panel, and the right side panel to form a box structure with an open front side.

[0008] Both the left and right baffles are mounted on the bottom plate on the front side of the fixed housing, and the left and right baffles are connected to the left and right side plates along the height direction, respectively; the left baffle has a feed port (for aluminum ingots to enter) on its side wall, and the right baffle has a discharge port (for rods or wires to flow out) on its side wall.

[0009] The movable housing includes two or more movable housings arranged along its length. A track is installed on the base plate between the left and right baffles. The track has two or more parallel sliding grooves, the number of which is equal to the number of movable housings and corresponds one-to-one. The longitudinal section of the movable housing is shaped like the number 7. The bottom of the movable housing slides into the corresponding sliding groove, and the top of the movable housing slides into the edge of the top plate on the fixed housing. The base plate, fixed housing, left baffle, right baffle, and movable housing are spliced ​​together to form the rolling chamber. The length of each movable housing is less than the interval between the left and right baffles, and the sum of the lengths of all movable housings is not less than the interval between the left and right baffles. Thus, the rolling chamber can be opened by sliding any one of the movable housings.

[0010] The casting machine body and the rolling mill body are arranged sequentially from upstream to downstream, with the rolling mill body located inside the rolling chamber; the top plate of the fixed shell is provided with an exhaust port and an inlet port, and a collection hood is installed on the exhaust port; one end of the first flue draws the flue gas generated by the casting machine body through the first induced draft fan, and the other end is connected to the inlet port on the top plate; the second flue is connected to the collection hood.

[0011] The direction of this application from the front to the rear is also the direction from the movable shell to the rear panel. The length direction of the movable shell is parallel to the material flow direction during production (the material flow direction is from aluminum ingots to rods or wires, and also from the left baffle to the right baffle) and perpendicular to the direction from the front to the rear.

[0012] This application directly adopts existing online or commercially available equipment for the casting machine body and rolling mill body. The continuous casting ingot enters from the feed port, is rolled by the rolling mill body, and flows out from the discharge port as rod or wire (e.g., aluminum titanium boron wire).

[0013] Using the above-mentioned device, the smoke, dust, water vapor and other pollutants generated by continuous casting and rolling can be collected and treated in a comprehensive manner, reducing or avoiding the impact of flue gas on operators and the environment, and improving environmental protection.

[0014] Each of the aforementioned movable shells can move left and right to open the rolling chamber for easy inspection and maintenance. When no inspection or maintenance is required, each movable shell can be closed to form a essentially enclosed rolling chamber, thereby reducing the outflow of flue gas.

[0015] For ease of use, each movable shell has a grooved handle at both ends along its length on its outer side.

[0016] To improve the structural and operational stability of the mobile housing, rollers are provided at least at both ends of the bottom of the mobile housing, and slide rails matching the rollers are provided in the sliding grooves corresponding to the mobile housing.

[0017] To improve the sealing of the rolling mill, each sliding groove is equipped with a baffle plate arranged along its length, and each moving shell has a groove arranged along its length at its bottom. The groove at the bottom of the moving shell slides into the baffle plate in the corresponding sliding groove. In other words, the baffle plate does not affect the left and right movement of the moving shell. This effectively prevents flue gas from leaking from the bottom.

[0018] To further improve the structural and operational stability of the mobile housing, a pair of rollers are provided at each end of the bottom of the mobile housing. Each pair of rollers includes two rollers (the two rollers in the same pair) which are respectively located on both sides of the groove at the bottom of the mobile housing. Each sliding groove has two slide rails on both sides of the baffle plate that match the pair of rollers respectively. That is, there are two slide rails in each sliding groove, located on both sides of the baffle plate respectively.

[0019] In one preferred embodiment, the baffle plate in each sliding groove is positioned at the midpoint of its thickness direction; the groove at the bottom of each movable shell is positioned at the midpoint of its thickness direction. The thickness direction of the movable shell is also the thickness direction of the material used to prepare the movable shell. The thickness direction of the sliding groove is consistent with the thickness direction of the movable shell.

[0020] To further improve sealing, a first brush seal is provided on the edges of the left and right baffles that contact the movable shell (the first brush seal is provided on the left and right baffles); a second brush seal is provided on the edge of the top plate on the fixed shell that contacts the movable shell (the second brush seal is provided on the top plate). The setting of the second brush seal does not affect the sliding fit between the movable shell and the edge of the top plate. The second brush seal is located on the inner side of the sliding fit structure (an existing conventional structure can be used here).

[0021] To further improve the sealing performance, when both movable shells are in the closed state, a third brush seal is provided on the adjacent edge of two adjacent movable shells. The third brush seal is provided on the edge of at least one of the movable shells, or it can be provided on the edges of both adjacent movable shells.

[0022] As one specific implementation scheme, the movable housing includes three movable shells arranged along the length direction, namely the first movable shell, the second movable shell, and the third movable shell; when all the movable shells are in the closed state, the second movable shell is located between the first movable shell and the third movable shell, and the two ends of the second movable shell are located inside the edges of the first movable shell and the third movable shell, respectively; the third brush seal is provided on the edges of the first movable shell and the third movable shell, that is, the first movable shell and the edge of the third movable shell adjacent to the second movable shell are provided with the third brush seal.

[0023] The first, second, and third movable shells mentioned above can all move left and right.

[0024] A gas treatment system for continuous casting and rolling of aluminum alloy includes the aforementioned gas treatment and collection device, flue gas treatment device, and second induced draft fan.

[0025] One end of the second flue is connected to the collection hood, and the other end leads to the second induced draft fan. The gas treatment device is installed on the second flue.

[0026] During operation, the flue gas generated by the casting machine is drawn into the rolling chamber by the first induced draft fan. The flue gas generated by the rolling mill directly enters the rolling chamber, and then the second induced draft fan draws all the flue gas in the rolling chamber into the gas treatment device for treatment before it is discharged in compliance with standards.

[0027] As another implementation, an aluminum alloy continuous casting and rolling gas treatment system includes two or more of the above-mentioned aluminum alloy continuous casting and rolling gas treatment collection devices, mixing flues, flue gas treatment devices, and second induced draft fans.

[0028] Each aluminum alloy continuous casting and rolling gas treatment and collection device has a second flue connected at one end to the collection hood and at the other end to the mixing flue. The mixing flue leads to the second induced draft fan, and the gas treatment device is installed on the mixing flue.

[0029] In operation, the fumes generated by each casting machine are drawn into the corresponding rolling mill by the first induced draft fan. The fumes from the rolling mill directly enter the corresponding rolling mill, where a second induced draft fan draws all the fumes from each rolling mill to a gas treatment device for processing before being discharged in compliance with standards. This method allows for the simultaneous operation of two or more aluminum alloy continuous casting and rolling units, ensuring all generated fumes are drawn into a mixing flue and treated by the gas treatment device. This process is simple, convenient, and low-cost.

[0030] The aforementioned flue gas treatment device is a bag filter. If the gas treatment is insufficient, desulfurization devices, denitrification devices, adsorption devices, etc., can be connected in series.

[0031] Various pipe supports, equipment supports, instruments and other equipment can be installed at the installation site as needed.

[0032] Any technologies not mentioned in this utility model are based on existing technologies.

[0033] This utility model relates to a gas treatment and collection device for continuous casting and rolling of aluminum alloys, and a gas treatment system including the device. It can effectively collect and treat the flue gas generated during continuous casting and rolling of aluminum alloys, effectively protecting the health of operators and the surrounding environment. Multiple sets of aluminum alloy continuous casting and rolling equipment can share one gas treatment device. It has a simple structure, is easy to use, and is easy to modify. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the structure of the gas treatment and collection device for continuous casting and rolling of aluminum alloys according to this utility model;

[0035] Figure 2 This is a schematic diagram of the gas treatment system for continuous casting and rolling of aluminum alloys according to this utility model. Figure 1 ;

[0036] Figure 3 This is a schematic diagram of the gas treatment system for continuous casting and rolling of aluminum alloys according to this utility model. Figure 2 ;

[0037] Figure 4 A schematic diagram of the structure in which the bottom of the movable shell mates with the sliding groove;

[0038] In the diagram, 1 is the base plate, 2 is the fixed housing, 201 is the rear side plate, 202 is the top plate, 203 is the left side plate, 204 is the right side plate, 3 is the left baffle, 301 is the feed inlet, 4 is the right baffle, 5 is the movable housing, 501 is the moving housing, 502 is the grooved handle, 503 is the roller, 504 is the groove, 505 is the first moving housing, 506 is the second moving housing, 507 is the third moving housing, 6 is the track, 601 is the sliding groove, 602 is the slide rail, 603 is the baffle plate, 7 is the exhaust hood, 8 is the first flue, 9 is the first induced draft fan, 10 is the second flue, 11 is the flue gas treatment device, 12 is the second induced draft fan, and 13 is the mixing flue. Detailed Implementation

[0039] To better understand this utility model, the following embodiments further illustrate the content of this utility model, but the content of this utility model is not limited to the following embodiments.

[0040] The directional terms used in this application, such as “center,” “longitudinal,” “lateral,” “length,” “width,” “thickness,” “upper,” “lower,” “front,” “rear,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” and “outer,” are based on the orientation or positional relationship shown in the accompanying drawings or in the usage state, and are used only for the convenience of describing this application. They are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting this application.

[0041] Example 1

[0042] like Figure 1 As shown, a gas treatment and collection device for continuous casting and rolling of aluminum alloy includes a base plate, a fixed shell, a left baffle, a right baffle, a movable shell, a track, an exhaust hood, a first flue, a first induced draft fan, and a second flue.

[0043] The fixed shell includes a rear side panel, a top panel, a left side panel, and a right side panel; the rear side panel, the left side panel, and the right side panel are all mounted on the bottom plate, the left side panel and the right side panel are located at the left and right ends of the rear side panel (on the same side), and the top panel is connected to the top of the rear side panel, the left side panel, and the right side panel to form a box structure with an open front side.

[0044] Both the left and right baffles are mounted on the bottom plate on the front side of the fixed housing, and the left and right baffles are connected to the left and right side plates along the height direction, respectively; the left baffle has a feed port (for aluminum ingots to enter) on its side wall, and the right baffle has a discharge port (for rods or wires to flow out) on its side wall.

[0045] The movable housing includes two or more movable shells arranged along its length. A track is installed on the base plate between the front ends of the left and right baffles. The track has two or more parallel sliding grooves, the number of which is equal to the number of movable shells and corresponds one-to-one. The longitudinal section of the movable shell is shaped like the number 7. The bottom of the movable shell slides into the corresponding sliding groove, and the top of the movable shell slides into the edge of the top plate on the fixed housing. The base plate, fixed housing, left baffle, right baffle, and movable shell are spliced ​​together to form the rolling chamber. The length of each movable shell is less than the interval between the left and right baffles, and the sum of the lengths of all movable shells is not less than the interval between the left and right baffles. Thus, the rolling chamber can be opened by sliding (translating) any one of the movable shells.

[0046] The casting machine body and the rolling mill body are arranged sequentially from upstream to downstream. The casting machine body is located outside the rolling chamber, and the rolling mill body is located inside the rolling chamber. The top plate of the fixed shell is provided with an exhaust port and an inlet port, and a collection hood is installed on the exhaust port. One end of the first flue draws the flue gas generated by the casting machine body through the first induced draft fan (one end of the first flue is connected to the flue gas outlet of the casting machine body, and the first induced draft fan is located on the first flue), and the other end is connected to the inlet port on the top plate. The second flue is connected to the collection hood.

[0047] The aforementioned device allows for the comprehensive collection and treatment of fumes and water vapor generated during continuous casting and rolling, reducing or eliminating the impact of flue gas on operators and the environment, thus improving environmental friendliness. Each of the movable shells can move left and right, opening the rolling chamber for easy inspection and maintenance. When no inspection or maintenance is required, the movable shells can be closed, forming a essentially enclosed rolling chamber to minimize the outflow of flue gas.

[0048] Example 2

[0049] Based on Embodiment 1, the following improvements were made: For ease of use, grooved handles are provided at both ends of the outer side of each movable shell. To improve the structural and operational stability of the movable shell, rollers are provided at at least at both ends of the bottom of the movable shell, and slide rails matching the rollers are provided in the sliding grooves corresponding to the movable shell.

[0050] Example 3

[0051] Based on Example 2, the following improvements were made: Figure 4 As shown, to improve the sealing of the rolling mill, each sliding groove is equipped with a baffle plate arranged along its length, and each moving shell has a groove arranged along its length at its bottom. The groove at the bottom of the moving shell slides into the baffle plate in the corresponding sliding groove. That is, the baffle plate does not affect the left-right movement of the moving shell. To further improve the structural and operational stability of the moving shell, a pair of rollers are provided at each end of the bottom of the moving shell. Each pair of rollers consists of two wheels, respectively located on both sides of the groove at the bottom of the moving shell. Each sliding groove has two slide rails on both sides of the baffle plate, each matching one of the rollers. The baffle plate in each sliding groove is located at the midpoint of its thickness direction; the groove at the bottom of each moving shell is located at the midpoint of its thickness direction.

[0052] Example 4

[0053] Based on Embodiment 3, the following improvements were made: To further improve the sealing performance, a first brush seal is provided on the edges of the left and right baffles that contact the movable shell; a second brush seal is provided on the edge of the top plate on the fixed shell that contacts the movable shell. The second brush seal does not affect the sliding fit between the movable shell and the edge of the top plate, and the second brush seal is located inside the sliding fit structure (a conventional structure can be used here). To further improve the sealing performance, when both movable shells are in the closed state, a third brush seal is provided on the adjacent edge of two adjacent movable shells. The third brush seal is provided on at least one edge of the movable shell, or it can be provided on the edges of both adjacent movable shells.

[0054] Example 5

[0055] Based on Example 4, the following improvements were made: Figure 2 As shown, the movable housing includes three movable shells arranged along its length: a first movable shell, a second movable shell, and a third movable shell. When all movable shells are in the closed state, the second movable shell is located between the first and third movable shells, and the edges of the second movable shell are located inside the edges of the first and third movable shells, respectively. A third brush seal is provided on the edges of the first and third movable shells; that is, a third brush seal is provided on the edges of the first and third movable shells adjacent to the second movable shell. All three movable shells can move left and right.

[0056] Example 6

[0057] Based on Example 5, the following improvements were further made: Figure 2 As shown, an aluminum alloy continuous casting and rolling gas treatment system includes the aforementioned aluminum alloy continuous casting and rolling gas treatment and collection device, flue gas treatment device, and second induced draft fan.

[0058] One end of the second flue is connected to the collection hood, and the other end leads to the second induced draft fan. The gas treatment device is installed on the second flue.

[0059] During operation, the flue gas generated by the casting machine is drawn into the rolling chamber by the first induced draft fan. The flue gas generated by the rolling mill directly enters the rolling chamber, and then the second induced draft fan draws all the flue gas in the rolling chamber into the gas treatment device for treatment before it is discharged in compliance with standards.

[0060] Example 7

[0061] Based on Example 5, the following improvements were further made: Figure 3 As shown, an aluminum alloy continuous casting and rolling gas treatment system includes two aluminum alloy continuous casting and rolling gas treatment and collection devices, a mixing flue, a flue gas treatment device, and a second induced draft fan.

[0062] Each aluminum alloy continuous casting and rolling gas treatment and collection device has a second flue connected at one end to the collection hood and at the other end to the mixing flue. The mixing flue leads to the second induced draft fan, and the gas treatment device is installed on the mixing flue.

[0063] In operation, the flue gas generated by each casting machine is drawn into the corresponding rolling mill by the first induced draft fan. The flue gas generated by the rolling mill directly enters the corresponding rolling mill, where a second induced draft fan draws all the flue gas from each rolling mill to a gas treatment device for processing before being discharged in compliance with standards. This way, when two or more aluminum alloy continuous casting and rolling mills are running simultaneously, all the generated flue gas can be drawn into a mixing flue and treated by the gas treatment device. This method is simple, convenient, and low-cost. The aforementioned flue gas treatment device is a bag filter. If the gas treatment is insufficient, a desulfurization device, a denitrification device, and an adsorption device can be connected in series.

[0064] Experiments have shown that the gas treatment and collection devices for continuous casting and rolling of aluminum alloys described above, as well as the gas treatment systems containing them, can effectively collect and treat the flue gas generated during continuous casting and rolling of aluminum alloys, effectively protecting the health of operators and the surrounding environment; multiple sets of aluminum alloy continuous casting and rolling equipment can share one gas treatment device; the structure is simple, easy to use, and easy to modify.

Claims

1. A gas treatment and collection device for continuous casting and rolling of aluminum alloys, characterized in that: It includes a base plate, a fixed housing, a left baffle, a right baffle, a movable housing, a track, an exhaust hood, a first flue, a first induced draft fan, and a second flue; The fixed shell includes a rear side panel, a top panel, a left side panel, and a right side panel; the rear side panel, the left side panel, and the right side panel are all mounted on the bottom plate, the left side panel and the right side panel are located at the left and right ends of the rear side panel, and the top panel is connected to the top of the rear side panel, the left side panel, and the right side panel to form a box structure with an open front side. Both the left and right baffles are mounted on the bottom plate on the front side of the fixed housing, and the left and right baffles are connected to the left and right side plates along the height direction, respectively; the left baffle has a feed inlet on its side wall, and the right baffle has a discharge outlet on its side wall; The movable shell includes two or more movable shells arranged along its length. A track is installed on the base plate between the left and right baffles. The track has two or more parallel sliding grooves, the number of which is equal to the number of movable shells and corresponds one-to-one. The longitudinal section of the movable shell is shaped like a "7". The bottom of the movable shell slides into the corresponding sliding groove, and the top of the movable shell slides into the edge of the top plate on the fixed shell. The base plate, fixed shell, left baffle, right baffle, and movable shell are spliced ​​together to form a rolling chamber. The length of each movable shell is less than the interval between the left and right baffles, and the sum of the lengths of all movable shells is not less than the interval between the left and right baffles. The casting machine body and the rolling mill body are arranged sequentially from upstream to downstream, with the rolling mill body located inside the rolling chamber; the top plate of the fixed shell is provided with an exhaust port and an inlet port, and a collection hood is installed on the exhaust port; one end of the first flue draws the flue gas generated by the casting machine body through the first induced draft fan, and the other end is connected to the inlet port on the top plate; the second flue is connected to the collection hood.

2. The gas treatment and collection device for continuous casting and rolling of aluminum alloys according to claim 1, characterized in that: Each movable housing has a grooved handle at both ends of its outer side.

3. The gas treatment and collection device for aluminum alloy continuous casting and rolling according to claim 1 or 2, characterized in that: The bottom of the movable housing is provided with rollers at at least at both ends, and a sliding rail matching the rollers is provided in the sliding groove corresponding to the movable housing.

4. The gas treatment and collection device for continuous casting and rolling of aluminum alloys according to claim 3, characterized in that: Each sliding groove is provided with a baffle plate arranged along the length direction, and the bottom of each movable shell is provided with a groove arranged along the length direction. The groove at the bottom of the movable shell slides and fits onto the baffle plate in the corresponding sliding groove.

5. The gas treatment and collection device for continuous casting and rolling of aluminum alloys according to claim 4, characterized in that: The bottom of the movable housing is provided with a pair of rollers at each end. Each pair of rollers includes two rollers, which are respectively located on both sides of the groove at the bottom of the movable housing. The two sides of the baffle in each sliding groove are provided with slide rails that match the pair of rollers respectively.

6. The gas treatment and collection device for continuous casting and rolling of aluminum alloys according to claim 5, characterized in that: The baffle plate in each sliding groove is located at the middle position in its thickness direction; the groove at the bottom of each movable shell is located at the middle position in its thickness direction.

7. The gas treatment and collection device for continuous casting and rolling of aluminum alloys according to claim 1 or 2, characterized in that: The edges of the left and right baffles that contact the movable shell are provided with a first brush seal; the top plate on the fixed shell that contacts the movable shell is provided with a second brush seal; when both movable shells are in the closed state, the adjacent edges of two adjacent movable shells are provided with a third brush seal.

8. The gas treatment and collection device for continuous casting and rolling of aluminum alloys according to claim 7, characterized in that: The movable housing includes three movable shells arranged along the length direction, namely the first movable shell, the second movable shell, and the third movable shell; when all the movable shells are in the closed state, the second movable shell is located between the first movable shell and the third movable shell, and the two ends of the second movable shell are located inside the edges of the first movable shell and the third movable shell, respectively; the third brush seal is provided at the edges of the first movable shell and the third movable shell.

9. A gas treatment system for continuous casting and rolling of aluminum alloys, characterized in that: Includes the gas treatment and collection device, flue gas treatment device and second induced draft fan for aluminum alloy continuous casting and rolling as described in any one of claims 1-8. One end of the second flue is connected to the collection hood, and the other end leads to the second induced draft fan. The gas treatment device is installed on the second flue.

10. A gas treatment system for continuous casting and rolling of aluminum alloys, characterized in that: Includes two or more of the aluminum alloy continuous casting and rolling gas treatment and collection device, mixing flue, flue gas treatment device and second induced draft fan as described in any one of requirements 1-8; Each aluminum alloy continuous casting and rolling gas treatment and collection device has a second flue connected at one end to the collection hood and at the other end to the mixing flue. The mixing flue leads to the second induced draft fan, and the gas treatment device is installed on the mixing flue.

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